*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  :root {
    --white: #ffffff;
    --black: #0a0a0a;
    --grey-100: #f5f5f5;
    --grey-200: #e8e8e8;
    --grey-400: #999999;
    --grey-600: #555555;
    --blue: #2563EB;
    --blue-dark: #1D4ED8;
    --blue-light: #EFF6FF;
    --gold: #D4A843;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'DM Sans', sans-serif;
    background: var(--white);
    color: var(--black);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

/* NAV */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 24px 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--grey-200);
  }
  
  .nav-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 22px;
    color: var(--black);
    letter-spacing: -0.5px;
  }
  
  .nav-logo span {
    color: var(--blue);
  }
  
  .nav-cta {
    background: var(--black);
    color: var(--white);
    border: none;
    padding: 10px 22px;
    border-radius: 100px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.1s;
  }
  
  .nav-cta:hover {
    background: var(--blue);
    transform: translateY(-1px);
  }


/* HERO */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
  }
  
  .hero::before {
    content: '';
    position: absolute;
    top: -200px; left: 50%;
    transform: translateX(-50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
    pointer-events: none;
  }
  
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--blue-light);
    color: var(--blue);
    border: 1px solid rgba(37,99,235,0.15);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 32px;
    animation: fadeUp 0.8s ease forwards 0.2s;
    opacity: 0;
  }
  
  .hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--blue);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
  }
  
  .hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(48px, 8vw, 96px);
    line-height: 1.0;
    letter-spacing: -2px;
    color: var(--black);
    max-width: 900px;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.4s;
  }
  
  .hero-title em {
    font-style: italic;
    color: var(--blue);
  }
  
  .hero-sub {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--grey-600);
    max-width: 520px;
    line-height: 1.6;
    font-weight: 300;
    margin-bottom: 48px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.6s;
  }
  
  .waitlist-form {
    display: flex;
    max-width: 420px;
    width: 100%;
    border-radius: 100px;
    border: 1.5px solid var(--grey-200);
    overflow: hidden;
    background: var(--white);
    box-shadow: 0 4px 32px rgba(0,0,0,0.06);
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.8s;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  
  .waitlist-form:focus-within {
    border-color: var(--blue);
    box-shadow: 0 4px 32px rgba(37,99,235,0.12);
  }
  
  .waitlist-form input {
    flex: 1;
    border: none;
    outline: none;
    padding: 16px 24px;
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    color: var(--black);
    background: transparent;
  }
  
  .waitlist-form input::placeholder {
    color: var(--grey-400);
  }
  
  .waitlist-form button {
    background: var(--blue);
    color: var(--white);
    border: none;
    padding: 14px 24px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
    border-radius: 100px;
    margin: 4px;
  }
  
  .waitlist-form button:hover {
    background: var(--blue-dark);
  }
  
  .success-msg {
    display: none;
    align-items: center;
    gap: 10px;
    background: #F0FDF4;
    color: #166534;
    border: 1px solid #BBF7D0;
    padding: 14px 24px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
  }
  
  .hero-note {
    margin-top: 16px;
    font-size: 13px;
    color: var(--grey-400);
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 1s;
  }
  
  /* ANIMATIONS */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
  }


/* FEATURES */
.features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 100px 48px;
  }
  
  .section-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 16px;
  }
  
  .section-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(32px, 5vw, 52px);
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--black);
    max-width: 600px;
    margin-bottom: 64px;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    background: var(--grey-200);
    border: 2px solid var(--grey-200);
    border-radius: 20px;
    overflow: hidden;
  }
  
  .feature-card {
    background: var(--white);
    padding: 40px 36px;
    transition: background 0.2s;
  }
  
  .feature-card:hover {
    background: var(--grey-100);
  }
  
  .feature-card.blue {
    background: var(--blue);
  }
  .feature-card.blue {
    background: var(--blue);
    cursor: default;
  }
  
  .feature-card.blue:hover {
    background: var(--blue-dark);
  }
  
  .feature-card.blue .feature-name {
    color: var(--white);
  }
  
  .feature-card.blue .feature-desc {
    color: rgba(255,255,255,0.8);
  }
  
  .feature-card.blue .feature-icon {
    background: rgba(255,255,255,0.15);
  }
  
  .feature-card.gold .feature-icon {
    background: var(--gold);
  }
  
  .feature-icon {
    width: 44px; height: 44px;
    background: var(--black);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 20px;
  }
  
  .feature-name {
    font-size: 18px;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
  }
  
  .feature-desc {
    font-size: 14px;
    color: var(--grey-600);
    line-height: 1.6;
    font-weight: 300;
  }

/* FASTING SECTION */
.fasting-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 100px 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  
  .fasting-text h2 {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(32px, 4vw, 48px);
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--black);
    margin-bottom: 20px;
  }
  
  .fasting-text p {
    font-size: 16px;
    color: var(--grey-600);
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 16px;
  }
  
  .fasting-card {
    background: var(--grey-100);
    border-radius: 20px;
    padding: 40px;
  }
  
  .fasting-card-title {
    font-size: 12px;
    font-weight: 500;
    color: var(--blue);
    margin-bottom: 8px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  
  .fasting-card h3 {
    font-family: 'DM Serif Display', serif;
    font-size: 28px;
    letter-spacing: -1px;
    line-height: 1.2;
    color: var(--black);
    margin-bottom: 24px;
  }
  
  .fasting-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--grey-200);
  }
  
  .fasting-item:last-child {
    border-bottom: none;
  }
  
  .fasting-dot {
    width: 8px; height: 8px;
    background: var(--blue);
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
  }
  
  .fasting-item-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 2px;
  }
  
  .fasting-item-sub {
    font-size: 13px;
    color: var(--grey-400);
    line-height: 1.4;
  }

/* CTA SECTION */
.cta-section {
    background: var(--black);
    padding: 100px 48px;
    text-align: center;
  }
  
  .cta-section h2 {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(36px, 6vw, 72px);
    letter-spacing: -2px;
    line-height: 1.0;
    color: var(--white);
    max-width: 700px;
    margin: 0 auto 24px;
  }
  
  .cta-section h2 em {
    font-style: italic;
    color: var(--blue);
  }
  
  .cta-section p {
    font-size: 18px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 48px;
    font-weight: 300;
  }
  
  .cta-form {
    display: flex;
    max-width: 400px;
    margin: 0 auto;
    border-radius: 100px;
    overflow: hidden;
    border: 1.5px solid rgba(255,255,255,0.15);
    transition: border-color 0.2s;
  }
  
  .cta-form:focus-within {
    border-color: var(--blue);
  }
  
  .cta-form input {
    flex: 1;
    border: none;
    outline: none;
    padding: 16px 24px;
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    color: var(--white);
    background: transparent;
  }
  
  .cta-form input::placeholder {
    color: rgba(255,255,255,0.3);
  }
  
  .cta-form button {
    background: var(--blue);
    color: var(--white);
    border: none;
    padding: 14px 24px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    border-radius: 100px;
    margin: 4px;
  }
  
  .cta-form button:hover {
    background: var(--blue-dark);
  }
  
  #cta-success {
    justify-content: center;
    margin-top: 16px;
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border-color: rgba(255,255,255,0.2);
  }
  
  .cta-note {
    margin-top: 20px;
    font-size: 13px;
    color: rgba(255,255,255,0.3);
  }
  
  /* FOOTER */
  footer {
    padding: 40px 48px;
    border-top: 1px solid var(--grey-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .footer-logo {
    font-family: 'DM Serif Display', serif;
    font-size: 18px;
    color: var(--black);
  }
  
  .footer-logo span {
    color: var(--blue);
  }
  
  footer p {
    font-size: 13px;
    color: var(--grey-400);
  }
  
  /* RESPONSIVE */
  @media (max-width: 768px) {
    nav {
      padding: 20px 24px;
    }
  
    .features {
      padding: 60px 24px;
    }
  
    .features-grid {
      grid-template-columns: 1fr;
    }
  
    .fasting-section {
      grid-template-columns: 1fr;
      gap: 40px;
      padding: 60px 24px;
    }
  
    .cta-section {
      padding: 60px 24px;
    }
  
    footer {
        padding: 32px 48px;
        border-top: 1px solid var(--grey-200);
        display: flex;
        justify-content: space-between;
        align-items: center;
        min-height: 80px;
      }
  }

/* HOME SECTION */
.home-section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 48px 100px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  
  .home-text h2 {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(32px, 4vw, 48px);
    letter-spacing: -1.5px;
    line-height: 1.1;
    color: var(--black);
    margin-bottom: 20px;
  }
  
  .home-text p {
    font-size: 16px;
    color: var(--grey-600);
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 16px;
  }
  
  @media (max-width: 768px) {
    .home-section {
      grid-template-columns: 1fr;
      gap: 40px;
      padding: 0 24px 60px;
    }
  }