:root{
    --bg: #F6F7FB;
    --card: #FFFFFF;
    --card-2: #F1F3F8;
    --line: #E9EBF1;
    --text: #171A21;
    --text-dim: #6B7280;
    --text-faint: #9CA3AF;
    --red: #FF3B4E;
    --red-dim: #E2233A;
    --violet: #7C5CFF;
    --violet-dim: #5A3FE0;
    --green: #16A34A;
    --amber: #F59E0B;
    --blue: #2563EB;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --app-max: 430px;
  }

  *{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
  html{background:#DDE1EA;}
  body{ font-family: var(--font-body); color: var(--text); background: var(--bg); display:flex; justify-content:center; min-height:100vh; }

  #app{ width:100%; max-width: var(--app-max); min-height:100vh; position:relative; background: var(--bg); overflow-x:hidden; }

  @media (min-width: 431px){
    body{ background:#E7E9F0; padding: 28px 0; align-items:flex-start; }
    #app{
      min-height: calc(100vh - 56px);
      border-radius: 34px;
      box-shadow: 0 0 0 8px #ffffff, 0 0 0 9px #d9dce4, 0 40px 80px -20px rgba(20,24,40,0.25);
      overflow: hidden;
      position:relative;
    }
    #app::before{
      content:"";
      position:absolute; top:0; left:50%; transform:translateX(-50%);
      width:120px; height:22px; background:#ffffff; border-radius:0 0 16px 16px; z-index:1000;
    }
  }

  a{ text-decoration:none; color:inherit; }
  button{ font-family:inherit; border:none; background:none; color:inherit; cursor:pointer; }
  ::-webkit-scrollbar{ display:none; }

  /* ---------- HEADER ---------- */
  header{
    position:fixed; top:0; left:50%; transform:translateX(-50%);
    width:100%; max-width: var(--app-max); height:60px;
    display:flex; align-items:center; justify-content:space-between;
    padding: 0 14px;
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-bottom: 1px solid var(--line);
    z-index: 500;
  }
  @media (min-width: 431px){ header{ border-radius: 34px 34px 0 0; } }

  .back-btn{
    width:38px; height:38px; border-radius:12px;
    display:flex; align-items:center; justify-content:center;
    background: var(--card-2);
    border:1px solid var(--line);
    transition: transform .15s ease, background .2s ease;
  }
  .back-btn svg{ width:18px; height:18px; stroke: var(--text); }
  .back-btn:active{ transform: scale(0.92); background: var(--line); }

  .page-title{
    font-family: var(--font-display);
    font-size:15px; font-weight:700; color: var(--text);
  }

  .brand{
    font-family: var(--font-display); font-weight:800; font-size:19px;
    letter-spacing:-0.02em; color: var(--text); display:flex; align-items:center;
  }
  .brand .accent{ color: var(--red); }
  .brand-dot{ width:5px;height:5px;border-radius:50%; background: var(--red); margin-left:5px; }

  /* ---------- MAIN ---------- */
  main{ padding: 90px 24px 34px; min-height:100vh; display:flex; flex-direction:column; }

  .reveal{ opacity:0; transform: translateY(14px); transition: opacity .5s cubic-bezier(.2,.8,.2,1), transform .5s cubic-bezier(.2,.8,.2,1); }
  .reveal.in{ opacity:1; transform:none; }

  /* ---------- ICON HERO ---------- */
  .icon-hero{
    display:flex; justify-content:center; margin-bottom: 22px;
  }
  .icon-hero .circle{
    width:84px; height:84px; border-radius:50%;
    background: linear-gradient(135deg, var(--red) 0%, var(--violet-dim) 130%);
    display:flex; align-items:center; justify-content:center;
    box-shadow: 0 16px 32px -10px rgba(255,59,78,0.35);
  }
  .icon-hero svg{ width:38px; height:38px; stroke:#fff; }

  .welcome{ text-align:center; margin-bottom: 28px; }
  .welcome h1{ font-family: var(--font-display); font-size:19px; font-weight:800; letter-spacing:-0.01em; }
  .welcome p{ font-size:13px; color: var(--text-dim); margin-top:8px; line-height:1.6; padding: 0 6px; }

  /* ---------- INFO STEPS ---------- */
  .steps{
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 16px;
    display:flex; flex-direction:column; gap:14px;
    margin-bottom: 20px;
  }
  .step-row{ display:flex; gap:12px; align-items:flex-start; }
  .step-num{
    width:26px; height:26px; border-radius:50%; flex-shrink:0;
    background: var(--card-2); border:1px solid var(--line);
    display:flex; align-items:center; justify-content:center;
    font-family: var(--font-display); font-size:12px; font-weight:800; color: var(--red-dim);
  }
  .step-text{ font-size:12.5px; line-height:1.5; color: var(--text-dim); padding-top:3px; }
  .step-text b{ color: var(--text); }

  /* ---------- WARNING BOX ---------- */
  .warn-box{
    display:flex; gap:10px; align-items:flex-start;
    background: #FFF7E6;
    border: 1px solid rgba(245,158,11,0.3);
    border-radius: var(--radius-md);
    padding: 13px 14px;
    margin-bottom: 26px;
  }
  .warn-box .icon-circle{
    width:28px; height:28px; border-radius:50%; flex-shrink:0;
    background: rgba(245,158,11,0.16);
    display:flex; align-items:center; justify-content:center;
  }
  .warn-box svg{ width:14px; height:14px; stroke: var(--amber); }
  .warn-box p{ font-size:11.5px; line-height:1.5; color: #8A5A05; }
  .warn-box b{ color: #6B4400; }

  /* ---------- CTA ---------- */
  .submit-btn{
    width:100%;
    padding: 15px;
    border-radius: 100px;
    background: linear-gradient(135deg, #25D366, #128C4A);
    color:#fff;
    font-size:14.5px; font-weight:700;
    display:flex; align-items:center; justify-content:center; gap:8px;
    transition: transform .15s ease, opacity .2s ease;
  }
  .submit-btn svg{ width:18px; height:18px; fill:#fff; }
  .submit-btn:active{ transform: scale(0.97); }

  .back-login-row{
    display:flex; justify-content:center; align-items:center; gap:5px;
    font-size:13px; color: var(--text-dim);
    margin-top: 18px;
  }
  .back-login-row a{ color: var(--red-dim); font-weight:700; }
  .back-login-row a:active{ opacity:0.6; }

  .spacer{ flex:1; }

  .safe-end{ height:6px; }