/* FutureSystems redesign — 공통 콘텐츠 스타일
 * 각 시안은 아래 토큰만 정의하면 된다.
 * --fs-bg --fs-fg --fs-muted --fs-line --fs-surface --fs-surface-2 --fs-accent --fs-accent-fg --fs-plate
 * --fs-radius --fs-font-body --fs-font-display --fs-font-mono --fs-wrap --fs-header-h
 */
:root {
  --fs-wrap: 1240px; --fs-radius: 14px; --fs-header-h: 72px;
  --fs-gutter: max(16px, env(safe-area-inset-left, 0px));
  --fs-gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
html { scroll-padding-top: calc(var(--fs-header-h) + 64px); -webkit-text-size-adjust: 100%; }
body { background: var(--fs-bg); color: var(--fs-fg); font-family: var(--fs-font-body); font-size: 16px; line-height: 1.65; word-break: keep-all; overflow-wrap: anywhere; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--fs-accent); outline-offset: 3px; border-radius: 4px; }
.fs-wrap { max-width: var(--fs-wrap); margin-inline: auto; padding-left: var(--fs-gutter); padding-right: var(--fs-gutter-r); box-sizing: border-box; width: 100%; }
.fs-skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--fs-accent); color: var(--fs-accent-fg); padding: 8px 14px; border-radius: 8px; }
.fs-skip:focus { left: 16px; }
.fs-loading { color: var(--fs-muted); min-height: 40vh; }

/* 페이지 머리 기본값(시안이 덮어씀) */
.fs-page-head { padding-block: clamp(48px, 8vw, 104px) clamp(24px, 4vw, 48px); }
.fs-eyebrow { font-family: var(--fs-font-mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--fs-accent); margin: 0 0 14px; }
.fs-page-title { font-family: var(--fs-font-display); font-size: clamp(30px, 5vw, 56px); line-height: 1.12; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
.fs-page-lead { color: var(--fs-muted); max-width: 64ch; margin: 18px 0 0; font-size: clamp(15px, 1.6vw, 18px); }
.fs-crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 13px; color: var(--fs-muted); margin: 0 0 20px; }
.fs-crumbs a { text-decoration: none; } .fs-crumbs a:hover { color: var(--fs-fg); }
.fs-crumbs i { font-style: normal; opacity: .45; }

/* 하위 메뉴 */
.fs-subnav { position: sticky; top: calc(var(--fs-header-h) + env(safe-area-inset-top, 0px)); z-index: 20; background: color-mix(in oklab, var(--fs-bg) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--fs-line); }
.fs-subnav-row { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; padding-block: 10px; }
.fs-subnav-row::-webkit-scrollbar { display: none; }
.fs-subnav a { flex: none; text-decoration: none; font-size: 14px; padding: 7px 14px; border-radius: 999px; color: var(--fs-muted); white-space: nowrap; transition: background .2s, color .2s; }
.fs-subnav a:hover { color: var(--fs-fg); background: var(--fs-surface); }
.fs-subnav a[aria-current="page"] { color: var(--fs-accent-fg); background: var(--fs-accent); }
.fs-subnav-items { border-top: 1px solid var(--fs-line); }
.fs-subnav-items a { font-size: 13px; }

/* ---------- 원본 콘텐츠 재정리 ---------- */
.fs-legacy-wrap { padding-block: clamp(28px, 5vw, 64px) clamp(64px, 9vw, 120px); }
.fs-legacy { min-width: 0; font-size: 16px; }
.fs-legacy .contain { max-width: none; width: auto; padding: 0; margin: 0; }
.fs-legacy .real-cont > * + * { margin-top: clamp(32px, 5vw, 64px); }
.fs-legacy h2, .fs-legacy h3, .fs-legacy h4 { font-family: var(--fs-font-display); letter-spacing: -.01em; line-height: 1.3; text-wrap: balance; }
.fs-legacy h3, .fs-legacy .doc-title { font-size: clamp(24px, 3vw, 34px); margin: 0 0 24px; padding-top: 8px; }
.fs-legacy h4, .fs-legacy .doc-tit { font-size: clamp(18px, 2vw, 22px); margin: 28px 0 14px; }
.fs-legacy .doc-sub-tit { font-weight: 700; margin: 18px 0 8px; }
.fs-legacy .tit { font-weight: 700; font-size: clamp(17px, 1.8vw, 20px); line-height: 1.45; margin: 0 0 10px; }
.fs-legacy .tit2 { font-weight: 700; font-size: 18px; }
.fs-legacy .txt, .fs-legacy .cnt, .fs-legacy .doc-cnt, .fs-legacy .info, .fs-legacy p { color: color-mix(in oklab, var(--fs-fg) 82%, var(--fs-muted)); }
.fs-legacy .txt, .fs-legacy .cnt, .fs-legacy .doc-cnt { max-width: 78ch; }
.fs-legacy strong { color: var(--fs-fg); }
.fs-legacy .text-org, .fs-legacy .text-blue, .fs-legacy .txt-red { color: var(--fs-accent); }
.fs-legacy ul, .fs-legacy ol { padding-left: 1.2em; }
.fs-legacy li + li { margin-top: 4px; }
.fs-legacy hr { border: 0; border-top: 1px solid var(--fs-line); }
.fs-legacy .hide, .fs-legacy .scroll-top, .fs-legacy .scrollTop, .fs-legacy .btn-top, .fs-legacy .top-btn { display: none !important; }
.fs-legacy .section { scroll-margin-top: calc(var(--fs-header-h) + 120px); padding-top: clamp(32px, 5vw, 56px); }
.fs-legacy .section + .section { border-top: 1px solid var(--fs-line); margin-top: clamp(32px, 5vw, 56px); }

/* 원본 이미지는 밝은 판 위에 놓는다(도면·스펙 이미지가 흰 바탕이라 다크 테마에서도 읽힘) */
.fs-legacy img { display: inline-block; vertical-align: middle; border-radius: calc(var(--fs-radius) * .6); }
.fs-legacy .pic img, .fs-legacy .img img, .fs-legacy .prod-img img, .fs-legacy p > img, .fs-legacy .group > p > img, .fs-legacy .prod-img-txt img, .fs-legacy .map-img img, .fs-legacy .photo img,
.fs-legacy .fs-article-img { background: var(--fs-plate); padding: clamp(8px, 1.6vw, 20px); box-sizing: border-box; border-radius: var(--fs-radius); }
.fs-legacy .icon img, .fs-legacy .logo img, .fs-legacy .name img { background: var(--fs-plate); border-radius: 10px; padding: 6px; }
.fs-legacy .fs-img-missing { display: none; }

/* 제품 머리 */
.fs-legacy .prod-head .contain { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(20px, 4vw, 56px); align-items: center; }
.fs-legacy .prod-head .pic { grid-row: span 2; }
.fs-legacy .prod-head .name img { max-height: 64px; width: auto; }
.fs-legacy .prod-head .cnt { font-size: clamp(16px, 1.7vw, 19px); }
.fs-legacy .prod-img-txt .contain { display: grid; gap: 24px; }
.fs-legacy .prod-img-txt .tit { font-size: clamp(19px, 2.2vw, 26px); font-family: var(--fs-font-display); }
.fs-legacy .prod-img-txt .txt ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.fs-legacy .prod-img-txt .txt li { padding: 12px 16px; background: var(--fs-surface); border: 1px solid var(--fs-line); border-radius: 10px; }

/* 원본 탭 → 고정 칩 */
.fs-legacy .sub-tab-menu, .fs-legacy .prod-tab-menu, .fs-legacy .his-tab-menu { position: sticky; top: calc(var(--fs-header-h) + 58px + env(safe-area-inset-top, 0px)); z-index: 15; background: color-mix(in oklab, var(--fs-bg) 90%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 10px 0; border-bottom: 1px solid var(--fs-line); }
.fs-legacy .sub-tab-menu ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.fs-legacy .sub-tab-menu li { margin: 0; flex: none; }
.fs-legacy .sub-tab-menu a { display: block; text-decoration: none; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--fs-line); font-size: 14px; white-space: nowrap; }
.fs-legacy .sub-tab-menu a:hover { border-color: var(--fs-accent); color: var(--fs-accent); }

/* 아이콘 + 설명 목록 */
.fs-legacy .arc-cnt ul, .fs-legacy .itu-vpn-icons, .fs-legacy .part-list, .fs-legacy .service-cnt ul, .fs-legacy .business-area ul, .fs-legacy .platform-process ul {
  list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 12px; margin: 16px 0 28px; }
.fs-legacy .arc-cnt li, .fs-legacy .service-cnt li, .fs-legacy .business-area li { margin: 0; display: flex; gap: 14px; align-items: flex-start; padding: 16px; background: var(--fs-surface); border: 1px solid var(--fs-line); border-radius: var(--fs-radius); }
.fs-legacy .arc-cnt .icon { flex: none; width: 52px; }
.fs-legacy .itu-fw-row, .fs-legacy .prod-row, .fs-legacy .cnt-col, .fs-legacy .col-group { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: clamp(16px, 3vw, 40px); }
.fs-legacy .group, .fs-legacy .col { min-width: 0; }

/* 제품 목록 카드 */
.fs-legacy .prod-list ul, .fs-legacy .prod-detail ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 14px; }
.fs-legacy .prod-list li { margin: 0; }
.fs-legacy .prod-list a { display: block; height: 100%; text-decoration: none; }
.fs-legacy .prod-list .box { height: 100%; box-sizing: border-box; display: flex; flex-direction: column; gap: 12px; padding: 22px; background: var(--fs-surface); border: 1px solid var(--fs-line); border-radius: var(--fs-radius); transition: border-color .2s, transform .2s; }
.fs-legacy .prod-list a:hover .box { border-color: var(--fs-accent); transform: translateY(-2px); }
.fs-legacy .prod-list .logo img { max-height: 44px; width: auto; }
.fs-legacy .prod-list .icon { display: none; }
.fs-legacy .prod-list .cnt br, .fs-legacy .arc-cnt .info br, .fs-legacy .prod-head .cnt br { display: none; }
.fs-legacy .more, .fs-legacy .prod-btn a, .fs-legacy .btn, .fs-legacy .btn-pack { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; font-weight: 600; color: var(--fs-accent); text-decoration: none; }
.fs-legacy .more::after { content: "→"; }
.fs-legacy .btn, .fs-legacy .btn-pack, .fs-legacy .prod-btn a { padding: 10px 16px; border: 1px solid var(--fs-accent); border-radius: 999px; }

/* 표 */
.fs-table-scroll { overflow-x: auto; margin: 16px 0 28px; border: 1px solid var(--fs-line); border-radius: var(--fs-radius); background: var(--fs-surface); }
.fs-legacy table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 14px; font-variant-numeric: tabular-nums; }
.fs-legacy th, .fs-legacy td { padding: 11px 14px; border-bottom: 1px solid var(--fs-line); text-align: left; vertical-align: top; }
.fs-legacy th { background: var(--fs-surface-2); font-weight: 700; white-space: nowrap; }
.fs-legacy tr:last-child td { border-bottom: 0; }
.fs-legacy td p { margin: 0; }

/* 연혁 */
.fs-legacy .history-head .top { font-size: 15px; color: var(--fs-muted); }
.fs-legacy .history-head .tit { font-size: clamp(22px, 3vw, 32px); font-family: var(--fs-font-display); }
.fs-legacy .history .row { display: block; padding: 22px 0; border-top: 1px solid var(--fs-line); }
.fs-legacy .history .col { display: grid; grid-template-columns: minmax(80px, 160px) minmax(0, 1fr); gap: 16px; }
.fs-legacy .history .year { font-family: var(--fs-font-display); font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; color: var(--fs-accent); line-height: 1; font-variant-numeric: tabular-nums; }
.fs-legacy .history ul { list-style: none; padding: 0; margin: 0; }
.fs-legacy .history li { display: flex; gap: 14px; padding: 4px 0; }
.fs-legacy .history .month { flex: none; width: 3.4em; color: var(--fs-muted); font-variant-numeric: tabular-nums; }

/* 상담·연락처 목록 */
.fs-legacy .pro-support, .fs-legacy .pro-support-box { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 14px; }
.fs-legacy .local, .fs-legacy .pro-support-box > * { min-width: 0; }
.fs-legacy .tel, .fs-legacy .mail, .fs-legacy .email { font-variant-numeric: tabular-nums; font-family: var(--fs-font-mono); font-size: 14px; }
.fs-legacy .partner-logo-list ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 150px), 1fr)); gap: 10px; }
.fs-legacy .partner-logo-list li { margin: 0; background: var(--fs-plate); border-radius: 10px; padding: 10px; display: grid; place-items: center; color: #222; }

/* 교육 달력 */
.fs-legacy .cal_text { font-size: 12px; }
.fs-legacy .sun { color: #d64545; } .fs-legacy .sat { color: #3a6fd8; }

/* 반응형 노출 */
.fs-legacy .only-mobile { display: none; }
@media (max-width: 760px) {
  .fs-legacy .only-mobile { display: block; } .fs-legacy .only-desktop-tablet { display: none; }
  .fs-legacy .prod-head .contain { grid-template-columns: 1fr; }
  .fs-legacy .prod-head .pic { grid-row: auto; }
  .fs-legacy .history .col { grid-template-columns: 1fr; gap: 8px; }
  .fs-legacy br { content: ""; }
}

/* ---------- 게시판 ---------- */
.fs-board { padding-block: clamp(28px, 5vw, 56px) clamp(64px, 9vw, 120px); }
.fs-board-count { color: var(--fs-muted); font-size: 14px; margin: 0 0 18px; }
.fs-board-count strong { color: var(--fs-fg); }
.fs-posts { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: clamp(14px, 2vw, 24px); }
.fs-post a { display: flex; flex-direction: column; height: 100%; text-decoration: none; border-radius: var(--fs-radius); overflow: hidden; background: var(--fs-surface); border: 1px solid var(--fs-line); transition: border-color .2s, transform .25s; }
.fs-post a:hover { border-color: var(--fs-accent); transform: translateY(-3px); }
.fs-post-thumb { aspect-ratio: 16 / 9; background: var(--fs-surface-2); display: block; overflow: hidden; max-width: 100%; }
.fs-post-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s; }
.fs-post a:hover .fs-post-thumb img { transform: scale(1.04); }
.fs-post-ph { display: grid; place-items: center; height: 100%; font-family: var(--fs-font-display); font-size: 28px; color: var(--fs-muted); }
.fs-post-body { display: flex; flex-direction: column; gap: 8px; padding: 18px 20px 22px; min-width: 0; }
.fs-post-date { font-family: var(--fs-font-mono); font-size: 12px; color: var(--fs-muted); font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.fs-post-title { font-weight: 700; font-size: 17px; line-height: 1.45; }
.fs-post-excerpt { color: var(--fs-muted); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.fs-pager { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-top: 40px; }
.fs-pager a { min-width: 40px; height: 40px; display: grid; place-items: center; border-radius: 999px; border: 1px solid var(--fs-line); text-decoration: none; font-variant-numeric: tabular-nums; }
.fs-pager a[aria-current="page"] { background: var(--fs-accent); border-color: var(--fs-accent); color: var(--fs-accent-fg); }

.fs-article-wrap { padding-block: clamp(24px, 4vw, 48px) clamp(64px, 9vw, 120px); max-width: 920px; }
.fs-article { font-size: 17px; line-height: 1.8; }
.fs-article img { display: block; margin: 20px auto; background: var(--fs-plate); border-radius: var(--fs-radius); }
.fs-article #file0, .fs-article [id^="file"] { text-align: center; }
.fs-files { margin-top: 40px; padding: 20px; border: 1px solid var(--fs-line); border-radius: var(--fs-radius); background: var(--fs-surface); }
.fs-files h2 { font-size: 14px; margin: 0 0 10px; font-family: var(--fs-font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--fs-muted); }
.fs-files ul { margin: 0; padding-left: 1.1em; }
.fs-article-nav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: stretch; margin-top: 48px; border-top: 1px solid var(--fs-line); padding-top: 24px; }
.fs-article-nav a { text-decoration: none; min-width: 0; }
.fs-article-nav small { display: block; color: var(--fs-muted); font-size: 12px; }
.fs-article-nav span { display: block; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fs-article-next { text-align: right; }
.fs-article-list { align-self: center; padding: 10px 18px; border: 1px solid var(--fs-line); border-radius: 999px; white-space: nowrap; }
@media (max-width: 640px) { .fs-article-nav { grid-template-columns: 1fr; } .fs-article-next { text-align: left; } .fs-article-list { justify-self: start; } }

/* ---------- 다운로드 ---------- */
.fs-downloads { padding-block: clamp(28px, 5vw, 56px) clamp(64px, 9vw, 120px); }
.fs-dls { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.fs-dl { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 20px; align-items: center; padding: 16px; background: var(--fs-surface); border: 1px solid var(--fs-line); border-radius: var(--fs-radius); }
.fs-dl-cover { aspect-ratio: 3 / 4; border-radius: 8px; overflow: hidden; background: var(--fs-plate); display: block; max-width: 100%; }
.fs-dl-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.fs-dl-body { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.fs-dl-body time { font-family: var(--fs-font-mono); font-size: 12px; color: var(--fs-muted); }
.fs-dl-body strong { font-size: 18px; }
.fs-dl-files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.fs-dl-file { display: inline-flex; align-items: center; gap: 8px; max-width: 100%; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--fs-line); text-decoration: none; font-size: 13px; overflow: hidden; text-overflow: ellipsis; }
.fs-dl-file span { flex: none; font-family: var(--fs-font-mono); font-size: 11px; font-weight: 700; padding: 2px 6px; border-radius: 5px; background: var(--fs-surface-2); }
.fs-dl-pdf span { background: var(--fs-accent); color: var(--fs-accent-fg); }
.fs-dl-file em { font-style: normal; color: var(--fs-muted); }
.fs-dl-file:hover { border-color: var(--fs-accent); }
@media (max-width: 560px) { .fs-dl { grid-template-columns: 76px minmax(0, 1fr); gap: 14px; } }

.fs-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; background: var(--fs-accent); color: var(--fs-accent-fg); text-decoration: none; font-weight: 600; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; } }