:root{
    --white: #FFFFFF;
    --ink: #0F172A;
    --ink-soft: #1E293B;
    --slate: #64748B;
    --slate-light: #94A3B8;
    --line: #E2E8F0;
    --surface: #F8FAFC;
    --accent-blue: #3B5BFD;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 9px;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --max-w: 1180px;
  }

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

  html{ scroll-behavior: smooth; }

  body{
    background: var(--white);
    color: var(--ink);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  h1, h2, h3, .display{
    font-family: "Plus Jakarta Sans", "Inter", sans-serif;
    color: var(--ink);
    letter-spacing: -0.02em;
    line-height: 1.08;
  }

  a{ color: inherit; text-decoration: none; }
  ul{ list-style: none; }
  img, svg{ display: block; max-width: 100%; }

  @media (prefers-reduced-motion: reduce){
    *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  }

  :focus-visible{
    outline: 2px solid var(--accent-blue);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .wrap{
    max-width: var(--max-w);
    margin: 0 auto;
    padding-inline: clamp(20px, 5vw, 48px);
  }

  /* ---------- NAV ---------- */
  header.nav{
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border-bottom: 1px solid var(--line);
  }

  .nav-inner{
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }

  .brand{
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-family: "Plus Jakarta Sans", sans-serif;
    font-size: 1.02rem;
    letter-spacing: -0.01em;
  }

  .brand-mark{
    width: 34px;
    height: 34px;
    object-fit: contain;
    flex-shrink: 0;
  }

  .nav-links{
    display: flex;
    align-items: center;
    gap: 36px;
  }

  .nav-links a:not(.nav-cta){
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--slate);
    transition: color 0.2s var(--ease);
  }
  .nav-links a:not(.nav-cta):hover{ color: var(--ink); }

  .nav-cta{
    font-size: 0.88rem;
    font-weight: 600;
    padding: 9px 18px;
    border: 1px solid var(--ink);
    border-radius: 100px;
    transition: background 0.2s var(--ease), color 0.2s var(--ease);
  }
  .nav-cta:hover{ background: var(--ink); color: var(--white); }

  .nav-toggle{ display: none; }

  /* ---------- HERO ---------- */
  .hero{
    position: relative;
    padding: clamp(90px, 14vw, 150px) 0 clamp(70px, 10vw, 110px);
    text-align: center;
    isolation: isolate;
  }

  .hero-bg{
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
      radial-gradient(circle at 1.5px 1.5px, #CBD5E1 1.4px, transparent 0);
    background-size: 34px 34px;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, #000 10%, transparent 75%);
    mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, #000 10%, transparent 75%);
    opacity: 0.9;
  }

  .hero-glow{
    position: absolute;
    top: -280px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 620px;
    z-index: -1;
    background: radial-gradient(closest-side, rgba(59,91,253,0.10), rgba(59,91,253,0) 70%);
    pointer-events: none;
  }

  .eyebrow{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-blue);
    background: #EEF1FF;
    padding: 7px 16px;
    border-radius: 100px;
    margin-bottom: 28px;
    animation: fadeUp 0.7s var(--ease) both;
  }

  .eyebrow-dot{
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent-blue);
  }

  .hero h1{
    font-size: clamp(2.3rem, 5.4vw, 4.4rem);
    font-weight: 800;
    max-width: 15ch;
    margin-inline: auto;
    animation: fadeUp 0.7s 0.08s var(--ease) both;
  }

  .hero p.sub{
    margin: 26px auto 0;
    max-width: 620px;
    color: var(--slate);
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    line-height: 1.65;
    animation: fadeUp 0.7s 0.16s var(--ease) both;
  }

  .hero-ctas{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 40px;
    animation: fadeUp 0.7s 0.24s var(--ease) both;
  }

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

  .btn{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 26px;
    border-radius: 100px;
    transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
    white-space: nowrap;
  }
  .btn:hover{ transform: translateY(-2px); }

  .btn-solid{
    background: var(--ink);
    color: var(--white);
    box-shadow: 0 8px 20px -8px rgba(15,23,42,0.45);
  }
  .btn-solid:hover{ background: var(--ink-soft); }

  .btn-outline{
    background: var(--white);
    color: var(--ink);
    border: 1px solid var(--line);
  }
  .btn-outline:hover{ border-color: var(--ink); }

  /* ---------- SECTION SHELL ---------- */
  section{ padding: clamp(64px, 9vw, 110px) 0; }

  .section-head{
    max-width: 640px;
    margin-bottom: clamp(40px, 6vw, 64px);
  }
  .section-head.center{ margin-inline: auto; text-align: center; }

  .kicker{
    display: block;
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--slate-light);
    margin-bottom: 14px;
  }

  .section-head h2{
    font-size: clamp(1.7rem, 3.2vw, 2.5rem);
    font-weight: 700;
  }

  .section-head p{
    margin-top: 16px;
    color: var(--slate);
    font-size: 1.03rem;
    line-height: 1.65;
  }

  /* ---------- PHILOSOPHY GRID ---------- */
  .philosophy-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
  }

  .p-card{
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
  }
  .p-card:hover{
    border-color: #CBD5E1;
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -24px rgba(15,23,42,0.18);
  }

  .p-icon{
    width: 40px; height: 40px;
    border-radius: 10px;
    background: var(--ink);
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .p-icon svg{ width: 18px; height: 18px; }

  .p-card h3{
    font-size: 1.12rem;
    font-weight: 700;
    margin-bottom: 10px;
  }
  .p-card p{
    color: var(--slate);
    font-size: 0.95rem;
    line-height: 1.65;
  }

  /* ---------- ECOSYSTEM ---------- */
  .division{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
    padding: clamp(36px, 5vw, 56px) 0;
  }
  .division + .division{ border-top: 1px solid var(--line); }
  .division.reverse .div-visual{ order: 2; }
  .division.reverse .div-copy{ order: 1; }

  .div-copy .div-tag{
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: 16px;
  }

  .div-copy h3{
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 700;
    margin-bottom: 16px;
  }

  .div-copy p{
    color: var(--slate);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 26px;
  }

  .asset-list{
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
  }

  .asset-row{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 13px 18px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
  }
  .asset-name{ font-weight: 600; color: var(--ink); }

  .status-pill{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 100px;
    flex-shrink: 0;
  }
  .status-pill.live{ color: #15803D; background: #F0FDF4; }
  .status-pill.dev{ color: #B45309; background: #FFFBEB; }
  .status-pill .dot{ width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
  .status-pill.live .dot{ animation: pulse 2s ease-in-out infinite; }

  @keyframes pulse{
    0%, 100%{ opacity: 1; }
    50%{ opacity: 0.35; }
  }

  .div-visual{
    aspect-ratio: 4/3.1;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--line);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .div-visual .grid-lines{
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(to right, var(--line) 1px, transparent 1px),
      linear-gradient(to bottom, var(--line) 1px, transparent 1px);
    background-size: 32px 32px;
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 20%, transparent 90%);
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 20%, transparent 90%);
  }

  .visual-glyph{
    width: 78px; height: 78px;
    border-radius: 18px;
    background: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 24px 48px -20px rgba(15,23,42,0.4);
    z-index: 1;
  }
  .visual-glyph svg{ width: 34px; height: 34px; }

  /* ---------- COMMUNITY ---------- */
  .community-panel{
    background: var(--ink);
    border-radius: 28px;
    padding: clamp(40px, 7vw, 72px);
    color: var(--white);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(32px, 5vw, 56px);
    align-items: center;
  }

  .community-panel h2{
    color: var(--white);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 20px;
  }

  .community-panel p{
    color: #CBD5E1;
    font-size: 1rem;
    line-height: 1.72;
  }

  .community-panel .sub-note{
    margin-top: 18px;
    font-size: 0.88rem;
    color: #64748B;
  }

  .community-side{
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .credit-row{
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
  }

  .credit-icon{
    width: 34px; height: 34px;
    border-radius: 9px;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .credit-icon svg{ width: 16px; height: 16px; }

  .credit-row div span{
    display: block;
  }
  .credit-title{ font-size: 0.9rem; font-weight: 600; color: var(--white); }
  .credit-desc{ font-size: 0.8rem; color: #94A3B8; margin-top: 2px; }

  /* ---------- FOOTER ---------- */
  footer{
    border-top: 1px solid var(--line);
    padding: 40px 0;
  }

  .footer-inner{
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
  }

  .footer-copy{
    font-size: 0.85rem;
    color: var(--slate-light);
    max-width: 46ch;
    line-height: 1.6;
  }

  .footer-links{
    display: flex;
    gap: 28px;
  }
  .footer-links a{
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--slate);
    transition: color 0.2s var(--ease);
  }
  .footer-links a:hover{ color: var(--ink); }

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 860px){
    .nav-links{
      position: fixed;
      top: 72px; left: 0; right: 0;
      background: var(--white);
      border-bottom: 1px solid var(--line);
      flex-direction: column;
      align-items: flex-start;
      padding: 22px clamp(20px,5vw,48px) 28px;
      gap: 18px;
      transform: translateY(-8px);
      opacity: 0;
      visibility: hidden;
      transition: all 0.25s var(--ease);
    }
    .nav-links.open{
      transform: translateY(0);
      opacity: 1;
      visibility: visible;
    }
    .nav-toggle{
      display: flex;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .nav-toggle span{
      width: 20px; height: 2px;
      background: var(--ink);
      border-radius: 2px;
    }

    .division, .division.reverse{
      grid-template-columns: 1fr;
    }
    .division.reverse .div-visual,
    .division.reverse .div-copy{ order: initial; }
    .div-visual{ order: -1; }

    .community-panel{
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 520px){
    .footer-inner{ flex-direction: column; align-items: flex-start; }
  }