/* tokens.css */
:root {
  color-scheme: light;
  --bg: #e8decc;
  --bg-soft: #ded2bc;
  --surface: #fffdf8;
  --surface-2: #f6eddf;
  --ink: #14202b;
  --ink-soft: #43505d;
  --ink-faint: #5a6673;
  --line: #cfc0a6;
  --line-strong: #ad9876;
  --card-border: #c7b491;
  --navy: #0e2437;
  --navy-2: #163650;
  --cream: #f7f1e4;
  --gold: #a87c30;
  --gold-strong: #8a6524;
  --gold-soft: #c9a45c;
  --gold-wash: rgba(168, 124, 48, 0.14);
  --gold-line: rgba(168, 124, 48, 0.38);
  --ok: #1c6b4a;
  --ok-wash: #e4f1ea;
  --err: #9c2f2f;
  --err-wash: #f8e7e5;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20, 32, 43, 0.08), 0 8px 20px -14px rgba(20, 32, 43, 0.34);
  --shadow-card: 0 2px 3px rgba(20, 32, 43, 0.06), 0 18px 34px -24px rgba(14, 36, 55, 0.5);
  --shadow: 0 24px 48px -26px rgba(14, 36, 55, 0.58);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --header-h: 72px;
  --container: 1140px;
  --prose: 72ch;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #091620;
  --bg-soft: #0c1c27;
  --surface: #101f2c;
  --surface-2: #152a3a;
  --ink: #edf2f6;
  --ink-soft: #b5c1cc;
  --ink-faint: #8393a2;
  --line: #22384a;
  --line-strong: #33506a;
  --card-border: #2a4357;
  --navy: #0a1a26;
  --navy-2: #122c40;
  --cream: #f0e9db;
  --gold: #d7b26c;
  --gold-strong: #e6c988;
  --gold-soft: #b7924c;
  --gold-wash: rgba(215, 178, 108, 0.14);
  --gold-line: rgba(215, 178, 108, 0.34);
  --ok: #6cc29a;
  --ok-wash: rgba(108, 194, 154, 0.12);
  --err: #e79a97;
  --err-wash: rgba(231, 154, 151, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.28), 0 8px 20px -14px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 2px 3px rgba(0, 0, 0, 0.3), 0 18px 34px -24px rgba(0, 0, 0, 0.8);
  --shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.75);
}

/* base.css */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

[hidden] {
  display: none !important;
}

.search-count {
  margin: -0.8rem 0 1.2rem;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.search-count:empty {
  display: none;
}

a {
  color: var(--gold-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ink);
}

[data-theme="dark"] a:hover {
  color: var(--gold);
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

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

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--gold-wash);
}

.container {
  width: min(100% - 3rem, var(--container));
  margin-inline: auto;
}

.visually-hidden {
  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 {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.7rem 1.1rem;
  background: var(--navy);
  color: var(--cream);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
  color: var(--cream);
}

.reading-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: transparent;
  z-index: 60;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold-soft), var(--gold));
  transition: width 80ms linear;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  background: var(--navy);
  border: 1px solid var(--gold-line);
  border-radius: 10px;
  color: var(--gold-soft);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-text small {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 0.3rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.75rem;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.94rem;
  border-radius: 6px;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.25rem;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-account {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.theme-toggle,
.menu-toggle {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  cursor: pointer;
}

.theme-toggle:hover,
.menu-toggle:hover {
  border-color: var(--gold-line);
  color: var(--ink);
}

.theme-toggle .icon-moon,
[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

.menu-toggle {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.78rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease,
    color 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--navy);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--navy-2);
  color: var(--cream);
}

.btn-gold {
  background: var(--gold);
  color: #1b1305;
}

.btn-gold:hover {
  background: var(--gold-strong);
  color: #1b1305;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--gold-line);
  background: var(--gold-wash);
  color: var(--ink);
}

.btn-block {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 78% 20%, var(--gold-wash), transparent 46%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.2rem;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-strong);
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.65rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.hero .lede {
  max-width: 46ch;
  font-family: var(--serif);
  font-size: clamp(1.08rem, 1.6vw, 1.28rem);
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 1.9rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.2rem;
  margin: 2.6rem 0 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--line);
}

.hero-stats div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.hero-stats dt {
  font-family: var(--serif);
  font-size: 1.55rem;
  color: var(--ink);
  line-height: 1;
}

.hero-stats dd {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.hero-card {
  position: relative;
  background: var(--navy);
  color: var(--cream);
  border-radius: var(--radius-lg);
  padding: 1.9rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(201, 164, 92, 0.28);
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(201, 164, 92, 0.18);
  border-radius: calc(var(--radius-lg) - 6px);
  pointer-events: none;
}

.hero-card-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 1rem;
}

.hero-formula {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.3;
  margin: 0 0 1.1rem;
  color: var(--cream);
}

.hero-formula .frac {
  display: inline-flex;
  flex-direction: column;
  vertical-align: middle;
  text-align: center;
  font-size: 0.7em;
  line-height: 1.25;
  margin: 0 0.15em;
}

.hero-formula .frac span:first-child {
  border-bottom: 1px solid rgba(247, 241, 228, 0.55);
  padding: 0 0.2em 0.1em;
}

.hero-formula .frac span:last-child {
  padding: 0.1em 0.2em 0;
}

.hero-card p.hero-card-note {
  color: rgba(247, 241, 228, 0.72);
  font-size: 0.9rem;
  margin: 0;
}

.hero-card-list {
  display: grid;
  gap: 0.55rem;
  margin: 1.3rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid rgba(247, 241, 228, 0.16);
  list-style: none;
  font-size: 0.9rem;
  color: rgba(247, 241, 228, 0.82);
}

.hero-card-list li {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}

.hero-card-list li::before {
  content: "—";
  color: var(--gold-soft);
}

/* Autor */
.hero-author {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.6rem;
  padding: 0.45rem 0.9rem 0.45rem 0.5rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  text-decoration: none;
}

.hero-author:hover {
  border-color: var(--gold-line);
  color: var(--ink);
}

.hero-author img {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 32%;
}

.hero-author span {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.hero-author strong {
  font-size: 0.88rem;
  font-weight: 600;
}

.hero-author small {
  margin-top: 0.18rem;
  font-size: 0.72rem;
  color: var(--ink-faint);
}

.author-section {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.author-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.author-spotlight-media {
  position: relative;
}

.author-portrait {
  width: 100%;
  height: clamp(420px, 46vw, 620px);
  object-fit: cover;
  object-position: center 30%;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.author-spotlight-body h2 {
  margin-bottom: 0.3rem;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
}

.author-role {
  margin: 0 0 1rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.author-spotlight-body > p:not(.author-role, .author-note, .eyebrow) {
  color: var(--ink-soft);
}

.author-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.3rem 0;
  padding: 0;
  list-style: none;
}

.author-credentials li {
  padding: 0.34rem 0.65rem;
  background: var(--gold-wash);
  border: 1px solid var(--gold-line);
  border-radius: 999px;
  font-size: 0.76rem;
  color: var(--ink-soft);
}

.author-note {
  padding-left: 1rem;
  border-left: 2px solid var(--gold-line);
  font-family: var(--serif);
  font-size: 1.02rem;
  font-style: italic;
  color: var(--ink-soft);
}

.author-bio {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 1.6rem;
  align-items: start;
  margin: 2.2rem 0;
  padding: 1.8rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.author-bio-photo {
  width: 120px;
  height: 120px;
  object-fit: cover;
  object-position: center 32%;
  border: 2px solid var(--gold-line);
  border-radius: 50%;
}

.author-bio-body .eyebrow {
  margin-bottom: 0.7rem;
}

.author-bio-body h2 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

.author-bio-body .author-role {
  margin: 0 0 0.8rem;
}

.author-bio-body p {
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.author-bio-body .author-credentials {
  margin: 0.9rem 0;
}

.author-bio-link {
  margin: 0;
}

.author-bio-link .section-link::after {
  content: " →";
}

.author-bio.is-compact {
  grid-template-columns: 96px minmax(0, 1fr);
  padding: 1.4rem;
}

.author-bio.is-compact .author-bio-photo {
  width: 96px;
  height: 96px;
}

/* Perfil completo */
.prose.prose-wide {
  max-width: none;
}

.author-page {
  margin-bottom: 2.4rem;
}

.author-page-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.author-page-photo {
  margin: 0;
}

.author-page-photo img {
  width: 100%;
  height: clamp(360px, 40vw, 540px);
  object-fit: cover;
  object-position: center 30%;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.author-page-photo figcaption {
  margin-top: 0.6rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--ink-faint);
}

.author-page-intro h2 {
  margin-bottom: 0.2rem;
}

.author-kicker {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.author-facts {
  display: grid;
  gap: 0.85rem;
  margin: 1.3rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.author-facts li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 1rem;
  font-size: 0.9rem;
}

.author-facts strong {
  padding-top: 0.12rem;
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.author-facts span {
  color: var(--ink-soft);
}

.prose .media-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  margin: 1.6rem 0 2rem;
  padding: 1.4rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  box-shadow: var(--shadow-card);
}

.prose .media-outlet {
  margin: 0 0 0.35rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.prose .media-feature h3 {
  margin: 0 0 0.4rem;
  font-size: 1.28rem;
  line-height: 1.25;
}

.prose .media-meta {
  margin: 0 0 0.8rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.prose .media-feature-body > p:not(.media-outlet, .media-meta, .media-credit) {
  margin: 0 0 0.9rem;
  font-family: var(--sans);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.prose .media-feature blockquote {
  margin: 0;
  padding: 0.8rem 1rem;
  background: var(--gold-wash);
  border-left: 2px solid var(--gold-line);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.prose .media-feature blockquote p {
  margin: 0;
  font-family: var(--serif);
  font-size: 0.96rem;
  font-style: italic;
  color: var(--ink);
}

.prose .media-credit {
  margin: 0.55rem 0 0;
  font-family: var(--sans);
  font-size: 0.72rem;
  color: var(--ink-faint);
}

.media-link {
  align-self: start;
  white-space: nowrap;
}

/* Sections */
.section {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}

.section + .section {
  padding-top: 0;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin: 0;
}

.section-head p {
  margin: 0;
  max-width: 48ch;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.section-link {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--gold-strong);
  font-weight: 600;
  white-space: nowrap;
}

.section-link::after {
  content: " →";
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
}

.calc-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.calc-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.4rem;
  bottom: 1.4rem;
  width: 2px;
  background: var(--gold);
  opacity: 0.65;
}

.calc-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold-line);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.calc-card .card-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gold-wash);
  color: var(--gold-strong);
}

.calc-card h3 {
  font-size: 1.18rem;
  margin: 0;
}

.calc-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.calc-card .card-more {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-strong);
  font-weight: 600;
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.6rem;
}

.search-field {
  position: relative;
  flex: 1 1 260px;
  max-width: 380px;
}

.search-field svg {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
  pointer-events: none;
}

.search-field input {
  width: 100%;
  padding: 0.68rem 1rem 0.68rem 2.6rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  font-size: 0.92rem;
  box-shadow: var(--shadow-sm);
}

.search-field input:focus {
  border-color: var(--gold-line);
  outline: none;
  box-shadow: 0 0 0 3px var(--gold-wash);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  padding: 0.38rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  cursor: pointer;
  text-decoration: none;
}

.chip:hover {
  border-color: var(--gold-line);
  color: var(--ink);
}

.chip.is-active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--cream);
}

.empty-state {
  padding: 2rem;
  text-align: center;
  color: var(--ink-faint);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
}

/* Lesson cards */
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.1rem;
}

.lesson-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.lesson-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  opacity: 0.9;
}

.lesson-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold-line);
  box-shadow: var(--shadow);
  color: var(--ink);
}

.lesson-card .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.level-badge {
  padding: 0.16rem 0.55rem;
  border: 1px solid var(--gold-line);
  border-radius: 999px;
  color: var(--gold-strong);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.lesson-card h3 {
  font-size: 1.22rem;
  margin: 0;
}

.lesson-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.7rem;
}

.tag {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.tag::before {
  content: "#";
  color: var(--gold);
}

/* Prose */
.prose {
  font-family: var(--serif);
  font-size: 1.09rem;
  line-height: 1.78;
  color: var(--ink);
  max-width: var(--prose);
}

.prose > * + * {
  margin-top: 1.15em;
}

.prose h2 {
  position: relative;
  font-size: 1.65rem;
  margin-top: 2.4em;
  padding-top: 1.1em;
  border-top: 1px solid var(--line);
}

.prose h2::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 52px;
  height: 2px;
  background: var(--gold);
}

.prose h3 {
  font-size: 1.28rem;
  margin-top: 1.9em;
}

.prose h4 {
  font-family: var(--sans);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-strong);
  margin-top: 1.8em;
}

.heading-anchor {
  margin-left: 0.35rem;
  font-size: 0.75em;
  color: var(--gold);
  text-decoration: none;
  opacity: 0;
  transition: opacity 140ms ease;
}

h2:hover .heading-anchor,
h3:hover .heading-anchor,
.heading-anchor:focus-visible {
  opacity: 1;
}

.prose ul,
.prose ol {
  padding-left: 1.3rem;
}

.prose li + li {
  margin-top: 0.4em;
}

.prose li::marker {
  color: var(--gold);
}

.prose strong {
  font-weight: 600;
}

.prose blockquote {
  margin: 1.6em 0;
  padding: 0.4em 0 0.4em 1.3em;
  border-left: 3px solid var(--gold);
  color: var(--ink-soft);
  font-style: italic;
  background: linear-gradient(90deg, var(--gold-wash), transparent 70%);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 0.12em 0.35em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.prose pre {
  overflow-x: auto;
  padding: 1rem 1.2rem;
  background: var(--navy);
  color: var(--cream);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
}

.prose pre code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
}

.prose hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 2.4em 0;
}

.prose .table-wrap {
  overflow-x: auto;
  margin: 1.6em 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.9rem;
}

.prose table.exam-table th,
.prose table.exam-table td {
  white-space: normal;
  vertical-align: top;
  line-height: 1.5;
}

.prose table.exam-table th:nth-child(1),
.prose table.exam-table td:nth-child(1) {
  width: 18%;
}

.prose table.exam-table th:nth-child(3),
.prose table.exam-table td:nth-child(3) {
  width: 26%;
}

.prose thead th {
  background: var(--navy);
  color: var(--cream);
  text-align: left;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.prose th,
.prose td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.prose tbody tr:nth-child(even) {
  background: var(--surface-2);
}

.prose tbody tr:last-child td {
  border-bottom: 0;
}

.prose .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.math-block {
  overflow-x: auto;
  padding: 1rem 1.2rem;
  margin: 1.7em 0;
  background: var(--surface-2);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1.15em;
}

.math-inline {
  font-size: 1.02em;
}

.katex-display {
  margin: 0;
}

.prose .article-image {
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}

.prose .callout {
  padding: 1rem 1.2rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--sans);
  font-size: 0.94rem;
}

.callout-title {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-strong);
  font-weight: 700;
}

/* Article page */
.article-header {
  padding: clamp(2rem, 4vw, 3rem) 0 1.6rem;
  border-bottom: 1px solid var(--line);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin: 0 0 1.3rem;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--line-strong);
}

.breadcrumbs a {
  color: var(--ink-soft);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--gold-strong);
}

.article-header h1 {
  font-size: clamp(2rem, 4.4vw, 3.05rem);
  max-width: 22ch;
  margin-bottom: 0.55rem;
}

.article-header .article-lede {
  max-width: 60ch;
  font-family: var(--serif);
  font-size: 1.16rem;
  color: var(--ink-soft);
  margin: 0 0 1.2rem;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  align-items: center;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.article-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--line-strong);
}

.article-author {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
}

.article-author img {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 32%;
}

.article-author a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.article-author a:hover {
  color: var(--gold-strong);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding: 2.4rem 0 1rem;
}

.article-aside {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: grid;
  gap: 1.4rem;
  font-size: 0.86rem;
}

.aside-card {
  padding: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.aside-card h2 {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-strong);
  margin: 0 0 0.75rem;
}

.toc,
.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc ol {
  padding-left: 0.8rem;
  border-left: 1px solid var(--line);
  margin-left: 0.2rem;
}

.toc a {
  display: block;
  padding: 0.28rem 0;
  color: var(--ink-soft);
  text-decoration: none;
  line-height: 1.4;
}

.toc a:hover,
.toc a.is-current {
  color: var(--gold-strong);
}

.toc .toc-l3 a {
  font-size: 0.95em;
  color: var(--ink-faint);
}

.aside-links {
  display: grid;
  gap: 0.45rem;
}

.aside-links a {
  color: var(--ink-soft);
  text-decoration: none;
}

.aside-links a:hover {
  color: var(--gold-strong);
}

.aside-note {
  margin: 0 0 0.7rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.share-row {
  display: grid;
  gap: 0.5rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 0.7rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--ink-soft);
  cursor: pointer;
}

.share-btn:hover {
  border-color: var(--gold-line);
  color: var(--ink);
}

.article-footer {
  padding: 0 0 3rem;
}

.prev-next {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.prev-next a {
  display: grid;
  gap: 0.25rem;
  padding: 1.1rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.prev-next a:hover {
  border-color: var(--gold-line);
}

.prev-next .dir {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.prev-next .next {
  text-align: right;
}

/* Quiz */
.quiz {
  margin: 3rem 0 0;
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  font-family: var(--sans);
}

.quiz-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 1.2rem;
}

.quiz-head h2 {
  font-size: 1.35rem;
  margin: 0;
}

.quiz-progress {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.quiz-question {
  font-family: var(--serif);
  font-size: 1.12rem;
  margin: 0 0 1rem;
}

.quiz-options {
  display: grid;
  gap: 0.55rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  width: 100%;
  padding: 0.8rem 0.95rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 0.94rem;
  cursor: pointer;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--gold-line);
  background: var(--gold-wash);
}

.quiz-option .letter {
  display: grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.quiz-option[data-state="correct"] {
  border-color: var(--ok);
  background: var(--ok-wash);
}

.quiz-option[data-state="correct"] .letter {
  border-color: var(--ok);
  color: var(--ok);
}

.quiz-option[data-state="wrong"] {
  border-color: var(--err);
  background: var(--err-wash);
}

.quiz-option[data-state="wrong"] .letter {
  border-color: var(--err);
  color: var(--err);
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-feedback {
  display: none;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.55;
}

.quiz-feedback.is-visible {
  display: block;
}

.quiz-feedback[data-tone="ok"] {
  background: var(--ok-wash);
  border: 1px solid color-mix(in srgb, var(--ok) 35%, transparent);
}

.quiz-feedback[data-tone="err"] {
  background: var(--err-wash);
  border: 1px solid color-mix(in srgb, var(--err) 35%, transparent);
}

.quiz-feedback strong {
  display: block;
  margin-bottom: 0.2rem;
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.quiz-status {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.quiz-complete {
  display: none;
  padding: 1.2rem;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  background: var(--gold-wash);
}

.quiz-complete.is-visible {
  display: block;
}

.quiz-complete h3 {
  font-size: 1.2rem;
  margin: 0 0 0.35rem;
}

.quiz-complete p {
  margin: 0 0 1rem;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.quiz-score {
  font-family: var(--serif);
  font-size: 1.9rem;
  color: var(--gold-strong);
  line-height: 1;
}

.quiz-reset {
  background: none;
  border: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--ink-faint);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* CTA */
.cta-band {
  margin: 3rem 0 0;
  padding: clamp(1.8rem, 4vw, 2.8rem);
  background: var(--navy);
  color: var(--cream);
  border-radius: var(--radius-lg);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  border: 1px solid rgba(201, 164, 92, 0.28);
}

.cta-band h2 {
  color: var(--cream);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  margin: 0 0 0.35rem;
}

.cta-band .eyebrow {
  color: var(--gold-soft);
  margin-bottom: 0.8rem;
}

.cta-band .eyebrow::before {
  background: var(--gold-soft);
}

.cta-band p {
  margin: 0;
  color: rgba(247, 241, 228, 0.75);
  max-width: 52ch;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  margin-top: clamp(3rem, 6vw, 5rem);
  background: var(--navy);
  color: rgba(247, 241, 228, 0.72);
  font-size: 0.9rem;
}

[data-theme="dark"] .site-footer {
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding: 3rem 0 2rem;
}

.footer-brand .brand {
  margin: 0 0 0.9rem;
  color: var(--cream);
}

.footer-brand .brand-text small {
  color: rgba(247, 241, 228, 0.55);
}

.footer-author {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 1rem;
  padding: 0.65rem 0.8rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(247, 241, 228, 0.18);
  border-radius: 10px;
  text-decoration: none;
}

.footer-author:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(201, 164, 92, 0.5);
}

.footer-author img {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 32%;
}

.footer-author span {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.footer-author strong {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--cream);
}

.footer-author small {
  margin-top: 0.12rem;
  font-size: 0.7rem;
  color: rgba(247, 241, 228, 0.62);
}

.footer-brand p {
  max-width: 34ch;
  margin: 0;
  font-size: 0.88rem;
  color: rgba(247, 241, 228, 0.62);
}

.footer-col h2 {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 0.8rem;
}

.footer-col ul {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-col a {
  color: rgba(247, 241, 228, 0.78);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--cream);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 2rem;
  padding: 1.2rem 0 2rem;
  border-top: 1px solid rgba(247, 241, 228, 0.14);
  font-size: 0.78rem;
  color: rgba(247, 241, 228, 0.5);
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  color: inherit;
}

.footer-link {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.footer-link:hover {
  color: var(--cream);
}

.legal-controller {
  margin-top: 2.4em;
}

.legal-controller h2 {
  margin-top: 0;
}

/* Newsletter */
.newsletter {
  margin-top: 1.5rem;
  max-width: 36ch;
}

.newsletter h2 {
  margin: 0 0 0.45rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

.newsletter p {
  margin: 0 0 0.7rem;
  color: rgba(247, 241, 228, 0.72);
  font-size: 0.86rem;
}

.newsletter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.newsletter-row input {
  flex: 1 1 12rem;
  min-width: 0;
  padding: 0.62rem 0.8rem;
  border: 1px solid rgba(247, 241, 228, 0.28);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--cream);
}

.newsletter-row input::placeholder {
  color: rgba(247, 241, 228, 0.5);
}

.newsletter-consent {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  margin-top: 0.65rem;
  color: rgba(247, 241, 228, 0.72);
  font-size: 0.78rem;
  line-height: 1.5;
}

.newsletter-consent input {
  margin-top: 0.2rem;
  accent-color: var(--gold);
}

.newsletter .form-error {
  margin: 0.55rem 0 0;
  color: #f3b6b3;
}

.newsletter-status {
  margin: 0.55rem 0 0;
  color: var(--cream);
  font-size: 0.84rem;
}

/* Consentimento de cookies (medição e publicidade) */
.consent-banner {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 90;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 -12px 34px -20px rgba(14, 36, 55, 0.6);
}

.consent-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin-inline: auto;
}

.consent-inner h2 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
}

.consent-inner p {
  max-width: 72ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.consent-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

@media (max-width: 640px) {
  .consent-actions {
    width: 100%;
  }

  .consent-actions .btn {
    flex: 1 1 auto;
  }
}

/* Utility pages */
.page-header {
  padding: clamp(2.5rem, 5vw, 4rem) 0 2rem;
  background: linear-gradient(180deg, var(--bg-soft), transparent);
  border-bottom: 1px solid var(--line);
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 2.9rem);
  margin-bottom: 0.6rem;
}

.page-header p {
  max-width: 62ch;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0;
}

.not-found {
  padding: clamp(4rem, 10vw, 8rem) 0;
  text-align: center;
}

.not-found .code {
  font-family: var(--serif);
  font-size: clamp(4rem, 12vw, 7rem);
  line-height: 1;
  color: var(--gold-soft);
}

/* Responsive */
@media (max-width: 960px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .article-aside {
    position: static;
    grid-row: 1;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-grid;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.6rem 1.5rem 1.2rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .nav-link {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .nav-link::after {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-card {
    max-width: 520px;
  }

  .author-spotlight,
  .author-page-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .author-spotlight-media {
    max-width: 520px;
    margin-inline: auto;
  }

  .author-spotlight-body {
    max-width: 620px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 64px;
  }

  .container {
    width: min(100% - 2rem, var(--container));
  }

  .brand-text small {
    display: none;
  }

  .hero-stats {
    gap: 1.4rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .article-header h1 {
    max-width: none;
  }

  .article-meta .dot {
    display: none;
  }

  .hero-author {
    border-radius: var(--radius);
    max-width: 100%;
  }

  .author-bio,
  .author-bio.is-compact {
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
    padding: 1.2rem;
  }

  .author-bio-photo,
  .author-bio.is-compact .author-bio-photo {
    width: 84px;
    height: 84px;
  }

  .author-spotlight-media {
    padding: 0;
  }

  .author-facts li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }

  .prose .media-feature {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.2rem;
  }

  .media-link {
    justify-self: start;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .article-aside,
  .quiz-section,
  .quiz-cta,
  .prev-next,
  .reading-progress {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .article-layout {
    display: block;
    padding: 0;
  }
}

/* calculators.css */
.calc-page {
  padding: 2.4rem 0 1rem;
}

.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  gap: clamp(1.4rem, 3vw, 2.4rem);
  align-items: start;
}

.calc-panel {
  padding: clamp(1.2rem, 2.6vw, 1.8rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.calc-panel h2 {
  font-size: 1.15rem;
  margin: 0 0 0.3rem;
}

.calc-panel > p {
  margin: 0 0 1.2rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field-full {
  grid-column: 1 / -1;
}

.cf-field {
  margin-top: 1rem;
}

.field > label,
.field-label {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}

.field input,
.field select,
.field textarea,
.cf-input {
  width: 100%;
  padding: 0.62rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.cf-input:focus {
  outline: none;
  border-color: var(--gold-line);
  box-shadow: 0 0 0 3px var(--gold-wash);
}

.field .hint {
  font-size: 0.72rem;
  color: var(--ink-faint);
}

.input-affix {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  overflow: hidden;
}

.input-affix:focus-within {
  border-color: var(--gold-line);
  box-shadow: 0 0 0 3px var(--gold-wash);
}

.input-affix span {
  display: grid;
  place-items: center;
  padding: 0 0.65rem;
  background: var(--surface-2);
  color: var(--ink-faint);
  font-size: 0.82rem;
  border-right: 1px solid var(--line);
}

.input-affix span:last-child {
  border-right: 0;
  border-left: 1px solid var(--line);
}

.input-affix input {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.input-affix input:focus {
  box-shadow: none;
}

.calc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.form-error {
  display: none;
  margin-top: 0.9rem;
  padding: 0.6rem 0.8rem;
  background: var(--err-wash);
  border: 1px solid color-mix(in srgb, var(--err) 35%, transparent);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--err);
}

.form-error.is-visible {
  display: block;
}

.calc-results {
  position: relative;
  padding: clamp(1.2rem, 2.6vw, 1.8rem);
  background: var(--navy);
  color: var(--cream);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(201, 164, 92, 0.28);
  overflow: hidden;
}

.calc-results::after {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid rgba(201, 164, 92, 0.16);
  border-radius: calc(var(--radius-lg) - 5px);
  pointer-events: none;
}

.calc-results h2 {
  position: relative;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 1rem;
}

.result-primary {
  position: relative;
  margin: 0 0 1.2rem;
}

.result-primary .label {
  display: block;
  font-size: 0.8rem;
  color: rgba(247, 241, 228, 0.66);
  margin-bottom: 0.2rem;
}

.result-primary .value {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.1;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.result-rows {
  position: relative;
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 1rem 0 0;
  border-top: 1px solid rgba(247, 241, 228, 0.16);
}

.result-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
}

.result-row dt {
  color: rgba(247, 241, 228, 0.66);
}

.result-row dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  color: var(--cream);
}

.result-note {
  position: relative;
  margin: 1rem 0 0;
  font-size: 0.78rem;
  color: rgba(247, 241, 228, 0.55);
}

.calc-formula {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--ink-soft);
}

.calc-formula .label {
  display: block;
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-strong);
  margin-bottom: 0.3rem;
}

.tabs {
  display: inline-flex;
  padding: 3px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  margin-bottom: 1.2rem;
}

.tab {
  padding: 0.45rem 1rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  font-size: 0.85rem;
  color: var(--ink-soft);
  cursor: pointer;
}

.tab[aria-selected="true"] {
  background: var(--navy);
  color: var(--cream);
}

.tab-panel[hidden] {
  display: none !important;
}

.calc-table-wrap {
  margin-top: 1.4rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  max-height: 420px;
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.calc-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 0.5rem 0.7rem;
  background: var(--navy);
  color: var(--cream);
  text-align: right;
  font-weight: 600;
  white-space: nowrap;
}

.calc-table th:first-child,
.calc-table td:first-child {
  text-align: left;
}

.calc-table td {
  padding: 0.42rem 0.7rem;
  border-bottom: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}

.calc-table tbody tr:nth-child(even) {
  background: var(--surface-2);
}

.calc-table tbody tr:last-child td {
  border-bottom: 0;
  font-weight: 600;
}

.cf-list {
  display: grid;
  gap: 0.5rem;
  margin: 0.6rem 0 0;
}

.cf-row {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr) 2.2rem;
  gap: 0.5rem;
  align-items: center;
}

.cf-period {
  font-size: 0.78rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.cf-remove {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
}

.cf-remove:hover {
  border-color: var(--err);
  color: var(--err);
}

.calc-subactions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.btn-small {
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
}

.calc-explainer {
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.4rem;
  max-width: 980px;
}

.calc-explainer h3 {
  font-size: 1.05rem;
  margin: 0 0 0.3rem;
}

.calc-explainer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.calc-explainer code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--surface-2);
  padding: 0.1em 0.3em;
  border-radius: 4px;
}

@media (max-width: 900px) {
  .calc-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Calculadora HP 12C */
.hp-layout {
  display: grid;
  grid-template-columns: minmax(320px, 520px) minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 2.4rem);
  align-items: start;
}

.hp-machine {
  width: 100%;
  padding: 1.2rem;
  background: #1c2024;
  color: #f4efe5;
  border: 1px solid #4d432f;
  border-radius: 24px;
  box-shadow: 0 24px 50px -24px rgba(14, 36, 55, 0.7);
}

.hp-brand {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  margin-bottom: 0.8rem;
}

.hp-brand span {
  font-family: var(--serif);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hp-brand strong {
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--gold-soft);
}

.hp-brand small {
  margin-left: auto;
  font-family: var(--sans);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(247, 241, 228, 0.55);
}

.hp-display {
  padding: 0.75rem 0.9rem;
  background: #c6d0b9;
  color: #182116;
  border: 1px solid #7f8e72;
  border-radius: 10px;
  box-shadow: inset 0 2px 6px rgba(20, 32, 20, 0.28);
  font-family: var(--mono);
}

.hp-flags {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
  min-height: 1em;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.hp-stack {
  display: flex;
  justify-content: flex-end;
  gap: 0.8rem;
  margin: 0.2rem 0;
  font-size: 0.62rem;
  color: rgba(24, 33, 22, 0.68);
  font-variant-numeric: tabular-nums;
}

.hp-stack b {
  font-weight: 600;
}

.hp-display-value {
  display: block;
  overflow-wrap: anywhere;
  text-align: right;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.hp-keypad {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
}

.hp-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.45rem;
}

.hp-key {
  min-height: 46px;
  padding: 0.35rem 0.25rem;
  border: 1px solid #a99a7f;
  border-radius: 7px;
  background: #f1eadc;
  color: #1b2024;
  box-shadow: 0 2px 0 #9d8d73;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, filter 120ms ease;
}

.hp-key:hover {
  filter: brightness(1.04);
}

.hp-key:active {
  transform: translateY(1px);
  box-shadow: none;
}

.hp-key:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

.hp-key-fin {
  background: #c9a45c;
  border-color: #8a6c30;
  box-shadow: 0 2px 0 #7b5f2a;
}

.hp-key-memory {
  background: #e4dccb;
}

.hp-key-digit {
  background: #fbf7ee;
  font-size: 1rem;
}

.hp-key-op {
  background: #353b40;
  border-color: #22272b;
  color: #f7f1e4;
  box-shadow: 0 2px 0 #14181b;
}

.hp-key-enter {
  background: #c9a45c;
  color: #1b2024;
  font-size: 0.74rem;
}

.hp-key-clear {
  background: #8f3f36;
  border-color: #6f2d27;
  color: #fff;
  box-shadow: 0 2px 0 #5c241f;
  font-size: 0.72rem;
}

.hp-key-stack {
  background: #e4dccb;
  font-size: 0.72rem;
}

.hp-guide {
  display: grid;
  gap: 1rem;
}

.hp-guide-block {
  padding: 1.2rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.hp-guide-block h2 {
  margin: 0 0 0.7rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.hp-steps {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.hp-example {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.hp-registers {
  display: grid;
  gap: 0.45rem;
  margin: 0;
}

.hp-registers div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.84rem;
}

.hp-registers div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.hp-registers dt {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--gold-strong);
}

.hp-registers dd {
  margin: 0;
  text-align: right;
  color: var(--ink-soft);
}

.hp-registers b {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.hp-mode {
  margin: 0.8rem 0 0.5rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.hp-hint {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.hp-memory-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.35rem;
}

.hp-memory-grid span {
  display: grid;
  gap: 0.15rem;
  padding: 0.35rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  text-align: center;
  font-size: 0.68rem;
  color: var(--ink-faint);
}

.hp-memory-grid b {
  overflow-wrap: anywhere;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink);
}

.hp-note {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--ink-faint);
}

.hp-guide kbd,
.hp-example kbd,
.hp-note kbd,
.hp-hint kbd {
  padding: 0.05em 0.3em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--ink);
}

.hp-guide .form-error {
  margin: 0;
}

@media (max-width: 900px) {
  .hp-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hp-machine {
    max-width: 520px;
    margin-inline: auto;
  }
}

@media (max-width: 480px) {
  .hp-machine {
    padding: 0.8rem;
  }

  .hp-keypad,
  .hp-row {
    gap: 0.35rem;
  }

  .hp-key {
    min-height: 42px;
    font-size: 0.76rem;
  }
}

/* quiz.css */
/* Quiz público dos artigos */
.quiz-section {
  margin-top: 2.5rem;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.quiz-inner {
  padding: clamp(1.25rem, 3vw, 2.4rem);
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.quiz-head {
  margin-bottom: 1.6rem;
}

.quiz-head h2 {
  margin: 0 0 0.4rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
  color: var(--ink);
}

.quiz-head p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.quiz-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.quiz-question {
  padding: 1.3rem 0;
  border-top: 1px solid var(--line);
}

.quiz-question:first-child {
  border-top: 0;
  padding-top: 0;
}

.quiz-question fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.quiz-question fieldset.is-missing {
  outline: 2px dashed var(--err);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.quiz-question legend {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  margin-bottom: 0.85rem;
  padding: 0;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}

.quiz-number {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  margin-top: 0.05rem;
  border-radius: 50%;
  background: var(--gold-wash);
  border: 1px solid var(--gold-line);
  color: var(--gold-strong);
  font-size: 0.8rem;
  font-weight: 700;
}

.quiz-options {
  display: grid;
  gap: 0.5rem;
  margin-left: 2.35rem;
}

.quiz-option {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.quiz-option:hover {
  border-color: var(--gold-line);
  background: var(--gold-wash);
  color: var(--ink);
}

.quiz-option input {
  margin: 0.2rem 0 0;
  flex: 0 0 auto;
  accent-color: var(--gold);
}

.quiz-option:has(input:checked) {
  border-color: var(--gold);
  background: var(--gold-wash);
  color: var(--ink);
}

.quiz-option:has(input:focus-visible) {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.quiz-option.is-answer {
  border-color: var(--ok);
  background: var(--ok-wash);
  color: var(--ink);
}

.quiz-option.is-chosen:not(.is-answer) {
  border-color: var(--err);
  background: var(--err-wash);
  color: var(--ink);
}

.quiz-feedback {
  margin: 0.85rem 0 0 2.35rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--ink-soft);
  font-size: 0.93rem;
  line-height: 1.55;
}

.quiz-question.is-correct .quiz-feedback {
  background: var(--ok-wash);
  color: var(--ink);
  border-left: 3px solid var(--ok);
}

.quiz-question.is-incorrect .quiz-feedback {
  background: var(--err-wash);
  color: var(--ink);
  border-left: 3px solid var(--err);
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.quiz-score {
  margin: 0;
  font-weight: 600;
  color: var(--ink);
}

.quiz-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.6rem;
  padding: 1.3rem 1.5rem;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  background: var(--gold-wash);
}

.quiz-cta[hidden] {
  display: none;
}

.quiz-cta h3 {
  margin: 0 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--ink);
}

.quiz-cta p {
  margin: 0;
  max-width: 58ch;
  color: var(--ink-soft);
}

.quiz-cta .eyebrow {
  margin-bottom: 0.5rem;
}

.quiz-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

@media (max-width: 640px) {
  .quiz-options {
    margin-left: 0;
  }

  .quiz-feedback {
    margin-left: 0;
  }

  .quiz-cta-actions,
  .quiz-cta-actions .btn {
    width: 100%;
  }
}

/* questoes.css */
/* Banco de questões */

.qbank-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.8rem;
  margin-top: 1.4rem;
}

.qbank-stats div {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.qbank-stats strong {
  font-family: var(--serif);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ink);
}

.qbank-stats span {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.qbank-layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: 1.6rem;
  align-items: start;
}

.qbank-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.qbank-filters {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.1rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.qbank-filters h2 {
  margin: 0 0 0.2rem;
  font-size: 1rem;
}

.qbank-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.qbank-field select,
.qbank-search input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  font-size: 0.9rem;
}

.qbank-field select:focus,
.qbank-search input:focus {
  border-color: var(--gold-line);
  outline: none;
  box-shadow: 0 0 0 3px var(--gold-wash);
}

.qbank-search {
  position: relative;
  display: block;
}

.qbank-search svg {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
  pointer-events: none;
}

.qbank-search input {
  padding-left: 2.2rem;
  border-radius: 999px;
}

.qbank-clear {
  width: 100%;
  margin-top: 0.15rem;
}

.qbank-counter {
  margin: 0;
  padding-left: 0.2rem;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.qbank-results {
  min-width: 0;
}

.qbank-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.qcard {
  padding: 1.35rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.qcard[hidden] {
  display: none;
}

.qcard-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.qcard-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.qbadge {
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold-strong);
  background: var(--gold-wash);
  border: 1px solid var(--gold-line);
  border-radius: 6px;
}

.qbadge:first-child {
  color: var(--cream);
  background: var(--navy);
  border-color: var(--navy);
}

.qcard-permalink {
  color: var(--ink-faint);
  font-weight: 700;
  text-decoration: none;
}

.qcard-permalink:hover {
  color: var(--gold-strong);
}

.qcard-topic {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 0.85rem 0 0.4rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.qcard-level {
  padding: 0.12rem 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.qcard-statement {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.65;
}

.qcard-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.qoption {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  width: 100%;
  padding: 0.7rem 0.85rem;
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.45;
  text-align: left;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease;
}

.qoption:hover:not(:disabled) {
  background: var(--gold-wash);
  border-color: var(--gold-line);
}

.qoption:disabled {
  opacity: 1;
  cursor: default;
}

.qoption-letter {
  display: grid;
  place-items: center;
  flex: 0 0 1.6rem;
  width: 1.6rem;
  height: 1.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.qoption.is-correct {
  background: var(--ok-wash);
  border-color: var(--ok);
}

.qoption.is-correct .qoption-letter {
  color: #fff;
  background: var(--ok);
  border-color: var(--ok);
}

.qoption.is-wrong {
  background: var(--err-wash);
  border-color: var(--err);
}

.qoption.is-wrong .qoption-letter {
  color: #fff;
  background: var(--err);
  border-color: var(--err);
}

.qcard-feedback {
  margin: 0.9rem 0 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.qcard-feedback.is-ok {
  color: var(--ok);
}

.qcard-feedback.is-err {
  color: var(--err);
}

.qcard-comment {
  margin-top: 0.9rem;
  padding: 0.9rem 1rem;
  background: var(--surface-2);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.qcard-comment h3 {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-strong);
}

.qcard-comment p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.qcard-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 0.8rem;
  font-size: 0.78rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
}

.qcard-foot a {
  color: var(--gold-strong);
}

.qcard-reset {
  padding: 0;
  font: inherit;
  font-size: 0.78rem;
  color: var(--ink-faint);
  background: none;
  border: 0;
  text-decoration: underline;
  cursor: pointer;
}

.qcard-reset:hover {
  color: var(--ink);
}

.qbank-single {
  max-width: 820px;
}

.qbank-single .qcard {
  padding: 1.6rem;
}

.qbank-related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

@media (max-width: 860px) {
  .qbank-layout {
    grid-template-columns: 1fr;
  }

  .qbank-sidebar {
    position: static;
  }

  .qbank-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .qbank-filters h2,
  .qbank-field-search,
  .qbank-clear {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .qbank-filters {
    grid-template-columns: 1fr;
  }

  .qcard {
    padding: 1.1rem;
  }

  .qcard-foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

/* auth.css */
/* Contas e quiz premium */
.auth-page {
  display: flex;
  justify-content: center;
  padding: clamp(2rem, 6vw, 4.5rem) 1.5rem;
}

.auth-card,
.account-card {
  width: min(100%, 460px);
  padding: clamp(1.5rem, 4vw, 2.4rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.auth-page-wide .account-card {
  width: min(100%, 780px);
}

.auth-card h1,
.account-header h1 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  color: var(--ink);
  overflow-wrap: anywhere;
}

.auth-lede {
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.auth-form .field > label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}

.auth-password {
  position: relative;
}

.auth-password input {
  padding-right: 5.6rem;
}

.auth-password-toggle {
  position: absolute;
  top: 50%;
  right: 0.5rem;
  transform: translateY(-50%);
  padding: 0.3rem 0.45rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--gold-strong);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.auth-password-toggle:hover {
  background: var(--gold-wash);
}

.auth-check {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

.auth-check input {
  margin-top: 0.25rem;
  accent-color: var(--gold);
}

.auth-check a,
.auth-legal a,
.auth-switch a {
  color: var(--gold-strong);
}

.auth-switch {
  margin: 1.3rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.auth-legal {
  margin: 0.8rem 0 0;
  color: var(--ink-faint);
  font-size: 0.8rem;
  line-height: 1.55;
}

.auth-alert {
  margin-bottom: 1.2rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.5;
}

.auth-alert[hidden] {
  display: none;
}

.auth-alert.is-error {
  border-color: color-mix(in srgb, var(--err) 40%, transparent);
  background: var(--err-wash);
}

.auth-alert.is-success {
  border-color: color-mix(in srgb, var(--ok) 40%, transparent);
  background: var(--ok-wash);
}

.account-header {
  padding-bottom: 1.3rem;
  margin-bottom: 1.3rem;
  border-bottom: 1px solid var(--line);
}

.account-header p:last-child {
  margin: 0;
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.account-section h2,
.account-danger h2 {
  margin: 0 0 0.7rem;
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--ink);
}

.account-results > p {
  margin: 0;
  color: var(--ink-soft);
}

.account-attempts {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.account-attempts li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.9rem;
  align-items: center;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.account-attempts a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.account-attempts a:hover {
  color: var(--gold-strong);
}

.account-attempt-score {
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--gold-wash);
  color: var(--gold-strong);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.account-attempts time {
  color: var(--ink-faint);
  font-size: 0.8rem;
  white-space: nowrap;
}

.account-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.account-danger {
  margin-top: 2rem;
  padding: 1.2rem;
  border: 1px solid color-mix(in srgb, var(--err) 32%, transparent);
  border-radius: var(--radius);
  background: var(--err-wash);
}

.account-danger p {
  margin: 0 0 0.9rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.btn-danger {
  background: transparent;
  border-color: var(--err);
  color: var(--err);
}

.btn-danger:hover {
  background: var(--err);
  color: var(--surface);
}

.premium-wrap {
  max-width: 820px;
}

.premium-gate,
.premium-form {
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.premium-gate {
  border-color: var(--gold-line);
  background: var(--gold-wash);
}

.premium-gate h2 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--ink);
}

.premium-gate p {
  margin: 0 0 1.2rem;
  max-width: 60ch;
  color: var(--ink-soft);
}

.premium-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.premium-status {
  margin: 0 0 1.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--ink-soft);
}

.premium-status[hidden] {
  display: none;
}

.premium-form .quiz-head {
  margin-bottom: 0.5rem;
}

.premium-result {
  margin-top: 1.5rem;
  padding: 1.3rem 1.5rem;
  border: 1px solid color-mix(in srgb, var(--ok) 40%, transparent);
  border-radius: var(--radius);
  background: var(--ok-wash);
}

.premium-result h2 {
  margin: 0 0 0.4rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--ink);
}

.premium-result p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

.premium-back {
  margin: 1.8rem 0 0;
}

.premium-back a {
  color: var(--gold-strong);
  font-weight: 600;
}

/* Dashboard de progresso */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.7rem;
}

.dashboard-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.dashboard-stat-label {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}

.dashboard-stat-value {
  font-family: var(--serif);
  font-size: 1.55rem;
  line-height: 1.1;
  color: var(--ink);
}

.dashboard-stat-hint {
  color: var(--ink-faint);
  font-size: 0.78rem;
}

.dashboard-empty {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.dashboard-progress {
  margin-top: 1rem;
}

.dashboard-progress-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.4rem;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.dashboard-progress-head strong {
  color: var(--ink);
}

.dashboard-bar {
  height: 0.5rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  overflow: hidden;
}

.dashboard-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--gold), var(--gold-strong));
  transition: width 0.4s ease;
}

.dashboard-lessons {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dashboard-lesson {
  display: grid;
  gap: 0.55rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.dashboard-lesson-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.dashboard-lesson-title {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.dashboard-lesson-title:hover {
  color: var(--gold-strong);
}

.dashboard-badge {
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  background: var(--surface-2);
  color: var(--ink-soft);
  white-space: nowrap;
}

.dashboard-lesson.is-done .dashboard-badge {
  background: var(--ok-wash);
  color: var(--ok);
}

.dashboard-lesson.is-progress .dashboard-badge {
  background: var(--gold-wash);
  color: var(--gold-strong);
}

.dashboard-lesson.is-done .dashboard-bar span {
  background: var(--ok);
}

.dashboard-lesson.is-empty .dashboard-bar span {
  background: transparent;
}

.dashboard-lesson-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.45;
}

.dashboard-lesson-cta {
  justify-self: start;
  color: var(--gold-strong);
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
}

.dashboard-lesson-cta:hover {
  text-decoration: underline;
}

@media (max-width: 620px) {
  .account-attempts li {
    grid-template-columns: 1fr auto;
  }

  .account-attempts time {
    grid-column: 1 / -1;
  }

  .dashboard-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .premium-actions .btn {
    width: 100%;
  }
}