/*
Theme Name: SEO Nítido
Theme URI: https://example.com/seonitido
Author: ChatGPT
Author URI: https://openai.com
Description: Theme WordPress clásico, limpio, rápido y orientado a SEO para consultores, agencias y servicios profesionales. Diseño responsive, accesible y sin dependencias externas.
Version: 1.1.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: seonitido
Tags: blog, one-column, two-columns, custom-logo, custom-menu, featured-images, responsive-layout, accessibility-ready
*/

:root {
  --sn-bg: #fbfaf7;
  --sn-bg-alt: #f2efe7;
  --sn-surface: #ffffff;
  --sn-ink: #171717;
  --sn-muted: #5f625f;
  --sn-line: #e6e0d4;
  --sn-brand: #174aff;
  --sn-brand-dark: #0628ae;
  --sn-accent: #c9ff3a;
  --sn-success: #0f766e;
  --sn-radius: 22px;
  --sn-radius-sm: 14px;
  --sn-shadow: 0 24px 70px rgba(23, 23, 23, 0.09);
  --sn-container: 1160px;
  --sn-flow: clamp(1.25rem, 3vw, 2.5rem);
  --sn-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--sn-bg);
  color: var(--sn-ink);
  font-family: var(--sn-font);
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }

input, button, textarea, select { font: inherit; }

button { cursor: pointer; }

a { color: inherit; text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }
a:hover { color: var(--sn-brand); }

p { margin: 0 0 1rem; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.85rem;
  color: var(--sn-ink);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

h1 { font-size: clamp(2.65rem, 8vw, 5.9rem); }
h2 { font-size: clamp(2rem, 5vw, 4rem); }
h3 { font-size: clamp(1.35rem, 3vw, 2rem); }
h4 { font-size: 1.15rem; }

ul, ol { padding-left: 1.2rem; }

::selection { background: var(--sn-accent); color: var(--sn-ink); }

.screen-reader-text,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  z-index: 9999;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0.75rem 1rem;
  clip: auto;
  border-radius: 999px;
  background: var(--sn-ink);
  color: #fff;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--sn-brand) 72%, white);
  outline-offset: 4px;
}

.container,
.site-main > article > .entry-content,
.site-main > article > .entry-header,
.site-main > article > .entry-footer,
.comments-area,
.post-navigation,
.posts-navigation {
  width: min(calc(100% - 2rem), var(--sn-container));
  margin-inline: auto;
}

.narrow { max-width: 780px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(230, 224, 212, 0.78);
  background: color-mix(in srgb, var(--sn-bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.admin-bar .site-header { top: 32px; }

.header-inner {
  width: min(calc(100% - 2rem), var(--sn-container));
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-branding {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  min-width: max-content;
  text-decoration: none;
  font-weight: 850;
  letter-spacing: -0.045em;
}

.site-branding img { max-height: 46px; width: auto; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--sn-ink);
  color: #fff;
  box-shadow: 0 10px 30px rgba(23, 23, 23, 0.16);
}

.brand-text { display: grid; line-height: 1.05; }
.brand-name { font-size: 1.05rem; }
.brand-tagline { color: var(--sn-muted); font-size: 0.76rem; font-weight: 650; letter-spacing: 0; }

.main-navigation { display: flex; align-items: center; gap: 1rem; }

.main-navigation ul {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.main-navigation a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  color: var(--sn-muted);
  font-size: 0.96rem;
  font-weight: 750;
  text-decoration: none;
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
  background: var(--sn-surface);
  color: var(--sn-ink);
  box-shadow: 0 10px 30px rgba(23, 23, 23, 0.05);
}

.header-cta { display: flex; align-items: center; gap: 0.7rem; }

.menu-toggle {
  display: none;
  border: 1px solid var(--sn-line);
  border-radius: 999px;
  background: var(--sn-surface);
  color: var(--sn-ink);
  padding: 0.55rem 0.85rem;
  font-weight: 800;
}

.button,
.wp-block-button__link,
input[type="submit"],
button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.78rem 1.1rem;
  border: 0;
  border-radius: 999px;
  background: var(--sn-ink);
  color: #fff;
  font-weight: 850;
  line-height: 1.1;
  text-decoration: none;
  box-shadow: 0 18px 45px rgba(23, 23, 23, 0.16);
}

.button:hover,
.wp-block-button__link:hover,
input[type="submit"]:hover,
button[type="submit"]:hover {
  transform: translateY(-1px);
  background: var(--sn-brand);
  color: #fff;
}

.button--ghost {
  background: var(--sn-surface);
  color: var(--sn-ink);
  border: 1px solid var(--sn-line);
  box-shadow: none;
}

.button--accent {
  background: var(--sn-accent);
  color: var(--sn-ink);
  box-shadow: 0 18px 45px rgba(145, 179, 19, 0.2);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 9vw, 8rem) 0 clamp(3.5rem, 8vw, 6.5rem);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: auto;
  border-radius: 999px;
  filter: blur(10px);
  opacity: 0.8;
  pointer-events: none;
}

.hero::before {
  width: 38rem;
  height: 38rem;
  right: -19rem;
  top: -18rem;
  background: color-mix(in srgb, var(--sn-accent) 68%, transparent);
}

.hero::after {
  width: 30rem;
  height: 30rem;
  left: -18rem;
  bottom: -18rem;
  background: color-mix(in srgb, var(--sn-brand) 16%, transparent);
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.62fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1.15rem;
  padding: 0.42rem 0.72rem;
  border: 1px solid var(--sn-line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--sn-surface) 84%, transparent);
  color: var(--sn-muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.eyebrow::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--sn-accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--sn-accent) 26%, transparent);
}

.lead {
  max-width: 660px;
  color: var(--sn-muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.78rem; margin-top: 1.7rem; }

.hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0;
  margin: 1.5rem 0 0;
  list-style: none;
}

.hero__proof li {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: var(--sn-surface);
  color: var(--sn-muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.hero-card {
  position: relative;
  border: 1px solid rgba(230, 224, 212, 0.9);
  border-radius: calc(var(--sn-radius) + 10px);
  background: color-mix(in srgb, var(--sn-surface) 84%, transparent);
  box-shadow: var(--sn-shadow);
  overflow: hidden;
}

.hero-card__top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem;
  border-bottom: 1px solid var(--sn-line);
}

.hero-card__pill {
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  background: var(--sn-ink);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 850;
}

.hero-card__body { padding: clamp(1.1rem, 3vw, 1.6rem); }

.score {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.8rem;
  align-items: end;
  margin: 1.1rem 0;
}

.score strong { font-size: clamp(3.5rem, 8vw, 5rem); line-height: 0.9; letter-spacing: -0.08em; }
.score span { color: var(--sn-muted); font-weight: 760; }

.bar-list { display: grid; gap: 0.8rem; margin-top: 1.2rem; }
.bar-list__item span { display: flex; justify-content: space-between; font-size: 0.9rem; font-weight: 800; color: var(--sn-muted); }
.bar { height: 0.7rem; border-radius: 999px; background: var(--sn-bg-alt); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--sn-brand), var(--sn-accent)); }

.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section--tight { padding: clamp(2.5rem, 6vw, 4rem) 0; }
.section--alt { background: var(--sn-bg-alt); }

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(240px, 0.45fr);
  align-items: end;
  gap: 1.4rem;
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
}

.section-header p { color: var(--sn-muted); font-size: 1.05rem; }

.grid { display: grid; gap: 1rem; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  background: var(--sn-surface);
  padding: clamp(1.1rem, 3vw, 1.5rem);
  box-shadow: 0 16px 45px rgba(23, 23, 23, 0.045);
}

.card:hover { transform: translateY(-2px); box-shadow: var(--sn-shadow); }
.card h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }
.card p { color: var(--sn-muted); }
.card__number {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 1.2rem;
  border-radius: 13px;
  background: var(--sn-bg-alt);
  color: var(--sn-brand);
  font-weight: 900;
}

.service-card { min-height: 100%; }
.service-card a { font-weight: 850; text-decoration: none; color: var(--sn-brand); }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  background: var(--sn-line);
}

.metric {
  padding: clamp(1.1rem, 3vw, 1.5rem);
  background: var(--sn-surface);
}

.metric strong { display: block; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 0.95; letter-spacing: -0.06em; }
.metric span { display: block; margin-top: 0.55rem; color: var(--sn-muted); font-weight: 760; }

.process {
  counter-reset: step;
  display: grid;
  gap: 0.9rem;
}

.process__item {
  counter-increment: step;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.2rem;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  background: var(--sn-surface);
}

.process__item::before {
  content: counter(step, decimal-leading-zero);
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: var(--sn-ink);
  color: #fff;
  font-weight: 900;
}

.process__item p { color: var(--sn-muted); margin-bottom: 0; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(320px, 0.55fr);
  gap: clamp(1.2rem, 5vw, 4rem);
  align-items: start;
}

.check-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 1.2rem 0 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  color: var(--sn-muted);
  font-weight: 700;
}

.check-list li::before {
  content: "✓";
  display: inline-grid;
  place-items: center;
  flex: 0 0 1.45rem;
  width: 1.45rem;
  height: 1.45rem;
  border-radius: 50%;
  background: var(--sn-accent);
  color: var(--sn-ink);
  font-size: 0.85rem;
  font-weight: 950;
}

.faq { display: grid; gap: 0.75rem; }
.faq details {
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius-sm);
  background: var(--sn-surface);
  padding: 1rem 1.1rem;
}
.faq summary { cursor: pointer; font-weight: 900; letter-spacing: -0.02em; }
.faq details p { margin-top: 0.75rem; margin-bottom: 0; color: var(--sn-muted); }

.cta-band {
  border-radius: calc(var(--sn-radius) + 12px);
  background: var(--sn-ink);
  color: #fff;
  padding: clamp(1.5rem, 5vw, 3rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.5rem;
  overflow: hidden;
  position: relative;
}

.cta-band::after {
  content: "";
  position: absolute;
  right: -5rem;
  top: -5rem;
  width: 16rem;
  height: 16rem;
  border-radius: 999px;
  background: var(--sn-accent);
  opacity: 0.18;
}

.cta-band h2 { color: #fff; font-size: clamp(1.8rem, 4vw, 3.4rem); }
.cta-band p { max-width: 680px; color: rgba(255,255,255,0.72); }
.cta-band .button { background: #fff; color: var(--sn-ink); box-shadow: none; }

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

.post-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  background: var(--sn-surface);
  text-decoration: none;
  box-shadow: 0 16px 45px rgba(23, 23, 23, 0.045);
}

.post-card:hover { transform: translateY(-2px); color: inherit; box-shadow: var(--sn-shadow); }
.post-card__image { aspect-ratio: 16 / 10; background: var(--sn-bg-alt); overflow: hidden; }
.post-card__image img { width: 100%; height: 100%; object-fit: cover; }
.post-card__content { padding: 1.15rem; display: grid; gap: 0.5rem; }
.post-card__meta { color: var(--sn-muted); font-size: 0.86rem; font-weight: 750; }
.post-card__title { margin: 0; font-size: 1.28rem; line-height: 1.18; }
.post-card__excerpt { color: var(--sn-muted); margin: 0; }

.page-hero {
  padding: clamp(3.2rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 4rem);
  background: linear-gradient(180deg, var(--sn-bg-alt), var(--sn-bg));
}

.entry-header { margin-bottom: 2rem; }
.entry-meta, .entry-footer, .posted-on, .byline { color: var(--sn-muted); font-size: 0.95rem; font-weight: 720; }
.entry-title a { text-decoration: none; }

.entry-content {
  max-width: 790px;
  font-size: 1.08rem;
}

.entry-content > * { margin-top: 0; margin-bottom: 1.2rem; }
.entry-content h2, .entry-content h3, .entry-content h4 { margin-top: 2.2rem; }
.entry-content img { border-radius: var(--sn-radius-sm); }
.entry-content blockquote {
  margin-inline: 0;
  padding: 1.2rem 1.4rem;
  border-left: 5px solid var(--sn-brand);
  border-radius: var(--sn-radius-sm);
  background: var(--sn-bg-alt);
  color: var(--sn-muted);
}
.entry-content table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.entry-content th, .entry-content td { border: 1px solid var(--sn-line); padding: 0.75rem; }
.entry-content pre { overflow-x: auto; padding: 1rem; border-radius: var(--sn-radius-sm); background: #111; color: #fff; }

.alignwide { max-width: var(--sn-container); }
.alignfull { max-width: none; width: 100vw; margin-left: calc(50% - 50vw); }

input[type="text"],
input[type="email"],
input[type="url"],
input[type="search"],
input[type="tel"],
textarea,
select {
  width: 100%;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius-sm);
  background: var(--sn-surface);
  color: var(--sn-ink);
  padding: 0.78rem 0.9rem;
}

label { display: block; margin-bottom: 0.35rem; font-weight: 820; }

.search-form { display: flex; gap: 0.6rem; align-items: center; }
.search-form label { flex: 1; margin: 0; }
.search-form .search-submit { min-width: max-content; }

.site-footer {
  border-top: 1px solid var(--sn-line);
  background: var(--sn-ink);
  color: rgba(255,255,255,0.78);
}

.footer-inner {
  width: min(calc(100% - 2rem), var(--sn-container));
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) repeat(2, minmax(180px, 0.35fr));
  gap: 2rem;
}

.site-footer h2,
.site-footer h3,
.site-footer a { color: #fff; }
.site-footer a { text-decoration: none; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.footer-bottom {
  width: min(calc(100% - 2rem), var(--sn-container));
  margin-inline: auto;
  padding: 1.2rem 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.58);
  font-size: 0.92rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.pagination,
.nav-links { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.page-numbers,
.nav-links a,
.nav-links span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  min-height: 2.4rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--sn-line);
  border-radius: 999px;
  background: var(--sn-surface);
  text-decoration: none;
  font-weight: 780;
}
.page-numbers.current { background: var(--sn-ink); color: #fff; }

.comments-area { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--sn-line); }
.comment-list { padding: 0; list-style: none; }
.comment-body { margin-bottom: 1rem; padding: 1rem; border-radius: var(--sn-radius-sm); background: var(--sn-surface); border: 1px solid var(--sn-line); }

@media (max-width: 980px) {
  .hero__grid,
  .section-header,
  .split,
  .cta-band,
  .footer-inner { grid-template-columns: 1fr; }
  .grid--3, .grid--4, .metrics, .posts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .header-cta .button { display: none; }
  .menu-toggle { display: inline-flex; }
  .main-navigation ul {
    position: absolute;
    inset: 76px 1rem auto 1rem;
    display: none;
    padding: 0.7rem;
    border: 1px solid var(--sn-line);
    border-radius: var(--sn-radius);
    background: var(--sn-surface);
    box-shadow: var(--sn-shadow);
  }
  .nav-open .main-navigation ul { display: grid; align-items: stretch; }
  .main-navigation a { width: 100%; justify-content: space-between; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .admin-bar .site-header { top: 0; }
  .grid--2, .grid--3, .grid--4, .metrics, .posts-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  .header-inner { min-height: 68px; }
  .main-navigation ul { top: 68px; }
  .brand-tagline { display: none; }
  .hero__actions, .search-form { align-items: stretch; flex-direction: column; }
  .button, .wp-block-button__link { width: 100%; }
}

@media (prefers-reduced-motion: no-preference) {
  a, button, .card, .post-card, .button { transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease; }
}


/* Single article layout v1.1: cleaner blog reading experience */
.single-hero {
  padding: clamp(2.8rem, 7vw, 5.5rem) 0 clamp(1.5rem, 4vw, 2.6rem);
  background:
    radial-gradient(circle at 84% 0%, rgba(201, 255, 58, 0.42), transparent 25rem),
    linear-gradient(180deg, var(--sn-bg-alt), var(--sn-bg));
}

.single-hero__inner { max-width: 980px; }
.single-hero__copy { max-width: 860px; }

.single-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
}

.single-kicker a,
.post-categories a {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0.38rem 0.8rem;
  border: 1px solid var(--sn-line);
  border-radius: 999px;
  background: var(--sn-surface);
  color: var(--sn-brand-dark);
  font-size: 0.82rem;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
}

.single-hero .entry-title {
  max-width: 900px;
  margin-bottom: 1rem;
  font-size: clamp(2.25rem, 6vw, 4.9rem);
}

.single-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.single-meta a {
  color: inherit;
  text-decoration: none;
}

.single-excerpt {
  max-width: 740px;
  margin: 1.25rem 0 0;
  color: var(--sn-muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.65;
}

.post-cover-wrap {
  margin-top: clamp(1.25rem, 4vw, 2.5rem);
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.post-cover {
  max-width: 1040px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--sn-line);
  border-radius: calc(var(--sn-radius) + 8px);
  background: var(--sn-bg-alt);
  box-shadow: 0 22px 65px rgba(23, 23, 23, 0.075);
}

.post-cover img {
  width: 100%;
  max-height: 430px;
  object-fit: cover;
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(240px, 310px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.article-main { min-width: 0; }

.article-main .entry-content {
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: clamp(1.1rem, 3vw, 2.4rem);
  border: 1px solid var(--sn-line);
  border-radius: calc(var(--sn-radius) + 8px);
  background: var(--sn-surface);
  box-shadow: 0 16px 55px rgba(23, 23, 23, 0.045);
  font-size: clamp(1.02rem, 1.4vw, 1.12rem);
}

.article-main .entry-content > :first-child { margin-top: 0; }
.article-main .entry-content > :last-child { margin-bottom: 0; }

.article-main .entry-content h2 {
  margin-top: clamp(2.2rem, 5vw, 3.1rem);
  margin-bottom: 0.85rem;
  padding-top: 0.2rem;
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  letter-spacing: -0.045em;
}

.article-main .entry-content h3 {
  margin-top: 1.9rem;
  font-size: clamp(1.28rem, 2vw, 1.65rem);
  letter-spacing: -0.035em;
}

.article-main .entry-content p,
.article-main .entry-content li { color: #2f312f; }

.article-main .entry-content ul,
.article-main .entry-content ol {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1.35rem;
}

.article-main .entry-content li::marker {
  color: var(--sn-brand);
  font-weight: 900;
}

.article-main .entry-content a {
  color: var(--sn-brand-dark);
  font-weight: 800;
}

.article-main .entry-content img {
  width: auto;
  max-height: 520px;
  margin-inline: auto;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
}

.article-main .entry-content figure { margin: 1.8rem 0; }

.article-main .entry-content figcaption {
  margin-top: 0.65rem;
  color: var(--sn-muted);
  font-size: 0.92rem;
  text-align: center;
}

.article-main .entry-content hr {
  height: 1px;
  margin: 2.2rem 0;
  border: 0;
  background: var(--sn-line);
}

.article-sidebar {
  position: sticky;
  top: 6.5rem;
  display: grid;
  gap: 1rem;
}

.article-box {
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius);
  background: var(--sn-surface);
  padding: 1.1rem;
  box-shadow: 0 12px 36px rgba(23, 23, 23, 0.04);
}

.article-box h2 {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.article-box p {
  color: var(--sn-muted);
  font-size: 0.95rem;
}

.article-toc ol {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.93rem;
  line-height: 1.35;
}

.article-toc a {
  color: var(--sn-muted);
  text-decoration: none;
}

.article-toc a:hover { color: var(--sn-brand); }
.article-toc .toc-level-3 { margin-left: 0.8rem; font-size: 0.88rem; }

.button--small {
  min-height: 2.55rem;
  padding: 0.68rem 0.95rem;
  font-size: 0.9rem;
}

.article-footer {
  max-width: 760px;
  margin-top: 1rem;
  margin-inline: 0;
  padding: 1rem 0 0;
}

.post-navigation {
  margin-top: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.post-navigation .nav-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.post-navigation a {
  display: grid;
  gap: 0.25rem;
  min-height: 100%;
  padding: 1rem;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius-sm);
  background: var(--sn-surface);
  text-decoration: none;
}

.nav-subtitle {
  color: var(--sn-muted);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-title {
  color: var(--sn-ink);
  font-weight: 900;
  line-height: 1.25;
}

@media (max-width: 940px) {
  .article-shell { grid-template-columns: 1fr; }
  .article-sidebar {
    position: static;
    order: -1;
  }
  .article-toc ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-left: 1rem;
  }
}

@media (max-width: 640px) {
  .single-hero .entry-title { font-size: clamp(2.05rem, 12vw, 3.2rem); }
  .post-cover { border-radius: var(--sn-radius); }
  .post-cover img { max-height: 260px; }
  .article-main .entry-content {
    padding: 1.05rem;
    border-radius: var(--sn-radius);
  }
  .article-toc ol,
  .post-navigation .nav-links { grid-template-columns: 1fr; }
}