.hd-source-page,
.hd-source-page * {
  box-sizing: border-box;
}

.hd-source-page {
  width: 100%;
  min-width: 0;
  max-width: none !important;
  display: block !important;
  gap: 0 !important;
  padding: 0 0 64px !important;
  background: var(--hd-paper);
  color: var(--hd-ink);
  font-family: "Montserrat", system-ui, sans-serif;
  line-height: 1.6;
}

.hd-source-page > .e-con-inner {
  width: 100%;
  max-width: none;
  display: block;
  gap: 0;
  padding: 0;
}

.hd-source-page .elementor-widget {
  min-width: 0;
  margin: 0;
}

.hd-source-page a {
  color: inherit;
}

.hd-source-shell {
  width: min(calc(100% - 48px), 1180px);
  min-width: 0;
  margin-inline: auto;
}

.hd-source-breadcrumb-wrap {
  padding-top: 34px;
}

.hd-source-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--hd-secondary);
  font-size: 0.78rem;
}

.hd-source-breadcrumb a {
  color: var(--hd-ink);
  font-weight: 650;
  text-decoration: none;
}

.hd-microtitle {
  margin: 0;
  color: var(--hd-pink-text);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hd-source-page h1,
.hd-source-page h2,
.hd-source-page h3 {
  color: var(--hd-ink);
  font-family: inherit;
  text-wrap: balance;
}

.hd-source-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  align-items: stretch;
  gap: 18px;
  margin-top: 32px;
}

.hd-source-hero-copy,
.hd-source-library-card,
.hd-source-method,
.hd-source-library,
.hd-source-related {
  border: 1px solid var(--hd-line);
  border-radius: 30px;
  background: var(--hd-white);
}

.hd-source-hero-copy {
  padding: clamp(28px, 5vw, 48px);
}

.hd-source-hero h1 {
  max-width: 13ch;
  margin: 9px 0 0;
  font-size: clamp(2.35rem, 4.8vw, 3.5rem);
  line-height: 0.98;
  letter-spacing: -0.052em;
}

.hd-short-answer {
  margin-top: 14px;
  padding: 10px 14px;
  border: 1px solid #e7ebeb;
  border-radius: 10px;
  background: var(--hd-soft);
}

.hd-short-answer small {
  display: block;
  color: var(--hd-secondary);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hd-short-answer p {
  margin: 2px 0 0;
  color: #3e4b50;
  font-size: 0.875rem;
  line-height: 1.5;
}

.hd-source-introduction {
  max-width: 64ch;
  margin: 18px 0 0;
  color: var(--hd-secondary);
  font-size: 1rem;
}

.hd-source-library-card {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(26px, 4vw, 40px);
  background:
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    var(--hd-ink);
  background-size: 34px 34px;
  color: var(--hd-white);
}

.hd-source-library-card > p {
  margin: 0;
  color: var(--hd-gold);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hd-source-library-card > strong {
  max-width: 13ch;
  margin-top: 70px;
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.hd-source-library-card dl {
  display: grid;
  gap: 8px;
  margin: 30px 0 0;
}

.hd-source-library-card dl div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 9px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hd-source-library-card dt {
  font-size: 0.78rem;
  font-weight: 800;
}

.hd-source-library-card dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
}

.hd-source-method,
.hd-source-library,
.hd-source-related {
  margin-top: 48px;
  padding: clamp(24px, 4vw, 40px);
}

.hd-source-method,
.hd-source-related {
  background: var(--hd-paper);
}

.hd-source-section-heading h2 {
  margin: 6px 0 0;
  font-size: clamp(1.85rem, 4vw, 2.6rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hd-source-section-heading > p:not(.hd-microtitle) {
  max-width: 76ch;
  margin: 12px 0 0;
  color: var(--hd-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
}

.hd-source-method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.hd-source-method-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--hd-line);
  border-radius: 22px;
  background: var(--hd-white);
}

.hd-source-method-card > span {
  position: absolute;
  top: 14px;
  right: 18px;
  color: #eef0ef;
  font-size: 3.2rem;
  font-weight: 850;
  line-height: 1;
}

.hd-source-method-card h3 {
  max-width: 22ch;
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.hd-source-method-card > div {
  position: relative;
  z-index: 1;
  margin-top: 14px;
  color: var(--hd-secondary);
  font-size: 0.82rem;
  line-height: 1.62;
}

.hd-source-method-card p {
  margin: 0;
}

.hd-source-method-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.hd-source-method-card li + li {
  margin-top: 7px;
}

.hd-source-method-card a {
  color: var(--hd-ink);
  font-weight: 750;
}

.hd-source-library-layout {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  align-items: start;
  gap: 22px;
  margin-top: 28px;
}

.hd-source-index {
  min-width: 0;
  position: sticky;
  top: 96px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--hd-line);
  border-radius: 20px;
  background: var(--hd-paper);
  scrollbar-width: thin;
}

.hd-source-index > strong {
  display: block;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hd-line);
  color: var(--hd-ink);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hd-source-index nav {
  display: grid;
  gap: 3px;
  margin-top: 10px;
}

.hd-source-index a {
  min-height: 38px;
  display: flex;
  align-items: center;
  padding: 7px 9px;
  border-radius: 10px;
  color: var(--hd-secondary);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
}

.hd-source-index a:hover,
.hd-source-index a:focus-visible {
  background: var(--hd-white);
  color: var(--hd-ink);
}

.hd-source-reference-library {
  min-width: 0;
  display: grid;
  gap: 14px;
}

.hd-source-reference-panel {
  min-width: 0;
  scroll-margin-top: 100px;
  padding: 24px;
  border: 1px solid var(--hd-line);
  border-radius: 22px;
  background: var(--hd-white);
}

.hd-source-reference-panel h3 {
  margin: 6px 0 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.hd-source-reference-list {
  min-width: 0;
  margin-top: 18px;
  color: var(--hd-secondary);
  font-size: 0.8rem;
  line-height: 1.62;
  overflow-wrap: anywhere;
}

.hd-source-reference-list ul,
.hd-source-reference-list ol {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: reference;
}

.hd-source-reference-list li,
.hd-source-reference-list > p {
  position: relative;
  margin: 0;
  padding: 12px 12px 12px 42px;
  border-top: 1px solid var(--hd-line);
}

.hd-source-reference-list li {
  counter-increment: reference;
}

.hd-source-reference-list li::before {
  position: absolute;
  top: 13px;
  left: 4px;
  color: var(--hd-secondary);
  content: counter(reference, decimal-leading-zero);
  font-size: 0.75rem;
  font-weight: 850;
}

.hd-source-reference-list li:first-child,
.hd-source-reference-list > p:first-child {
  border-top: 0;
}

.hd-source-reference-list li ul {
  margin-top: 10px;
}

.hd-source-reference-list li li {
  padding-left: 34px;
}

.hd-source-reference-list a {
  color: var(--hd-ink);
  font-weight: 750;
  overflow-wrap: anywhere;
}

.hd-source-related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.hd-source-related-grid a {
  min-height: 112px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px;
  align-content: center;
  gap: 5px 10px;
  padding: 18px;
  border: 1px solid var(--hd-line);
  border-radius: 20px;
  background: var(--hd-white);
  color: var(--hd-ink);
  text-decoration: none;
}

.hd-source-related-grid small {
  grid-column: 1 / -1;
  color: var(--hd-pink-text);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hd-source-related-grid strong {
  font-size: 0.82rem;
  line-height: 1.35;
}

.hd-source-related-grid span {
  align-self: center;
  color: var(--hd-secondary);
  font-size: 1.1rem;
}

.hd-source-notice-wrap {
  padding: 12px 0 64px;
}

.hd-source-notice {
  padding: 20px 24px;
  border: 1px solid var(--hd-line);
  border-radius: 22px;
  background: var(--hd-white);
  color: var(--hd-secondary);
  font-size: 0.82rem;
  line-height: 1.55;
}

.hd-source-notice p {
  margin: 0;
}

.hd-source-notice a {
  color: var(--hd-ink);
  font-weight: 800;
}

.hd-source-page a:focus-visible {
  outline: 3px solid var(--hd-pink);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .hd-source-page {
    scroll-behavior: auto;
  }
}

@media (max-width: 900px) {
  .hd-source-hero {
    grid-template-columns: 1fr;
  }

  .hd-source-library-card > strong {
    margin-top: 38px;
  }

  .hd-source-library-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hd-source-index {
    position: static;
    max-height: none;
  }

  .hd-source-index nav,
  .hd-source-related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .hd-source-shell {
    width: calc(100% - 32px);
  }

  .hd-source-breadcrumb-wrap {
    padding-top: 24px;
  }

  .hd-source-hero {
    margin-top: 24px;
  }

  .hd-source-hero-copy,
  .hd-source-library-card,
  .hd-source-method,
  .hd-source-library,
  .hd-source-related {
    padding: 20px 16px;
    border-radius: 24px;
  }

  .hd-source-hero h1 {
    font-size: 2.15rem;
  }

  .hd-source-method-grid {
    grid-template-columns: 1fr;
  }

  .hd-source-index nav {
    grid-template-columns: 1fr 1fr;
    gap: 2px 6px;
  }

  .hd-source-index a {
    min-height: 44px;
    padding: 7px;
    font-size: 0.75rem;
  }

  .hd-source-reference-panel {
    padding: 20px 15px;
    border-radius: 18px;
  }

  .hd-source-reference-list li,
  .hd-source-reference-list > p {
    padding: 12px 4px 12px 34px;
  }

  .hd-source-related-grid {
    gap: 8px;
  }

  .hd-source-related-grid a {
    min-height: 106px;
    padding: 14px;
  }

  .hd-source-notice-wrap {
    padding-bottom: 40px;
  }
}

@media (max-width: 360px) {
  .hd-source-index nav,
  .hd-source-related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .hd-source-page { padding-bottom: 48px !important; }
}