:root {
  --ink: #071526;
  --muted: #596779;
  --line: #dce3eb;
  --paper: #ffffff;
  --surface: #f4f7fb;
  --blue: #1557ff;
  --blue-deep: #0c2f7a;
  --lime: #c8ff2e;
  --orange: #ff6333;
  --max: 1180px;
  --shadow: 0 18px 48px rgba(7, 21, 38, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }
.skip-link { position: fixed; top: -80px; left: 12px; z-index: 100; padding: 10px 14px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.header-inner { width: min(calc(100% - 32px), var(--max)); min-height: 70px; margin: auto; display: flex; align-items: center; gap: 26px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; font-size: 1.15rem; letter-spacing: -.04em; white-space: nowrap; }
.brand-mark { width: 29px; height: 29px; display: grid; place-items: center; background: var(--ink); color: var(--lime); font-size: .72rem; border-radius: 2px 10px 2px 2px; }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.main-nav a { padding: 9px 12px; color: #334156; font-weight: 700; font-size: .92rem; border-radius: 8px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { background: var(--surface); color: var(--blue); }
.tool-link { border: 1px solid var(--ink); color: var(--ink) !important; }
.menu-btn { display: none; margin-left: auto; border: 0; background: transparent; width: 44px; height: 44px; font-size: 1.35rem; }
.page-wrap { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; }
.issue-strip { border-bottom: 1px solid var(--line); background: var(--ink); color: white; }
.issue-inner { width: min(calc(100% - 32px), var(--max)); margin: auto; min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: .78rem; letter-spacing: .02em; }
.issue-inner strong { color: var(--lime); }
.cover { padding: 44px 0 24px; }
.cover-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(290px, .75fr); gap: 24px; }
.lead-story { position: relative; min-height: 430px; padding: 42px; overflow: hidden; background: var(--blue); color: white; display: flex; flex-direction: column; justify-content: space-between; }
.lead-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.lead-story::before { content: ""; position: absolute; z-index: 1; inset: 0; opacity: 1; background: linear-gradient(90deg, rgba(7,21,38,.94) 0%, rgba(7,21,38,.8) 48%, rgba(7,21,38,.16) 100%); }
.lead-story::after { content: ""; position: absolute; z-index: 1; width: 340px; height: 340px; right: -80px; bottom: -150px; border: 42px solid var(--lime); border-radius: 50%; }
.lead-copy { position: relative; z-index: 2; max-width: 710px; }
.kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; font-size: .78rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.kicker::before { content: ""; width: 26px; height: 3px; background: currentColor; }
.lead-story h1 { margin: 0; font-size: clamp(2.3rem, 5vw, 4.7rem); line-height: 1.04; letter-spacing: -.065em; max-width: 780px; }
.lead-story p { margin: 20px 0 0; max-width: 580px; font-size: 1.06rem; color: rgba(255,255,255,.83); }
.story-meta { position: relative; z-index: 2; display: flex; align-items: end; justify-content: space-between; gap: 20px; font-size: .86rem; }
.read-arrow { width: 52px; height: 52px; display: grid; place-items: center; background: var(--lime); color: var(--ink); border-radius: 50%; font-size: 1.4rem; transition: transform .2s ease; }
.lead-story:hover .read-arrow { transform: translate(4px, -4px); }
.cover-side { display: grid; grid-template-rows: auto 1fr; gap: 16px; }
.mini-index { padding: 24px; border: 1px solid var(--line); background: var(--surface); }
.mini-index h2 { margin: 0 0 16px; font-size: 1rem; }
.index-list { display: grid; gap: 14px; }
.index-row { display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: start; padding-top: 14px; border-top: 1px solid var(--line); }
.index-row b { color: var(--blue); font-size: .78rem; }
.index-row span { font-weight: 750; font-size: .95rem; line-height: 1.4; }
.tool-panel { padding: 26px; background: var(--ink); color: white; position: relative; overflow: hidden; }
.tool-panel::after { content: "PDF"; position: absolute; right: -8px; bottom: -30px; font-size: 5rem; font-weight: 950; letter-spacing: -.08em; color: rgba(255,255,255,.06); }
.tool-panel .badge { display: inline-block; padding: 4px 8px; background: var(--lime); color: var(--ink); font-size: .7rem; font-weight: 900; }
.tool-panel h2 { margin: 18px 0 10px; font-size: 1.55rem; line-height: 1.25; letter-spacing: -.04em; }
.tool-panel p { margin: 0; color: #bfcbda; font-size: .92rem; }
.tool-panel a { position: relative; z-index: 1; display: inline-flex; margin-top: 22px; color: var(--lime); font-weight: 850; }
.section { padding: 56px 0; }
.section-surface { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 24px; }
.section-head h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.055em; line-height: 1.2; }
.section-head p { margin: 0; max-width: 440px; color: var(--muted); font-size: .92rem; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.article-card { min-height: 360px; overflow: hidden; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; display: flex; flex-direction: column; transition: background .18s ease, transform .18s ease; }
.article-card:nth-child(3n) { border-right: 0; }
.article-card:hover { background: #edf3ff; transform: translateY(-2px); }
.card-image { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-bottom: 1px solid var(--line); transition: transform .25s ease; }
.article-card:hover .card-image { transform: scale(1.018); }
.card-content { display: flex; flex: 1; flex-direction: column; padding: 20px 22px; }
.card-top { display: flex; justify-content: space-between; gap: 12px; color: var(--blue); font-size: .76rem; font-weight: 900; }
.article-card h3 { margin: 20px 0 12px; font-size: 1.3rem; line-height: 1.35; letter-spacing: -.035em; }
.article-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.article-card .card-bottom { margin-top: auto; padding-top: 24px; font-size: .78rem; color: #7a8797; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.principle { padding: 28px; background: white; }
.principle b { display: block; margin-bottom: 10px; font-size: 1.02rem; }
.principle span { color: var(--muted); font-size: .9rem; }
.category-hero, .info-hero { padding: 58px 0 34px; border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--blue); font-size: .78rem; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.category-hero h1, .info-hero h1 { margin: 10px 0 12px; font-size: clamp(2.4rem, 7vw, 5.5rem); line-height: 1; letter-spacing: -.07em; }
.category-hero p, .info-hero p { max-width: 660px; margin: 0; color: var(--muted); font-size: 1.04rem; }
.category-list { padding: 36px 0 72px; }
.list-card { display: grid; grid-template-columns: 78px minmax(0, 1fr) 84px; gap: 22px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); }
.list-card:first-child { border-top: 2px solid var(--ink); }
.list-number { font-weight: 900; color: var(--blue); font-size: 1.4rem; }
.list-card h2 { margin: 0 0 7px; font-size: 1.4rem; letter-spacing: -.035em; line-height: 1.35; }
.list-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.list-card time { color: #718094; font-size: .78rem; text-align: right; }
.article-shell { width: min(calc(100% - 32px), 820px); margin: auto; }
.article-header { padding: 60px 0 36px; border-bottom: 1px solid var(--line); }
.article-header h1 { margin: 14px 0 18px; font-size: clamp(2.25rem, 6.2vw, 4.7rem); line-height: 1.08; letter-spacing: -.065em; }
.article-dek { margin: 0; color: var(--muted); font-size: 1.12rem; line-height: 1.7; }
.article-byline { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px 18px; color: #66758a; font-size: .8rem; }
.article-body { padding: 38px 0 74px; font-size: 1.04rem; line-height: 1.9; }
.article-visual, .section-visual, .tool-visual { overflow: hidden; border: 1px solid var(--line); background: var(--surface); }
.article-visual { margin: 0 0 38px; }
.section-visual { width: min(calc(100% - 32px), var(--max)); margin: 30px auto 0; }
.tool-visual { margin: 0 0 26px; }
.article-visual img, .section-visual img, .tool-visual img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article-visual figcaption, .section-visual figcaption, .tool-visual figcaption { padding: 10px 13px; color: #68778a; background: white; font-size: .76rem; line-height: 1.5; }
.article-body h2 { margin: 48px 0 14px; font-size: 1.75rem; line-height: 1.3; letter-spacing: -.04em; }
.article-body h3 { margin: 34px 0 10px; font-size: 1.22rem; }
.article-body p { margin: 0 0 20px; }
.article-body ul, .article-body ol { margin: 0 0 24px; padding-left: 24px; }
.article-body li { margin: 8px 0; }
.note-box { margin: 30px 0; padding: 22px 24px; border-left: 5px solid var(--blue); background: #eef4ff; }
.note-box strong { display: block; margin-bottom: 5px; }
.number-box { margin: 30px 0; padding: 28px; background: var(--ink); color: white; }
.number-box b { color: var(--lime); }
.checklist { list-style: none; padding: 0 !important; }
.checklist li { position: relative; padding-left: 30px; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 900; }
.sources { margin-top: 52px; padding-top: 22px; border-top: 1px solid var(--line); }
.sources h2 { margin-top: 0; font-size: 1rem; }
.sources a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.disclaimer { margin-top: 32px; color: #6c7989; font-size: .82rem; }
.tool-page { padding: 46px 0 76px; background: var(--surface); min-height: calc(100vh - 70px); }
.tool-heading { max-width: 760px; margin-bottom: 26px; }
.tool-heading h1 { margin: 8px 0 10px; font-size: clamp(2.25rem, 5vw, 4rem); line-height: 1.1; letter-spacing: -.06em; }
.tool-heading p { margin: 0; color: var(--muted); }
.tool-workspace { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 22px; }
.tool-card { padding: 28px; background: white; border: 1px solid var(--line); box-shadow: var(--shadow); }
.dropzone { min-height: 255px; border: 2px dashed #aab7c7; display: grid; place-items: center; text-align: center; padding: 30px; transition: border-color .15s, background .15s; }
.dropzone.dragover { border-color: var(--blue); background: #eef4ff; }
.drop-icon { width: 62px; height: 62px; margin: 0 auto 15px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--lime); font-weight: 950; }
.dropzone h2 { margin: 0 0 7px; font-size: 1.25rem; }
.dropzone p { margin: 0; color: var(--muted); font-size: .9rem; }
.file-button { display: inline-flex; margin-top: 18px; padding: 11px 17px; background: var(--blue); color: white; font-weight: 850; border: 0; border-radius: 7px; }
.file-list { display: grid; gap: 10px; margin-top: 18px; }
.file-row { display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; align-items: center; padding: 10px; background: var(--surface); border: 1px solid var(--line); }
.file-thumb { width: 56px; height: 44px; object-fit: cover; background: white; }
.file-info { min-width: 0; }
.file-info b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .87rem; }
.file-info span { color: var(--muted); font-size: .75rem; }
.remove-file { width: 34px; height: 34px; border: 0; background: white; color: #b42318; border-radius: 50%; }
.tool-options h2 { margin: 0 0 18px; font-size: 1.1rem; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; margin-bottom: 7px; font-size: .84rem; font-weight: 800; }
.form-row input, .form-row select, .text-editor textarea { width: 100%; min-height: 45px; padding: 10px 12px; color: var(--ink); background: white; border: 1px solid #aeb9c6; border-radius: 6px; }
.text-editor textarea { min-height: 380px; resize: vertical; line-height: 1.75; }
.primary-button { width: 100%; min-height: 49px; margin-top: 8px; padding: 12px 18px; border: 0; border-radius: 7px; background: var(--blue); color: white; font-weight: 900; }
.primary-button:disabled { opacity: .48; cursor: not-allowed; }
.privacy-note { margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.tool-status { margin-top: 12px; min-height: 24px; color: var(--blue-deep); font-size: .84rem; font-weight: 750; }
.tool-guide { padding: 46px 0 0; }
.tool-guide h2 { margin: 0 0 16px; font-size: 1.5rem; }
.tool-guide ol { margin: 0; padding-left: 22px; color: var(--muted); }
.info-content { width: min(calc(100% - 32px), 820px); margin: auto; padding: 42px 0 76px; }
.info-content h2 { margin: 38px 0 10px; letter-spacing: -.03em; }
.info-content p, .info-content li { color: #39495e; }
.info-content a { color: var(--blue); text-decoration: underline; }
.contact-card { padding: 28px; background: var(--surface); border: 1px solid var(--line); }
.contact-form { display: grid; gap: 16px; margin-top: 24px; }
.contact-form label { display: grid; gap: 6px; font-weight: 800; font-size: .9rem; }
.contact-form input, .contact-form textarea { padding: 12px; border: 1px solid #aeb9c6; background: white; border-radius: 6px; }
.contact-form textarea { min-height: 160px; }
.site-footer { padding: 44px 0 28px; background: var(--ink); color: white; }
.footer-grid { width: min(calc(100% - 32px), var(--max)); margin: auto; display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 50px; }
.footer-brand p { max-width: 360px; color: #9eacbc; font-size: .84rem; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.footer-links b { display: block; margin-bottom: 11px; font-size: .78rem; color: var(--lime); }
.footer-links a { display: block; margin: 7px 0; color: #d7e0ea; font-size: .83rem; }
.copyright { width: min(calc(100% - 32px), var(--max)); margin: 34px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.14); color: #8493a5; font-size: .74rem; }

@media (max-width: 860px) {
  .menu-btn { display: block; }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: 70px; padding: 12px 16px 18px; background: white; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .main-nav.open { display: grid; }
  .main-nav a { padding: 11px 12px; }
  .cover-grid, .tool-workspace { grid-template-columns: 1fr; }
  .cover-side { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card:nth-child(3n) { border-right: 1px solid var(--line); }
  .article-card:nth-child(2n) { border-right: 0; }
  .principles { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { word-break: normal; }
  .issue-inner span:last-child { display: none; }
  .cover { padding-top: 20px; }
  .lead-story { min-height: 400px; padding: 28px 24px; }
  .lead-story h1 { font-size: 2.55rem; }
  .cover-side, .article-grid { grid-template-columns: 1fr; }
  .article-card, .article-card:nth-child(3n), .article-card:nth-child(2n) { border-right: 0; min-height: 230px; }
  .section { padding: 42px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 9px; }
  .list-card { grid-template-columns: 46px 1fr; gap: 14px; }
  .list-card time { display: none; }
  .article-header { padding-top: 38px; }
  .article-header h1 { font-size: 2.55rem; }
  .tool-card { padding: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

@media print {
  .site-header, .issue-strip, .site-footer, .no-print, .tool-heading, .tool-options, .tool-guide { display: none !important; }
  body { background: white; }
  .tool-page, .text-editor, .tool-card { padding: 0; border: 0; box-shadow: none; background: white; }
  .tool-workspace { display: block; }
  .text-editor textarea { display: none; }
  #printOutput { display: block !important; white-space: pre-wrap; font-family: "Noto Sans KR", sans-serif; font-size: 11pt; line-height: 1.7; }
}

/* Expanded magazine system */
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 6px 9px; margin-bottom: 24px; color: #718094; font-size: .78rem; }
.breadcrumbs a:hover { color: var(--blue); text-decoration: underline; }
.category-grid { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid var(--line); background: white; }
.category-tile { min-height: 230px; padding: 24px 20px; border-right: 1px solid var(--line); transition: background .15s, transform .15s; }
.category-tile:last-child { border-right: 0; }
.category-tile:hover { background: #eef4ff; transform: translateY(-3px); }
.category-tile > span { color: var(--blue); font-size: .78rem; font-weight: 900; }
.category-tile h3 { margin: 34px 0 9px; font-size: 1.3rem; letter-spacing: -.04em; }
.category-tile p { margin: 0; color: var(--muted); font-size: .84rem; line-height: 1.65; }
.split-section { display: grid; grid-template-columns: minmax(0, 2fr) minmax(260px, .78fr); gap: 48px; align-items: start; }
.column-grid, .column-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.column-list-grid { width: min(calc(100% - 32px), var(--max)); margin: 34px auto 76px; }
.column-list-grid.compact { width: 100%; margin: 18px 0 0; grid-template-columns: repeat(2, 1fr); }
.column-card { display: flex; min-height: 330px; overflow: hidden; flex-direction: column; background: var(--ink); color: white; border-top: 5px solid var(--lime); transition: transform .15s, box-shadow .15s; }
.column-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.column-card-image { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; border-bottom: 1px solid rgba(255,255,255,.14); }
.column-card-content { display: flex; flex: 1; flex-direction: column; padding: 20px 22px; }
.column-card-content > span { color: var(--lime); font-size: .7rem; font-weight: 900; letter-spacing: .1em; }
.column-card h3 { margin: 18px 0 9px; font-size: 1.2rem; line-height: 1.35; letter-spacing: -.035em; }
.column-card p { margin: 0 0 18px; color: #b8c4d3; font-size: .84rem; }
.column-card small { margin-top: auto; color: #8fa0b4; }
.owner-card { position: sticky; top: 96px; padding: 30px; border: 1px solid var(--line); background: var(--surface); }
.owner-card h2 { margin: 8px 0; font-size: 2rem; }
.owner-card p { color: var(--muted); }
.owner-monogram { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 50%; background: var(--blue); color: var(--lime); font-weight: 950; font-size: 1.4rem; }
.owner-monogram-large { width: 112px; height: 112px; margin: 0; font-size: 3rem; }
.text-link { display: inline-block; margin-top: 16px; color: var(--blue); font-weight: 850; text-decoration: underline; text-underline-offset: 4px; }
.home-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 30px; padding: 24px 28px; background: white; border: 1px solid var(--line); }
.home-cta b, .home-cta span { display: block; }
.home-cta span { margin-top: 3px; color: var(--muted); font-size: .84rem; }
.category-intro { padding: 26px 0 2px; color: var(--muted); }
.category-intro p { max-width: 780px; }
.article-intro { font-size: 1.2rem; font-weight: 650; line-height: 1.75; letter-spacing: -.02em; }
.article-toc { margin: 32px 0 44px; padding: 22px 26px; border: 1px solid var(--line); background: var(--surface); }
.article-toc b { display: block; margin-bottom: 8px; }
.article-toc ol { margin: 0; columns: 2; column-gap: 30px; }
.article-toc a:hover { color: var(--blue); text-decoration: underline; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary { padding: 15px 2px; font-weight: 850; cursor: pointer; }
.faq-item p { padding: 0 4px 15px; color: var(--muted); }
.article-author { display: grid; grid-template-columns: 64px 1fr; gap: 18px; margin-top: 54px; padding: 26px; background: var(--surface); border: 1px solid var(--line); }
.article-author h2 { margin: 2px 0 5px; font-size: 1.35rem; }
.article-author p { margin: 0; color: var(--muted); font-size: .9rem; }
.column-hero, .column-article-header { padding: 60px 0 44px; background: var(--ink); color: white; }
.column-hero .breadcrumbs, .column-article-header .breadcrumbs { color: #9eacbc; }
.column-hero h1 { margin: 12px 0 14px; font-size: clamp(3rem, 7vw, 6.8rem); line-height: .98; letter-spacing: -.075em; }
.column-hero p { max-width: 650px; color: #b7c3d1; }
.column-article-header h1 { margin: 14px 0 18px; font-size: clamp(2.4rem, 6vw, 4.8rem); line-height: 1.07; letter-spacing: -.065em; }
.column-article-header .article-dek { color: #b7c3d1; }
.author-hero-grid { display: grid; grid-template-columns: 130px 1fr; gap: 28px; align-items: center; }
.author-hero-grid h1 { margin: 0; }
.admin-only-button { margin-top: 12px; }
.sitemap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 38px 0 76px; align-items: start; }
.sitemap-grid section { padding: 22px; border: 1px solid var(--line); background: white; }
.sitemap-grid h2 { margin: 0 0 12px; font-size: 1.2rem; }
.sitemap-grid ul { margin: 0; padding-left: 18px; }
.sitemap-grid li { margin: 7px 0; color: var(--muted); font-size: .86rem; }
.sitemap-grid a:hover { color: var(--blue); text-decoration: underline; }
.secondary-button { display: inline-flex; margin: 18px 0 0 8px; padding: 10px 16px; border: 1px solid var(--ink); border-radius: 7px; font-weight: 850; }
.not-found { min-height: 70vh; display: grid; place-items: center; padding: 50px 16px; text-align: center; background: var(--surface); }
.not-found > div { max-width: 620px; }
.display-code { display: block; color: var(--blue); font-size: clamp(5rem, 16vw, 12rem); line-height: .85; font-weight: 950; letter-spacing: -.1em; }
.not-found h1 { margin: 24px 0 10px; font-size: 2.2rem; letter-spacing: -.05em; }

/* CMS-lite */
.admin-page { min-height: 80vh; background: var(--surface); }
.admin-login { width: min(calc(100% - 32px), 560px); margin: 0 auto; padding: 80px 0; text-align: center; }
.admin-login .brand-mark { margin: 0 auto 22px; width: 52px; height: 52px; }
.admin-login h1 { margin: 8px 0 10px; font-size: 2.8rem; letter-spacing: -.06em; }
.admin-login p { color: var(--muted); }
.admin-login > a { display: block; margin-top: 18px; color: var(--muted); font-size: .86rem; }
.admin-shell { min-height: calc(100vh - 70px); grid-template-columns: 250px minmax(0, 1fr); }
.admin-shell:not([hidden]) { display: grid; }
.admin-sidebar { position: sticky; top: 70px; height: calc(100vh - 70px); display: flex; flex-direction: column; padding: 24px 18px; background: var(--ink); color: white; }
.admin-sidebar nav { display: grid; gap: 7px; margin-top: 34px; }
.admin-sidebar button, .admin-sidebar label { width: 100%; padding: 10px 12px; border: 0; border-radius: 6px; background: transparent; color: #c9d3df; text-align: left; font-weight: 750; cursor: pointer; }
.admin-sidebar button:hover, .admin-sidebar button.active, .admin-sidebar label:hover { background: rgba(255,255,255,.1); color: white; }
.admin-data-actions { display: grid; gap: 4px; margin-top: auto; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.14); }
.admin-main { min-width: 0; padding: 34px; }
.admin-main > header { display: flex; justify-content: space-between; align-items: end; gap: 20px; }
.admin-main > header h1 { margin: 2px 0 0; font-size: 2.1rem; letter-spacing: -.05em; }
.admin-main > header a { color: var(--blue); font-weight: 800; }
.admin-warning { margin: 22px 0; padding: 13px 16px; border-left: 4px solid #f59e0b; background: #fff7db; color: #6b4d00; font-size: .82rem; }
.admin-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.admin-metric { padding: 20px; border: 1px solid var(--line); background: white; }
.admin-metric b { display: block; color: var(--blue); font-size: 2rem; line-height: 1.1; }
.admin-metric span { color: var(--muted); font-size: .8rem; }
.admin-panel { margin-top: 18px; padding: 22px; border: 1px solid var(--line); background: white; }
.admin-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.admin-panel-head h2 { margin: 0; font-size: 1.25rem; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 11px 9px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: .82rem; }
.admin-table th { color: var(--muted); }
.admin-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.admin-actions button, .small-button { padding: 7px 10px; border: 1px solid var(--line); border-radius: 5px; background: white; font-size: .78rem; font-weight: 800; }
.small-button.primary { border-color: var(--blue); background: var(--blue); color: white; }
.admin-editor { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.admin-editor label { display: grid; gap: 5px; color: var(--muted); font-size: .78rem; font-weight: 800; }
.admin-editor input, .admin-editor textarea, .admin-editor select { width: 100%; padding: 10px 11px; border: 1px solid #aeb9c6; border-radius: 6px; background: white; color: var(--ink); }
.admin-editor textarea { min-height: 150px; resize: vertical; }
.admin-editor .wide { grid-column: 1 / -1; }
.admin-editor-buttons { display: flex; flex-wrap: wrap; gap: 8px; grid-column: 1 / -1; }
.admin-empty { padding: 44px; text-align: center; color: var(--muted); }
.status-pill { display: inline-block; padding: 3px 7px; border-radius: 999px; background: #e6f7e9; color: #197033; font-size: .7rem; font-weight: 850; }

@media (max-width: 980px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-tile, .category-tile:last-child { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .column-grid, .column-list-grid, .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-metrics { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .split-section, .author-hero-grid { grid-template-columns: 1fr; }
  .owner-card { position: static; }
  .article-toc ol { columns: 1; }
  .home-cta { align-items: flex-start; flex-direction: column; }
  .admin-shell:not([hidden]) { display: block; }
  .admin-sidebar { position: static; height: auto; }
  .admin-sidebar nav { grid-template-columns: repeat(2, 1fr); }
  .admin-data-actions { margin-top: 22px; }
  .admin-main { padding: 24px 16px; }
  .admin-editor { grid-template-columns: 1fr; }
  .admin-editor .wide { grid-column: auto; }
  .admin-editor-buttons { grid-column: auto; }
  .admin-table thead { display: none; }
  .admin-table tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .admin-table td { display: block; padding: 4px 0; border: 0; }
}

@media (max-width: 560px) {
  .category-grid, .column-grid, .column-list-grid, .column-list-grid.compact, .sitemap-grid, .admin-metrics { grid-template-columns: 1fr; }
  .category-tile { min-height: 185px; }
  .column-list-grid { margin-top: 20px; }
  .article-author { grid-template-columns: 1fr; }
}

/* Browser-local utility suite */
.tools-hub-hero { padding: 58px 0 48px; background: var(--ink); color: white; }
.tools-hub-hero .breadcrumbs { color: #9eacbc; }
.tools-hub-hero h1 { max-width: 900px; margin: 12px 0 18px; font-size: clamp(3rem, 7vw, 6.4rem); line-height: 1; letter-spacing: -.075em; }
.tools-hub-hero > .page-wrap > p { max-width: 760px; color: #bac5d2; font-size: 1.05rem; }
.privacy-banner { display: flex; gap: 18px; align-items: center; margin-top: 28px; padding: 17px 20px; border: 1px solid rgba(200,255,46,.34); background: rgba(200,255,46,.08); }
.privacy-banner b { color: var(--lime); white-space: nowrap; }
.privacy-banner span { color: #dbe4ee; font-size: .9rem; }
.tool-directory { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tool-directory-card { min-height: 150px; display: grid; grid-template-columns: 72px 1fr auto; gap: 16px; align-items: center; padding: 22px; border: 1px solid var(--line); background: white; transition: transform .15s, border-color .15s, box-shadow .15s; }
.tool-directory-card:hover { transform: translateY(-3px); border-color: var(--blue); box-shadow: var(--shadow); }
.tool-directory-card > span { width: 66px; height: 66px; display: grid; place-items: center; border-radius: 15px; background: var(--ink); color: var(--lime); font-size: .72rem; font-weight: 950; text-align: center; }
.tool-directory-card h3 { margin: 0 0 6px; font-size: 1.05rem; letter-spacing: -.03em; }
.tool-directory-card p { margin: 0; color: var(--muted); font-size: .84rem; line-height: 1.55; }
.tool-directory-card > b { color: var(--blue); font-size: 1.25rem; }
.utility-workspace { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 18px; align-items: stretch; }
.utility-form, .utility-result { padding: 26px; border: 1px solid var(--line); background: white; box-shadow: var(--shadow); }
.utility-form { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 15px; align-content: start; }
.utility-form label { display: grid; gap: 7px; color: #334156; font-size: .875rem; font-weight: 800; }
.utility-form label.wide, .utility-form .wide, .utility-form > .primary-button, .utility-form > .tool-status { grid-column: 1 / -1; }
.utility-form input, .utility-form select, .utility-form textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #aeb9c6; border-radius: 7px; background: white; color: var(--ink); }
.utility-form input[type="file"] { padding: 8px; background: var(--surface); }
.utility-form textarea { min-height: 180px; resize: vertical; line-height: 1.65; }
.utility-form .inline-check { display: flex; align-items: center; flex-direction: row; }
.utility-form .inline-check input { width: 20px; min-height: 20px; }
.utility-form .secondary-button { margin: 0; align-self: end; justify-content: center; background: white; }
.repeat-inputs { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.utility-result { min-height: 260px; background: var(--ink); color: white; box-shadow: none; }
.utility-result h2 { margin: 8px 0 18px; font-size: 1.55rem; }
.result-surface { display: grid; gap: 12px; color: #b9c5d3; overflow: auto; }
.result-surface > b { display: block; color: var(--lime); font-size: 1.8rem; line-height: 1.3; }
.result-surface > span { display: block; color: #d6dee8; }
.tool-result-image { width: 100%; max-height: 360px; object-fit: contain; background: white; }
.result-download { display: block; padding: 10px 12px; border: 1px solid rgba(255,255,255,.22); border-radius: 6px; color: white; font-weight: 800; }
.result-download:hover { border-color: var(--lime); color: var(--lime); }
.seo-guide { width: min(100%, 820px); margin: 0 auto; padding-bottom: 24px; }
.seo-guide p, .seo-guide li { color: #39495e; }
.preview-table { width: 100%; min-width: 480px; border-collapse: collapse; background: white; color: var(--ink); font-size: .78rem; }
.preview-table th, .preview-table td { padding: 8px; border: 1px solid var(--line); text-align: left; }
.preview-table th { background: var(--surface); }

@media (max-width: 900px) {
  .tool-directory { grid-template-columns: repeat(2, 1fr); }
  .utility-workspace { grid-template-columns: 1fr; }
  .utility-result { min-height: 180px; }
}

@media (max-width: 620px) {
  .tools-hub-hero h1 { font-size: 3rem; }
  .privacy-banner { align-items: flex-start; flex-direction: column; gap: 4px; }
  .tool-directory { grid-template-columns: 1fr; }
  .tool-directory-card { min-height: 128px; grid-template-columns: 58px 1fr auto; padding: 18px; }
  .tool-directory-card > span { width: 54px; height: 54px; }
  .utility-form { grid-template-columns: 1fr; padding: 18px; }
  .utility-form label.wide, .utility-form .wide, .utility-form > .primary-button, .utility-form > .tool-status { grid-column: auto; }
  .repeat-inputs { grid-template-columns: 1fr; }
}