/* Marca TurbineH / yesIF: blanco, hielo y navy; azul vivo para lo activo; esquinas rectas; Inter. */
:root {
  --white: #ffffff; --soft: #f1f6fd; --soft2: #e6eefb; --ice: #c0e5ff; --light: #e1f1ff;
  --ink: #0b1a47; --ink2: #4f5a7a; --ink3: #5d6886; --navy: #001a5a;
  --blue: #2b2bff; --blue-press: #0a2a72; --blue-soft: #eaeaff;
  --line: #e7e8ed; --line2: #d4d6df; --ok: #0f7a4f; --ok-soft: #e5f4ec; --danger: #c81e3a; --danger-soft: #fdecef;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--font); color: var(--ink); background: var(--soft); -webkit-font-smoothing: antialiased; line-height: 1.5; }
a { color: var(--blue); }
.top { background: var(--navy); color: var(--white); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--white); text-decoration: none; }
.brand img { height: 28px; width: auto; display: block; background: var(--white); padding: 4px 6px; }
.brand b { font-weight: 700; letter-spacing: -0.02em; font-size: 17px; }
.brand span { color: var(--ice); font-size: 13px; }
.top .meta { font-size: 13px; color: var(--ice); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
main { padding: 40px 0 64px; }
.kicker { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink3); font-weight: 600; margin: 0 0 8px; }
h1 { font-size: 32px; line-height: 1.15; letter-spacing: -0.03em; font-weight: 600; margin: 0 0 12px; color: var(--navy); }
.lead { font-size: 17px; color: var(--ink2); margin: 0 0 28px; }
.card { background: var(--white); border: 1px solid var(--line); padding: 32px; }
.progress { display: flex; align-items: center; gap: 12px; margin: 0 0 20px; font-size: 13px; color: var(--ink3); }
.bar { flex: 1; height: 6px; background: var(--soft2); }
.bar i { display: block; height: 100%; width: 0; background: var(--blue); transition: width .25s ease; }
.q-title { font-size: 22px; line-height: 1.3; letter-spacing: -0.015em; font-weight: 600; margin: 0 0 6px; color: var(--ink); }
.q-hint { color: var(--ink2); margin: 0 0 18px; font-size: 15px; }
.req { color: var(--blue); }
label.field { display: block; font-size: 13px; font-weight: 600; color: var(--ink2); margin: 0 0 6px; }
input[type=text], input[type=email], input[type=url], input[type=tel], input[type=password], textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: var(--white);
  border: 1px solid var(--line2); border-radius: 0; padding: 12px 14px; outline: none; transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 132px; resize: vertical; }
input:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }
.opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.opt { position: relative; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1px solid var(--line2); background: var(--white); cursor: pointer; font-size: 15px; transition: border-color .15s, background .15s; user-select: none; }
.opt:hover { border-color: var(--blue); }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt .box { flex: none; width: 18px; height: 18px; border: 1.5px solid var(--line2); background: var(--white); display: grid; place-items: center; }
.opt.radio .box { border-radius: 50%; }
.opt.on { border-color: var(--blue); background: var(--blue-soft); color: var(--navy); font-weight: 500; }
.opt.on .box { border-color: var(--blue); background: var(--blue); }
.opt.on .box::after { content: ""; width: 8px; height: 8px; background: var(--white); }
.opt.radio.on .box::after { border-radius: 50%; }
.opt:focus-within { box-shadow: 0 0 0 3px var(--blue-soft); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid2 .full { grid-column: 1 / -1; }
.nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 28px; }
.btn { font: inherit; font-size: 15px; font-weight: 600; border: 1px solid var(--navy); background: var(--navy); color: var(--white); padding: 13px 24px; cursor: pointer; border-radius: 0; transition: background .15s; }
.btn:hover { background: var(--blue-press); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.blue { background: var(--blue); border-color: var(--blue); }
.btn.blue:hover { background: var(--blue-press); border-color: var(--blue-press); }
.btn.ghost { background: transparent; color: var(--navy); border-color: var(--line2); }
.btn.ghost:hover { background: var(--soft); }
.err { color: var(--danger); font-size: 14px; margin: 10px 0 0; min-height: 1em; }
.note { font-size: 13px; color: var(--ink3); margin: 16px 0 0; }
.kbd { font-size: 12px; color: var(--ink3); }
.done { text-align: center; padding: 24px 8px; }
.done .tick { width: 56px; height: 56px; margin: 0 auto 16px; display: grid; place-items: center; background: var(--ok-soft); color: var(--ok); font-size: 28px; }
.secure { display: flex; gap: 12px; align-items: flex-start; background: var(--light); border-left: 3px solid var(--navy); padding: 14px 16px; font-size: 14px; color: var(--ink); margin: 0 0 24px; }
.src { border: 1px solid var(--line); background: var(--soft); padding: 18px; margin: 0 0 14px; position: relative; }
.src h3 { font-size: 14px; margin: 0 0 12px; color: var(--navy); letter-spacing: -0.01em; }
.src .rm { position: absolute; top: 12px; right: 12px; background: none; border: 0; color: var(--ink3); cursor: pointer; font-size: 13px; text-decoration: underline; }
.pw { position: relative; }
.pw button { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); background: none; border: 0; color: var(--blue); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; padding: 6px; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
footer { font-size: 12px; color: var(--ink3); text-align: center; padding: 0 0 32px; }
@media (max-width: 640px) {
  h1 { font-size: 26px; } .card { padding: 22px 18px; } .grid2 { grid-template-columns: 1fr; } .top .meta { display: none; }
  .nav { flex-direction: column-reverse; align-items: stretch; } .nav .btn { width: 100%; } .kbd { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }