:root {
  --bg: #f7f9f8;
  --surface: #ffffff;
  --ink: #17211f;
  --muted: #5c6b66;
  --line: #dbe3df;
  --green: #2d6f5b;
  --green-dark: #1f4d40;
  --blue: #cfe5f1;
  --amber: #d68a2f;
  --asphalt: #303836;
  --shadow: 0 18px 45px rgba(24, 34, 31, 0.12);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

a {
  color: inherit;
}

img,
svg {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(247, 249, 248, 0.92);
  border-bottom: 1px solid rgba(219, 227, 223, 0.86);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #ffffff;
  background: var(--green);
  border-radius: 8px;
}

.brand-mark svg {
  width: 24px;
  fill: currentColor;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--green-dark);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  padding: clamp(54px, 8vw, 112px) clamp(20px, 5vw, 72px) clamp(44px, 6vw, 72px);
}

.hero-copy {
  max-width: 680px;
  min-width: 0;
}

.hero-kicker {
  margin: 0 0 14px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 660px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero p {
  margin: 24px 0 0;
  max-width: 570px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--green);
  color: #ffffff;
}

.button.secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--green-dark);
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 40px 0 0;
  max-width: 560px;
}

.signal-list div {
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.signal-list dt {
  font-size: 22px;
  font-weight: 850;
}

.signal-list dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.hero-media {
  margin: 0;
  overflow: hidden;
  width: 100%;
  min-width: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--blue);
  aspect-ratio: 16 / 11;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

section {
  padding: 76px clamp(20px, 5vw, 72px);
}

.problem-rail {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(260px, 0.55fr);
  gap: 24px;
  align-items: end;
  max-width: 1180px;
  margin: 0 auto 30px;
}

.section-heading > *,
.calculator-section > *,
.kit-section > *,
.topic-grid > *,
.article-columns > *,
.timeline > * {
  min-width: 0;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.02;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.section-heading p,
.calculator-copy p,
.kit-copy p,
.roadmap p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
}

.topic-grid-6 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.topic-grid-6 .topic-card {
  min-height: 240px;
}

.topic-card {
  display: flex;
  min-height: 280px;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfb;
}

.icon-box {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--green-dark);
  background: #e8f0ec;
  border-radius: 8px;
}

.icon-box svg {
  width: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.topic-card h3,
.kit-panel h3,
.article-columns h3,
.timeline h3 {
  margin: 18px 0 0;
  font-size: 19px;
  line-height: 1.15;
}

.topic-card p {
  margin: 12px 0 20px;
  color: var(--muted);
  line-height: 1.55;
}

.topic-card a {
  margin-top: auto;
  color: var(--green-dark);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.calculator-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.72fr);
  gap: clamp(30px, 6vw, 96px);
  align-items: start;
  max-width: 1280px;
  margin: 0 auto;
}

.calculator-copy h2 {
  margin-bottom: 18px;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding-left: 28px;
  color: var(--asphalt);
  line-height: 1.5;
  position: relative;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--green);
  content: "✓";
  font-weight: 900;
}

.calculator {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 14px;
  align-items: center;
}

.field-row label {
  color: var(--asphalt);
  font-size: 14px;
  font-weight: 800;
}

.input-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.input-wrap input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
}

.input-wrap span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.result-panel {
  display: grid;
  gap: 8px;
  margin-top: 8px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--green-dark);
  color: #ffffff;
}

.result-label {
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-panel strong {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
}

.result-panel span:last-child {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.45;
}

.kit-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(300px, 0.62fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: center;
  background: #e7f1ed;
}

.kit-copy,
.kit-panel {
  max-width: 620px;
}

.kit-copy h2 {
  margin-bottom: 18px;
}

.kit-panel {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}

.kit-panel h3 {
  margin-top: 0;
}

.kit-price {
  margin-top: 16px;
  color: var(--asphalt);
  font-size: 15px;
}

.kit-price strong {
  color: var(--green-dark);
  font-size: 20px;
}

.kit-panel ol {
  display: grid;
  gap: 10px;
  margin: 18px 0 24px;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.5;
}

.article-section {
  background: var(--surface);
}

.article-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
}

.article-columns > div {
  padding: 22px 0 0;
  border-top: 2px solid var(--line);
}

.article-columns h3 {
  margin-top: 0;
}

.article-columns ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  color: var(--muted);
  line-height: 1.45;
  list-style-position: inside;
}

.notice-inline {
  margin: 24px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: #fdf4e7;
  color: var(--asphalt);
  font-size: 14px;
  line-height: 1.55;
}

.notice-section {
  max-width: 1180px;
  margin: 0 auto;
}

.notice-section h2 {
  margin-bottom: 26px;
  font-size: clamp(24px, 3vw, 34px);
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.notice-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius);
  background: var(--surface);
}

.notice-card h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.notice-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.roadmap {
  max-width: 1280px;
  margin: 0 auto;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.timeline article {
  padding: 22px;
  border-left: 4px solid var(--amber);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.timeline span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #ffffff;
  background: var(--asphalt);
  border-radius: 50%;
  font-weight: 900;
}

/* --- Paginas de articulo --- */

.post-wrap {
  padding: clamp(36px, 6vw, 64px) clamp(20px, 5vw, 72px);
}

.post {
  max-width: 760px;
  margin: 0 auto;
}

.breadcrumb {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: none;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  text-decoration: underline;
}

.post-tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: #e8f0ec;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.post h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4.5vw, 44px);
  line-height: 1.08;
}

.post-meta {
  margin: 0 0 32px;
  padding-bottom: 22px;
  border-bottom: 2px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.post h2 {
  margin: 40px 0 14px;
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.15;
}

.post p {
  margin: 0 0 18px;
  color: var(--asphalt);
  font-size: 17px;
  line-height: 1.65;
}

.post ul,
.post ol {
  margin: 0 0 20px;
  padding-left: 24px;
  color: var(--asphalt);
  font-size: 17px;
  line-height: 1.6;
  display: grid;
  gap: 10px;
}

.post a {
  color: var(--green-dark);
  font-weight: 700;
}

.post table {
  width: 100%;
  margin: 0 0 22px;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.45;
}

.post table th,
.post table td {
  padding: 10px 12px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.post table th {
  background: #e8f0ec;
  color: var(--green-dark);
  font-weight: 800;
}

.post table tr:nth-child(even) td {
  background: #fbfcfb;
}

.post .notice-inline {
  margin: 30px 0;
}

.cta-box {
  margin: 42px 0;
  padding: 26px;
  border-radius: var(--radius);
  background: var(--green-dark);
  color: #ffffff;
}

.cta-box h2 {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: 22px;
}

.cta-box p {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  line-height: 1.55;
}

.cta-box .button.primary {
  background: var(--amber);
  color: #1d1508;
}

.related {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 2px solid var(--line);
}

.related h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

.related ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.related a {
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: none;
}

.related a:hover,
.related a:focus-visible {
  text-decoration: underline;
}

/* Enlaces dentro de la home */

.signal-list a,
.article-columns a {
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: none;
}

.signal-list a:hover,
.article-columns a:hover,
.signal-list a:focus-visible,
.article-columns a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .post table {
    display: block;
    overflow-x: auto;
  }
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 22px;
  align-items: center;
  justify-content: space-between;
  padding: 28px clamp(20px, 5vw, 72px);
  color: #dbe3df;
  background: var(--asphalt);
}

.site-footer p {
  max-width: 760px;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

.site-footer a {
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 980px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .calculator-section,
  .kit-section,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-media {
    aspect-ratio: 16 / 10;
  }

  .topic-grid,
  .topic-grid-6,
  .article-columns,
  .timeline,
  .notice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 38px;
  }

  .signal-list,
  .topic-grid,
  .topic-grid-6,
  .article-columns,
  .timeline,
  .notice-grid {
    grid-template-columns: 1fr;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .hero-actions .button {
    width: 100%;
  }

  section {
    padding: 56px 20px;
  }
}