/* PRAMENO Sub-page (article) styles */

.pr-article {
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(40px, 5vw, 72px) 24px;
  font-size: 18px;          /* 16px → 18px (본문 본문 단락) */
  line-height: 1.85;
  color: var(--pr-color-text);
}
.pr-article > * + * { margin-top: 24px; }

.pr-article h2 {
  font-family: var(--pr-font-display-ko);
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.3;
  color: var(--pr-color-primary);
  font-weight: 400;
  margin-top: 56px;
  letter-spacing: -0.01em;
}
html[lang="en"] .pr-article h2 { font-family: var(--pr-font-display-en); }

.pr-article h2:first-child { margin-top: 0; }

.pr-article h3 {
  font-family: var(--pr-font-body-ko);
  font-size: 20px;          /* 18px → 20px (소제목) */
  font-weight: 700;
  color: var(--pr-color-primary);
  margin-top: 32px;
  margin-bottom: 10px;
}
html[lang="en"] .pr-article h3 { font-family: var(--pr-font-body-en); }

.pr-article p { margin: 0; }
.pr-article p + p { margin-top: 16px; }

.pr-article strong { color: var(--pr-color-primary); font-weight: 600; }
.pr-article em { font-style: italic; color: var(--pr-color-secondary); }

.pr-article ul, .pr-article ol {
  padding-left: 22px;
  margin: 12px 0;
}
.pr-article li { margin-bottom: 8px; }
.pr-article li::marker { color: var(--pr-color-secondary); }

.pr-quote {
  margin: 32px 0;
  padding: 24px 28px;
  border-left: 4px solid var(--pr-color-secondary);
  background: var(--pr-ez-50);
  border-radius: 0 var(--pr-radius-md) var(--pr-radius-md) 0;
  font-family: var(--pr-font-display-ko);
  font-size: 20px;          /* 18px → 20px (인용 박스) */
  line-height: 1.65;         /* 1.6 → 1.65 */
  color: var(--pr-color-primary);
  font-style: italic;
}
html[lang="en"] .pr-quote { font-family: var(--pr-font-display-en); }

.pr-callout {
  margin: 32px 0;
  padding: 22px 26px;
  background: #fff;
  border: 1px solid var(--pr-ez-200);
  border-radius: var(--pr-radius-lg);
  box-shadow: var(--pr-shadow-card);
}
.pr-callout h4 {
  font-family: var(--pr-font-body-ko);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: var(--pr-tracking-label);
  text-transform: uppercase;
  color: var(--pr-color-secondary);
  margin: 0 0 10px;
}
html[lang="en"] .pr-callout h4 { font-family: var(--pr-font-body-en); }
.pr-callout p { font-size: 15px; color: var(--pr-color-text); line-height: 1.7; }

.pr-data-card {
  margin: 32px 0;
  padding: 28px;
  background: linear-gradient(150deg, var(--pr-ez-50), #fff);
  border: 1px solid var(--pr-ez-200);
  border-radius: var(--pr-radius-lg);
  text-align: center;
}
.pr-data-card .val {
  font-family: var(--pr-font-data);
  font-size: clamp(36px, 4.4vw, 52px);
  font-weight: 500;
  color: var(--pr-color-reduction);
  line-height: 1;
  letter-spacing: 0;
}
.pr-data-card .val.primary { color: var(--pr-color-primary); }
.pr-data-card .val.accent { color: var(--pr-color-accent); }
.pr-data-card .val.oxi { color: var(--pr-color-oxidation); }
.pr-data-card .lbl {
  font-size: 15px;          /* 13px → 15px */
  color: var(--pr-color-muted);
  letter-spacing: var(--pr-tracking-label);
  text-transform: uppercase;
  margin-top: 10px;
  font-weight: 500;
}
.pr-data-card .desc {
  margin-top: 14px;
  font-size: 16px;          /* 14px → 16px */
  color: var(--pr-color-text);
  line-height: 1.75;         /* 1.7 → 1.75 */
  /* 박스 안 설명도 양쪽맞춤 (부모의 text-align:center를 명시적으로 덮어씀) */
  text-align: justify;
  text-justify: auto;
  /* 좁은 폭에서 단어 사이 갭이 벌어지는 문제 완화 */
  -webkit-hyphens: auto;
          hyphens: auto;
  word-spacing: -0.025em;
}

/* Comparison table */
.pr-table-wrap {
  margin: 32px 0;
  overflow-x: auto;
  border: 1px solid var(--pr-color-border);
  border-radius: var(--pr-radius-lg);
}
.pr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 560px;
}
.pr-table thead th {
  background: var(--pr-ez-50);
  color: var(--pr-color-primary);
  font-weight: 600;
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--pr-color-border);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.pr-table tbody td, .pr-table tbody th {
  padding: 14px 18px;
  border-bottom: 1px solid var(--pr-neutral-100);
  vertical-align: top;
  text-align: left;
  line-height: 1.55;
}
.pr-table tbody tr:last-child td,
.pr-table tbody tr:last-child th { border-bottom: 0; }
.pr-table tbody th { font-weight: 600; color: var(--pr-color-primary); background: var(--pr-neutral-50); }
.pr-table .highlight { background: rgba(232,248,243,0.6); }
.pr-table .highlight td, .pr-table .highlight th { color: var(--pr-color-primary); font-weight: 500; }
.pr-table td.mono { font-family: var(--pr-font-data); }
.pr-table td.neg { color: var(--pr-color-reduction); font-family: var(--pr-font-data); font-weight: 500; }
.pr-table td.pos { color: var(--pr-color-oxidation); font-family: var(--pr-font-data); font-weight: 500; }

.pr-citation {
  font-size: 12.5px;
  color: var(--pr-color-muted);
  font-style: italic;
  margin-top: 8px;
  line-height: 1.55;
}
.pr-citation::before {
  content: "◆ ";
  color: var(--pr-color-secondary);
  font-style: normal;
  margin-right: 2px;
}

.pr-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.pr-feature {
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--pr-color-border);
  border-radius: var(--pr-radius-lg);
  transition: all var(--pr-t-base);
}
.pr-feature:hover { border-color: var(--pr-ez-200); box-shadow: var(--pr-shadow-card); }
.pr-feature .num {
  font-family: var(--pr-font-data);
  font-size: 12px;
  color: var(--pr-color-secondary);
  letter-spacing: 0.04em;
  display: inline;
  margin: 0;
}
.pr-feature .num::after { content: ". "; }
.pr-feature h4 {
  font-family: var(--pr-font-body-ko);
  font-size: 15px;
  font-weight: 600;
  color: var(--pr-color-primary);
  display: inline;
  margin: 0;
}
html[lang="en"] .pr-feature h4 { font-family: var(--pr-font-body-en); }
.pr-feature p { font-size: 13.5px; color: var(--pr-color-muted); line-height: 1.6; margin: 8px 0 0; }

/* Article nav (prev/next) */
.pr-article-nav {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 24px 72px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pr-article-nav a {
  display: block;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--pr-color-border);
  border-radius: var(--pr-radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--pr-t-base);
}
.pr-article-nav a:hover { border-color: var(--pr-color-secondary); transform: translateY(-2px); box-shadow: var(--pr-shadow-card); }
.pr-article-nav .lbl {
  font-size: 11px;
  color: var(--pr-color-muted);
  letter-spacing: var(--pr-tracking-label);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.pr-article-nav .ttl {
  font-family: var(--pr-font-body-ko);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--pr-color-primary);
  line-height: 1.4;
}
html[lang="en"] .pr-article-nav .ttl { font-family: var(--pr-font-body-en); }
.pr-article-nav .next { text-align: right; }
.pr-article-nav .prev .lbl::before { content: "← "; }
.pr-article-nav .next .lbl::after  { content: " →"; }

/* Contact form styles */
.pr-form {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 36px;
  background: #fff;
  border: 1px solid var(--pr-color-border);
  border-radius: var(--pr-radius-lg);
}
.pr-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--pr-color-primary);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.pr-form .req { color: var(--pr-color-accent); margin-left: 4px; }
.pr-form-row { margin-bottom: 18px; }
.pr-form-row.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pr-form input[type=text],
.pr-form input[type=email],
.pr-form input[type=tel],
.pr-form select,
.pr-form textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 14px;
  border: 1px solid var(--pr-color-border);
  border-radius: var(--pr-radius-md);
  background: #fff;
  font-family: inherit;
  line-height: 1.5;
  transition: border-color var(--pr-t-fast), box-shadow var(--pr-t-fast);
}
.pr-form textarea { min-height: 140px; resize: vertical; }
.pr-form input:focus,
.pr-form select:focus,
.pr-form textarea:focus {
  outline: none;
  border-color: var(--pr-color-secondary);
  box-shadow: 0 0 0 3px rgba(26,148,204,0.12);
}
.pr-form-note {
  font-size: 12.5px;
  color: var(--pr-color-muted);
  margin-top: 6px;
  line-height: 1.55;
}
.pr-form-submit {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--pr-color-border);
}
.pr-form .status {
  flex: 1;
  font-size: 13px;
  color: var(--pr-color-muted);
}
.pr-form .status.ok { color: var(--pr-color-reduction); }
.pr-form .status.err { color: var(--pr-coral-600); }

@media (max-width: 720px) {
  .pr-article-nav { grid-template-columns: 1fr; }
  .pr-form-row.grid { grid-template-columns: 1fr; }
  .pr-form { padding: 24px; }
  .pr-article { padding: 36px 20px; font-size: 15px; line-height: 1.75; }
  .pr-article h2 { margin-top: 40px; }
  .pr-quote { padding: 18px 20px; font-size: 16px; margin: 24px 0; }
  .pr-callout { padding: 18px 20px; }
  .pr-data-card { padding: 24px 18px; }
  .pr-data-card .val { font-size: clamp(30px, 8vw, 44px); }
  .pr-table thead th, .pr-table tbody td, .pr-table tbody th {
    padding: 10px 12px; font-size: 12.5px;
  }
  .pr-table { min-width: 480px; }
  .pr-feature-grid { gap: 12px; }
  .pr-feature { padding: 18px 20px; }
}
@media (max-width: 420px) {
  .pr-article { padding: 28px 16px; }
  .pr-data-card .val { font-size: 30px; }
  .pr-data-card { padding: 22px 16px; }
}