:root{--bg:#f6f7fb;--paper:#fff;--ink:#14181f;--sub:#3d4756;--mut:#6b7686;--line:#e6e9ef;--line2:#eef1f5;
    --brand:#ff2d55;--brand2:#6366f1;--ok:#10b981;--chip:#f2f3f8;
    --grad:linear-gradient(120deg,#ff2d55 0%,#ff5e3a 45%,#f7b500 100%);--grad2:linear-gradient(135deg,#6366f1,#8b5cf6);
    --glass:rgba(255,255,255,.06);--shadow:0 18px 50px -20px rgba(16,20,40,.28);}
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:'Pretendard','Apple SD Gothic Neo',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.78;-webkit-font-smoothing:antialiased;font-size:16.5px}
  a{color:var(--brand2)}
  .wrap{max-width:900px;margin:0 auto;padding:0 22px}
  header{background:rgba(9,11,16,.72);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;z-index:30}
  .nav{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:900px;margin:0 auto;padding:0 22px}
  .logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:18px;color:#fff;text-decoration:none;letter-spacing:-.4px}
  .logo .b{width:34px;height:34px;border-radius:11px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px}
  .logo small{color:#8b93a6;font-weight:600;font-size:12px}
  .cta-top{background:var(--grad);color:#fff!important;padding:9px 18px;border-radius:999px;font-weight:700;font-size:14px;text-decoration:none}
  .hero{position:relative;background:radial-gradient(900px 500px at 10% -10%,rgba(99,102,241,.35),transparent 55%),radial-gradient(700px 420px at 100% 0%,rgba(255,45,85,.28),transparent 50%),linear-gradient(180deg,#0b0d12,#11151f);color:#e8ecf4;padding:52px 0 72px}
  .crumb{font-size:13px;color:#8b93a6;margin-bottom:16px}
  .crumb a{color:#8b93a6;text-decoration:none}
  .pill{display:inline-flex;align-items:center;gap:8px;background:var(--glass);border:1px solid rgba(255,255,255,.14);color:#dfe4ee;font-size:13px;font-weight:600;padding:7px 15px;border-radius:999px;margin-bottom:18px}
  .pill .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}
  h1{font-size:clamp(27px,4.4vw,40px);font-weight:900;letter-spacing:-1.2px;line-height:1.24;color:#fff}
  h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .dek{color:#aab2c2;font-size:16px;margin-top:16px;max-width:680px}
  .btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;background:var(--grad);color:#fff;margin-top:24px}
  main{padding:48px 0}
  section{margin-bottom:44px}
  h2{font-size:clamp(21px,3vw,27px);font-weight:900;letter-spacing:-.6px;margin:0 0 12px}
  p{margin:0 0 15px;color:var(--sub)}
  strong{color:var(--ink)}
  .callout{background:linear-gradient(135deg,#fff5f7,#fff);border:1px solid #ffd7de;border-left:4px solid var(--brand);border-radius:14px;padding:18px 22px;margin:0 0 20px;font-size:15px;color:var(--sub)}
  .callout b{color:var(--brand)}
  ul{margin:0 0 16px;list-style:none}
  ul li{position:relative;padding:11px 0 11px 32px;border-bottom:1px solid var(--line2);color:var(--sub)}
  ul li::before{content:"✓";position:absolute;left:2px;top:11px;width:20px;height:20px;border-radius:6px;background:rgba(16,185,129,.12);color:var(--ok);font-weight:800;font-size:12px;display:grid;place-items:center}
  .related h2{font-size:15px;text-transform:uppercase;letter-spacing:1px;color:var(--mut)}
  .chips{display:flex;flex-wrap:wrap;gap:9px}
  .chips a{background:var(--chip);color:var(--sub);text-decoration:none;font-size:13.5px;font-weight:600;padding:8px 15px;border-radius:999px;border:1px solid var(--line)}
  .chips a:hover{background:var(--grad);color:#fff;border-color:transparent}
  .band{position:relative;background:linear-gradient(135deg,#11151f,#1a1030);color:#fff;border-radius:24px;padding:44px 30px;text-align:center;overflow:hidden;box-shadow:var(--shadow)}
  .band h2{color:#fff}
  .band p{color:#c1c8d6;max-width:520px;margin:12px auto 20px}
  .band .btn{margin-top:0}
  footer{background:#0b0d12;color:#8b93a6;padding:40px 0;margin-top:56px;font-size:13.5px;text-align:center}
  footer a{color:#c3cad6;text-decoration:none}

  /* accessibility: respect reduced-motion preference */
  @media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
      transition-duration:.001ms!important}
  }
  :focus-visible{outline:3px solid var(--brand2);outline-offset:2px;border-radius:4px}
  .skip{position:absolute;left:-9999px;top:0;z-index:100;background:#fff;color:var(--ink);
    padding:12px 18px;border-radius:0 0 10px 0;font-weight:700;box-shadow:var(--shadow)}
  .skip:focus{left:0}