:root {
  --paper: #F7F4EF;
  --paper-2: #FFFFFF;
  --ink: #1B1A17;
  --ink-soft: #47443E;
  --muted: #837E74;
  --line: #E6DFD3;
  --line-2: #EFEAE0;
  --accent: #0098E0;
  --accent-ink: #0E76A8;
  --accent-soft: #dceffb;
  --control: #3F6F4E;
  --control-soft: #e5eee7;
  --peligro: #A8432B;
  --peligro-soft: #f2e0da;
  --radius: 16px;
  --radius-sm: 11px;
  --shadow: 0 1px 2px rgba(27,26,23,.04), 0 10px 30px rgba(27,26,23,.06);
  --maxw: 1080px;
  --readw: 680px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16150F;
    --paper-2: #1F1D16;
    --ink: #F2EEE4;
    --ink-soft: #C9C3B4;
    --muted: #918B7C;
    --line: #322F26;
    --line-2: #2A281F;
    --accent: #3BB6F0;
    --accent-ink: #7CCDF6;
    --accent-soft: #0f2c3a;
    --control: #86C09A;
    --control-soft: #1e2a22;
    --peligro: #E08A5A;
    --peligro-soft: #33231b;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

em { font-style: italic; }
strong { font-weight: 600; }

/* ---------- Header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(18px, 5vw, 40px);
  background: var(--paper);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  -webkit-backdrop-filter: saturate(1.2) blur(12px);
  backdrop-filter: saturate(1.2) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { text-decoration: none; color: var(--ink); }
.brand-mark { font-family: var(--serif); font-weight: 600; font-size: 22px; letter-spacing: -.01em; }
.brand-mark em { color: var(--accent); font-style: normal; }
.site-nav { display: flex; gap: clamp(10px, 2.4vw, 26px); }
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 2px;
  border-bottom: 1.5px solid transparent;
  transition: color .15s, border-color .15s;
}
.site-nav a:hover { color: var(--accent-ink); border-color: var(--accent); }
@media (max-width: 620px) { .site-nav { display: none; } }

/* ---------- Layout ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 5vw, 40px); }

.hero { padding: clamp(56px, 12vw, 120px) 0 clamp(40px, 8vw, 72px); }
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: clamp(28px, 6vw, 72px); align-items: center; }
.hero-copy { max-width: 640px; }
.hero-cta { margin: 6px 0 26px; }
.btn-buy {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px;
  background: var(--accent-ink); color: #fff; text-decoration: none;
  font-weight: 600; font-size: 15.5px; box-shadow: var(--shadow);
  transition: transform .15s, filter .15s;
}
.btn-buy:hover { transform: translateY(-2px); filter: brightness(1.08); }
.hero-cover { justify-self: center; text-align: center; }
.hero-cover a { display: inline-block; transition: transform .2s; }
.hero-cover a:hover { transform: translateY(-4px) rotate(-1deg); }
.hero-cover img {
  width: min(250px, 62vw); height: auto; display: block;
  border-radius: 8px; border: 1px solid var(--line);
  box-shadow: 0 14px 44px rgba(27,26,23,.20);
}
.hero-cover-cap { display: block; margin-top: 14px; font-size: 13px; color: var(--muted); letter-spacing: .02em; }
@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-cover { justify-self: start; margin-top: 8px; }
}
@media (prefers-color-scheme: dark) {
  .btn-buy { background: var(--accent); color: #0c1116; }
}
.overline {
  font-size: 12.5px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent-ink); margin: 0 0 18px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(38px, 8vw, 68px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 0 0 24px;
}
.hero h1 em { color: var(--accent); font-style: italic; }
.lede { font-size: clamp(17px, 2.4vw, 20px); color: var(--ink-soft); margin: 0 0 32px; line-height: 1.62; }
.hero-tools { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 15px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--paper-2); color: var(--ink); text-decoration: none;
  font-size: 14px; font-weight: 500; box-shadow: var(--shadow);
  transition: transform .15s, border-color .15s, color .15s;
}
.chip:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent-ink); }

/* ---------- Tool sections ---------- */
.tool { padding: clamp(40px, 8vw, 72px) 0; border-top: 1px solid var(--line); }
.tool-head { max-width: var(--readw); margin-bottom: 34px; }
.tool-head h2 {
  font-family: var(--serif); font-weight: 500; font-size: clamp(28px, 5vw, 42px);
  letter-spacing: -.02em; line-height: 1.08; margin: 0 0 12px;
}
.tool-sub { color: var(--ink-soft); margin: 0; font-size: 16.5px; }
.link-btn {
  background: none; border: none; padding: 0; margin-left: 6px;
  color: var(--accent-ink); font: inherit; font-weight: 500; cursor: pointer; text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Gauge (autoengaño) ---------- */
.gauge { margin-bottom: 28px; }
.gauge-track {
  position: relative; height: 56px; border-radius: 999px;
  background: linear-gradient(90deg, var(--control-soft), var(--paper-2) 48%, var(--peligro-soft));
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px; overflow: hidden;
}
.gauge-label { font-family: var(--serif); font-size: 15px; font-weight: 600; letter-spacing: .02em; z-index: 2; }
.gauge-label--l { color: var(--control); }
.gauge-label--r { color: var(--peligro); }
.gauge-thumb {
  position: absolute; top: 50%; left: 50%;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--ink); border: 3px solid var(--paper-2);
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
  transform: translate(-50%, -50%);
  transition: left .55s cubic-bezier(.22,.61,.36,1), background .3s;
  z-index: 3;
}
.gauge-verdict {
  margin-top: 16px; padding: 16px 18px; border-radius: var(--radius-sm);
  background: var(--paper-2); border: 1px solid var(--line); font-size: 16px; color: var(--ink-soft);
  transition: border-color .3s, background .3s;
}
.gauge-verdict strong { color: var(--ink); font-family: var(--serif); font-weight: 600; display: block; margin-bottom: 2px; }
.gauge-verdict.is-control { border-color: var(--control); background: var(--control-soft); }
.gauge-verdict.is-peligro { border-color: var(--peligro); background: var(--peligro-soft); }

.signals { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .signals { grid-template-columns: 1fr; } }
.signal-col { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.signal-col h3 {
  margin: 0 0 14px; font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
}
.signal-col--control h3 { color: var(--control); }
.signal-col--peligro h3 { color: var(--peligro); }
.signal-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }

/* checkbox rows (shared) */
.check {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 11px 10px; border-radius: 10px; cursor: pointer;
  transition: background .12s;
}
.check:hover { background: var(--line-2); }
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check .box {
  flex: none; width: 22px; height: 22px; margin-top: 1px; border-radius: 7px;
  border: 1.8px solid var(--muted); background: var(--paper-2);
  display: grid; place-items: center; transition: all .15s;
}
.check .box::after {
  content: ""; width: 11px; height: 6px; border-left: 2.5px solid #fff; border-bottom: 2.5px solid #fff;
  transform: rotate(-45deg) scale(0); transform-origin: center; transition: transform .15s; margin-top: -2px;
}
.check input:checked + .box { background: var(--accent); border-color: var(--accent); }
.check input:checked + .box::after { transform: rotate(-45deg) scale(1); }
.check .txt { font-size: 15.5px; line-height: 1.45; color: var(--ink); }
.check input:checked ~ .txt { color: var(--muted); }
.check input:focus-visible + .box { outline: 2px solid var(--accent); outline-offset: 2px; }
.signal-col--control .check input:checked + .box { background: var(--control); border-color: var(--control); }

/* ---------- Matriz ---------- */
.matriz-controls { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
.seg { display: inline-flex; align-items: center; gap: 6px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 999px; padding: 6px; box-shadow: var(--shadow); }
.seg-label { font-size: 13px; font-weight: 600; color: var(--muted); padding: 0 8px 0 10px; letter-spacing: .04em; }
.seg button {
  border: none; background: none; padding: 8px 16px; border-radius: 999px;
  font: inherit; font-size: 14px; font-weight: 500; color: var(--ink-soft); cursor: pointer; transition: all .15s;
}
.seg button.is-on { background: var(--ink); color: var(--paper); }

.matriz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.mcell {
  min-height: 92px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--paper-2);
  padding: 16px; display: flex; flex-direction: column; gap: 4px; opacity: .5; transition: all .25s;
}
.mcell .mcell-mark { font-family: var(--serif); font-size: 20px; }
.mcell .mcell-label { font-family: var(--serif); font-weight: 600; font-size: 17px; letter-spacing: -.01em; }
.mcell .mcell-ex { font-size: 13.5px; color: var(--muted); line-height: 1.4; }
.mcell.is-active { opacity: 1; border-color: var(--accent); background: var(--accent-soft); box-shadow: var(--shadow); transform: translateY(-2px); }
.matriz-result {
  padding: 20px 22px; border-radius: var(--radius); background: var(--ink); color: var(--paper);
  font-size: 16.5px; line-height: 1.55;
}
.matriz-result .mr-label { font-family: var(--serif); font-weight: 600; font-size: 20px; display: block; margin-bottom: 4px; }
.matriz-result .mr-ex { color: color-mix(in srgb, var(--paper) 72%, transparent); font-size: 14.5px; margin-top: 8px; }

/* ---------- Prompts ---------- */
.prompt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 760px) { .prompt-grid { grid-template-columns: 1fr; } }
.prompt-card { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.prompt-card .pc-guia { font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 8px; }
.prompt-card h3 { font-family: var(--serif); font-weight: 600; font-size: 21px; margin: 0 0 8px; letter-spacing: -.01em; }
.prompt-card .pc-desc { font-size: 14.5px; color: var(--ink-soft); margin: 0 0 18px; }
.pc-field { margin-bottom: 12px; }
.pc-field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--muted); margin-bottom: 5px; letter-spacing: .02em; }
.pc-field input {
  width: 100%; padding: 10px 13px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--paper); color: var(--ink); font: inherit; font-size: 15px; transition: border-color .15s;
}
.pc-field input:focus { outline: none; border-color: var(--accent); }
.pc-preview {
  background: var(--paper); border: 1px dashed var(--line); border-radius: 10px; padding: 14px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 13px; line-height: 1.55;
  color: var(--ink-soft); white-space: pre-wrap; margin: 6px 0 16px; max-height: 240px; overflow: auto;
}
.pc-preview .slot { color: var(--accent-ink); font-style: italic; }
.pc-copy {
  margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px; border: none; cursor: pointer;
  background: var(--ink); color: var(--paper); font: inherit; font-size: 14.5px; font-weight: 500;
  transition: transform .12s, background .2s;
}
.pc-copy:hover { transform: translateY(-2px); }
.pc-copy.is-done { background: var(--control); }

/* ---------- Accordion ---------- */
.accordion { display: flex; flex-direction: column; gap: 10px; }
.acc-item { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-2); overflow: hidden; }
.acc-head {
  width: 100%; display: flex; align-items: center; gap: 14px; text-align: left;
  padding: 18px 20px; background: none; border: none; cursor: pointer; font: inherit; color: var(--ink);
}
.acc-guia { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); flex: none; width: 62px; }
.acc-title { font-family: var(--serif); font-weight: 600; font-size: 18px; letter-spacing: -.01em; flex: 1; }
.acc-count { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.acc-chev { flex: none; color: var(--muted); transition: transform .25s; }
.acc-item.is-open .acc-chev { transform: rotate(180deg); }
.acc-body { display: none; padding: 4px 12px 14px; }
.acc-item.is-open .acc-body { display: block; }
.acc-body .check .txt { font-size: 15px; }

/* ---------- Footer ---------- */
.site-foot { border-top: 1px solid var(--line); margin-top: 40px; }
.foot-inner { max-width: var(--maxw); margin: 0 auto; padding: 48px clamp(18px, 5vw, 40px) 64px; }
.foot-title { font-family: var(--serif); font-size: 20px; font-weight: 600; margin: 0 0 6px; }
.foot-title em { color: var(--accent); font-style: normal; }
.foot-by { color: var(--ink-soft); margin: 0 0 6px; font-size: 15.5px; }
.foot-by a { color: var(--accent-ink); text-decoration: none; font-weight: 500; border-bottom: 1px solid transparent; }
.foot-by a:hover { border-color: var(--accent); }
.foot-buy { margin: 16px 0 8px; }
.btn-buy--sm { padding: 10px 18px; font-size: 14px; }
.foot-note { color: var(--muted); font-size: 13.5px; margin: 0; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}