/* 실버트리(silvertre.com) — 베이지 + 세이지그린 + 우드브라운 톤 */

:root {
  --bg: #f6f1e6;
  --bg-soft: #efe7d6;
  --surface: #fffdf8;
  --border: #e0d5bf;
  --text: #362b21;
  --text-muted: #746650;
  --sage: #5f7a5f;
  --sage-dark: #46614a;
  --sage-light: #e6ede3;
  --brown: #a8703f;
  --brown-dark: #7c4f28;
  --amber: #b98a55;
  --shadow: 0 8px 24px rgba(54, 43, 33, 0.08);
  --shadow-sm: 0 2px 8px rgba(54, 43, 33, 0.06);
  --radius: 14px;
  --font-body: "Pretendard", -apple-system, BlinkMacSystemFont, "Malgun Gothic", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--sage-dark);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--sage-dark);
  margin-right: auto;
}
.brand-logo { border-radius: 50%; }
.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.main-nav a:hover { background: var(--sage-light); color: var(--sage-dark); }
.main-nav a.active { background: var(--sage); color: #fff; }
.search-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
}
.search-link:hover { border-color: var(--sage); color: var(--sage-dark); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--sage-light) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 20px 56px;
  text-align: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  color: var(--sage-dark);
  letter-spacing: 0.04em;
  font-size: 0.85rem;
  margin: 0 0 14px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 0 0 18px;
  line-height: 1.4;
  color: var(--text);
}
.hero-desc {
  color: var(--text-muted);
  font-size: 1.02rem;
  margin: 0 0 28px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.btn-primary { background: var(--sage); color: #fff; }
.btn-primary:hover { background: var(--sage-dark); }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--sage); color: var(--sage-dark); }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-soft); }
.section-inner { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.section-title {
  font-size: 1.4rem;
  margin: 0 0 8px;
  color: var(--text);
}
.section-lead { color: var(--text-muted); margin: 0 0 28px; }
.section-heading {
  font-size: 1.2rem;
  margin: 36px 0 14px;
  color: var(--sage-dark);
  border-left: 4px solid var(--sage);
  padding-left: 12px;
}
.section-heading:first-child { margin-top: 0; }

/* ---------- Category grid ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.category-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.category-card-img { width: 100%; height: 140px; object-fit: cover; background: var(--sage-light); }
.category-card-body { padding: 18px; }
.category-card-body h3 { margin: 0 0 8px; font-size: 1.05rem; color: var(--text); }
.category-card-body p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Article grid / cards ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.article-card-img { width: 100%; height: 150px; object-fit: cover; background: var(--sage-light); }
.article-card-body { padding: 16px 18px 20px; }
.article-card-cat {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sage-dark);
  background: var(--sage-light);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 8px;
}
.article-card-body h3 { margin: 0 0 8px; font-size: 1rem; line-height: 1.5; color: var(--text); }
.article-card-body p { margin: 0; color: var(--text-muted); font-size: 0.88rem; }

.notice-block {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.notice-block p { color: var(--text-muted); margin: 0; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--sage-dark); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { margin: 0 4px; color: var(--border); }

/* ---------- Category hero ---------- */
.category-hero {
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
}
.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(246,241,230,0.15) 0%, rgba(246,241,230,0.55) 55%, rgba(246,241,230,0.96) 100%);
}
.category-hero-inner {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 20px 36px;
  width: 100%;
}
.category-hero-inner h1 { margin: 0 0 10px; font-size: clamp(1.5rem, 3.4vw, 2rem); }
.category-hero-inner p { margin: 0; color: var(--text-muted); max-width: 640px; }

/* ---------- Article page ---------- */
.article-header-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px 0;
}
.article-cat-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--sage-dark);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 10px;
}
.article-page h1 { font-size: clamp(1.5rem, 3.6vw, 2.1rem); margin: 0 0 14px; line-height: 1.4; }
.article-summary { color: var(--text-muted); font-size: 1.02rem; margin: 0 0 10px; }
.article-date { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); margin: 0 0 24px; }
.article-hero-img {
  max-width: 900px;
  margin: 0 auto 40px;
  padding: 0 20px;
}
.article-hero-img img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-body-grid {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 40px;
}
.article-body p { margin: 0 0 16px; color: var(--text); }
.content-list, .steps-list { margin: 0 0 20px; padding-left: 0; list-style: none; }
.content-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--text);
}
.content-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--sage);
  border-radius: 50%;
}
.content-list.checklist li { padding-left: 30px; }
.content-list.checklist li::before {
  content: "";
  left: 0; top: 2px;
  width: 16px; height: 16px;
  background: var(--surface);
  border: 2px solid var(--sage);
  border-radius: 4px;
}
.content-list.checklist li::after {
  content: "";
  position: absolute;
  left: 4px; top: 6px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--sage-dark);
  border-bottom: 2px solid var(--sage-dark);
  transform: rotate(-45deg);
}
.steps-list { counter-reset: step; }
.steps-list li {
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.steps-list .step-num {
  counter-increment: step;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--sage);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps-list .step-num::before { content: counter(step); }
.steps-list strong { display: block; margin-bottom: 4px; color: var(--text); }
.steps-list p { margin: 0; color: var(--text-muted); font-size: 0.94rem; }

.body-image {
  margin: 0 0 28px; padding: 0; text-align: center;
}
.body-image img {
  width: 100%; max-width: 480px; margin: 0 auto;
  border-radius: var(--radius); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.body-image figcaption {
  margin-top: 10px; font-size: 0.85rem; color: var(--text-muted);
}

.table-wrap { overflow-x: auto; margin: 0 0 28px; border-radius: var(--radius); border: 1px solid var(--border); }
.content-table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 0.94rem; }
.content-table caption {
  caption-side: top; text-align: left; padding: 12px 16px 0;
  font-weight: 600; color: var(--text);
}
.content-table th, .content-table td {
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.content-table th {
  background: var(--sage-light); color: var(--sage-dark);
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.02em;
}
.content-table tbody tr:last-child td { border-bottom: none; }
.content-table tbody tr:nth-child(even) { background: var(--bg-soft); }

.timeline-list { list-style: none; margin: 0 0 28px; padding: 0 0 0 14px; position: relative; }
.timeline-list::before {
  content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.timeline-list li { position: relative; padding-left: 26px; margin-bottom: 22px; }
.timeline-list li:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute; left: -14px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--brown); border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--brown);
}
.timeline-label {
  display: inline-block; font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--brown-dark); background: #f6e9da; padding: 2px 8px;
  border-radius: 999px; margin-bottom: 6px;
}
.timeline-list strong { display: block; margin-bottom: 4px; color: var(--text); }
.timeline-list p { margin: 0; color: var(--text-muted); font-size: 0.94rem; }

.callout {
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0 28px;
  font-size: 0.95rem;
  border-left: 4px solid var(--sage);
  background: var(--sage-light);
  color: var(--sage-dark);
}
.callout-warning { border-left-color: var(--brown); background: #f6e9da; color: var(--brown-dark); }
.callout-info { border-left-color: var(--amber); background: #f4ecdd; color: #6a4c22; }

.faq-section { margin-top: 40px; }
.faq-item {
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.faq-item h3 { margin: 0 0 8px; font-size: 1rem; color: var(--text); }
.faq-item p { margin: 0; color: var(--text-muted); font-size: 0.94rem; }

.article-side { align-self: start; }
.official-links {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: sticky;
  top: 90px;
}
.official-links h2 {
  font-size: 0.95rem;
  margin: 0 0 14px;
  color: var(--sage-dark);
}
.official-links ul { list-style: none; margin: 0 0 14px; padding: 0; }
.official-links li { margin-bottom: 14px; }
.official-links a {
  display: block;
  font-weight: 600;
  color: var(--brown-dark);
  margin-bottom: 3px;
}
.official-links a:hover { text-decoration: underline; }
.official-links span { display: block; font-size: 0.82rem; color: var(--text-muted); }
.official-note { font-size: 0.78rem; color: var(--text-muted); margin: 0; border-top: 1px solid var(--border); padding-top: 12px; }

.related-section { margin-top: 24px; }

/* ---------- Static pages ---------- */
.static-page-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}
.static-page h1 { font-size: clamp(1.5rem, 3.4vw, 2rem); margin: 0 0 16px; }
.static-page .article-body p { color: var(--text); }

/* ---------- Search ---------- */
.search-box { margin-bottom: 28px; }
#search-input {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 1rem;
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
}
#search-input:focus { outline: 2px solid var(--sage); border-color: var(--sage); }
.search-results { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.search-result-item a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.search-result-item a:hover { border-color: var(--sage); }
.search-result-cat {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sage-dark);
  background: var(--sage-light);
  padding: 2px 9px;
  border-radius: 999px;
  margin-bottom: 8px;
}
.search-result-item h3 { margin: 0 0 6px; font-size: 1rem; }
.search-result-item p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }
.search-empty { color: var(--text-muted); }

.not-found { text-align: center; padding: 100px 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--sage-dark); color: #ece7d9; margin-top: 40px; }
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 20px 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}
.footer-brand { font-size: 1.1rem; font-weight: 700; margin: 0 0 8px; color: #fff; }
.footer-tagline { margin: 0 0 14px; color: #cfd8c9; font-size: 0.92rem; }
.footer-disclaimer { margin: 0; color: #b9c4b1; font-size: 0.82rem; line-height: 1.7; }
.footer-heading { font-size: 0.85rem; color: #d9e0d2; margin: 0 0 12px; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.03em; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #dde4d6; font-size: 0.9rem; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 16px 20px;
  text-align: center;
  font-size: 0.78rem;
  color: #b9c4b1;
}

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .article-body-grid { grid-template-columns: 1fr; }
  .official-links { position: static; }
  .footer-inner { grid-template-columns: 1fr; }
  .main-nav ul { gap: 2px; }
  .main-nav a { padding: 6px 10px; font-size: 0.85rem; }
}