@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --blue:#378ADD; --teal:#1D9E75; --amber:#BA7517;
    --coral:#D85A30; --purple:#7F77DD; --green:#639922;
    --bg:#0f1117; --surface:#1a1d27; --surface2:#22263a;
    --border:rgba(255,255,255,0.08); --text:#f0f0f0; --muted:rgba(240,240,240,0.5);
  }
  html,body{width:100%;height:100%;overflow:hidden;background:var(--bg);font-family:'Inter',system-ui,sans-serif;color:var(--text);}
  #app{width:100vw;height:100vh;position:relative;overflow:hidden;}
  #progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--purple));transition:width 0.4s ease;z-index:100;}
  #counter{position:fixed;top:18px;right:24px;font-size:13px;color:var(--muted);z-index:100;font-weight:500;letter-spacing:0.05em;}
  #nav-hint{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);z-index:100;background:rgba(255,255,255,0.04);border:1px solid var(--border);padding:6px 14px;border-radius:20px;transition:opacity 0.5s;white-space:nowrap;}
  #nav-hint kbd{background:rgba(255,255,255,0.1);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:11px;font-family:inherit;}
  #dots{position:fixed;bottom:20px;right:24px;display:flex;gap:6px;z-index:100;align-items:center;}
  .dot{width:6px;height:6px;border-radius:50%;background:var(--border);cursor:pointer;transition:all 0.3s;border:1px solid rgba(255,255,255,0.15);}
  .dot.active{background:white;transform:scale(1.3);}
  .slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:52px 80px;opacity:0;pointer-events:none;transform:translateX(60px);transition:opacity 0.45s ease,transform 0.45s ease;}
  .slide.active{opacity:1;pointer-events:all;transform:translateX(0);}
  .slide.exit{opacity:0;transform:translateX(-60px);transition:opacity 0.3s ease,transform 0.3s ease;}
  .slide-inner{width:100%;max-width:980px;display:flex;flex-direction:column;gap:24px;}
  .cover-inner{text-align:center;align-items:center;}
  .cover-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(55,138,221,0.15);border:1px solid rgba(55,138,221,0.3);color:#7bbfff;font-size:13px;font-weight:600;padding:5px 14px;border-radius:20px;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:8px;}
  .cover-title{font-size:clamp(36px,5vw,64px);font-weight:800;line-height:1.1;background:linear-gradient(135deg,#fff 30%,#7bbfff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
  .cover-sub{font-size:clamp(16px,2vw,20px);color:var(--muted);margin-top:10px;}
  .cover-tags{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:8px;}
  .tag{font-size:14px;font-weight:600;padding:5px 14px;border-radius:20px;border:1px solid;display:inline-flex;align-items:center;line-height:1;}
  .slide-header{display:flex;flex-direction:column;gap:4px;}
  .step-badge{display:inline-flex;align-items:baseline;gap:10px;margin-bottom:2px;}
  .step-number{font-size:clamp(52px,7vw,80px);font-weight:800;line-height:1;letter-spacing:-3px;opacity:0.18;color:white;user-select:none;}
  .step-topic{font-size:12px;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;padding:4px 12px;border-radius:20px;border:1px solid;align-self:flex-end;margin-bottom:10px;}
  .slide-title{font-size:clamp(26px,3.5vw,42px);font-weight:800;line-height:1.1;color:white;}
  .slide-sub{font-size:20px;color:var(--muted);margin-top:4px;}
  .grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
  .concept-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px 22px;display:flex;flex-direction:column;gap:8px;position:relative;overflow:hidden;transition:transform 0.2s;}
  .concept-card .card-icon{font-size:34px;line-height:1;}
  .concept-card .card-title{font-size:20px;font-weight:700;color:white;}
  .concept-card .card-label{font-size:11px;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;opacity:0.6;}
  .concept-card .card-desc{font-size:16px;color:var(--muted);line-height:1.6;}
  .concept-card code{font-size:14px;background:rgba(255,255,255,0.08);padding:2px 6px;border-radius:4px;font-family:'Courier New',monospace;color:#adf;}
  .concept-card .card-accent{position:absolute;top:0;right:0;width:80px;height:80px;border-radius:50%;opacity:0.07;transform:translate(20px,-20px);}
  .card-blue{border-color:rgba(55,138,221,0.25);} .card-blue .card-accent{background:var(--blue);} .card-blue .card-label{color:#7bbfff;}
  .card-teal{border-color:rgba(29,158,117,0.25);} .card-teal .card-accent{background:var(--teal);} .card-teal .card-label{color:#5ddbb0;}
  .card-amber{border-color:rgba(186,117,23,0.25);} .card-amber .card-accent{background:var(--amber);} .card-amber .card-label{color:#f5c063;}
  .card-coral{border-color:rgba(216,90,48,0.25);} .card-coral .card-accent{background:var(--coral);} .card-coral .card-label{color:#f5926a;}
  .card-purple{border-color:rgba(127,119,221,0.25);} .card-purple .card-accent{background:var(--purple);} .card-purple .card-label{color:#b0abf5;}
  .card-green{border-color:rgba(99,153,34,0.25);} .card-green .card-accent{background:var(--green);} .card-green .card-label{color:#9dd44a;}
  .step-list{display:flex;flex-direction:column;gap:10px;}
  .step-item{display:flex;align-items:flex-start;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 18px;}
  .step-num{min-width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;}
  .step-content p{font-size:18px;color:white;font-weight:500;margin-bottom:2px;}
  .step-content span{font-size:15px;color:var(--muted);line-height:1.5;}
  .step-content strong{color:#7bbfff;font-weight:600;}
  .highlight{border-radius:12px;padding:16px 20px;border:1px solid;}
  .highlight h3{font-size:15px;font-weight:700;margin-bottom:6px;}
  .highlight p{font-size:16px;line-height:1.6;}
  .highlight code{font-size:14px;background:rgba(255,255,255,0.1);padding:2px 6px;border-radius:4px;font-family:monospace;}
  .hl-blue{background:rgba(55,138,221,0.08);border-color:rgba(55,138,221,0.25);} .hl-blue h3{color:#7bbfff;} .hl-blue p{color:rgba(240,240,240,0.75);}
  .hl-teal{background:rgba(29,158,117,0.08);border-color:rgba(29,158,117,0.25);} .hl-teal h3{color:#5ddbb0;} .hl-teal p{color:rgba(240,240,240,0.75);}
  .hl-amber{background:rgba(186,117,23,0.08);border-color:rgba(186,117,23,0.25);} .hl-amber h3{color:#f5c063;} .hl-amber p{color:rgba(240,240,240,0.75);}
  .hl-coral{background:rgba(216,90,48,0.08);border-color:rgba(216,90,48,0.25);} .hl-coral h3{color:#f5926a;} .hl-coral p{color:rgba(240,240,240,0.75);}
  .hl-purple{background:rgba(127,119,221,0.08);border-color:rgba(127,119,221,0.25);} .hl-purple h3{color:#b0abf5;} .hl-purple p{color:rgba(240,240,240,0.75);}
  .hl-green{background:rgba(99,153,34,0.08);border-color:rgba(99,153,34,0.25);} .hl-green h3{color:#9dd44a;} .hl-green p{color:rgba(240,240,240,0.75);}
  .two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start;}
  .col-left{display:flex;flex-direction:column;gap:12px;}
  .flow-row{display:flex;align-items:stretch;gap:0;flex-wrap:nowrap;justify-content:center;width:100%;}
  .flow-node{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 10px;border-radius:14px;border:1px solid;flex:1;min-width:0;text-align:center;position:relative;}
  .flow-node .fn-icon{font-size:26px;line-height:1;}
  .flow-node .fn-label{font-size:13px;font-weight:700;line-height:1.2;}
  .flow-node .fn-sub{font-size:11px;opacity:0.6;line-height:1.3;}
  .flow-connector{display:flex;align-items:center;padding:0 4px;color:var(--muted);font-size:18px;flex-shrink:0;}
  .info-pill{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 14px;}
  .info-pill strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px;}
  .info-pill span{font-size:14px;color:var(--muted);line-height:1.5;}
  .info-pill code{font-size:13px;background:rgba(255,255,255,0.08);padding:2px 5px;border-radius:4px;font-family:monospace;color:#adf;}
  .checklist{display:flex;flex-direction:column;gap:7px;}
  .check-item{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:13px 18px;cursor:pointer;transition:all 0.25s;user-select:none;}
  .check-item:hover{border-color:rgba(255,255,255,0.15);background:var(--surface2);}
  .check-item.done{opacity:0.4;}
  .check-item.done .check-box{background:rgba(29,158,117,0.2);border-color:var(--teal);}
  .check-item.done .check-icon{opacity:1;color:#5ddbb0;}
  .check-box{width:24px;height:24px;border-radius:6px;border:1.5px solid rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all 0.25s;}
  .check-icon{font-size:14px;opacity:0;transition:opacity 0.2s;}
  .check-label{font-size:17px;color:white;font-weight:500;}
  .check-item.done .check-label{text-decoration:line-through;}
  .domain-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .domain-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 14px;}
  .domain-card .d-name{font-size:15px;font-weight:700;color:white;margin-bottom:4px;font-family:monospace;}
  .domain-card .d-price{font-size:13px;color:var(--muted);}
  .domain-card.available{border-color:rgba(29,158,117,0.4);} .domain-card.available .d-name{color:#5ddbb0;}
  .domain-card.taken{border-color:rgba(216,90,48,0.3);opacity:0.6;} .domain-card.taken .d-name{color:#f5926a;text-decoration:line-through;}
  .avail-badge{display:inline-block;font-size:11px;font-weight:700;padding:2px 7px;border-radius:10px;margin-left:6px;}
  .avail-badge.yes{background:rgba(29,158,117,0.2);color:#5ddbb0;}
  .avail-badge.no{background:rgba(216,90,48,0.2);color:#f5926a;}
  .prompt-box{background:var(--surface);border:1px solid rgba(127,119,221,0.35);border-radius:14px;padding:18px 20px;}
  .prompt-label{font-size:11px;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:#b0abf5;margin-bottom:10px;display:flex;align-items:center;gap:6px;}
  .prompt-text{font-size:14px;color:rgba(240,240,240,0.85);line-height:1.7;font-family:'Courier New',monospace;background:rgba(0,0,0,0.25);border-radius:8px;padding:12px 14px;border:1px solid rgba(127,119,221,0.15);}
  .prompt-hint{font-size:13px;color:var(--muted);margin-top:10px;}
  /* THANK YOU SLIDE */
  .ty-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;text-align:center;height:100%;}
  .ty-photo{width:120px;height:120px;border-radius:50%;object-fit:cover;border:3px solid rgba(55,138,221,0.4);box-shadow:0 0 40px rgba(55,138,221,0.15);}
  .ty-title{font-size:clamp(32px,4vw,54px);font-weight:800;line-height:1.1;background:linear-gradient(135deg,#fff 30%,#7bbfff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
  .ty-name{font-size:22px;font-weight:700;color:white;margin-top:-6px;}
  .ty-role{font-size:17px;color:var(--muted);margin-top:2px;}
  .ty-row{display:flex;align-items:center;gap:40px;margin-top:8px;}
  .ty-qr-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;}
  .ty-qr{width:130px;height:130px;background:white;border-radius:12px;padding:8px;display:flex;align-items:center;justify-content:center;}
  .ty-qr svg{width:114px;height:114px;}
  .ty-qr-label{font-size:13px;color:var(--muted);}
  .ty-links{display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
  .ty-link{display:flex;align-items:center;gap:10px;font-size:16px;color:#7bbfff;font-weight:500;}
  .ty-link span{font-size:20px;}

  /* POPUP */
  #prompt-overlay {
    display: none; position: fixed; inset: 0; z-index: 500;
    background: rgba(0,0,0,0.75); backdrop-filter: blur(4px);
    align-items: center; justify-content: center;
  }
  #prompt-overlay.open { display: flex; }
  #prompt-modal {
    background: #1a1d27; border: 1px solid rgba(127,119,221,0.4);
    border-radius: 20px; padding: 32px 36px; max-width: 620px; width: 90%;
    position: relative; box-shadow: 0 0 60px rgba(127,119,221,0.15);
    animation: popIn 0.3s ease;
  }
  @keyframes popIn { from { opacity:0; transform:scale(0.92) translateY(16px); } to { opacity:1; transform:scale(1) translateY(0); } }
  #prompt-modal .pm-label {
    font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
    color: #b0abf5; margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
  }
  #prompt-modal .pm-title {
    font-size: 22px; font-weight: 800; color: white; margin-bottom: 6px;
  }
  #prompt-modal .pm-sub {
    font-size: 15px; color: rgba(240,240,240,0.5); margin-bottom: 22px;
  }
  #prompt-modal .pm-box {
    background: rgba(0,0,0,0.35); border: 1px solid rgba(127,119,221,0.2);
    border-radius: 12px; padding: 20px 22px;
    font-family: 'Courier New', monospace; font-size: 16px;
    color: rgba(240,240,240,0.88); line-height: 1.85; white-space: pre-wrap;
    margin-bottom: 20px;
  }
  #prompt-modal .pm-box em { color: #b0abf5; font-style: normal; }
  #prompt-modal .pm-actions { display: flex; gap: 12px; justify-content: flex-end; }
  #prompt-modal .pm-copy {
    display: flex; align-items: center; gap: 8px;
    background: rgba(127,119,221,0.2); border: 1px solid rgba(127,119,221,0.45);
    color: #b0abf5; font-size: 14px; font-weight: 700;
    padding: 10px 22px; border-radius: 10px; cursor: pointer;
    font-family: inherit; transition: background 0.2s;
  }
  #prompt-modal .pm-copy:hover { background: rgba(127,119,221,0.35); }
  #prompt-modal .pm-close {
    display: flex; align-items: center; gap: 8px;
    background: transparent; border: 1px solid rgba(255,255,255,0.12);
    color: rgba(240,240,240,0.5); font-size: 14px; font-weight: 600;
    padding: 10px 22px; border-radius: 10px; cursor: pointer;
    font-family: inherit; transition: all 0.2s;
  }
  #prompt-modal .pm-close:hover { border-color: rgba(255,255,255,0.3); color: white; }
  #prompt-modal .pm-x {
    position: absolute; top: 16px; right: 18px;
    background: transparent; border: none; color: rgba(255,255,255,0.3);
    font-size: 22px; cursor: pointer; line-height: 1; padding: 4px;
  }
  #prompt-modal .pm-x:hover { color: white; }
  #copy-confirm { font-size: 12px; color: #5ddbb0; margin-top: 8px; text-align: right; min-height: 18px; }


  @media (max-width: 600px) {
    .slide { padding: 72px 20px 52px; }
    .slide-inner { gap: 16px; }
    .two-col { grid-template-columns: 1fr; }
    .grid-2x2 { grid-template-columns: 1fr; }
    .flow-row { display: grid !important; grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .flow-node { min-width: 0; padding: 10px 8px; flex-direction: column; align-items: center; text-align: center; }
    .flow-node .fn-icon { font-size: 22px; }
    .flow-node .fn-label { font-size: 12px; }
    .flow-node .fn-sub { display: none; }
    .flow-connector { display: none; }
    .step-number { font-size: 42px; }
    .slide-title { font-size: 24px; }
    .slide-sub { font-size: 16px; }
    .step-content p { font-size: 15px; }
    .step-content span { font-size: 13px; }
    .check-label { font-size: 14px; }
    .domain-options { grid-template-columns: 1fr; }
    .cover-title { font-size: 32px; }
    #nav-hint { font-size: 10px; padding: 5px 10px; }
    #dots { right: 12px; }
    #counter { right: 12px; top: 14px; }
    .ty-row { flex-direction: column; align-items: center; gap: 24px; }
    .ty-links { align-items: center; }
    .ty-title { font-size: 28px; }
    .ty-name { font-size: 18px; }
    .info-pill { min-width: 0; }
    #slide-5 .slide-inner > div:last-child { grid-template-columns: 1fr !important; gap: 8px !important; }
    #slide-5 .slide-inner > div:last-child .info-pill { padding: 10px 14px; }
  }