/* ==========================================================================
   GREENLYTES — GUIDE TEMPLATE
   File: guide.css

   Purpose
   -------
   Shared editorial and layout styles for all Greenlytes Lab guide pages.
   Tool-specific styling lives separately in /assets/css/tools/.

   Dependencies
   ------------
   1. base.css
   2. components.css
   3. guide.css
   4. Optional tool CSS, loaded only when a page uses that tool

   Organisation
   ------------
   00. Global Guide Safety
   01. Guide Hero
   02. Quick Answer
   03. Interactive Explainer
   04. Main Guide Content + Table of Contents
   05. Practical Comparison Table
   06. Common Buying Mistakes
   07. Recommended Lighting Categories
   08. Guide FAQ
   09. Related Guides

   Architecture rules
   ------------------
   - Keep this file reusable across all guide pages.
   - Do not place tool-specific selectors in this file.
   - Tool CSS belongs in /assets/css/tools/.
   - Optional guide modules may be removed independently.
   - Keep module-specific responsive rules with their module.
   - Reserve the final override section for genuine cross-module fixes.
   ========================================================================== */

/* ==========================================================================
   00. GLOBAL GUIDE SAFETY
   ========================================================================== */

.guide-hero *,
.guide-quick-answer *,
.guide-explainer *,
.guide-article *,
.guide-comparison *,
.guide-mistakes *,
.guide-categories *,
.guide-faq *,
.guide-related * {
  box-sizing: border-box;
}

.guide-hero,
.guide-quick-answer,
.guide-explainer,
.guide-article,
.guide-comparison,
.guide-mistakes,
.guide-categories,
.guide-faq,
.guide-related {
  width: 100%;
  max-width: 100%;
}

.guide-hero__inner,
.guide-quick-answer__inner,
.guide-explainer__inner,
.guide-article__inner,
.guide-comparison__inner,
.guide-mistakes__inner,
.guide-categories__inner,
.guide-faq__inner,
.guide-related__inner {
  min-width: 0;
}


/* ==========================================================================
   01. GUIDE HERO — REQUIRED
   ========================================================================== */

.guide-hero {
  position: relative;
  padding: 30px 0 68px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 88% 8%,
      rgba(112, 157, 94, 0.11),
      transparent 32rem
    ),
    linear-gradient(
      180deg,
      #fbfcfa 0%,
      #f4f7f1 100%
    );
}

.guide-hero__inner {
  margin-inline: auto;
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */

.guide-hero__breadcrumb {
  margin-bottom: 30px;
}

/* ==========================================================================
   Main Hero layout
   ========================================================================== */

.guide-hero__layout {
  display: grid;
  min-width: 0;
  grid-template-columns:
    minmax(0, 0.92fr)
    minmax(420px, 1.08fr);
  align-items: center;
  gap: clamp(54px, 7vw, 104px);
}

/* ==========================================================================
   Editorial content
   ========================================================================== */

.guide-hero__content {
  min-width: 0;
}

.guide-hero__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.guide-hero__brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border: 1px solid rgba(58, 104, 55, 0.15);
  border-radius: 50%;
  color: var(--color-green-dark);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 25px rgba(31, 60, 33, 0.07);
}

.guide-hero__brand-mark svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-hero__brand > span:last-child {
  display: grid;
  gap: 3px;
}

.guide-hero__brand strong {
  color: var(--color-green-deep);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  line-height: 1;
  text-transform: uppercase;
}

.guide-hero__brand small {
  color: var(--color-text-muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.88rem;
  font-style: italic;
  line-height: 1.2;
}

.guide-hero__type {
  display: block;
  width: fit-content;
  margin-top: 34px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(53, 96, 51, 0.35);
  color: var(--color-green-dark);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  line-height: 1;
  text-transform: uppercase;
}

.guide-hero h1 {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.4rem, 5.6vw, 6.3rem);
  font-weight: 400;
  line-height: 0.94;
  letter-spacing: -0.058em;
  text-wrap: balance;
}

.guide-hero h1 span {
  display: block;
  color: var(--color-green-dark);
  font-style: italic;
}

.guide-hero__lead {
  max-width: 670px;
  margin: 27px 0 0;
  color: var(--color-text-muted);
  font-size: clamp(0.98rem, 1.25vw, 1.08rem);
  line-height: 1.76;
}

/* ==========================================================================
   Guide metadata
   ========================================================================== */

.guide-hero__meta {
  display: grid;
  grid-template-columns:
    minmax(105px, 0.8fr)
    minmax(115px, 0.9fr)
    minmax(190px, 1.5fr);
  margin: 34px 0 0;
  padding-top: 23px;
  border-top: 1px solid rgba(32, 58, 36, 0.12);
}

.guide-hero__meta > div {
  min-width: 0;
  padding-right: 20px;
}

.guide-hero__meta > div + div {
  padding-left: 20px;
  border-left: 1px solid rgba(32, 58, 36, 0.11);
}

.guide-hero__meta dt {
  color: rgba(27, 44, 31, 0.52);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

.guide-hero__meta dd {
  margin: 7px 0 0;
  color: var(--color-ink);
  font-size: 0.82rem;
  font-weight: 720;
  line-height: 1.4;
}

/* ==========================================================================
   Editorial visual
   ========================================================================== */

.guide-hero__visual {
  position: relative;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  padding: 11px;
  border: 1px solid rgba(35, 66, 38, 0.1);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow:
    0 26px 70px rgba(26, 48, 30, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
}

.guide-hero__image {
  position: relative;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  aspect-ratio: 7 / 4;
  overflow: hidden;
  border-radius: 20px;
  background: #dfe7da;
  isolation: isolate;
}

.guide-hero__image img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.guide-hero__image-overlay {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      180deg,
      rgba(7, 20, 11, 0.02) 45%,
      rgba(7, 20, 11, 0.29) 100%
    );
}

.guide-hero__visual-details {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 18px 7px 8px;
}

.guide-hero__visual-details > span {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 0 17px;
}

.guide-hero__visual-details > span + span {
  border-left: 1px solid rgba(35, 66, 38, 0.1);
}

.guide-hero__visual-details small {
  color: rgba(27, 44, 31, 0.5);
  font-size: 0.63rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  line-height: 1.3;
  text-transform: uppercase;
}

.guide-hero__visual-details strong {
  color: var(--color-ink);
  font-size: 0.78rem;
  font-weight: 750;
  line-height: 1.4;
}

/* ==========================================================================
   Inside this guide
   ========================================================================== */

.guide-hero__contents {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 29px;
  margin-top: 46px;
  padding: 22px 28px;
  border: 1px solid rgba(39, 72, 43, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 35px rgba(28, 51, 32, 0.045);
}

.guide-hero__contents > strong {
  color: var(--color-green-deep);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
  white-space: nowrap;
}

.guide-hero__contents ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 25px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-hero__contents li {
  position: relative;
  padding-left: 18px;
  color: var(--color-text-muted);
  font-size: 0.80rem;
  font-weight: 650;
  line-height: 1.45;
}

.guide-hero__contents li::before {
  content: "";
  position: absolute;
  top: 0.43em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-green-dark);
  box-shadow: 0 0 0 4px rgba(65, 111, 62, 0.09);
}

/* ==========================================================================
   02. QUICK ANSWER — REQUIRED
   Immediate guidance for readers who need a concise answer.
   ========================================================================== */

.guide-quick-answer {
  position: relative;
  padding: 72px 0 78px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 7% 12%,
      rgba(132, 174, 111, 0.1),
      transparent 27rem
    ),
    linear-gradient(
      180deg,
      #f7f9f5 0%,
      #ffffff 100%
    );
}

.guide-quick-answer__inner {
  margin-inline: auto;
}

/* ==========================================================================
   Quick Answer header
   ========================================================================== */

.guide-quick-answer__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 39px;
}

.guide-quick-answer__header h2 {
  max-width: 760px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.55rem, 4.4vw, 4.6rem);
  line-height: 0.99;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.guide-quick-answer__header > .section-summary {
  max-width: 560px;
}

/* ==========================================================================
   Recommendation grid
   ========================================================================== */

.guide-quick-answer__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 13px;
}

.quick-answer-card {
  display: flex;
  min-width: 0;
  min-height: 350px;
  flex-direction: column;
  padding: 23px 20px 19px;
  border: 1px solid rgba(39, 73, 43, 0.11);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow:
    0 15px 38px rgba(29, 52, 32, 0.055),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.quick-answer-card:hover {
  transform: translateY(-4px);
  border-color: rgba(55, 101, 58, 0.23);
  box-shadow:
    0 22px 46px rgba(29, 52, 32, 0.085),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
}

.quick-answer-card__icon {
  display: grid;
  place-items: center;
  width: 49px;
  height: 49px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eaf3e5;
}

.quick-answer-card__icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.quick-answer-card__content {
  margin-top: 22px;
}

.quick-answer-card h3 {
  margin: 0;
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.3;
}

.quick-answer-card__range {
  margin: 18px 0 0;
  color: var(--color-green-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 1.9vw, 2.15rem);
  line-height: 1;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.quick-answer-card__range span {
  display: block;
  margin-top: 6px;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: 0.42em;
  letter-spacing: 0;
}

.quick-answer-card__content > p:last-child {
  margin: 18px 0 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.quick-answer-card__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 13px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(39, 72, 43, 0.1);
  color: var(--color-green-dark);
  font-size: 0.78rem;
  font-weight: 780;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
}

.quick-answer-card__link span {
  flex: 0 0 auto;
  font-size: 1rem;
  transition: transform 200ms ease;
}

.quick-answer-card__link:hover span {
  transform: translateX(4px);
}

/* ==========================================================================
   Supporting note
   ========================================================================== */

.guide-quick-answer__note {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  max-width: 900px;
  margin: 27px auto 0;
  padding: 19px 23px;
  border: 1px solid rgba(48, 91, 50, 0.13);
  border-radius: 15px;
  background: #edf5e9;
}

.guide-quick-answer__note-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: rgba(255, 255, 255, 0.7);
}

.guide-quick-answer__note-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-quick-answer__note p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.guide-quick-answer__note strong {
  color: var(--color-green-deep);
}

/* ==========================================================================
   03. INTERACTIVE EXPLAINER — OPTIONAL
   Reusable educational visualization for Greenlytes Lab guides.
   ========================================================================== */

.guide-explainer {
  position: relative;
  padding: 76px 0 82px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 91% 10%,
      rgba(117, 158, 97, 0.1),
      transparent 29rem
    ),
    #ffffff;
}

.guide-explainer__inner {
  margin-inline: auto;
}

/* ==========================================================================
   Explainer header
   ========================================================================== */

.guide-explainer__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.16fr)
    minmax(300px, 0.84fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 40px;
}

.guide-explainer__header h2 {
  max-width: 800px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-explainer__header > .section-summary {
  max-width: 560px;
}

/* ==========================================================================
   Greenlytes Insight
   ========================================================================== */

.guide-insight {
  display: grid;
  grid-template-columns:
    200px
    minmax(0, 1.3fr)
    minmax(260px, 0.7fr);
  align-items: center;
  gap: 40px;
  margin-top: 28px;
  padding: 32px 35px;
  border: 1px solid rgba(54, 100, 56, 0.14);
  border-radius: 22px;
  background:
    radial-gradient(
      circle at 8% 50%,
      rgba(124, 170, 104, 0.16),
      transparent 14rem
    ),
    #eff6eb;
}

.guide-insight__identity {
  display: flex;
  align-items: center;
  gap: 13px;
}

.guide-insight__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: rgba(255, 255, 255, 0.72);
}

.guide-insight__icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-insight__identity > span:last-child {
  display: grid;
  gap: 4px;
}

.guide-insight__identity small {
  color: var(--color-green-dark);
  font-size: 0.59rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guide-insight__identity strong {
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
}

.guide-insight blockquote {
  margin: 0;
}

.guide-insight blockquote p {
  margin: 0;
  color: var(--color-green-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  line-height: 1.35;
}

.guide-insight__takeaway {
  padding-left: 30px;
  border-left: 1px solid rgba(53, 96, 55, 0.16);
}

.guide-insight__takeaway > span {
  color: var(--color-green-dark);
  font-size: 0.59rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-insight__takeaway p {
  margin: 10px 0 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

/* ==========================================================================
   Interactive Explainer responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-explainer {
    padding: 60px 0 66px;
  }

  .guide-explainer__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-explainer__header > .section-summary {
    max-width: 620px;
  }

  .guide-insight {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .guide-insight__takeaway {
    padding: 22px 0 0;
    border-top: 1px solid rgba(53, 96, 55, 0.16);
    border-left: 0;
  }
}

@media (max-width: 680px) {
  .guide-explainer {
    padding: 48px 0 54px;
  }

  .guide-explainer__header {
    margin-bottom: 30px;
  }

  .guide-explainer__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-insight {
    padding: 26px 21px;
  }
}

/* ==========================================================================
   Quick Answer responsive adjustments
   ========================================================================== */

@media (max-width: 1180px) {
  .guide-quick-answer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1050px) {
  .guide-quick-answer {
    padding: 58px 0 64px;
  }

  .guide-quick-answer__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-quick-answer__header > .section-summary {
    max-width: 620px;
  }
}

@media (max-width: 680px) {
  .guide-quick-answer {
    padding: 48px 0 52px;
  }

  .guide-quick-answer__header {
    margin-bottom: 30px;
  }

  .guide-quick-answer__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-quick-answer__grid {
    grid-template-columns: 1fr;
  }

  .quick-answer-card {
    min-height: 0;
    padding: 21px 19px 18px;
  }

  .quick-answer-card__content {
    margin-top: 18px;
  }

  .quick-answer-card__range span {
    display: inline;
    margin: 0 0 0 5px;
  }

  .guide-quick-answer__note {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 20px;
  }
}

/* ==========================================================================
   04. MAIN GUIDE CONTENT — REQUIRED
   Full editorial content and table of contents.
   ========================================================================== */

.guide-article {
  position: relative;
  padding: 78px 0 86px;
  background:
    linear-gradient(
      180deg,
      #f7f9f5 0%,
      #ffffff 18%,
      #ffffff 100%
    );
}

.guide-article__inner {
  margin-inline: auto;
}


/* ==========================================================================
   Article header
   ========================================================================== */

.guide-article__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 54px;
}

.guide-article__header h2 {
  max-width: 800px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-article__header > .section-summary {
  max-width: 570px;
}


/* ==========================================================================
   Article layout
   ========================================================================== */

.guide-article__layout {
  display: grid;
  grid-template-columns:
    minmax(220px, 0.31fr)
    minmax(0, 0.69fr);
  align-items: start;
  gap: clamp(48px, 7vw, 110px);
}


/* ==========================================================================
   Table of contents
   ========================================================================== */

.guide-toc {
  position: sticky;
  top: 110px;
}

.guide-toc__card {
  padding: 25px 23px 21px;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 18px;
  background: #f5f8f2;
}

.guide-toc__label {
  display: block;
  padding-bottom: 17px;
  border-bottom: 1px solid rgba(39, 72, 43, 0.11);
  color: var(--color-green-dark);
  font-size: 0.63rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guide-toc ol {
  display: grid;
  gap: 0;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: guide-toc;
}

.guide-toc li {
  counter-increment: guide-toc;
}

.guide-toc a {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 9px;
  padding: 11px 0;
  color: var(--color-text-muted);
  font-size: 0.80rem;
  font-weight: 680;
  line-height: 1.45;
  text-decoration: none;
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.guide-toc a::before {
  content: counter(guide-toc, decimal-leading-zero);
  color: rgba(49, 91, 51, 0.48);
  font-size: 0.58rem;
  font-weight: 800;
}

.guide-toc a:hover {
  color: var(--color-green-deep);
  transform: translateX(3px);
}

.guide-toc__tool-link {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-top: 14px;
  padding: 14px 15px !important;
  border-radius: 9px;
  color: #ffffff !important;
  background: var(--color-green-dark);
}

.guide-toc__tool-link::before {
  display: none;
}


/* ==========================================================================
   Article prose
   ========================================================================== */

.guide-prose {
  min-width: 0;
}

.guide-prose__section {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 24px;
  padding-bottom: 57px;
  scroll-margin-top: 110px;
}

.guide-prose__section + .guide-prose__section {
  padding-top: 57px;
  border-top: 1px solid rgba(39, 72, 43, 0.11);
}

.guide-prose__number {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(53, 98, 55, 0.16);
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eef5ea;
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.05em;
}

.guide-prose__content {
  max-width: 800px;
}

.guide-prose h3 {
  max-width: 760px;
  margin: 0;
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 3.2vw, 3.25rem);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.guide-prose p {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--color-text-muted);
  font-size: 0.91rem;
  line-height: 1.82;
}

.guide-prose__lead {
  color: var(--color-ink) !important;
  font-size: 1.03rem !important;
  line-height: 1.75 !important;
}


/* ==========================================================================
   Article callouts
   ========================================================================== */

.guide-prose__callout {
  max-width: 720px;
  margin-top: 27px;
  padding: 22px 24px;
  border-left: 3px solid var(--color-green-dark);
  border-radius: 0 13px 13px 0;
  background: #f2f7ef;
}

.guide-prose__callout strong {
  color: var(--color-green-deep);
  font-size: 0.80rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.guide-prose__callout p {
  margin-top: 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
  line-height: 1.55;
}


/* ==========================================================================
   Watts versus lumens comparison
   ========================================================================== */

.guide-prose__comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 720px;
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 15px;
}

.guide-prose__comparison > div {
  display: grid;
  gap: 8px;
  padding: 24px;
  background: #f7faf5;
}

.guide-prose__comparison > div + div {
  border-left: 1px solid rgba(39, 72, 43, 0.12);
  background: #edf5e9;
}

.guide-prose__comparison span {
  color: var(--color-green-dark);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-prose__comparison strong {
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 400;
}


/* ==========================================================================
   Article conclusion
   ========================================================================== */

.guide-prose__conclusion {
  max-width: 760px;
  margin-top: 30px;
  padding: 29px 31px;
  border-radius: 18px;
  color: #ffffff;
  background:
    linear-gradient(
      135deg,
      #173c22 0%,
      #092a17 100%
    );
}

.guide-prose__conclusion .eyebrow {
  color: #b9d9ac;
}

.guide-prose__conclusion p {
  margin-top: 13px;
  color: rgba(255, 255, 255, 0.86);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.45;
}


/* ==========================================================================
   Main Guide responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-article {
    padding: 62px 0 68px;
  }

  .guide-article__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-article__header > .section-summary {
    max-width: 620px;
  }

  .guide-article__layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .guide-toc {
    position: static;
  }

  .guide-toc__card {
    max-width: 760px;
  }

  .guide-toc ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 25px;
  }
}

@media (max-width: 680px) {
  .guide-article {
    padding: 50px 0 56px;
  }

  .guide-article__header {
    margin-bottom: 34px;
  }

  .guide-article__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-toc ol {
    grid-template-columns: 1fr;
  }

  .guide-prose__section {
    grid-template-columns: 1fr;
    gap: 17px;
    padding-bottom: 43px;
  }

  .guide-prose__section + .guide-prose__section {
    padding-top: 43px;
  }

  .guide-prose h3 {
    font-size: clamp(1.85rem, 9vw, 2.65rem);
  }

  .guide-prose__comparison {
    grid-template-columns: 1fr;
  }

  .guide-prose__comparison > div + div {
    border-top: 1px solid rgba(39, 72, 43, 0.12);
    border-left: 0;
  }

  .guide-prose__callout,
  .guide-prose__conclusion {
    padding: 22px 20px;
  }
}


/* ==========================================================================
   05. PRACTICAL COMPARISON TABLE — RECOMMENDED
   Scannable application guidance with contextual internal links.
   ========================================================================== */

.guide-comparison {
  position: relative;
  padding: 78px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 92% 10%,
      rgba(123, 168, 101, 0.1),
      transparent 28rem
    ),
    #f7f9f5;
}

.guide-comparison__inner {
  margin-inline: auto;
}


/* ==========================================================================
   Comparison header
   ========================================================================== */

.guide-comparison__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 42px;
}

.guide-comparison__header h2 {
  max-width: 820px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-comparison__header > .section-summary {
  max-width: 570px;
}


/* ==========================================================================
   Responsive table wrapper
   ========================================================================== */

.guide-comparison__table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 22px;
  background: #ffffff;
  box-shadow:
    0 20px 55px rgba(28, 53, 31, 0.07),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
  scrollbar-color:
    rgba(55, 101, 58, 0.35)
    rgba(55, 101, 58, 0.08);
}

.guide-comparison__table-wrap:focus-visible {
  outline: 3px solid rgba(69, 122, 65, 0.35);
  outline-offset: 4px;
}


/* ==========================================================================
   Table foundations
   ========================================================================== */

.guide-comparison__table {
  width: 100%;
  min-width: 1120px;
  border-collapse: collapse;
  table-layout: fixed;
}

.guide-comparison__table caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.guide-comparison__table th,
.guide-comparison__table td {
  padding: 24px 22px;
  border-bottom: 1px solid rgba(39, 72, 43, 0.1);
  vertical-align: top;
  text-align: left;
}

.guide-comparison__table thead th {
  color: rgba(255, 255, 255, 0.78);
  background:
    linear-gradient(
      135deg,
      #173c22 0%,
      #0b2d19 100%
    );
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

.guide-comparison__table thead th:first-child {
  width: 22%;
}

.guide-comparison__table thead th:nth-child(2) {
  width: 14%;
}

.guide-comparison__table thead th:nth-child(3) {
  width: 24%;
}

.guide-comparison__table thead th:nth-child(4) {
  width: 23%;
}

.guide-comparison__table thead th:last-child {
  width: 17%;
}

.guide-comparison__table tbody tr:last-child th,
.guide-comparison__table tbody tr:last-child td {
  border-bottom: 0;
}

.guide-comparison__table tbody tr {
  transition: background 180ms ease;
}

.guide-comparison__table tbody tr:hover {
  background: #f7faf5;
}

.guide-comparison__table tbody th {
  color: var(--color-ink);
  font-weight: 700;
}

.guide-comparison__table tbody td {
  color: var(--color-text-muted);
  font-size: 0.80rem;
  line-height: 1.58;
}


/* ==========================================================================
   Application cells
   ========================================================================== */

.guide-comparison__application {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
}

.guide-comparison__application > span:last-child {
  display: grid;
  gap: 5px;
}

.guide-comparison__application strong {
  color: var(--color-ink);
  font-size: 0.84rem;
  line-height: 1.35;
}

.guide-comparison__application small {
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.4;
}

.guide-comparison__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eaf3e5;
}

.guide-comparison__icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}


/* ==========================================================================
   Range and internal links
   ========================================================================== */

.guide-comparison__range {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  color: var(--color-green-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 1.15;
}

.guide-comparison__range > span {
  display: block;
  font-size: 1.05rem;
  line-height: 1.2;
}

.guide-comparison__range > small {
  display: block;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: 0.76rem;
  font-weight: 400;
  line-height: 1.35;
}


.guide-comparison__table td a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--color-green-dark);
  font-size: 0.78rem;
  font-weight: 780;
  line-height: 1.45;
  text-decoration: none;
}

.guide-comparison__table td a span {
  font-size: 0.95rem;
  transition: transform 180ms ease;
}

.guide-comparison__table td a:hover span {
  transform: translateX(4px);
}


/* ==========================================================================
   Context notes
   ========================================================================== */

.guide-comparison__notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
  margin-top: 22px;
}

.guide-comparison__notes article {
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  padding: 21px 20px;
  border: 1px solid rgba(39, 72, 43, 0.11);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.78);
}

.guide-comparison__note-number {
  display: grid;
  place-items: center;
  width: 33px;
  height: 33px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eaf3e5;
  font-size: 0.58rem;
  font-weight: 850;
}

.guide-comparison__notes strong {
  color: var(--color-ink);
  font-size: 0.80rem;
  line-height: 1.45;
}

.guide-comparison__notes p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.80rem;
  line-height: 1.58;
}


/* ==========================================================================
   Comparison responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-comparison {
    padding: 62px 0 68px;
  }

  .guide-comparison__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-comparison__header > .section-summary {
    max-width: 620px;
  }

  .guide-comparison__notes {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .guide-comparison {
    padding: 50px 0 56px;
  }

  .guide-comparison__header {
    margin-bottom: 32px;
  }

  .guide-comparison__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-comparison__table-wrap {
    border-radius: 17px;
  }

  .guide-comparison__table {
    min-width: 980px;
  }

  .guide-comparison__table th,
  .guide-comparison__table td {
    padding: 20px 17px;
  }

  .guide-comparison__range {
    gap: 3px;
  }

  .guide-comparison__range > span {
    font-size: 1rem;
  }

  .guide-comparison__range > small {
    font-size: 0.65rem;
  }
}


/* ==========================================================================
   06. COMMON BUYING MISTAKES — RECOMMENDED
   Practical problem-and-solution guidance.
   ========================================================================== */

.guide-mistakes {
  position: relative;
  padding: 78px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 8% 12%,
      rgba(126, 168, 105, 0.11),
      transparent 27rem
    ),
    #ffffff;
}

.guide-mistakes__inner {
  margin-inline: auto;
}


/* ==========================================================================
   Mistakes header
   ========================================================================== */

.guide-mistakes__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 42px;
}

.guide-mistakes__header h2 {
  max-width: 810px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-mistakes__header > .section-summary {
  max-width: 560px;
}


/* ==========================================================================
   Mistakes grid
   ========================================================================== */

.guide-mistakes__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.guide-mistake-card {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  padding: 27px 27px 25px;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 19px;
  background:
    linear-gradient(
      180deg,
      #ffffff 0%,
      #fafcf9 100%
    );
  box-shadow:
    0 16px 42px rgba(28, 52, 31, 0.055),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  transition:
    transform 210ms ease,
    border-color 210ms ease,
    box-shadow 210ms ease;
}

.guide-mistake-card:hover {
  transform: translateY(-3px);
  border-color: rgba(53, 100, 56, 0.23);
  box-shadow:
    0 23px 50px rgba(28, 52, 31, 0.085),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
}

.guide-mistake-card--wide {
  grid-column: 1 / -1;
  min-height: 0;
}


/* ==========================================================================
   Card heading
   ========================================================================== */

.guide-mistake-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 17px;
}

.guide-mistake-card__number {
  display: grid;
  place-items: center;
  width: 39px;
  height: 39px;
  flex: 0 0 39px;
  border-radius: 50%;
  color: #a14336;
  background: #f8e9e6;
  font-size: 0.61rem;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.guide-mistake-card__status {
  color: rgba(124, 53, 44, 0.72);
  font-size: 0.57rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.guide-mistake-card h3 {
  max-width: 650px;
  margin: 27px 0 0;
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 2.5vw, 2.3rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.guide-mistake-card > p {
  max-width: 700px;
  margin: 18px 0 0;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.7;
}


/* ==========================================================================
   Practical correction
   ========================================================================== */

.guide-mistake-card__solution {
  display: grid;
  grid-template-columns: 37px minmax(0, 1fr);
  align-items: start;
  gap: 13px;
  margin-top: 28px;
  padding-top: 23px;
}

.guide-mistake-card__solution > span {
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eaf3e5;
}

.guide-mistake-card__solution svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-mistake-card__solution p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.guide-mistake-card__solution strong {
  color: var(--color-green-deep);
}


/* ==========================================================================
   Final takeaway
   ========================================================================== */

.guide-mistakes__takeaway {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  align-items: center;
  gap: 19px;
  max-width: 950px;
  margin: 27px auto 0;
  padding: 23px 27px;
  border: 1px solid rgba(54, 99, 56, 0.14);
  border-radius: 17px;
  background: #edf5e9;
}

.guide-mistakes__takeaway-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: rgba(255, 255, 255, 0.74);
}

.guide-mistakes__takeaway-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-mistakes__takeaway p {
  max-width: 780px;
  margin: 8px 0 0;
  color: var(--color-green-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.05rem, 1.8vw, 1.42rem);
  line-height: 1.45;
}


/* ==========================================================================
   Common Mistakes responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-mistakes {
    padding: 62px 0 68px;
  }

  .guide-mistakes__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-mistakes__header > .section-summary {
    max-width: 620px;
  }
}

@media (max-width: 680px) {
  .guide-mistakes {
    padding: 50px 0 56px;
  }

  .guide-mistakes__header {
    margin-bottom: 32px;
  }

  .guide-mistakes__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-mistakes__grid {
    grid-template-columns: 1fr;
  }

  .guide-mistake-card,
  .guide-mistake-card--wide {
    grid-column: auto;
    width: 100%;
    min-height: 0;
    height: auto;
    align-self: start;
    padding: 22px 20px 21px;
  }

  .guide-mistake-card h3 {
    margin-top: 22px;
  }

  .guide-mistake-card__solution {
    margin-top: 23px;
    padding-top: 19px;
  }

  .guide-mistakes__takeaway {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 22px 20px;
  }
}


/* ==========================================================================
   Hero responsive adjustments
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tablet — up to 1050px
   -------------------------------------------------------------------------- */

@media (max-width: 1050px) {
  .guide-hero {
    padding: 26px 0 58px;
  }

  .guide-hero__layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .guide-hero__content {
    max-width: 820px;
  }

  .guide-hero__visual {
    max-width: 860px;
  }

  .guide-hero__image {
    min-height: 420px;
  }
}

/* --------------------------------------------------------------------------
   Mobile — up to 680px
   -------------------------------------------------------------------------- */

@media (max-width: 680px) {
  .guide-hero {
    padding: 20px 0 44px;
  }

  .guide-hero__breadcrumb {
    margin-bottom: 24px;
  }

  .guide-hero__brand-mark {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .guide-hero__type {
    margin-top: 28px;
  }

  .guide-hero h1 {
    margin-top: 20px;
    font-size: clamp(2.85rem, 14vw, 4.3rem);
    line-height: 0.96;
  }

  .guide-hero__lead {
    margin-top: 22px;
    font-size: 0.94rem;
    line-height: 1.7;
  }

  .guide-hero__meta {
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 29px;
    padding-top: 0;
    border-top: 0;
  }

  .guide-hero__meta > div {
    padding: 15px 0;
    border-top: 1px solid rgba(32, 58, 36, 0.1);
  }

  .guide-hero__meta > div + div {
    padding-left: 0;
    border-left: 0;
  }

  .guide-hero__visual {
    width: 100%;
    padding: 8px;
    border-radius: 22px;
  }

  .guide-hero__image {
    min-height: 0;
    border-radius: 16px;
  }

  .guide-hero__visual-details {
    grid-template-columns: 1fr;
    padding: 8px 6px 5px;
  }

  .guide-hero__visual-details > span {
    padding: 12px 8px;
  }

  .guide-hero__visual-details > span + span {
    border-top: 1px solid rgba(35, 66, 38, 0.1);
    border-left: 0;
  }

  .guide-hero__contents {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 34px;
    padding: 21px 20px;
  }

  .guide-hero__contents > strong {
    white-space: normal;
  }

  .guide-hero__contents ul {
    display: grid;
    gap: 11px;
  }
}

/* ==========================================================================
   Hero accessibility and reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .guide-hero *,
  .guide-hero *::before,
  .guide-hero *::after {
    scroll-behavior: auto;
    transition: none;
  }
}


/* ==========================================================================
   07. RECOMMENDED LIGHTING CATEGORIES — REQUIRED
   Editorial category navigation for Greenlytes Lab guides.
   ========================================================================== */

.guide-categories {
  position: relative;
  padding: 78px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 92% 8%,
      rgba(122, 168, 100, 0.12),
      transparent 30rem
    ),
    #f6f8f4;
}

.guide-categories__inner {
  margin-inline: auto;
}


/* ==========================================================================
   Categories header
   ========================================================================== */

.guide-categories__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 42px;
}

.guide-categories__header h2 {
  max-width: 800px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-categories__header > .section-summary {
  max-width: 570px;
}


/* ==========================================================================
   Category grid
   ========================================================================== */

.guide-categories__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px;
}

.guide-category-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 21px;
  background: #ffffff;
  box-shadow:
    0 17px 45px rgba(27, 51, 30, 0.065),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.guide-category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(53, 100, 56, 0.24);
  box-shadow:
    0 25px 55px rgba(27, 51, 30, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
}

.guide-category-card__link {
  display: grid;
  height: 100%;
  color: inherit;
  text-decoration: none;
}


/* ==========================================================================
   Category image
   ========================================================================== */

.guide-category-card__image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #dce5d7;
}

.guide-category-card__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
}

.guide-category-card:hover .guide-category-card__image img {
  transform: scale(1.035);
}

.guide-category-card__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      180deg,
      rgba(7, 20, 11, 0.02) 38%,
      rgba(7, 20, 11, 0.48) 100%
    );
}

.guide-category-card__number {
  position: absolute;
  right: 18px;
  bottom: 17px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  color: #ffffff;
  background: rgba(12, 42, 20, 0.58);
  backdrop-filter: blur(9px);
  font-size: 0.61rem;
  font-weight: 850;
  letter-spacing: 0.05em;
}


/* ==========================================================================
   Category content
   ========================================================================== */

.guide-category-card__content {
  display: flex;
  min-height: 255px;
  flex-direction: column;
  padding: 25px 26px 23px;
}

.guide-category-card__use {
  color: var(--color-green-dark);
  font-size: 0.6rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  line-height: 1.4;
  text-transform: uppercase;
}

.guide-category-card h3 {
  margin: 14px 0 0;
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.65rem, 2.6vw, 2.4rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.guide-category-card p {
  max-width: 610px;
  margin: 17px 0 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.65;
}

.guide-category-card__cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid rgba(39, 72, 43, 0.1);
  color: var(--color-green-dark);
  font-size: 0.80rem;
  font-weight: 800;
}

.guide-category-card__cta > span {
  font-size: 1.05rem;
  transition: transform 180ms ease;
}

.guide-category-card:hover .guide-category-card__cta > span {
  transform: translateX(4px);
}


/* ==========================================================================
   Category guidance note
   ========================================================================== */

.guide-categories__note {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  align-items: center;
  gap: 19px;
  max-width: 930px;
  margin: 27px auto 0;
  padding: 23px 27px;
  border: 1px solid rgba(54, 99, 56, 0.14);
  border-radius: 17px;
  background: #eaf3e5;
}

.guide-categories__note-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: rgba(255, 255, 255, 0.74);
}

.guide-categories__note-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-categories__note p {
  max-width: 780px;
  margin: 8px 0 0;
  color: var(--color-green-deep);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.02rem, 1.7vw, 1.35rem);
  line-height: 1.45;
}


/* ==========================================================================
   Categories responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-categories {
    padding: 62px 0 68px;
  }

  .guide-categories__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-categories__header > .section-summary {
    max-width: 620px;
  }
}

@media (max-width: 680px) {
  .guide-categories {
    padding: 50px 0 56px;
  }

  .guide-categories__header {
    margin-bottom: 32px;
  }

  .guide-categories__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-categories__grid {
    grid-template-columns: 1fr;
  }

  .guide-category-card__content {
    min-height: 0;
    padding: 22px 20px 20px;
  }

  .guide-category-card__image {
    aspect-ratio: 4 / 3;
  }

  .guide-categories__note {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 22px 20px;
  }
}


/* ==========================================================================
   08. GUIDE FAQ — REQUIRED
   Accessible native accordion with visible HTML answers.
   ========================================================================== */

.guide-faq {
  position: relative;
  padding: 78px 0 84px;
  overflow: visible;
  background:
    radial-gradient(
      circle at 8% 10%,
      rgba(125, 169, 103, 0.1),
      transparent 29rem
    ),
    #ffffff;
}

.guide-faq__inner {
  margin-inline: auto;
}


/* ==========================================================================
   FAQ header
   ========================================================================== */

.guide-faq__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 43px;
}

.guide-faq__header h2 {
  max-width: 820px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-faq__header > .section-summary {
  max-width: 570px;
}


/* ==========================================================================
   FAQ layout
   ========================================================================== */

.guide-faq__layout {
  display: grid;
  grid-template-columns:
    minmax(260px, 0.34fr)
    minmax(0, 0.66fr);
  align-items: start;
  gap: clamp(36px, 5vw, 76px);
}


/* ==========================================================================
   Intro card
   ========================================================================== */

.guide-faq__intro-card {
  position: sticky;
  top: 110px;
  align-self: start;
  height: fit-content;
  overflow: hidden;
  border: 1px solid rgba(51, 96, 53, 0.14);
  border-radius: 21px;
  color: #ffffff;
  background:
    radial-gradient(
      circle at 85% 10%,
      rgba(144, 198, 119, 0.2),
      transparent 15rem
    ),
    linear-gradient(
      145deg,
      #173c22 0%,
      #082816 100%
    );
  box-shadow: 0 22px 55px rgba(19, 52, 25, 0.14);
}


.guide-faq__intro-number {
  display: block;
  padding: 23px 25px 0;
  color: rgba(185, 217, 172, 0.72);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.guide-faq__intro-card > div {
  padding: 48px 27px 27px;
}

.guide-faq__intro-card .eyebrow {
  color: #b9d9ac;
}

.guide-faq__intro-card h3 {
  margin: 15px 0 0;
  color: #ffffff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.75rem, 2.8vw, 2.6rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.guide-faq__intro-card p {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.84rem;
  line-height: 1.7;
}

.guide-faq__intro-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 31px;
  padding-top: 19px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  color: #ffffff;
  font-size: 0.80rem;
  font-weight: 800;
  text-decoration: none;
}

.guide-faq__intro-card a span {
  font-size: 1rem;
  transition: transform 180ms ease;
}

.guide-faq__intro-card a:hover span {
  transform: translateY(-3px);
}


/* ==========================================================================
   FAQ list
   ========================================================================== */

.guide-faq__list {
  display: grid;
  gap: 11px;
}

.guide-faq__item {
  overflow: hidden;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 16px;
  background: #fbfcfa;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.guide-faq__item[open] {
  border-color: rgba(52, 99, 55, 0.22);
  background: #ffffff;
  box-shadow: 0 15px 38px rgba(28, 52, 31, 0.055);
}

.guide-faq__item summary {
  display: grid;
  grid-template-columns: 37px minmax(0, 1fr) 34px;
  align-items: center;
  gap: 16px;
  padding: 21px 22px;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}

.guide-faq__item summary::-webkit-details-marker {
  display: none;
}

.guide-faq__item summary:focus-visible {
  outline: 3px solid rgba(72, 126, 67, 0.35);
  outline-offset: -3px;
}

.guide-faq__question-number {
  display: grid;
  place-items: center;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  color: var(--color-green-dark);
  background: #eaf3e5;
  font-size: 0.59rem;
  font-weight: 850;
}

.guide-faq__item summary > span:nth-child(2) {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  line-height: 1.35;
}


/* ==========================================================================
   Plus and minus control
   ========================================================================== */

.guide-faq__toggle {
  position: relative;
  display: block;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(42, 79, 45, 0.12);
  border-radius: 50%;
  background: #f1f6ee;
}

.guide-faq__toggle::before,
.guide-faq__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 1.5px;
  border-radius: 999px;
  background: var(--color-green-dark);
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.guide-faq__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.guide-faq__item[open] .guide-faq__toggle::after {
  transform: translate(-50%, -50%) rotate(0deg);
}


/* ==========================================================================
   FAQ answers
   ========================================================================== */

.guide-faq__answer {
  padding:
    0
    73px
    24px
    75px;
}

.guide-faq__answer p {
  max-width: 720px;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.72;
}

.guide-faq__answer p + p {
  margin-top: 13px;
}

.guide-faq__answer a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 17px;
  color: var(--color-green-dark);
  font-size: 0.80rem;
  font-weight: 800;
  text-decoration: none;
}

.guide-faq__answer a span {
  transition: transform 180ms ease;
}

.guide-faq__answer a:hover span {
  transform: translateX(4px);
}


/* ==========================================================================
   FAQ responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-faq {
    padding: 62px 0 68px;
  }

  .guide-faq__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-faq__header > .section-summary {
    max-width: 620px;
  }

  .guide-faq__layout {
    grid-template-columns: 1fr;
    gap: 29px;
  }

  .guide-faq__intro-card {
    position: static;
  }

  .guide-faq__intro-card > div {
    padding-top: 30px;
  }
}

@media (max-width: 680px) {
  .guide-faq {
    padding: 50px 0 56px;
  }

  .guide-faq__header {
    margin-bottom: 32px;
  }

  .guide-faq__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-faq__item summary {
    grid-template-columns: 34px minmax(0, 1fr) 31px;
    gap: 12px;
    padding: 18px 16px;
  }

  .guide-faq__question-number {
    width: 32px;
    height: 32px;
  }

  .guide-faq__toggle {
    width: 29px;
    height: 29px;
  }

  .guide-faq__answer {
    padding:
      0
      17px
      21px
      62px;
  }
}


/* ==========================================================================
   09. RELATED GUIDES — RECOMMENDED
   Internal links to closely related Greenlytes Lab content.
   ========================================================================== */

.guide-related {
  position: relative;
  padding: 78px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 92% 10%,
      rgba(121, 166, 100, 0.11),
      transparent 29rem
    ),
    #f6f8f4;
}

.guide-related__inner {
  margin-inline: auto;
}


/* ==========================================================================
   Related Guides header
   ========================================================================== */

.guide-related__header {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(300px, 0.85fr);
  align-items: end;
  gap: clamp(44px, 7vw, 105px);
  margin-bottom: 42px;
}

.guide-related__header h2 {
  max-width: 820px;
  margin: 15px 0 0;
  color: var(--color-ink);
  font-size: clamp(2.65rem, 4.5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.guide-related__header > .section-summary {
  max-width: 570px;
}


/* ==========================================================================
   Related Guides grid
   ========================================================================== */

.guide-related__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}

.guide-related-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(39, 72, 43, 0.12);
  border-radius: 20px;
  background: #ffffff;
  box-shadow:
    0 16px 42px rgba(28, 52, 31, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.guide-related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(53, 100, 56, 0.23);
  box-shadow:
    0 24px 52px rgba(28, 52, 31, 0.095),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
}

.guide-related-card__link {
  display: grid;
  height: 100%;
  color: inherit;
  text-decoration: none;
}


/* ==========================================================================
   Related Guide image
   ========================================================================== */

.guide-related-card__image {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: #dce5d7;
}

.guide-related-card__image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
}

.guide-related-card:hover .guide-related-card__image img {
  transform: scale(1.04);
}

.guide-related-card__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      180deg,
      rgba(7, 20, 11, 0.02) 35%,
      rgba(7, 20, 11, 0.52) 100%
    );
}

.guide-related-card__type {
  position: absolute;
  left: 17px;
  bottom: 16px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  color: #ffffff;
  background: rgba(11, 42, 19, 0.58);
  backdrop-filter: blur(8px);
  font-size: 0.56rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}


/* ==========================================================================
   Related Guide content
   ========================================================================== */

.guide-related-card__content {
  display: flex;
  min-height: 285px;
  flex-direction: column;
  padding: 23px 23px 21px;
}

.guide-related-card__number {
  color: var(--color-green-dark);
  font-size: 0.59rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.guide-related-card h3 {
  margin: 16px 0 0;
  color: var(--color-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.42rem, 2.1vw, 1.95rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.guide-related-card p {
  margin: 17px 0 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.65;
}

.guide-related-card__cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: auto;
  padding-top: 19px;
  border-top: 1px solid rgba(39, 72, 43, 0.1);
  color: var(--color-green-dark);
  font-size: 0.80rem;
  font-weight: 800;
}

.guide-related-card__cta > span {
  font-size: 1rem;
  transition: transform 180ms ease;
}

.guide-related-card:hover .guide-related-card__cta > span {
  transform: translateX(4px);
}


/* ==========================================================================
   Related Guides responsive adjustments
   ========================================================================== */

@media (max-width: 1050px) {
  .guide-related {
    padding: 62px 0 68px;
  }

  .guide-related__header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
  }

  .guide-related__header > .section-summary {
    max-width: 620px;
  }

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

@media (max-width: 680px) {
  .guide-related {
    padding: 50px 0 56px;
  }

  .guide-related__header {
    margin-bottom: 32px;
  }

  .guide-related__header h2 {
    font-size: clamp(2.3rem, 11vw, 3.35rem);
  }

  .guide-related__grid {
    grid-template-columns: 1fr;
  }

  .guide-related-card__content {
    min-height: 0;
    padding: 21px 20px 20px;
  }
}