/* ===========================================
   GLOBAL DESIGN TOKENS – Jambrs
   Light theme (base) — dark theme overrides
   live at the bottom of this file.
   =========================================== */

:root {
  color-scheme: light;

  /* Primary Palette — deep indigo / electric blue */
  --color-primary-50: #eef1ff;
  --color-primary-100: #e2e6ff;
  --color-primary-200: #c7cdff;
  --color-primary-300: #a3aafd;
  --color-primary-400: #7c82fa;
  --color-primary-500: #5b5cf5;
  --color-primary-600: #4640e6;
  --color-primary-700: #3831bd;
  --color-primary-800: #2c2795;
  --color-primary-900: #201d6e;

  /* Neutral Palette */
  --color-neutral-50: #f8f8fc;
  --color-neutral-100: #f0f1f8;
  --color-neutral-200: #e1e2f0;
  --color-neutral-300: #c7c9e0;
  --color-neutral-400: #9a9cbd;
  --color-neutral-500: #6f7093;
  --color-neutral-600: #4f5077;
  --color-neutral-700: #363758;
  --color-neutral-800: #201f3d;
  --color-neutral-900: #131226;

  /* Accent — warm amber (counterpoint to indigo) */
  --color-accent: #ff8a3d;
  --color-accent-hover: #f2650a;
  --color-accent-soft: #ffe4cc;

  /* Secondary accent — teal (variety for icon fills) */
  --color-teal: #14b8a6;

  /* Semantic */
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #f43f5e;
  --color-info: #06b6d4;

  /* Surfaces */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f6f6fc;
  --color-bg-tertiary: #ebecf7;

  /* Text */
  --color-text-primary: #15142c;
  --color-text-secondary: #52537a;
  --color-text-muted: #8c8dae;
  --color-text-inverse: #ffffff;

  /* Borders */
  --color-border-light: #e7e8f5;
  --color-border: #d2d4ea;
  --color-border-dark: #a3a5cf;

  /* Shadows — tinted with primary for an ambient, premium glow */
  --shadow-sm: 0 1px 3px rgba(24, 22, 75, 0.06);
  --shadow-md: 0 10px 24px -6px rgba(24, 22, 75, 0.14);
  --shadow-lg: 0 22px 48px -12px rgba(24, 22, 75, 0.18);
  --shadow-xl: 0 32px 70px -16px rgba(24, 22, 75, 0.24);
  --shadow-glow:
    0 0 0 1px rgba(91, 92, 245, 0.08), 0 20px 45px -14px rgba(91, 92, 245, 0.38);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 450ms cubic-bezier(0.16, 0.84, 0.44, 1);
}

/* ===========================================
   PAGE TOKENS – Type / Spacing / Radius / Layout
   =========================================== */
:root {
  --font-base: "vazir", system-ui, -apple-system, "Segoe UI", sans-serif;

  --container-max: 1200px;
  --sidebar-width: 268px;

  --space-3xs: 4px;
  --space-2xs: 8px;
  --space-xs: 12px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 36px;
  --space-xl: 56px;
  --space-2xl: 88px;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;

  --fs-hero: clamp(2.1rem, 1.15rem + 3.3vw, 3.35rem);
  --fs-h2: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  --fs-h3: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
  --fs-body: 1rem;
  --fs-sm: 0.9rem;
  --fs-xs: 0.78rem;
}

/* ===========================================
   RESET & BASE
   =========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  line-height: 1.85;
  font-size: var(--fs-body);
  -webkit-font-smoothing: antialiased;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

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

.img-placeholder > img {
  display: none;
}

.img-placeholder > img[src]:not([src=""]) {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  border-radius: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3 {
  font-weight: 800;
  line-height: 1.35;
  color: var(--color-text-primary);
}

p {
  color: var(--color-text-secondary);
}

svg {
  flex-shrink: 0;
}

.icon {
  width: 1em;
  height: 1em;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

:focus-visible {
  outline: 2px solid var(--color-primary-600);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  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: fixed;
  inset-inline-start: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-700);
  color: var(--color-text-inverse);
  font-weight: 700;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* ===========================================
   LAYOUT HELPERS
   =========================================== */
.wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--space-md);
}

.page-body {
  padding-block: var(--space-lg) var(--space-2xl);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-primary-700);
  background: linear-gradient(
    135deg,
    rgba(91, 92, 245, 0.1),
    rgba(255, 138, 61, 0.12)
  );
  border: 1px solid rgba(91, 92, 245, 0.22);
  padding: 6px 14px 6px 12px;
  border-radius: var(--radius-full);
  transition:
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.22);
  flex-shrink: 0;
}

/* ===========================================
   HERO
   =========================================== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    175deg,
    var(--color-primary-50) 0%,
    var(--color-bg-primary) 62%
  );
  border-bottom: 1px solid var(--color-border-light);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

/* Soft aurora glow — replaces the previous grid/checker pattern */
.hero-aurora {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}

.aurora-blob--a {
  width: 30vw;
  min-width: 320px;
  max-width: 480px;
  aspect-ratio: 1;
  background: var(--color-primary-400);
  opacity: 0.42;
  top: -12%;
  inset-inline-end: -8%;
  animation: aurora-float-a 18s ease-in-out infinite;
}

.aurora-blob--b {
  width: 24vw;
  min-width: 260px;
  max-width: 380px;
  aspect-ratio: 1;
  background: var(--color-accent);
  opacity: 0.28;
  bottom: -14%;
  inset-inline-start: -6%;
  animation: aurora-float-b 22s ease-in-out infinite;
}

.aurora-blob--c {
  width: 18vw;
  min-width: 200px;
  max-width: 300px;
  aspect-ratio: 1;
  background: var(--color-teal);
  opacity: 0.22;
  top: 38%;
  inset-inline-start: 40%;
  animation: aurora-float-c 26s ease-in-out infinite;
}

@keyframes aurora-float-a {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-4%, 6%);
  }
}

@keyframes aurora-float-b {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(5%, -6%);
  }
}

@keyframes aurora-float-c {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-3%, -4%) scale(1.08);
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  /* make the visual column larger so hero image appears bigger */
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-2xl);
  align-items: center;
  padding-block: var(--space-2xl);
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 800;
  margin-block: var(--space-sm) var(--space-md);
  letter-spacing: -0.01em;
}

.text-accent-gradient {
  background: linear-gradient(
    100deg,
    var(--color-primary-600),
    var(--color-primary-400) 55%,
    var(--color-teal)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 1.08rem;
  max-width: 46ch;
  margin-bottom: var(--space-lg);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  padding: 7px 16px 7px 8px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition:
    background var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-fast);
}

.meta-item:hover {
  transform: translateY(-2px);
}

.meta-item .icon {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  font-size: 1em;
  width: 1.7em;
  height: 1.7em;
  padding: 5px;
  border-radius: 50%;
  box-sizing: border-box;
  transition:
    background var(--transition-base),
    color var(--transition-base);
}

/* ===========================================
   HERO VISUAL — fanned "browser window" stack
   (signature motif: bespoke builds, not one
   template stamped out many times)
   =========================================== */
.hero-visual {
  position: relative;
}

.window-card {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-lg);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.window-card::before {
  content: "";
  position: absolute;
  top: 16px;
  inset-inline-start: 18px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border-dark);
  box-shadow:
    15px 0 0 var(--color-border-dark),
    30px 0 0 var(--color-border-dark);
  opacity: 0.7;
}

.window-card--back-1 {
  transform: rotate(-7deg) translate(-6%, 4%);
  opacity: 0.75;
  z-index: 0;
}

.window-card--back-2 {
  transform: rotate(6deg) translate(6%, -5%);
  opacity: 0.55;
  z-index: 0;
}

.hero-visual .img-placeholder {
  position: relative;
  z-index: 2;
}

/* ===========================================
   IMAGE PLACEHOLDER  (artboard / crop-mark motif)
   =========================================== */
.img-placeholder {
  position: relative;
  aspect-ratio: 4 / 3;
  width: 100%;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    var(--color-primary-50),
    var(--color-bg-tertiary)
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  color: var(--color-text-muted);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: background var(--transition-base);
}

.img-placeholder .icon {
  font-size: 2rem;
  color: var(--color-primary-300);
}

.img-placeholder span {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.img-placeholder .corner {
  position: absolute;
  width: 18px;
  height: 18px;
}
.corner--tl {
  top: 12px;
  inset-inline-start: 12px;
  border-top: 2px solid var(--color-accent);
  border-inline-start: 2px solid var(--color-accent);
}
.corner--tr {
  top: 12px;
  inset-inline-end: 12px;
  border-top: 2px solid var(--color-accent);
  border-inline-end: 2px solid var(--color-accent);
}
.corner--bl {
  bottom: 12px;
  inset-inline-start: 12px;
  border-bottom: 2px solid var(--color-accent);
  border-inline-start: 2px solid var(--color-accent);
}
.corner--br {
  bottom: 12px;
  inset-inline-end: 12px;
  border-bottom: 2px solid var(--color-accent);
  border-inline-end: 2px solid var(--color-accent);
}

.img-placeholder--round {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-full);
  box-shadow:
    0 0 0 4px var(--color-bg-primary),
    0 0 0 6px var(--color-primary-200),
    var(--shadow-md);
}
.img-placeholder--round .icon {
  font-size: 1.4rem;
}
.img-placeholder--round span {
  display: none;
}

.img-placeholder--sm {
  box-shadow: var(--shadow-md);
}

/* ===========================================
   SUBHEADER — author bar
   =========================================== */
.subheader {
  position: relative;
  background: linear-gradient(
    120deg,
    var(--color-bg-primary) 55%,
    var(--color-primary-50) 130%
  );
  border-bottom: 1px solid var(--color-border-light);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.subheader::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-primary-500),
    var(--color-accent),
    var(--color-teal)
  );
  opacity: 0.85;
}

.author-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-block: var(--space-md);
}

.author-photo {
  width: 68px;
  height: 68px;
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.author-name {
  font-weight: 800;
  font-size: 1.08rem;
}

.author-role {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  font-size: var(--fs-xs);
  color: var(--color-primary-700);
  background: var(--color-primary-50);
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  transition:
    background var(--transition-base),
    color var(--transition-base);
}

.author-bio {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.author-social {
  display: flex;
  gap: var(--space-2xs);
  margin-inline-start: auto;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; /* slightly larger */
  height: 44px; /* slightly larger */
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.social-btn .icon {
  font-size: 1.15rem;
}

.social-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  /* keep background/color/border unchanged on hover */
  background: var(--color-bg-secondary) !important;
  border-color: var(--color-border-light) !important;
  color: inherit !important;
}

/* Image icons inside social buttons */
.social-btn img.social-btn__img {
  width: 22px; /* slightly larger */
  height: 22px; /* slightly larger */
  display: block;
  object-fit: contain;
  filter: none !important;
  transition:
    transform var(--transition-fast),
    filter var(--transition-fast);
  /* ensure SVG images don't inherit currentColor */
  color: initial !important;
  mix-blend-mode: normal !important;
}

.social-btn:hover img.social-btn__img,
.social-btn:focus img.social-btn__img,
.social-btn:active img.social-btn__img {
  /* ensure icon appearance doesn't change on hover/focus/active */
  filter: none !important;
  color: initial !important;
  mix-blend-mode: normal !important;
}

/* Stronger rule to stop accidental color changes from other selectors */
.social-btn:hover,
.social-btn:focus,
.social-btn:active {
  background: var(--color-bg-secondary) !important;
  border-color: var(--color-border-light) !important;
  color: inherit !important;
}

.social-btn:focus-visible,
.toc-list a:focus-visible,
.theme-toggle:focus-visible,
.faq-item summary:focus-visible {
  outline-offset: 2px;
}

/* ===========================================
   CONTENT COLUMNS
   =========================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--space-md);
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  padding-block: var(--space-xl) var(--space-2xl);
}

.main-content {
  flex: 1;
  min-width: 0;
  background: var(--color-bg-primary);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base);
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: var(--space-md);
}

.toc-card {
  background: var(--color-bg-primary);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base);
}

.toc-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc-list li + li {
  border-top: 1px solid var(--color-border, rgba(148, 163, 184, 0.25));
  margin-top: 6px;
  padding-top: 6px;
}

.toc-list a {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border-inline-start: 2px solid transparent;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.toc-list a:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.toc-list a.is-active {
  background: linear-gradient(90deg, var(--color-primary-50), transparent);
  color: var(--color-primary-700);
  border-inline-start-color: var(--color-primary-600);
  font-weight: 700;
}

/* ===========================================
   ARTICLE SECTIONS
   =========================================== */
.article-section {
  position: relative;
  padding-block: var(--space-xl);
  scroll-margin-top: var(--space-md);
  content-visibility: auto;
  contain-intrinsic-size: auto 520px;
}

.article-section:not(:last-of-type)::after {
  content: "";
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-border) 20%,
    var(--color-border) 80%,
    transparent
  );
}

.article-section:first-of-type {
  padding-top: 0;
}

.article-section:last-of-type {
  padding-bottom: 0;
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.section-num {
  font-size: 2.1rem;
  font-weight: 800;
  background: linear-gradient(
    160deg,
    var(--color-primary-200),
    var(--color-primary-100)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  transition: color var(--transition-base);
}

.section-heading h2 {
  font-size: var(--fs-h2);
}

.section-text p + p {
  margin-top: var(--space-sm);
}

.section-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.section-split .img-placeholder {
  order: 1;
  max-width: 100%;
}

.section-split .section-text {
  order: 2;
}

/* Benefits list */
.benefit-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.benefit-list li {
  display: flex;
  gap: var(--space-xs);
  align-items: flex-start;
}

.benefit-check {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition:
    background var(--transition-base),
    color var(--transition-base);
}

.benefit-check .icon {
  font-size: 0.85rem;
  stroke-width: 2.4;
}

.benefit-list strong {
  display: block;
  color: var(--color-text-primary);
  font-size: var(--fs-body);
  margin-bottom: 2px;
}

.benefit-list span {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* Highlight panel (reused for summary / pricing intro) */
.highlight-panel {
  position: relative;
  overflow: hidden;
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-100);
  border-inline-start: 4px solid var(--color-primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.highlight-panel::before {
  content: "\201C";
  position: absolute;
  top: -28px;
  inset-inline-end: 14px;
  font-size: 7rem;
  font-weight: 800;
  color: var(--color-primary-200);
  opacity: 0.6;
  line-height: 1;
  pointer-events: none;
}

.highlight-panel p {
  position: relative;
}

.highlight-panel p + p {
  margin-top: var(--space-sm);
}

/* ===========================================
   USEFULNESS CARDS
   =========================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-sm);
}

.use-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-base),
    border-color var(--transition-fast);
}

.use-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-200);
}

.use-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--color-text-inverse);
}

.use-card-icon .icon {
  font-size: 1.3rem;
}

.use-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: 4px;
}

.use-card p {
  font-size: var(--fs-sm);
}

.bg-success {
  background: var(--color-success);
  box-shadow: 0 10px 22px -8px rgba(34, 197, 94, 0.55);
}
.bg-info {
  background: var(--color-info);
  box-shadow: 0 10px 22px -8px rgba(6, 182, 212, 0.55);
}
.bg-primary {
  background: var(--color-primary-500);
  box-shadow: 0 10px 22px -8px rgba(91, 92, 245, 0.55);
}
.bg-trust {
  background: var(--color-primary-800);
  box-shadow: 0 10px 22px -8px rgba(44, 39, 149, 0.55);
}
.bg-accent {
  background: var(--color-accent);
  box-shadow: 0 10px 22px -8px rgba(255, 138, 61, 0.55);
}

/* ===========================================
   PRICE TABLE
   =========================================== */
.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
}

.price-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: var(--fs-sm);
  background: var(--color-bg-primary);
}

.price-table thead th {
  background: linear-gradient(
    120deg,
    var(--color-primary-600),
    var(--color-primary-800)
  );
  color: var(--color-text-inverse);
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 17px 18px;
  text-align: center;
}

.price-table thead th:first-child {
  text-align: start;
}

.price-table tbody td {
  padding: 16px 18px;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.price-table tbody tr:nth-child(even):not(.is-popular) td {
  background: var(--color-bg-secondary);
}

.price-table tbody tr:last-child td {
  border-bottom: none;
}

.price-table tbody td:first-child {
  text-align: start;
  color: var(--color-text-primary);
  font-weight: 700;
}

.price-table tbody tr:hover td {
  background: var(--color-primary-50);
}

.price-table tbody tr.is-popular td {
  background: var(--color-primary-50);
}

.price-table tbody tr.is-popular:hover td {
  background: var(--color-primary-100);
}

.price-table tbody tr.is-popular td:first-child {
  position: relative;
  border-inline-start: 3px solid var(--color-primary-600);
  padding-inline-start: 15px;
  padding-inline-end: 92px;
}

.popular-badge {
  position: absolute;
  top: 50%;
  inset-inline-end: 10px;
  transform: translateY(-50%);
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-text-inverse);
  background: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-accent-hover)
  );
  padding: 4px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 6px 14px -4px rgba(255, 138, 61, 0.55);
  margin-inline-start: 6px;
}

.price-note {
  margin-top: var(--space-sm);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* ===========================================
   FAQ
   =========================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.faq-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-primary);
  transition:
    background var(--transition-base),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary-200);
}

.faq-item[open] {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary-200);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--fs-body);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .icon {
  color: var(--color-primary-600);
  background: var(--color-primary-50);
  width: 1.7em;
  height: 1.7em;
  padding: 5px;
  border-radius: 50%;
  box-sizing: border-box;
  transition:
    transform var(--transition-fast),
    background var(--transition-fast),
    color var(--transition-fast);
  flex-shrink: 0;
}

.faq-item[open] summary .icon {
  transform: rotate(180deg);
  background: var(--color-primary-600);
  color: var(--color-text-inverse);
}

.faq-item p {
  margin-top: var(--space-xs);
  font-size: var(--fs-sm);
}

/* ===========================================
   SOURCES
   =========================================== */
.source-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.source-list li {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
}

.source-index {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--fs-sm);
  transition:
    background var(--transition-base),
    color var(--transition-base);
}

.source-list strong {
  display: block;
  font-size: var(--fs-body);
  color: var(--color-text-primary);
}

.source-list a {
  font-size: var(--fs-sm);
  color: var(--color-primary-600);
  word-break: break-all;
}

.source-list a:hover {
  text-decoration: underline;
}

.source-url {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* ===========================================================
   DARK THEME
   Uses the same color variables supplied in the tokens file.
   =========================================================== */
[data-theme="dark"] {
  color-scheme: dark;
  /* Surfaces */
  --color-bg-primary: #0d0e1f;
  --color-bg-secondary: #13142a;
  --color-bg-tertiary: #1b1c3a;

  /* Text */
  --color-text-primary: #f1f1fb;
  --color-text-secondary: #a6a8ca;
  --color-text-muted: #6d6f92;
  --color-text-inverse: #0d0e1f;

  /* Borders */
  --color-border-light: #22233f;
  --color-border: #2e3054;
  --color-border-dark: #454875;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 26px -6px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 55px -14px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 34px 80px -18px rgba(0, 0, 0, 0.7);
  --shadow-glow:
    0 0 0 1px rgba(124, 130, 250, 0.2), 0 20px 50px -12px rgba(91, 92, 245, 0.5);
}

/* Component-level adjustments so light-tinted surfaces stay
   legible once the base surface/text tokens flip to dark. */
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}
[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .hero {
  background: linear-gradient(
    180deg,
    var(--color-bg-secondary),
    var(--color-bg-primary) 85%
  );
}

[data-theme="dark"] .aurora-blob--a {
  opacity: 0.3;
}
[data-theme="dark"] .aurora-blob--b {
  opacity: 0.2;
}
[data-theme="dark"] .aurora-blob--c {
  opacity: 0.16;
}

[data-theme="dark"] .eyebrow {
  background: linear-gradient(
    135deg,
    rgba(124, 130, 250, 0.16),
    rgba(255, 138, 61, 0.12)
  );
  border-color: rgba(124, 130, 250, 0.32);
  color: var(--color-primary-300);
}

[data-theme="dark"] .meta-item {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-light);
}

[data-theme="dark"] .meta-item .icon {
  background: rgba(124, 130, 250, 0.16);
}

[data-theme="dark"] .window-card {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

[data-theme="dark"] .img-placeholder {
  background: linear-gradient(
    135deg,
    var(--color-bg-tertiary),
    var(--color-bg-secondary)
  );
}

[data-theme="dark"] .img-placeholder .icon {
  color: var(--color-primary-400);
}

[data-theme="dark"] .img-placeholder--round {
  box-shadow:
    0 0 0 4px var(--color-bg-primary),
    0 0 0 6px rgba(124, 130, 250, 0.35),
    var(--shadow-md);
}

[data-theme="dark"] .subheader {
  background: linear-gradient(
    120deg,
    var(--color-bg-primary) 55%,
    var(--color-bg-tertiary) 140%
  );
}

[data-theme="dark"] .author-role {
  background: rgba(124, 130, 250, 0.16);
  color: var(--color-primary-300);
}

[data-theme="dark"] .social-btn {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-light);
}

[data-theme="dark"] .section-num {
  background: linear-gradient(
    160deg,
    rgba(124, 130, 250, 0.3),
    rgba(124, 130, 250, 0.1)
  );
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="dark"] .benefit-check {
  background: rgba(124, 130, 250, 0.18);
  color: var(--color-primary-300);
}

[data-theme="dark"] .highlight-panel {
  background: rgba(124, 130, 250, 0.08);
  border-color: rgba(124, 130, 250, 0.25);
}

[data-theme="dark"] .highlight-panel::before {
  color: rgba(124, 130, 250, 0.16);
}

[data-theme="dark"] .use-card {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-light);
}

[data-theme="dark"] .toc-list a.is-active {
  background: linear-gradient(90deg, rgba(124, 130, 250, 0.16), transparent);
  color: var(--color-primary-300);
  border-inline-start-color: var(--color-primary-400);
}

[data-theme="dark"] .price-table thead th {
  background: linear-gradient(
    120deg,
    var(--color-primary-700),
    var(--color-primary-900)
  );
}

[data-theme="dark"] .price-table tbody tr:nth-child(even):not(.is-popular) td {
  background: var(--color-bg-secondary);
}

[data-theme="dark"] .price-table tbody tr:hover td {
  background: rgba(124, 130, 250, 0.1);
}

[data-theme="dark"] .price-table tbody tr.is-popular td {
  background: rgba(124, 130, 250, 0.1);
}

[data-theme="dark"] .price-table tbody tr.is-popular:hover td {
  background: rgba(124, 130, 250, 0.17);
}

[data-theme="dark"] .popular-badge {
  box-shadow: 0 6px 16px -4px rgba(255, 138, 61, 0.4);
}

[data-theme="dark"] .faq-item {
  background: var(--color-bg-secondary);
}

[data-theme="dark"] .faq-item summary .icon {
  background: rgba(124, 130, 250, 0.16);
}

[data-theme="dark"] .faq-item[open] summary .icon {
  background: var(--color-primary-500);
  color: var(--color-text-inverse);
}

[data-theme="dark"] .source-index {
  background: rgba(124, 130, 250, 0.18);
  color: var(--color-primary-300);
}

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

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding-block: var(--space-xl);
  }

  .hero-inner .hero-visual {
    order: -1;
    max-width: 420px;
  }

  .section-split {
    grid-template-columns: 1fr;
  }

  .section-split .img-placeholder {
    max-width: 420px;
  }

  .container {
    flex-direction: column;
  }

  .main-content {
    width: 100%;
  }

  .sidebar {
    width: 100%;
    position: static;
    order: -1;
  }

  .toc-list {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding: 4px 0 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .toc-list li {
    flex: 0 0 auto;
  }

  .toc-list li + li {
    border-top: none;
    margin-top: 0;
    padding-top: 0;
  }

  .toc-list a {
    white-space: nowrap;
    border-inline-start: none;
    border: 1px solid var(--color-border-light);
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 14px;
  }

  .toc-list a.is-active {
    border-color: var(--color-primary-600);
    border-inline-start: 1px solid var(--color-primary-600);
  }
}

@media (max-width: 640px) {
  .theme-toggle {
    width: 42px;
    height: 42px;
    top: 12px;
    inset-inline-end: 12px;
  }

  .hero-inner {
    padding-block: var(--space-lg);
    padding-top: 60px;
  }

  .hero-desc {
    max-width: none;
  }

  .hero-meta {
    gap: var(--space-2xs);
  }

  .author-bar {
    flex-wrap: wrap;
    padding-block: var(--space-sm);
  }

  .author-social {
    margin-inline-start: 0;
    width: 100%;
    justify-content: flex-start;
  }

  .page-body {
    padding-block: var(--space-md) var(--space-xl);
  }

  .toc-card {
    position: sticky;
    top: 12px;
    z-index: 10;
  }

  .toc-list {
    gap: 6px;
    padding-bottom: 6px;
  }

  .toc-list a {
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .main-content,
  .toc-card,
  .highlight-panel {
    padding: var(--space-md);
  }

  .container {
    gap: var(--space-md);
    padding-inline: var(--space-sm);
  }

  .article-section {
    padding-block: var(--space-lg);
  }

  .section-num {
    font-size: 1.5rem;
  }

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

  .use-card {
    padding: var(--space-sm);
  }

  .source-list li {
    padding: var(--space-sm);
  }

  /* Price table becomes a stacked card list instead of a
     horizontally-scrolled table, so it reads well on a phone. */
  .table-scroll {
    overflow-x: visible;
    border: none;
    box-shadow: none;
    border-radius: 0;
  }

  .price-table {
    min-width: 0;
  }

  .price-table thead {
    display: none;
  }

  .price-table,
  .price-table tbody,
  .price-table tr,
  .price-table td {
    display: block;
    width: 100%;
  }

  .price-table tbody tr {
    margin-bottom: var(--space-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .price-table tbody tr.is-popular {
    border: 2px solid var(--color-primary-500);
  }

  .price-table tbody tr.is-popular td:first-child {
    border-inline-start: none;
    padding-inline-end: 12px;
  }

  .price-table tbody tr.is-popular td:first-child .popular-badge {
    position: static;
    display: inline-block;
    transform: none;
    margin-top: 6px;
  }

  .price-table td {
    display: grid;
    grid-template-columns: minmax(84px, 34%) minmax(0, 1fr);
    gap: 12px;
    align-items: start;
    text-align: end;
    padding: 10px 12px;
    position: relative;
    border-bottom: 1px solid var(--color-border-light);
    min-height: 44px;
  }

  .price-table td:first-child {
    text-align: end;
  }

  .price-table tbody tr:last-child td,
  .price-table td:last-child {
    border-bottom: none;
  }

  .price-table td::before {
    content: attr(data-label);
    min-width: 0;
    font-weight: 700;
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
    text-align: start;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 420px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2xs);
  }

  .window-card--back-1,
  .window-card--back-2 {
    display: none;
  }
}

/* ===========================================================
   ARTICLE BODY CONTENT — styling for raw HTML coming from the
   rich text editor (intro / section.content / conclusion).
   Scoped to .section-text and .highlight-panel so it never
   touches .price-table or anything else on the page.
   =========================================================== */

.section-text b,
.section-text strong,
.highlight-panel b,
.highlight-panel strong {
  color: var(--color-text-primary);
  font-weight: 700;
}

.section-text u,
.highlight-panel u {
  text-decoration-color: var(--color-primary-400);
  text-underline-offset: 3px;
}

.section-text ul,
.section-text ol,
.highlight-panel ul,
.highlight-panel ol {
  list-style: revert;
  margin: var(--space-sm) 0;
  padding-inline-start: 1.4em;
  display: block;
}

.section-text li,
.highlight-panel li {
  margin-block: 6px;
  color: var(--color-text-secondary);
}

.section-text ul li::marker,
.highlight-panel ul li::marker {
  color: var(--color-primary-500);
}

.section-text ol li::marker,
.highlight-panel ol li::marker {
  color: var(--color-primary-600);
  font-weight: 700;
}

.section-text p,
.highlight-panel p {
  margin-block: var(--space-sm);
}

.section-text p:first-child,
.highlight-panel p:first-child {
  margin-top: 0;
}

.section-text p:last-child,
.highlight-panel p:last-child {
  margin-bottom: 0;
}

.section-text a,
.highlight-panel a {
  color: var(--color-primary-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.section-text a:hover,
.highlight-panel a:hover {
  color: var(--color-primary-800);
}

/* --- Editor tables --- */
.section-text table,
.highlight-panel table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-md);
  font-size: var(--fs-sm);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

/* wrap for horizontal scroll on narrow screens without breaking layout */
.section-text table,
.highlight-panel table {
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}

.section-text table thead,
.section-text table tbody,
.section-text table tr,
.highlight-panel table thead,
.highlight-panel table tbody,
.highlight-panel table tr {
  display: table;
  width: 100%;
  table-layout: fixed;
}

.section-text th,
.highlight-panel th {
  background: linear-gradient(
    120deg,
    var(--color-primary-600),
    var(--color-primary-800)
  );
  color: var(--color-text-inverse);
  font-weight: 700;
  text-align: start;
  padding: 12px 16px;
  white-space: normal;
}

.section-text td,
.highlight-panel td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  white-space: normal;
  word-break: break-word;
}

.section-text tbody tr:last-child td,
.highlight-panel tbody tr:last-child td {
  border-bottom: none;
}

.section-text tbody tr:nth-child(even) td,
.highlight-panel tbody tr:nth-child(even) td {
  background: var(--color-bg-secondary);
}

.section-text tbody tr:hover td,
.highlight-panel tbody tr:hover td {
  background: var(--color-primary-50);
}

[data-theme="dark"] .section-text th,
[data-theme="dark"] .highlight-panel th {
  background: linear-gradient(
    120deg,
    var(--color-primary-700),
    var(--color-primary-900)
  );
}

[data-theme="dark"] .section-text table,
[data-theme="dark"] .highlight-panel table {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-light);
}

[data-theme="dark"] .section-text tbody tr:nth-child(even) td,
[data-theme="dark"] .highlight-panel tbody tr:nth-child(even) td {
  background: var(--color-bg-tertiary);
}

[data-theme="dark"] .section-text tbody tr:hover td,
[data-theme="dark"] .highlight-panel tbody tr:hover td {
  background: rgba(124, 130, 250, 0.1);
}

/* Mobile: keep table readable via horizontal scroll rather than
   forcing a stacked layout (raw editor tables have no data-label
   attributes to power the .price-table mobile pattern). */
@media (max-width: 640px) {
  .section-text table,
  .highlight-panel table {
    border-radius: var(--radius-sm);
  }

  .section-text th,
  .section-text td,
  .highlight-panel th,
  .highlight-panel td {
    padding: 10px 12px;
  }
}