.mining-blog-intro {
  padding: 68px 0 72px;
  background: #f2f6fb;
  border-bottom: 1px solid #d9e2ed;
}

/* Expandable mining blog library and original article pages. */
.mining-blog-latest {
  padding: 54px 0 18px;
}

.mining-blog-featured {
  position: relative;
  display: block;
  overflow: hidden;
  margin-top: 24px;
  border: 1px solid #d9e2ef;
  border-left: 6px solid #f8b918;
  border-radius: 10px;
  padding: clamp(24px, 4vw, 42px);
  background: linear-gradient(120deg, #061833, #0b3470);
  color: #fff;
  box-shadow: 0 18px 44px rgba(4, 28, 64, 0.16);
}

.mining-blog-featured span,
.mining-blog-featured strong {
  color: #f8b918;
  font-weight: 800;
}

.mining-blog-featured h3 {
  max-width: 920px;
  margin: 10px 0 12px;
  color: #fff;
  font-size: clamp(1.55rem, 2.5vw, 2.45rem);
  line-height: 1.25;
}

.mining-blog-featured p {
  max-width: 940px;
  margin-bottom: 16px;
  color: rgba(255,255,255,.82);
  line-height: 1.75;
}

.mining-article-hero .container {
  max-width: 1180px;
}

.mining-article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(32px, 5vw, 70px);
  align-items: start;
}

.mining-article-content {
  min-width: 0;
}

.mining-article-meta {
  margin-bottom: 14px;
  color: #56657a;
  font-size: .9rem;
}

.mining-article-lead {
  border-left: 5px solid #f8b918;
  padding: 18px 22px;
  background: #fff;
  color: #13243d;
  font-size: 1.08rem;
  line-height: 1.8;
}

.mining-article-overview,
.mining-article-section,
.mining-article-table,
.mining-article-mistakes,
.mining-article-checklist {
  margin-top: 42px;
}

.mining-article-content h2 {
  margin-bottom: 16px;
  color: #061833;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.35;
}

.mining-article-content p,
.mining-article-content li,
.mining-article-content td,
.mining-article-content th {
  line-height: 1.78;
}

.mining-article-overview > div,
.mining-article-mistakes > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.mining-article-overview article,
.mining-article-mistakes article {
  border: 1px solid #d9e2ef;
  border-radius: 8px;
  padding: 20px;
  background: #fff;
}

.mining-article-overview span,
.mining-article-mistakes span,
.article-section-number {
  color: #0752ad;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.mining-article-conclusion {
  margin-top: 30px;
  border-radius: 8px;
  padding: 24px;
  background: #061833;
  color: #fff;
}

.mining-article-conclusion strong {
  color: #f8b918;
}

.mining-article-conclusion p {
  margin: 8px 0 0;
  color: rgba(255,255,255,.86);
}

.mining-article-section {
  border-top: 1px solid #d9e2ef;
  padding-top: 34px;
}

.mining-article-section ul,
.mining-article-checklist ul {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.mining-article-section li,
.mining-article-checklist li {
  position: relative;
  padding-left: 24px;
}

.mining-article-section li::before,
.mining-article-checklist li::before {
  position: absolute;
  left: 0;
  color: #f1a900;
  content: "✓";
  font-weight: 900;
}

.mining-article-table > div {
  overflow-x: auto;
}

.mining-article-table table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.mining-article-table th,
.mining-article-table td {
  border: 1px solid #d9e2ef;
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
}

.mining-article-table th {
  width: 26%;
  background: #edf4fc;
  color: #061833;
}

.mining-article-mistakes h3 {
  margin: 8px 0;
  color: #061833;
  font-size: 1rem;
}

.mining-article-side {
  position: sticky;
  top: 94px;
  display: grid;
  gap: 16px;
}

.mining-article-side > div {
  display: grid;
  gap: 10px;
  border: 1px solid #d9e2ef;
  border-radius: 8px;
  padding: 20px;
  background: #fff;
}

.mining-article-side ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.mining-article-side a:not(.button) {
  color: #0752ad;
  line-height: 1.5;
}

.mining-article-side .button {
  width: 100%;
  margin-top: 4px;
  text-align: center;
}

.mining-article-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-radius: 10px;
  padding: clamp(24px, 4vw, 38px);
  background: #061833;
  color: #fff;
}

.mining-article-cta h2 { color: #fff; }
.mining-article-cta p { max-width: 760px; color: rgba(255,255,255,.8); }
.mining-article-cta > div:last-child { display: flex; flex-wrap: wrap; gap: 10px; }

@media (max-width: 980px) {
  .mining-article-layout { grid-template-columns: 1fr; }
  .mining-article-side { position: static; grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 700px) {
  .mining-blog-latest { padding-top: 40px; }
  .mining-article-overview > div,
  .mining-article-mistakes > div,
  .mining-article-side { grid-template-columns: 1fr; }
  .mining-article-cta { align-items: stretch; flex-direction: column; }
  .mining-article-cta .button { width: 100%; }
}

/* Mining blog library v2: scalable category navigation and article cards. */
.mining-blog-library-shell {
  padding: 72px 0 84px;
  background: #f2f6fb;
}

.mining-blog-library-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: start;
}

.mining-blog-category-nav > div {
  position: sticky;
  top: 104px;
  border-top: 5px solid #f8b918;
  padding: 22px;
  background: #061833;
  color: #fff;
}

.mining-blog-category-nav .eyebrow { color: #f8b918; }
.mining-blog-category-nav p { color: rgba(255,255,255,.72); line-height: 1.6; }
.mining-blog-category-nav nav { display: grid; gap: 3px; margin-top: 20px; }
.mining-blog-category-nav nav a {
  border-bottom: 1px solid rgba(255,255,255,.12);
  padding: 11px 0;
  color: #fff;
  font-size: .92rem;
  font-weight: 700;
}

.mining-blog-category-section {
  scroll-margin-top: 112px;
  border-bottom: 1px solid #d4dfec;
  padding: 0 0 54px;
  margin-bottom: 54px;
}
.mining-blog-category-section:last-child { margin-bottom: 0; border-bottom: 0; padding-bottom: 0; }
.mining-blog-category-heading { margin-bottom: 22px; }
.mining-blog-category-heading span { color: #0752ad; font-weight: 900; letter-spacing: .08em; }
.mining-blog-category-heading h2 { margin: 6px 0 8px; color: #061833; font-size: clamp(1.65rem,2.3vw,2.35rem); }
.mining-blog-category-heading p { max-width: 820px; color: #56657a; line-height: 1.7; }
.mining-blog-card-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.mining-blog-article-card {
  display: flex;
  min-width: 0;
  min-height: 230px;
  flex-direction: column;
  border: 1px solid #d6e0eb;
  border-radius: 8px;
  padding: 24px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(5,31,67,.07);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.mining-blog-article-card:hover { transform: translateY(-3px); border-color: #8fb2dd; box-shadow: 0 16px 32px rgba(5,31,67,.12); }
.mining-blog-article-card span { color: #0752ad; font-size: .78rem; font-weight: 900; letter-spacing: .04em; text-transform: uppercase; }
.mining-blog-article-card h3 { margin: 10px 0; color: #061833; font-size: 1.2rem; line-height: 1.38; }
.mining-blog-article-card p { margin-bottom: 18px; color: #58677a; line-height: 1.65; }
.mining-blog-article-card strong { margin-top: auto; color: #0752ad; }
.mining-blog-original-card { border-left: 5px solid #f8b918; background: linear-gradient(145deg,#fff,#f8fbff); }
.mining-blog-original-card span { color: #8d5a00; }

@media (max-width: 980px) {
  .mining-blog-library-layout { grid-template-columns: 1fr; }
  .mining-blog-category-nav > div { position: static; }
  .mining-blog-category-nav nav { grid-template-columns: repeat(2,minmax(0,1fr)); column-gap: 24px; }
}

@media (max-width: 650px) {
  .mining-blog-library-shell { padding: 54px 0 64px; }
  .mining-blog-category-nav nav,
  .mining-blog-card-grid { grid-template-columns: 1fr; }
  .mining-blog-article-card { min-height: 0; }
  .mining-blog-category-section { margin-bottom: 42px; padding-bottom: 42px; }
}

.mining-blog-intro .section-heading {
  max-width: 1040px;
  margin-bottom: 28px;
}

.mining-blog-paths {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.mining-blog-path {
  display: flex;
  min-width: 0;
  min-height: 218px;
  flex-direction: column;
  padding: 23px;
  color: #10243f;
  background: #fff;
  border: 1px solid #d5dfeb;
  border-top: 4px solid #0755c9;
  border-radius: 7px;
  box-shadow: 0 14px 32px rgba(8, 35, 71, 0.06);
}

.mining-blog-path > span {
  color: #0755c9;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.mining-blog-path h2 {
  margin: 12px 0 9px;
  color: #07182f;
  font-size: 1.18rem;
  line-height: 1.35;
}

.mining-blog-path p {
  margin: 0 0 18px;
  color: #586b82;
  font-size: 0.92rem;
  line-height: 1.65;
}

.mining-blog-path strong {
  margin-top: auto;
  color: #0755c9;
  font-size: 0.88rem;
}

.mining-blog-library {
  padding: 76px 0 84px;
  background: #fff;
}

.mining-blog-topic {
  display: grid;
  grid-template-columns: minmax(235px, 0.72fr) minmax(0, 2.28fr);
  gap: 38px;
  padding: 44px 0;
  border-top: 1px solid #d8e1eb;
  scroll-margin-top: 92px;
}

.mining-blog-topic:first-child {
  padding-top: 0;
  border-top: 0;
}

.mining-blog-topic__heading span {
  color: #0755c9;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.mining-blog-topic__heading h2 {
  margin: 12px 0;
  color: #07182f;
  font-size: clamp(1.55rem, 2.15vw, 2.25rem);
  line-height: 1.22;
}

.mining-blog-topic__heading p {
  color: #5b6e84;
  line-height: 1.72;
}

.mining-blog-topic__heading .button {
  margin-top: 20px;
}

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

.mining-blog-entry {
  display: grid;
  min-width: 0;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 22px;
  color: #10243f;
  background: #f7f9fc;
  border: 1px solid #dce4ee;
  border-radius: 7px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.mining-blog-entry:hover,
.mining-blog-entry:focus-visible {
  border-color: #0755c9;
  box-shadow: 0 14px 30px rgba(7, 57, 125, 0.1);
  transform: translateY(-2px);
}

.mining-blog-entry__number {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #07182f;
  background: #f7b916;
  border-radius: 999px;
  font-size: 0.77rem;
  font-weight: 900;
}

.mining-blog-entry__copy {
  min-width: 0;
}

.mining-blog-entry__copy > span {
  color: #0755c9;
  font-size: 0.74rem;
  font-weight: 900;
}

.mining-blog-entry h3 {
  margin: 7px 0 8px;
  color: #0a1b33;
  font-size: 1.02rem;
  line-height: 1.42;
}

.mining-blog-entry p {
  margin: 0;
  color: #5b6e84;
  font-size: 0.88rem;
  line-height: 1.62;
}

.mining-blog-entry em {
  display: block;
  margin-top: 13px;
  color: #0755c9;
  font-size: 0.82rem;
  font-style: normal;
  font-weight: 900;
}

.mining-blog-contact {
  padding: 58px 0;
  color: #fff;
  background: linear-gradient(125deg, #001733, #063b83);
  border-top: 5px solid #f7b916;
}

.mining-blog-contact__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.mining-blog-contact h2 {
  margin-bottom: 10px;
  color: #fff;
  font-size: clamp(1.55rem, 2.2vw, 2.35rem);
}

.mining-blog-contact p {
  max-width: 850px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
}

.mining-blog-contact .button {
  flex: 0 0 auto;
}

@media (max-width: 1080px) {
  .mining-blog-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mining-blog-topic {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 700px) {
  .mining-blog-intro,
  .mining-blog-library {
    padding: 50px 0 56px;
  }

  .mining-blog-paths,
  .mining-blog-grid {
    grid-template-columns: 1fr;
  }

  .mining-blog-path {
    min-height: 0;
  }

  .mining-blog-topic {
    padding: 36px 0;
  }

  .mining-blog-entry {
    padding: 19px;
  }

  .mining-blog-contact__inner {
    align-items: stretch;
    flex-direction: column;
  }

  .mining-blog-contact .button {
    width: 100%;
  }
}