:root {
      --primary: #1a2bc3;
      --secondary: #f6f9ff;
      --text: #3a3a3a;
      --orange: #fe770e;
      --yellow: #ebbb01;
      --light-grey: #f0f3f7;
      --dark-blue: #020042;
      --gradient-primary: linear-gradient(135deg, #1a2bc3 0%, #020042 100%);
      --gradient-accent: linear-gradient(135deg, #fe770e 0%, #ebbb01 100%);
      --shadow: 0 4px 20px rgba(2,0,66,0.08);
      --shadow-lg: 0 10px 40px rgba(2,0,66,0.14);
    }

    *, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
    html { scroll-behavior: smooth; }

    body {
      font-family: "Roboto", sans-serif;
      background: var(--secondary);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    header {
      height: 80px;
      padding: 0 44px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      position: fixed;
      top: 0; left: 0; right: 0;
      background: rgba(246,249,255,0.92);
      backdrop-filter: blur(16px);
      z-index: 1000;
      border-bottom: 1px solid rgba(26,43,195,0.1);
      box-shadow: 0 2px 20px rgba(2,0,66,0.06);
    }

    .nav-logo { display: flex; align-items: center; gap: 12px; }

    .nav-logo-mark {
      width: 40px; height: 40px;
      background: var(--gradient-primary);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      font-family: "Montserrat", sans-serif;
      font-weight: 800; font-size: 13px; color: white;
    }

    .nav-brand { display: flex; flex-direction: column; line-height: 1.2; }
    .nav-brand span:first-child { font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 15px; color: var(--dark-blue); }
    .nav-brand span:last-child { font-size: 10px; color: var(--orange); letter-spacing: 2px; text-transform: uppercase; font-weight: 500; }

    .nav-links { display: flex; gap: 24px; align-items: center; }
    .nav-links a { font-size: 15px; font-weight: 500; color: #4c4c4c; transition: color 0.2s; }
    .nav-links a:hover { color: var(--primary); }

    .nav-cta {
      background: var(--gradient-primary);
      color: white !important;
      padding: 11px 24px;
      border-radius: 12px;
      font-weight: 600 !important;
      font-size: 14px !important;
      box-shadow: 0 4px 15px rgba(26,43,195,0.3);
      transition: transform 0.2s, box-shadow 0.2s !important;
    }
    .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(26,43,195,0.4) !important; }

    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1002; }
    .hamburger span { display: block; height: 3px; border-radius: 2px; background: var(--text); transition: all 0.3s; }
    .hamburger span:nth-child(1) { width: 28px; }
    .hamburger span:nth-child(2) { width: 18px; }
    .hamburger span:nth-child(3) { width: 24px; }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(246,249,255,0.97);
      backdrop-filter: blur(20px);
      z-index: 999;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 20px;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a { font-family: "Montserrat", sans-serif; font-size: 1.4rem; font-weight: 700; color: var(--dark-blue); padding: 10px 0; transition: color 0.2s; }
    .mobile-menu a:hover { color: var(--orange); }

    .hero {
      padding: 140px 40px 80px;
      background: var(--secondary);
      position: relative;
      overflow: hidden;
      text-align: center;
    }

    .hero::before {
      content: '';
      position: absolute; top: 0; left: 0; right: 0; bottom: 0;
      background: radial-gradient(circle at 15% 50%, rgba(26,43,195,0.06) 0%, transparent 50%),
                  radial-gradient(circle at 85% 30%, rgba(254,119,14,0.05) 0%, transparent 50%);
      pointer-events: none;
    }

    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(254,119,14,0.1);
      border: 1px solid rgba(254,119,14,0.3);
      color: var(--orange);
      padding: 8px 18px; border-radius: 100px;
      font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
      margin-bottom: 24px;
      animation: fadeInDown 0.8s ease forwards;
    }

    .hero-badge-dot { width: 7px; height: 7px; background: var(--orange); border-radius: 50%; animation: pulseDot 1.5s ease-in-out infinite; flex-shrink: 0; }

    @keyframes pulseDot { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.6); opacity: 0.5; } }

    .hero-pretitle {
      font-size: 13px; color: #707070; letter-spacing: 3px; text-transform: uppercase; font-weight: 500; margin-bottom: 18px;
      opacity: 0; animation: fadeInDown 0.9s ease 0.1s forwards;
    }

    .hero-title {
      font-family: "Montserrat", sans-serif; font-weight: 800;
      font-size: clamp(2.5rem, 6vw, 4.5rem);
      line-height: 1.1; color: var(--dark-blue); margin-bottom: 12px;
      opacity: 0; animation: fadeInUp 1s ease 0.2s forwards;
    }

    .hero-title .accent { background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero-title .blue { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

    .hero-subtitle {
      font-size: 1.1rem; color: #707070; max-width: 620px; margin: 20px auto 36px; line-height: 1.75;
      opacity: 0; animation: fadeInUp 1s ease 0.35s forwards;
    }

    .hero-meta {
      display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 40px;
      opacity: 0; animation: fadeInUp 1s ease 0.45s forwards;
    }

    .hero-meta-chip {
      display: flex; align-items: center; gap: 8px;
      background: white; border: 1px solid rgba(26,43,195,0.15); border-radius: 100px;
      padding: 10px 20px; font-size: 14px; font-weight: 500; color: var(--text);
      box-shadow: var(--shadow);
    }
    .hero-meta-chip i { color: var(--primary); font-size: 16px; }

    .hero-ctas {
      display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px;
      opacity: 0; animation: fadeInUp 1s ease 0.55s forwards;
    }

    .btn-primary {
      background: var(--gradient-primary); color: white;
      padding: 15px 32px; border-radius: 14px;
      font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 15px;
      border: none; cursor: pointer;
      box-shadow: 0 6px 20px rgba(26,43,195,0.35);
      transition: transform 0.2s, box-shadow 0.2s;
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(26,43,195,0.45); }

    .btn-accent {
      background: var(--gradient-accent); color: white;
      padding: 15px 32px; border-radius: 14px;
      font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 15px;
      border: none; cursor: pointer;
      box-shadow: 0 6px 20px rgba(254,119,14,0.3);
      transition: transform 0.2s, box-shadow 0.2s;
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-accent:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(254,119,14,0.45); }

    .btn-outline {
      background: transparent; color: var(--primary);
      padding: 14px 30px; border-radius: 14px;
      font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 15px;
      border: 2px solid var(--primary); cursor: pointer; transition: all 0.2s;
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-outline:hover { background: var(--primary); color: white; }

    .hero-stats-strip {
      display: grid; grid-template-columns: repeat(4, 1fr);
      background: white; border-radius: 20px;
      box-shadow: var(--shadow-lg); border: 1px solid rgba(26,43,195,0.08);
      overflow: hidden; max-width: 900px; margin: 0 auto;
      opacity: 0; animation: fadeInUp 1s ease 0.65s forwards;
    }

    .hero-stat-item {
      padding: 28px 20px; text-align: center;
      border-right: 1px solid #eef0f7; transition: background 0.3s;
    }
    .hero-stat-item:last-child { border-right: none; }
    .hero-stat-item:hover { background: var(--secondary); }

    .hero-stat-number {
      font-family: "Montserrat", sans-serif; font-size: 2rem; font-weight: 800;
      background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
      display: block;
    }
    .hero-stat-label { font-size: 13px; color: #707070; margin-top: 6px; font-weight: 500; }

    .countdown-section {
      padding: 48px 40px;
      background: var(--gradient-primary);
      position: relative; overflow: hidden;
    }
    .countdown-section::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="10" cy="20" r="1" fill="rgba(255,255,255,0.08)"/><circle cx="90" cy="40" r="1.5" fill="rgba(255,255,255,0.08)"/><circle cx="50" cy="10" r="1.2" fill="rgba(255,255,255,0.08)"/><circle cx="80" cy="70" r="2" fill="rgba(255,255,255,0.08)"/></svg>');
    }
    .countdown-inner { max-width: 900px; margin: 0 auto; position: relative; z-index: 1; text-align: center; }
    .countdown-label {
      font-family: "Montserrat", sans-serif; font-size: 13px; letter-spacing: 3px;
      text-transform: uppercase; color: rgba(255,255,255,0.7); margin-bottom: 28px; font-weight: 600;
      display: flex; align-items: center; justify-content: center; gap: 10px;
    }
    .countdown-label i { font-size: 16px; }
    .countdown-grid { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
    .countdown-item {
      background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2);
      backdrop-filter: blur(10px); border-radius: 18px; padding: 24px 32px; min-width: 110px; text-align: center;
    }
    .countdown-number { font-family: "Montserrat", sans-serif; font-size: 3rem; font-weight: 800; color: white; display: block; line-height: 1; }
    .countdown-unit { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: rgba(255,255,255,0.65); margin-top: 8px; display: block; font-weight: 500; }

    .section-pad { padding: 90px 40px; }
    .container { max-width: 1200px; margin: 0 auto; }
    .section-eyebrow { font-family: "Montserrat", sans-serif; font-size: 11px; letter-spacing: 4px; text-transform: uppercase; color: var(--orange); margin-bottom: 12px; font-weight: 600; }
    .section-title { font-family: "Montserrat", sans-serif; font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; color: var(--dark-blue); line-height: 1.2; margin-bottom: 16px; }
    .section-title .accent { background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .section-title .blue { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .section-desc { color: #707070; font-size: 1rem; line-height: 1.75; max-width: 580px; }
    .section-center { text-align: center; }
    .section-center .section-desc { margin: 0 auto; }

    #about { background: var(--light-grey); position: relative; overflow: hidden; }
    #about::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at 20% 80%, rgba(26,43,195,0.04) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(254,119,14,0.04) 0%, transparent 50%); }
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; position: relative; z-index: 1; }
    .about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 36px; }

    .about-stat {
      background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 0 0 16px 16px; padding: 24px;
      position: relative; overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s, box-shadow 0.3s;
    }
    .about-stat:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .about-stat::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-accent); }
    .about-stat-num { font-family: "Montserrat", sans-serif; font-size: 2rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .about-stat-label { font-size: 13px; color: #707070; margin-top: 4px; font-weight: 500; }

    .eth-visual-wrap { display: flex; align-items: center; justify-content: center; }
    .eth-visual { width: 360px; height: 360px; position: relative; display: flex; align-items: center; justify-content: center; }
    .eth-ring { position: absolute; border-radius: 50%; border: 1.5px solid rgba(26,43,195,0.2); animation: spinRing linear infinite; }
    .eth-ring-1 { width: 85%; height: 85%; animation-duration: 25s; }
    .eth-ring-2 { width: 100%; height: 100%; animation-duration: 40s; animation-direction: reverse; border-style: dashed; border-color: rgba(254,119,14,0.25); }
    .eth-ring-dot { position: absolute; width: 10px; height: 10px; background: var(--orange); border-radius: 50%; top: -5px; left: 50%; transform: translateX(-50%); box-shadow: 0 0 15px rgba(254,119,14,0.5); }
    @keyframes spinRing { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
    .eth-core {
      width: 180px; height: 180px;
      background: linear-gradient(135deg, rgba(26,43,195,0.08), rgba(2,0,66,0.05));
      border: 2px solid rgba(26,43,195,0.15); border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      position: relative; z-index: 2;
      box-shadow: 0 0 60px rgba(26,43,195,0.1), var(--shadow-lg);
      animation: ethPulse 3s ease-in-out infinite;
    }
    @keyframes ethPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.04); } }
    .eth-symbol { font-family: "Montserrat", sans-serif; font-size: 5rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

    #goals { background: var(--secondary); }
    .goals-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 50px; }
    .goal-card {
      background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 20px; padding: 36px 28px;
      box-shadow: var(--shadow); transition: all 0.3s; position: relative; overflow: hidden;
    }
    .goal-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
    .goal-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(26,43,195,0.2); }
    .goal-card:hover::after { transform: scaleX(1); }
    .goal-icon {
      width: 56px; height: 56px; background: var(--gradient-primary); border-radius: 14px;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 20px; box-shadow: 0 6px 20px rgba(26,43,195,0.25); transition: transform 0.3s;
    }
    .goal-icon i { color: white; font-size: 24px; }
    .goal-card:hover .goal-icon { transform: scale(1.1) rotate(5deg); }
    .goal-title { font-family: "Montserrat", sans-serif; font-size: 1.1rem; font-weight: 700; color: var(--dark-blue); margin-bottom: 12px; }
    .goal-desc { font-size: 14px; color: #707070; line-height: 1.75; }

    #tracks { background: var(--light-grey); }
    .tracks-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 50px; }
    .track-card {
      background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 20px; padding: 36px;
      box-shadow: var(--shadow); display: flex; gap: 24px; align-items: flex-start;
      transition: all 0.8s; 
    }
    .track-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
    .track-num { font-family: "Montserrat", sans-serif; font-size: 3.5rem; font-weight: 800; background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; opacity: 0.4; line-height: 1; flex-shrink: 0; }
    .track-title { font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--primary); margin-bottom: 10px; }
    .track-desc { font-size: 14px; color: #707070; line-height: 1.7; margin-bottom: 16px; }
    .track-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .track-tag { font-size: 12px; font-weight: 600; color: var(--primary); background: rgba(26,43,195,0.07); border: 1px solid rgba(26,43,195,0.15); padding: 4px 12px; border-radius: 100px; }

    #agenda { background: var(--light-grey); }
    .agenda-timeline { margin-top: 50px; max-width: 820px; margin-left: auto; margin-right: auto; position: relative; }
    .agenda-timeline::before { content: ''; position: absolute; left: 100px; top: 0; bottom: 0; width: 2px; background: var(--gradient-primary); }
    .agenda-item { display: flex; gap: 36px; align-items: flex-start; margin-bottom: 24px; }
    .agenda-time { width: 100px; flex-shrink: 0; text-align: right; font-family: "Montserrat", sans-serif; font-size: 13px; font-weight: 700; color: var(--primary); padding-top: 16px; }
    .agenda-dot { width: 14px; height: 14px; border-radius: 50%; background: var(--gradient-primary); border: 3px solid white; flex-shrink: 0; position: relative; z-index: 1; margin-top: 16px; box-shadow: 0 0 0 3px rgba(26,43,195,0.2); }
    .agenda-content { background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 14px; padding: 18px 24px; flex: 1; box-shadow: var(--shadow); transition: all 0.3s; }
    .agenda-content:hover { transform: translateX(4px); border-color: rgba(26,43,195,0.2); box-shadow: var(--shadow-lg); }
    .agenda-break { background: rgba(254,119,14,0.04); border-color: rgba(254,119,14,0.2); }
    .agenda-track-tag { font-size: 10px; font-family: "Montserrat", sans-serif; font-weight: 700; color: var(--orange); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 5px; }
    .agenda-title { font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 15px; color: var(--dark-blue); margin-bottom: 3px; }
    .agenda-speaker { font-size: 13px; color: #707070; }

    #about-flowdiary { background: var(--secondary); }
    .fd-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 80px; align-items: center; }
    .fd-achievements { display: flex; flex-direction: column; gap: 14px; margin-top: 32px; }
    .fd-achievement { display: flex; align-items: flex-start; gap: 16px; background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 14px; padding: 16px 20px; box-shadow: var(--shadow); transition: all 0.3s; }
    .fd-achievement:hover { border-color: rgba(254,119,14,0.3); transform: translateX(5px); }
    .fd-ach-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; display: flex; align-items: center; }
    .fd-ach-icon i { font-size: 22px; color: var(--orange); }
    .fd-ach-text { font-size: 14px; color: #555; line-height: 1.55; }
    .fd-ach-text strong { color: var(--dark-blue); font-weight: 600; }
    .fd-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .fd-stat-card { background: white; border: 1px solid rgba(26,43,195,0.08); border-radius: 16px; padding: 24px 20px; text-align: center; box-shadow: var(--shadow); transition: all 0.3s; position: relative; overflow: hidden; }
    .fd-stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-accent); }
    .fd-stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .fd-stat-num { font-family: "Montserrat", sans-serif; font-size: 1.8rem; font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: flex; align-items: center; justify-content: center; gap: 8px; }
    .fd-stat-num i { font-size: 1.6rem; }
    .fd-stat-label { font-size: 12px; color: #707070; margin-top: 6px; font-weight: 500; }

    #venue { background: var(--light-grey); }
    .venue-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-top: 50px; }
    .venue-name { font-family: "Montserrat", sans-serif; font-size: 1.8rem; font-weight: 800; color: var(--dark-blue); margin-bottom: 8px; }
    .venue-address { color: #707070; font-size: 15px; margin-bottom: 28px; line-height: 1.65; }
    .venue-details { display: flex; flex-direction: column; gap: 14px; }
    .venue-detail-item { display: flex; align-items: center; gap: 14px; font-size: 15px; color: var(--text); }
    .venue-detail-icon { width: 42px; height: 42px; background: var(--gradient-primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; box-shadow: 0 4px 12px rgba(26,43,195,0.25); }
    .venue-detail-icon i { color: white; font-size: 19px; }
    .venue-map { background: white; border: 1px solid rgba(26,43,195,0.1); border-radius: 20px; overflow: hidden; height: 380px; box-shadow: var(--shadow-lg); }
    .venue-map iframe { width: 100%; height: 100%; border: none; }

    #sponsors { background: var(--secondary); }
    .sponsor-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 50px; }
    .sponsor-tier { background: white; border-radius: 20px; padding: 36px 28px; text-align: center; box-shadow: var(--shadow); border: 1px solid rgba(26,43,195,0.08); position: relative; overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; }
    .sponsor-tier:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .tier-platinum { border-color: rgba(26,43,195,0.25); background: linear-gradient(180deg, rgba(26,43,195,0.03), white 30%); }
    .tier-gold { border-color: rgba(235,187,1,0.35); background: linear-gradient(180deg, rgba(235,187,1,0.04), white 30%); }
    .tier-top-bar { position: absolute; top: 0; left: 0; right: 0; height: 4px; }
    .tier-platinum .tier-top-bar { background: var(--gradient-primary); }
    .tier-gold .tier-top-bar { background: var(--gradient-accent); }
    .tier-silver .tier-top-bar { background: linear-gradient(90deg, #9ca3af, #d1d5db); }
    .tier-badge { font-family: "Montserrat", sans-serif; font-size: 1.3rem; font-weight: 800; margin-bottom: 8px; display: flex; align-items: center; justify-content: center; gap: 8px; }
    .tier-platinum .tier-badge { color: var(--primary); }
    .tier-gold .tier-badge { color: #b45309; }
    .tier-silver .tier-badge { color: #6b7280; }
    .tier-price { font-family: "Montserrat", sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--dark-blue); margin-bottom: 4px; }
    .tier-currency { font-size: 13px; color: #707070; margin-bottom: 24px; }
    .tier-features { list-style: none; text-align: left; margin-bottom: 28px; }
    .tier-features li { font-size: 14px; color: var(--text); padding: 7px 0; border-bottom: 1px solid #f0f3f7; display: flex; align-items: flex-start; gap: 10px; }
    .tier-features li i { color: var(--orange); font-size: 14px; margin-top: 2px; flex-shrink: 0; }
    .tier-btn { width: 100%; padding: 14px; border-radius: 12px; font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 14px; cursor: pointer; border: none; transition: all 0.2s; }
    .tier-platinum .tier-btn { background: var(--gradient-primary); color: white; box-shadow: 0 4px 15px rgba(26,43,195,0.3); }
    .tier-gold .tier-btn { background: var(--gradient-accent); color: white; box-shadow: 0 4px 15px rgba(254,119,14,0.3); }
    .tier-silver .tier-btn { background: var(--light-grey); color: var(--text); border: 1px solid rgba(26,43,195,0.15); }
    .tier-btn:hover { transform: translateY(-2px); }

    #get-involved { background: var(--light-grey); }
    .tab-buttons { display: flex; background: white; border: 1px solid rgba(26,43,195,0.12); border-radius: 14px; padding: 6px; gap: 4px; max-width: 560px; margin: 40px auto; box-shadow: var(--shadow); }
    .tab-btn { flex: 1; background: transparent; border: none; color: #707070; font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 13px; padding: 12px 8px; border-radius: 10px; cursor: pointer; transition: all 0.3s; display: flex; align-items: center; justify-content: center; gap: 6px; }
    .tab-btn i { font-size: 15px; }
    .tab-btn.active { background: var(--gradient-primary); color: white; box-shadow: 0 4px 12px rgba(26,43,195,0.3); }
    .tab-content { display: none; max-width: 680px; margin: 0 auto; }
    .tab-content.active { display: block; }
    .form-card { background: white; border: 1px solid rgba(26,43,195,0.1); border-radius: 24px; padding: 48px; box-shadow: var(--shadow-lg); }
    .form-title { font-family: "Montserrat", sans-serif; font-size: 1.6rem; font-weight: 800; color: var(--dark-blue); margin-bottom: 8px; }
    .form-subtitle { color: #707070; font-size: 14px; margin-bottom: 32px; line-height: 1.7; }
    .form-group { margin-bottom: 20px; }
    .form-label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 8px; font-family: "Montserrat", sans-serif; }
    .form-input, .form-select, .form-textarea { width: 100%; background: var(--secondary); border: 1.5px solid rgba(26,43,195,0.12); border-radius: 10px; padding: 13px 16px; color: var(--text); font-family: "Roboto", sans-serif; font-size: 15px; transition: border-color 0.2s, box-shadow 0.2s; outline: none; }
    .form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,43,195,0.1); }
    .form-textarea { resize: vertical; min-height: 120px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .form-submit { width: 100%; padding: 16px; background: var(--gradient-primary); color: white; border: none; border-radius: 12px; font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 16px; cursor: pointer; transition: all 0.3s; margin-top: 8px; box-shadow: 0 6px 20px rgba(26,43,195,0.3); }
    .form-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(26,43,195,0.4); }
    .form-submit:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }

    #faq { background: var(--secondary); }
    .faq-list { max-width: 760px; margin: 50px auto 0; }
    .faq-item { border: 1px solid rgba(26,43,195,0.1); border-radius: 14px; margin-bottom: 12px; overflow: hidden; background: white; box-shadow: var(--shadow); transition: border-color 0.3s; }
    .faq-item.open { border-color: rgba(26,43,195,0.3); }
    .faq-question { padding: 20px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 15px; color: var(--dark-blue); background: white; user-select: none; transition: background 0.2s; }
    .faq-item.open .faq-question { background: rgba(26,43,195,0.03); }
    .faq-chevron { font-size: 18px; color: var(--primary); transition: transform 0.3s; flex-shrink: 0; }
    .faq-item.open .faq-chevron { transform: rotate(180deg); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; font-size: 14px; color: #707070; line-height: 1.75; padding: 0 24px; background: white; }
    .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 22px; }

    footer { background: var(--dark-blue); padding: 64px 44px 24px; }
    .footer-inner { max-width: 1200px; margin: 0 auto; }
    .footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; margin-bottom: 50px; }
    .footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
    .footer-logo-mark { width: 38px; height: 38px; background: var(--gradient-accent); border-radius: 9px; display: flex; align-items: center; justify-content: center; font-family: "Montserrat", sans-serif; font-weight: 800; font-size: 13px; color: white; }
    .footer-logo-text { font-family: "Montserrat", sans-serif; font-weight: 800; font-size: 15px; color: var(--secondary); }
    .footer-tagline { font-size: 14px; color: #bbbcbe; line-height: 1.65; max-width: 260px; margin-bottom: 24px; }
    .footer-social { display: flex; gap: 10px; }
    .social-link { width: 36px; height: 36px; background: rgba(246,249,255,0.08); border: 1px solid rgba(246,249,255,0.12); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #bbbcbe; transition: all 0.2s; }
    .social-link i { font-size: 16px; }
    .social-link:hover { background: var(--primary); border-color: var(--primary); color: white; }
    .footer-col h4 { font-family: "Montserrat", sans-serif; font-weight: 600; font-size: 15px; margin-bottom: 18px; color: var(--secondary); }
    .footer-col a { display: block; font-size: 14px; color: #bbbcbe; margin-bottom: 10px; transition: color 0.2s; }
    .footer-col a:hover { color: white; }
    .footer-bottom { border-top: 1px solid rgba(246,249,255,0.1); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
    .footer-copy { font-size: 13px; color: #95969a; }
    .footer-copy span { color: var(--orange); }

    @keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
    @keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
    .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    @media (max-width: 1024px) {
      .footer-top { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      header { padding: 0 20px; height: 70px; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero { padding: 110px 20px 60px; }
      .hero-stats-strip { grid-template-columns: repeat(2, 1fr); }
      .section-pad { padding: 60px 20px; }
      .about-grid { grid-template-columns: 1fr; gap: 40px; }
      .eth-visual-wrap { order: -1; }
      .eth-visual { width: 260px; height: 260px; }
      .goals-grid { grid-template-columns: 1fr; }
      .tracks-grid { grid-template-columns: 1fr; }
      .agenda-timeline::before { display: none; }
      .agenda-item { flex-direction: column; gap: 6px; }
      .agenda-time { width: auto; text-align: left; padding-top: 0; }
      .agenda-dot { display: none; }
      .venue-grid { grid-template-columns: 1fr; }
      .sponsor-tiers { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
      .fd-grid { grid-template-columns: 1fr; gap: 40px; }
      .form-card { padding: 28px 20px; }
      .form-row { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .countdown-item { min-width: 80px; padding: 18px 16px; }
      .countdown-number { font-size: 2.2rem; }
      .tab-btn { font-size: 11px; gap: 4px; }
    }

    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--secondary); }
    ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }
#contact { background: var(--secondary); }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}
.contact-card {
  background: white;
  border: 1px solid rgba(26,43,195,0.08);
  border-radius: 20px;
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(26,43,195,0.2); }
.contact-card:hover::before { transform: scaleX(1); }
.contact-icon {
  width: 60px; height: 60px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 6px 20px rgba(26,43,195,0.25);
  transition: transform 0.3s;
}
.contact-card:hover .contact-icon { transform: scale(1.1) rotate(5deg); }
.contact-icon i { color: white; font-size: 26px; }
.contact-type {
  font-family: "Montserrat", sans-serif;
  font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--orange); margin-bottom: 10px;
}
.contact-value {
  font-family: "Montserrat", sans-serif;
  font-size: 1.05rem; font-weight: 700;
  color: var(--dark-blue); margin-bottom: 6px;
  word-break: break-word;
}
.contact-note { font-size: 13px; color: #707070; line-height: 1.6; }
.contact-link {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 18px;
  background: var(--gradient-primary);
  color: white;
  padding: 10px 22px;
  border-radius: 10px;
  font-family: "Montserrat", sans-serif;
  font-weight: 600; font-size: 13px;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(26,43,195,0.25);
}
.contact-link:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,43,195,0.35); color: white; }

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
}