/* ============================================================
   FNA 디자인 시스템 문서 사이트 — 사이트 전용 스타일 (v2 · Codeit 구조)
   레이아웃: 틴트 배경 위에 좌측 사이드바(220) + 떠 있는 흰 라운드 시트(24). 시트 안은 단일 컬럼 최대 740, 가운데 정렬.
   상단 바·우측 목차 없음. 색·글꼴·간격은 tokens.css 의 --fna-* 를 참조하고, 사이트 전용 토큰은 --site-* 로 얹는다.
   테마 3상태: :root(라이트) / prefers-dark & :root:not([data-theme=light]) / :root[data-theme=dark]
   ============================================================ */
:root{
  --site-navy:#1b284f;            /* 브랜드 네이비 — 로고·사이드바 활성 항목·해부도 번호 */
  --site-navy-deep:#0c1533;
  --site-tint-1:#eef2f9;          /* 틴트 배경 그라데이션 (네이비를 아주 옅게 섞은 회청색) */
  --site-tint-2:#e6ecf6;
  --site-sheet:#ffffff;           /* 본문 시트 */
  --site-bg:var(--site-sheet);
  --site-surface:#ffffff;
  --site-surface-2:#f4f6fa;
  --site-ink:#111111;             /* 제목 */
  --site-ink-2:#444444;           /* 본문 */
  --site-ink-3:#6a6a6a;           /* 보조 — 흰 바탕 5.4:1 · 틴트 배경 4.7:1 */
  --site-line:#e7eaf0;
  --site-line-2:#cfd5e1;
  --site-grid:#eceff5;            /* 모눈 배경 선 */
  --site-accent:#003d9b;          /* 브랜드 액센트 = primary */
  --site-accent-soft:#dae2ff;
  --site-accent-ink:#003d9b;
  --site-signal:#dc2626;
  --site-do:#166534;--site-do-bg:#d1fae5;
  --site-dont:#ba1a1a;--site-dont-bg:#ffdad6;
  --site-code-bg:#0f1a3a;--site-code-ink:#dbe2f7;
  --site-side-w:220px;
  --site-content-w:740px;
  --site-radius-sheet:24px;
  --site-shadow:0 4px 14px rgba(13,63,165,.05);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --site-tint-1:#0b1220;--site-tint-2:#0f1830;--site-sheet:#131a2c;--site-surface:#131a2c;--site-surface-2:#1a2238;
    --site-ink:#eef1f8;--site-ink-2:#c3c9da;--site-ink-3:#9aa4bd;--site-line:#2b3654;--site-line-2:#3d4a6c;--site-grid:#1e2740;
    --site-accent:#b2c5ff;--site-accent-soft:#0f2f6e;--site-accent-ink:#dae2ff;
    --site-do:#6ee7b7;--site-do-bg:#064e3b;--site-dont:#ffb4ab;--site-dont-bg:#93000a;
    --site-code-bg:#0a1230;
  }
}
:root[data-theme="dark"]{
  --site-tint-1:#0b1220;--site-tint-2:#0f1830;--site-sheet:#131a2c;--site-surface:#131a2c;--site-surface-2:#1a2238;
  --site-ink:#eef1f8;--site-ink-2:#c3c9da;--site-ink-3:#9aa4bd;--site-line:#2b3654;--site-line-2:#3d4a6c;--site-grid:#1e2740;
  --site-accent:#b2c5ff;--site-accent-soft:#0f2f6e;--site-accent-ink:#dae2ff;
  --site-do:#6ee7b7;--site-do-bg:#064e3b;--site-dont:#ffb4ab;--site-dont-bg:#93000a;
  --site-code-bg:#0a1230;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:linear-gradient(160deg,var(--site-tint-1),var(--site-tint-2)) fixed;color:var(--site-ink-2);font-family:var(--fna-font-family);font-size:calc(16px * var(--fna-scale));line-height:1.7;min-height:100vh;overflow-x:hidden;word-break:keep-all;overflow-wrap:anywhere}
img,svg{max-width:100%}
a{color:var(--site-accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:.2em}
code,kbd,pre{font-family:var(--fna-font-family-mono);font-size:.92em}
:where(button,input){font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--fna-focus);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:8px;z-index:200;background:var(--site-navy);color:#fff;padding:.6em 1em;border-radius:8px}
.skip:focus{left:8px}

/* ── 앱 프레임: 사이드바 + 시트 ─────────────────────────────── */
.app{display:grid;grid-template-columns:var(--site-side-w) minmax(0,1fr);min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;display:flex;flex-direction:column;gap:20px;padding:28px 18px 20px 28px;scrollbar-width:thin}
.side__brand{display:inline-flex;width:44px;height:44px;border-radius:12px;flex:none}
.side__brand .fmark{width:44px;height:44px}
.side__nav{flex:1}
.nav__top,.nav__sec summary{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 8px;border-radius:8px;font-size:calc(16px * var(--fna-scale));font-weight:700;color:var(--site-ink);cursor:pointer;user-select:none;list-style:none}
.nav__top{text-decoration:none}
.nav__top:hover,.nav__sec summary:hover{background:rgba(27,40,79,.06);text-decoration:none}
:root[data-theme="dark"] .nav__top:hover,:root[data-theme="dark"] .nav__sec summary:hover{background:rgba(255,255,255,.06)}
.nav__top[aria-current="page"]{color:var(--site-accent)}
.nav__sec summary::-webkit-details-marker{display:none}
.nav__sec summary svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;opacity:.55;transition:transform .15s;flex:none}
.nav__sec[open] summary svg{transform:rotate(180deg)}
.nav__sec ul{list-style:none;margin:0 0 6px;padding:0}
.nav__sec li a{display:block;padding:6px 8px;border-radius:6px;color:var(--site-ink-3);font-size:calc(14px * var(--fna-scale));font-weight:500;line-height:1.45}
.nav__sec li a:hover{color:var(--site-ink);text-decoration:none;background:rgba(27,40,79,.05)}
.nav__sec li a[aria-current="page"]{color:var(--site-navy);font-weight:800}
:root[data-theme="dark"] .nav__sec li a[aria-current="page"]{color:var(--site-accent)}
.side__tools{display:flex;align-items:center;gap:4px;padding-top:12px;border-top:1px solid rgba(27,40,79,.1)}
:root[data-theme="dark"] .side__tools{border-color:rgba(255,255,255,.1)}
:root[data-theme="dark"] .side__brand,:root[data-theme="dark"] .mtop__brand .fmark{box-shadow:0 0 0 1px rgba(255,255,255,.14);border-radius:6px}
.tool{display:inline-grid;place-items:center;width:36px;height:36px;border:0;border-radius:8px;background:transparent;color:var(--site-ink-2);cursor:pointer}
.tool:hover{background:rgba(27,40,79,.08);color:var(--site-ink)}
:root[data-theme="dark"] .tool:hover{background:rgba(255,255,255,.08)}
.tool svg{stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tool--text{width:auto;padding:0 6px;font-size:11px;font-weight:700;letter-spacing:-.02em;gap:1px;grid-auto-flow:column;align-items:baseline}
.tool--text b{font-size:16px;font-weight:900}
.tool--text[aria-pressed="true"]{background:var(--site-navy);color:#fff}
.side__ver{margin-left:auto;font-size:11px;font-weight:700;color:var(--site-ink-3)}
.i-sun,.i-moon,.i-auto{display:none}
:root:not([data-theme]) .i-auto{display:block}
:root[data-theme="light"] .i-sun{display:block}
:root[data-theme="dark"] .i-moon{display:block}

/* 폰 상단 띠 (데스크톱 숨김) */
.mtop{display:none;position:sticky;top:0;z-index:60;align-items:center;justify-content:space-between;height:52px;padding:0 6px 0 16px;background:var(--site-tint-1);border-bottom:1px solid var(--site-line)}
.mtop__brand{display:inline-flex;align-items:center;gap:10px;color:var(--site-ink);font-weight:500;font-size:15px}
.mtop__brand b{font-weight:800}
.mtop__brand .fmark{width:28px;height:28px}
.tool--menu{width:44px;height:44px}

/* 시트 */
.sheet{margin:12px 12px 12px 0;background:var(--site-sheet);border-radius:var(--site-radius-sheet);padding:72px clamp(24px,5vw,64px) 88px;min-height:calc(100vh - 24px);min-width:0}
.article{max-width:var(--site-content-w);margin:0 auto;min-width:0}

/* ── 페이지 머리·꼬리 ─────────────────────────────────────── */
.pg-head{margin:0 0 40px}
.article h1{margin:0 0 20px;font-size:calc(46px * var(--fna-scale));line-height:1.15;font-weight:900;letter-spacing:-.03em;color:var(--site-ink);text-wrap:balance}
.pg-lead{margin:0;font-size:calc(16px * var(--fna-scale));color:var(--site-ink-2);line-height:1.75;max-width:64ch}
.pg-lead+.pg-lead{margin-top:8px}
.pg-preview{position:relative;min-height:300px;margin:0 0 56px;padding:36px 32px;border:1px solid var(--site-line);border-radius:20px;background:var(--site-surface);display:grid;place-items:center;overflow:hidden}
.pg-preview>*{max-width:100%}
.pg-rule{border:0;border-top:1px solid var(--site-line);margin:0 0 64px}
.pg-foot{margin-top:40px;padding-top:16px;border-top:1px solid var(--site-line);font-size:12.5px;color:var(--site-ink-3);display:flex;flex-wrap:wrap;gap:4px 14px}
.pg-foot code{font-size:.95em}
.pg-status{font-size:11px;font-weight:800;padding:2px 8px;border-radius:999px}
.pg-status--stable{background:var(--fna-success-container);color:var(--fna-success-on-container)}
.pg-status--draft{background:var(--fna-warning-container);color:var(--fna-warning-on-container)}
.pg-status--proposed{background:var(--fna-review-container);color:var(--fna-review-on-container)}

/* ── 본문 타이포그래피 ─────────────────────────────────────── */
.article h2:not([class]){margin:72px 0 20px;font-size:calc(32px * var(--fna-scale));line-height:1.25;font-weight:800;letter-spacing:-.025em;color:var(--site-ink);scroll-margin-top:24px;text-wrap:balance}
.pg-rule+h2,.pg-head+h2{margin-top:0}
.article h3:not([class]){margin:40px 0 12px;font-size:calc(20px * var(--fna-scale));font-weight:800;letter-spacing:-.01em;color:var(--site-ink);scroll-margin-top:24px}
.article h4:not([class]){margin:24px 0 8px;font-size:calc(16px * var(--fna-scale));font-weight:800;color:var(--site-ink)}
.article p{margin:0 0 16px;max-width:70ch}
.article ul,.article ol{margin:0 0 20px;padding-left:1.2em;max-width:70ch}
.article li{margin:6px 0}
.article li::marker{color:var(--site-ink-3)}
.article hr{border:0;border-top:1px solid var(--site-line);margin:40px 0}
.article blockquote{margin:0 0 16px;padding:12px 16px;border-left:4px solid var(--site-accent);background:var(--site-surface-2);border-radius:0 8px 8px 0;color:var(--site-ink-2)}
.article pre{margin:0 0 20px;padding:16px 18px;background:var(--site-code-bg);color:var(--site-code-ink);border-radius:12px;overflow:auto;font-size:12.5px;line-height:1.6;tab-size:2}
.article pre code{font-size:inherit;color:inherit}
.article :not(pre)>code{padding:.1em .4em;border-radius:4px;background:var(--site-surface-2);color:var(--site-ink);font-size:.88em}
.article kbd{padding:.1em .45em;border:1px solid var(--site-line-2);border-bottom-width:2px;border-radius:4px;background:var(--site-surface);font-size:.85em}
.table-scroll table,.article>table{width:100%;border-collapse:collapse;font-size:calc(14px * var(--fna-scale));margin:0 0 20px;background:var(--site-surface);line-height:1.55}
.table-scroll th,.article>table th{text-align:left;padding:10px 12px;background:var(--site-surface-2);color:var(--site-ink-2);font-weight:800;border-bottom:1px solid var(--site-line);white-space:nowrap;font-size:.92em}
.table-scroll td,.article>table td{padding:10px 12px;border-bottom:1px solid var(--site-line);vertical-align:top}
.table-scroll tr:last-child td,.article>table tr:last-child td{border-bottom:0}
.table-scroll{overflow-x:auto;margin:0 0 20px;border:1px solid var(--site-line);border-radius:12px;background:var(--site-surface)}
.table-scroll table{margin:0;overflow-wrap:normal}
.table-scroll td,.table-scroll th{overflow-wrap:normal}
.article table.spec td:first-child{font-weight:700;white-space:nowrap;color:var(--site-ink)}
.article table.spec td.n{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.article table.mini{font-size:.9em}
.table-scroll table code{white-space:nowrap}
.table-scroll td:first-child{min-width:6em}
.article .swatch code,.article .sc-cell code{background:none;color:inherit;padding:0}

/* 메트릭(시그니처 큰 숫자) */
.metric{display:inline-block;font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:-.035em;line-height:1.1;font-size:calc(56px * var(--fna-scale));color:var(--site-ink)}
.metric .unit{font-size:.42em;font-weight:700;letter-spacing:0;color:var(--site-ink-3);margin-left:.08em;vertical-align:.22em}
.metric--ok{color:var(--fna-success-text)}.metric--alarm{color:var(--fna-danger-text)}.metric--caution{color:var(--fna-warning-text)}
.metric--xl{font-size:calc(88px * var(--fna-scale))}

/* 콜아웃 박스 */
.note,.warn,.tip{margin:0 0 20px;padding:12px 16px 12px 44px;border-radius:12px;border:1px solid;position:relative;font-size:.95em}
.note::before,.warn::before,.tip::before{position:absolute;left:14px;top:13px;font-weight:900;font-size:13px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center}
.note{background:var(--fna-info-container);border-color:var(--fna-primary);color:var(--fna-info-on-container)}
.note::before{content:'i';background:var(--fna-primary);color:#fff}
.warn{background:var(--fna-warning-container);border-color:var(--fna-warning);color:var(--fna-warning-on-container)}
.warn::before{content:'!';background:var(--fna-warning);color:#fff}
.tip{background:var(--site-surface-2);border-color:var(--site-line);color:var(--site-ink-2)}
.tip::before{content:'→';background:var(--site-surface);color:var(--site-ink)}
.note p,.warn p,.tip p{margin:0}
.note p+p,.warn p+p,.tip p+p{margin-top:6px}

/* ── 절 구분 · 로더 · F 심볼 ─────────────────────────────────── */
.divider{display:flex;justify-content:center;margin:48px 0}
.divider svg rect{fill:var(--site-line-2)}
.loader{display:inline-flex;align-items:center;gap:12px;color:var(--site-ink-3);font-weight:700}
.fna-banner .loader,.fna-btn .loader{color:inherit}
.loader svg rect{fill:var(--site-accent);opacity:.25;animation:ld 1.2s infinite}
.loader svg .l2{animation-delay:.2s}.loader svg .l3{animation-delay:.4s}
@keyframes ld{0%,100%{opacity:.25}40%{opacity:1}}
@media (prefers-reduced-motion:reduce){.loader svg rect{animation:none;opacity:.7}}
.fmark{display:inline-block;vertical-align:middle;flex:none}
.fmark__bg{fill:var(--site-navy)}
.fmark__bars{fill:#fff}
.fmark--bars .fmark__ink{fill:var(--site-navy)}
:root[data-theme="dark"] .fmark--bars .fmark__ink{fill:#fff}
.fmark--mono{color:currentColor}.fmark--mono .fmark__cut{fill:var(--site-surface)}

/* 모눈 배경 (공식 카드 · 컴포넌트 미니어처) */
.grid-bg{background-color:var(--site-surface);background-image:linear-gradient(var(--site-grid) 1px,transparent 1px),linear-gradient(90deg,var(--site-grid) 1px,transparent 1px);background-size:24px 24px;background-position:center}
.formula{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;min-height:180px;margin:0 0 40px;padding:36px 24px;border:1px solid var(--site-line);border-radius:16px}
.formula::before{content:'';position:absolute;inset:0;border-radius:inherit;background:radial-gradient(ellipse at center,transparent 40%,var(--site-surface) 100%);pointer-events:none}
.formula>*{position:relative}
.formula__tok{display:flex;flex-direction:column;align-items:center;gap:8px}
.formula__tok>b{display:block;padding:10px 22px;border-radius:14px;background:var(--site-surface-2);color:var(--site-ink);font-size:calc(38px * var(--fna-scale));font-weight:800;letter-spacing:-.02em;line-height:1.1}
.formula__tok>small{font-size:12px;font-weight:700;color:var(--site-accent)}
.formula__sep{font-size:38px;font-weight:800;color:var(--site-ink);padding-bottom:26px}
.formula__pre{font-size:38px;font-weight:800;color:var(--site-ink);padding-bottom:26px;letter-spacing:-.02em}

/* 색 띠 (13단) */
.band{display:grid;grid-template-columns:88px minmax(0,1fr);gap:12px;align-items:start;margin:0 0 32px}
.band__name{font-size:13px;font-weight:800;color:var(--site-ink);padding-top:2px}
.band__row{display:grid;grid-template-columns:repeat(var(--n,13),minmax(0,1fr));height:64px;border-radius:8px;overflow:hidden;border:1px solid rgba(0,0,0,.06)}
.band__row i{display:block;position:relative}
.band__row i.is-token::after{content:'';position:absolute;left:50%;bottom:6px;width:6px;height:6px;border-radius:50%;background:#fff;transform:translateX(-50%);box-shadow:0 0 0 1px rgba(0,0,0,.35)}
.band__labels{display:grid;grid-template-columns:repeat(var(--n,13),minmax(0,1fr));margin-top:8px;font-size:11px;line-height:1.3}
.band__labels span{min-width:0;overflow:hidden}
.band__labels b{display:block;font-weight:800;color:var(--site-ink)}
.band__labels code{display:block;font-size:9px;color:var(--site-ink-3);background:none;padding:0;letter-spacing:-.02em}
.band__note{grid-column:2;font-size:12px;color:var(--site-ink-3);margin-top:-20px}
.band--wide .band__row{height:56px}

/* ── 홈 ──────────────────────────────────────────────────────── */
.home-banner{position:relative;height:260px;margin:0 0 56px;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,#e9eef8 0%,#dfe7f5 55%,#d3ddf0 100%)}
:root[data-theme="dark"] .home-banner{background:linear-gradient(135deg,#182242 0%,#1a2a55 60%,#1b284f 100%)}
.home-banner svg{position:absolute;inset:0;width:100%;height:100%}
.home-banner .hb-bar{fill:#fff;opacity:.9}
:root[data-theme="dark"] .home-banner .hb-bar{fill:#b2c5ff;opacity:.85}
.home-banner .hb-shadow{fill:var(--site-navy);opacity:.06}
/* 배너: 회사 심볼이 왼쪽에서 오른쪽으로 흘러간다 (gif 대신 CSS 애니메이션 — 선명하고 테마를 따른다) */
.home-banner .hb-drift{opacity:var(--op,.8);animation:hbDrift var(--dur,36s) linear infinite;animation-delay:var(--delay,0s);will-change:transform}
.home-banner .hb-bob{animation:hbBob var(--bd,7s) ease-in-out infinite alternate}
.home-banner .fmark--mono{color:var(--site-navy)}
:root[data-theme="dark"] .home-banner .fmark--mono{color:#b2c5ff}
@keyframes hbDrift{from{transform:translate(-120px,var(--y,0px))}to{transform:translate(860px,var(--y,0px))}}
@keyframes hbBob{from{transform:translateY(-5px)}to{transform:translateY(5px)}}
@media (prefers-reduced-motion:reduce){.home-banner .hb-drift{animation-duration:0s;transform:translate(calc(var(--delay,0s) * -1 * 10px + 400px),var(--y,0px))}.home-banner .hb-bob{animation:none}}
.home-hero{text-align:center;margin:0 auto 56px;max-width:640px}
.home-hero h1{margin:0 0 20px;font-size:calc(48px * var(--fna-scale));line-height:1.2;letter-spacing:-.035em;text-wrap:balance}
.home-hero p{margin:0 auto;font-size:calc(16px * var(--fna-scale));line-height:1.8;color:var(--site-ink-2);max-width:56ch}
.sec-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:0 0 96px}
.sec-card:last-child:nth-child(odd){grid-column:1/-1}
.sec-card{display:flex;flex-direction:column;justify-content:space-between;min-height:150px;padding:22px 24px;border:1px solid var(--site-line);border-radius:16px;background:var(--site-surface);color:var(--site-ink);transition:border-color .15s,transform .15s}
.sec-card:hover{text-decoration:none;border-color:var(--site-accent);transform:translateY(-2px)}
.sec-card svg{width:28px;height:28px;stroke:var(--site-ink);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.sec-card__foot{display:flex;align-items:center;justify-content:space-between;gap:12px}
.sec-card__foot b{font-size:calc(18px * var(--fna-scale));font-weight:700;letter-spacing:-.01em}
.sec-card__foot small{font-size:12px;font-weight:700;color:var(--site-ink-3);margin-left:6px;padding:2px 8px;border-radius:999px;background:var(--site-surface-2)}
.sec-card__arrow{font-size:22px;line-height:1;color:var(--site-ink);flex:none}
.principles{display:flex;flex-wrap:wrap;justify-content:center;gap:36px 24px;margin:8px 0 96px}
.principle{text-align:center;flex:0 0 calc(33.333% - 16px);min-width:0}
.principle__orb{width:124px;height:124px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 50% 40%,#f2f5fb 0%,#dfe7f5 70%,#d3ddf0 100%);position:relative}
.principle__orb::before{content:'';position:absolute;inset:0;border-radius:50%;background:repeating-radial-gradient(circle at center,transparent 0 22px,rgba(27,40,79,.06) 22px 23px)}
:root[data-theme="dark"] .principle__orb{background:radial-gradient(circle at 50% 40%,#233058 0%,#1b284f 70%,#16213f 100%)}
.principle__orb svg.ico{width:52px;height:52px;position:relative;fill:none;stroke:var(--fna-brand-navy,#1b284f);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
:root[data-theme="dark"] .principle__orb svg.ico{stroke:#b2c5ff}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .principle__orb svg.ico{stroke:#b2c5ff}}
.principle small{display:block;font-size:12px;font-weight:700;color:var(--site-accent);margin-bottom:8px}
.principle p{margin:0 auto;font-size:calc(16px * var(--fna-scale));font-weight:700;color:var(--site-ink);line-height:1.55;max-width:26ch;text-wrap:balance}

/* 컴포넌트 인덱스 (2열, 모눈 위 미니어처) */
.comp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px;margin:0 0 40px}
.comp-card{display:block;color:var(--site-ink)}
.comp-card:hover{text-decoration:none}
.comp-card__stage{position:relative;height:230px;border:1px solid var(--site-line);border-radius:14px;display:grid;place-items:center;overflow:hidden;padding:20px;transition:border-color .15s}
.comp-card:hover .comp-card__stage{border-color:var(--site-accent)}
.comp-card__stage>*{max-width:100%;zoom:.86}
.comp-card b{display:block;margin-top:12px;font-size:calc(16px * var(--fna-scale));font-weight:700}
.mini{pointer-events:none;text-align:left}
.mini .fna-card,.mini .fna-banner{margin:0}
.mini .fna-toast{position:static;transform:none;opacity:1}
.mini .fna-bottom-nav>span{display:flex;flex-direction:column;align-items:center;gap:3px;padding:4px 10px;font-size:var(--fna-font-size-xs);color:var(--fna-text-muted);min-width:56px}
.mini .fna-bottom-nav>span.is-active{color:var(--fna-primary);font-weight:var(--fna-font-weight-extrabold)}
.mini .fna-bottom-nav>span svg{width:22px;height:22px}
.mini .fna-pager__list li>span:not(.ellipsis){display:inline-grid;place-items:center;min-width:32px;height:32px;padding:0 6px;border-radius:8px;font-size:13px;font-weight:700;color:var(--fna-text-secondary)}
.mini .fna-pager__list li>span[aria-current]{background:var(--fna-primary);color:var(--fna-primary-on)}

/* 아이콘 (MaterialCommunityIcons 글리프) */
@font-face{font-family:'MDI';src:url('fonts/MaterialCommunityIcons.ttf') format('truetype');font-display:swap}
.mdi{font-family:'MDI';font-style:normal;font-weight:400;line-height:1;display:inline-block;speak:never;-webkit-font-smoothing:antialiased}
.icon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:6px;margin:0 0 24px;padding:16px;border:1px solid var(--site-line);border-radius:16px;background:var(--site-surface)}
.icon-grid div{display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 4px 10px;border-radius:10px;font-size:10.5px;line-height:1.25;color:var(--site-ink-3);text-align:center;min-width:0}
.icon-grid div:hover{background:var(--site-surface-2)}
.icon-grid .mdi{font-size:26px;color:var(--site-ink)}
.icon-grid code{background:none;padding:0;font-size:10px;color:inherit;word-break:break-all}
.icon-cloud{display:grid;grid-template-columns:repeat(6,64px);gap:28px 36px;justify-content:center}
.icon-cloud .mdi{font-size:44px;color:var(--site-line-2);display:grid;place-items:center;width:64px;height:64px}
.icon-cloud .is-focus{color:var(--site-ink);position:relative}
.icon-cloud .is-focus::after{content:'';position:absolute;inset:-6px;border:2px solid var(--site-ink);border-radius:50%}
.icon-24{display:grid;place-items:center;margin:0 auto}

/* ── 데모 프레임 ─────────────────────────────────────────────── */
.demo{margin:0 0 28px;border:1px solid var(--site-line);border-radius:16px;overflow:hidden;background:var(--site-surface)}
.demo__title{padding:10px 16px;font-size:12px;font-weight:800;letter-spacing:.04em;color:var(--site-ink-3);border-bottom:1px solid var(--site-line);background:var(--site-surface)}
.demo__stage{padding:28px;background:var(--fna-bg);overflow-x:auto}
.demo--bg-surface .demo__stage{background:var(--fna-surface)}
.demo--bg-navy .demo__stage{background:var(--site-navy-deep)}
.demo--bg-side .demo__stage{background:var(--fna-side-bg)}
.demo__inner{position:relative;min-width:0}
.demo__inner,.anatomy__stage,.mini,.pg-preview,.dd__stage,.comp-card__stage{overflow-wrap:normal} /* 예시 안에서는 단어 중간에서 끊지 않는다 */
.demo__inner>.fna-card:last-child,.demo__inner>.fna-banner:last-child{margin-bottom:0}
.demo--tall .demo__inner{min-height:300px}
.demo--phone .demo__stage{display:flex;justify-content:center}
.demo--phone .demo__inner{width:360px;max-width:100%;min-height:560px;background:var(--fna-bg);border:8px solid var(--site-navy-deep);border-radius:28px;overflow:hidden;box-shadow:var(--fna-shadow-modal);display:flex;flex-direction:column}
.demo--phone .demo__inner>.fna-appbar{flex:none}
.demo--phone .phone__body{flex:1;padding:var(--fna-space-lg);overflow:auto;position:relative}
.demo--wide .demo__stage{padding:0}
.demo__inner .fna-modal,.demo__inner .fna-drawer,.demo__inner .fna-bottom-nav,.demo__inner .fna-toast{position:absolute}
.demo__inner .fna-modal,.demo__inner .fna-drawer{inset:0}
.demo__inner .fna-toast:not([id]){opacity:1;pointer-events:auto}
.demo--modal .demo__inner{min-height:360px}
.demo__code{border-top:1px solid var(--site-line)}
.demo__code summary{padding:8px 16px;font-size:12px;font-weight:800;color:var(--site-ink-3);cursor:pointer;user-select:none;letter-spacing:.04em}
.demo__code summary:hover{color:var(--site-ink);background:var(--site-surface-2)}
.demo__code pre{margin:0;border-radius:0}

/* Do / Don't */
.dodont{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:0 0 28px}
.dd{border:1px solid var(--site-line);border-radius:16px;overflow:hidden;background:var(--site-surface);display:flex;flex-direction:column;min-width:0}
.dd__stage{padding:20px;background:var(--fna-bg);flex:1;min-height:110px;overflow:auto}
.dd__stage>.fna-card:last-child{margin-bottom:0}
.dd__stage pre{white-space:pre-wrap;word-break:break-all}
.dd__cap{padding:10px 14px;font-size:13.5px;border-top:3px solid;line-height:1.45}
.dd__cap b{display:inline-block;margin-right:6px;font-size:11px;letter-spacing:.06em;padding:1px 8px;border-radius:999px;color:#fff}
.dd__cap span{display:block;color:var(--site-ink-3);font-size:.9em;margin-top:2px}
.dd--do .dd__cap{border-color:var(--site-do)}.dd--do .dd__cap b{background:var(--site-do)}
.dd--dont .dd__cap{border-color:var(--site-dont)}.dd--dont .dd__cap b{background:var(--site-dont)}
:root[data-theme="dark"] .dd__cap b{color:var(--site-sheet)}

/* 해부도: 번호는 예시 위가 아니라 좌우 거터에, 대상 요소는 점선 상자 + 안내선으로 잇는다 (site.js initAnatomy) */
.anatomy{position:relative;margin:0 0 20px;padding:28px 48px;border:1px solid var(--site-line);border-radius:16px;background:var(--fna-bg);overflow-x:auto}
.anatomy__stage{position:relative;display:inline-block;min-width:min(100%,320px);vertical-align:top}
.anatomy__stage>.fna-card{margin-bottom:0}
.anatomy__lines{position:absolute;left:0;top:0;pointer-events:none;overflow:visible;z-index:1}
.anatomy__lines line{stroke:var(--site-navy);stroke-width:1;stroke-dasharray:3 3;opacity:.75}
.anatomy__lines rect{fill:none;stroke:var(--site-navy);stroke-width:1;stroke-dasharray:3 3;opacity:.6}
:root[data-theme="dark"] .anatomy__lines line,:root[data-theme="dark"] .anatomy__lines rect{stroke:var(--fna-primary)}
.an-ref{display:none}
.callout{position:absolute;left:var(--x);top:var(--y);width:22px;height:22px;border-radius:50%;background:var(--site-navy);color:#fff;font-size:12px;font-weight:900;display:grid;place-items:center;transform:translate(-50%,-50%);box-shadow:0 0 0 2px var(--fna-bg);z-index:2;pointer-events:none}
:root[data-theme="dark"] .callout{background:var(--fna-primary);color:var(--fna-primary-on)}
.anatomy-list{counter-reset:an;list-style:none;padding:0;margin:0 0 28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px 20px;max-width:none!important}
.anatomy-list li{counter-increment:an;display:grid;grid-template-columns:22px 1fr;column-gap:10px;align-items:start;margin:0;font-size:.95em}
.anatomy-list li::before{grid-row:1/3;content:counter(an);width:22px;height:22px;border-radius:50%;background:var(--site-navy);color:#fff;font-size:12px;font-weight:900;display:grid;place-items:center;margin-top:3px}
:root[data-theme="dark"] .anatomy-list li::before{background:var(--fna-primary);color:var(--fna-primary-on)}
.anatomy-list li b,.anatomy-list li span{grid-column:2;min-width:0}
.anatomy-list li b{display:block;color:var(--site-ink)}
.anatomy-list li span{color:var(--site-ink-3);font-size:.92em}

/* 토큰 표 · 스케일 */
.tk-table{width:100%;border-collapse:collapse;font-size:13px}
.tk-name code{white-space:nowrap}
.tk-val{white-space:nowrap}
.tk-val code{font-size:.85em;color:var(--site-ink-2)}
.tk-sw{display:inline-block;width:18px;height:18px;border-radius:5px;vertical-align:middle;margin-right:8px;border:1px solid rgba(0,0,0,.12);box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.tk-missing{color:var(--fna-error-text);font-size:.85em}
.tk-ratio{white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--site-ink-2)}
.tk-use{min-width:180px}
.sc{margin:0 0 24px}
.sc figcaption{font-size:12px;font-weight:800;letter-spacing:.04em;color:var(--site-ink-3);margin-bottom:8px}
.sc-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(72px,1fr));gap:6px}
.sc-cell{font-size:11px;line-height:1.35;color:var(--site-ink-3);min-width:0}
.sc-cell b{display:block;color:var(--site-ink);margin-top:6px}
.sc-cell code{display:block;font-size:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sc-sw{display:block;height:48px;border-radius:8px;background:var(--l);border:1px solid rgba(0,0,0,.08)}
:root[data-theme="dark"] .sc-sw{background:var(--d)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .sc-sw{background:var(--d)}}
.sc-dark{color:var(--site-ink-3)}
.swatch-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:0 0 24px}
.swatch{border-radius:12px;padding:14px 12px;min-height:96px;display:flex;flex-direction:column;justify-content:flex-end;font-size:12px;line-height:1.4;border:1px solid rgba(0,0,0,.08);min-width:0}
.swatch b{font-size:13px}.swatch code{font-size:11px;opacity:.85;overflow:hidden;text-overflow:ellipsis}
.swatch--big{min-height:160px}

/* 카드 그리드 */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 28px}
.card-link{display:flex;flex-direction:column;gap:6px;padding:20px;border:1px solid var(--site-line);border-radius:16px;background:var(--site-surface);color:inherit;transition:border-color .15s,transform .15s;min-width:0}
a.card-link:hover{text-decoration:none;border-color:var(--site-accent);transform:translateY(-2px)}
.card-link b{font-size:calc(16px * var(--fna-scale));letter-spacing:-.01em;color:var(--site-ink)}
.card-link span{color:var(--site-ink-3);font-size:.9em;line-height:1.55}
.card-link .card-link__n{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--site-accent)}
.card-link svg{width:32px;height:32px}

/* 최근 변경 */
.changes{list-style:none;padding:0;margin:0 0 24px;max-width:none!important;border:1px solid var(--site-line);border-radius:16px;background:var(--site-surface);overflow:hidden}
.changes li{display:grid;grid-template-columns:100px 1fr;gap:12px;padding:12px 18px;margin:0;border-bottom:1px solid var(--site-line);font-size:.95em}
.changes li:last-child{border-bottom:0}
.changes time{font-variant-numeric:tabular-nums;color:var(--site-ink-3);font-size:.9em}
.changes .tag{display:inline-block;font-size:10.5px;font-weight:800;padding:1px 7px;border-radius:999px;margin-right:6px;vertical-align:middle;background:var(--site-surface-2);color:var(--site-ink-2)}
.changes .tag--add{background:var(--fna-success-container);color:var(--fna-success-on-container)}
.changes .tag--fix{background:var(--fna-warning-container);color:var(--fna-warning-on-container)}

/* 체크리스트 */
.check{list-style:none;padding:0;max-width:none!important}
.check li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--site-line);margin:0}
.check li::before{content:'';flex:none;width:18px;height:18px;margin-top:4px;border-radius:5px;border:2px solid var(--site-line-2)}
.check li.ok::before{background:var(--fna-success-text);border-color:var(--fna-success-text);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E");background-size:12px;background-position:center;background-repeat:no-repeat}
.check li small{display:block;color:var(--site-ink-3)}

/* 페이저 */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:72px;padding-top:24px;border-top:1px solid var(--site-line)}
.pager a{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid var(--site-line);border-radius:12px;background:var(--site-surface);color:var(--site-ink);min-width:0}
.pager a:hover{border-color:var(--site-accent);text-decoration:none}
.pager small{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--site-ink-3)}
.pager b{font-size:15px}
.pager__next{text-align:right;align-items:flex-end}
.pager__next b::after{content:' →'}.pager__prev b::before{content:'← '}

/* 검색 팔레트 */
.search-dlg{position:fixed;inset:0;z-index:110;display:flex;align-items:flex-start;justify-content:center;padding:12vh 16px 16px;background:var(--fna-overlay)}
.search-dlg[hidden]{display:none}
.search-dlg__panel{width:min(640px,100%);background:var(--site-surface);color:var(--site-ink);border-radius:16px;box-shadow:var(--fna-shadow-modal);padding:10px;max-height:76vh;display:flex;flex-direction:column}
.search{display:flex;align-items:center;gap:10px;height:48px;padding:0 12px 0 14px;border-radius:10px;background:var(--site-surface-2);border:1px solid var(--site-line);color:var(--site-ink);cursor:text}
.search:focus-within{border-color:var(--site-accent)}
.search svg{stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;opacity:.7;flex:none}
.search input{flex:1;min-width:0;background:none;border:0;outline:0;color:inherit;font-size:calc(16px * var(--fna-scale))}
.search input::placeholder{color:var(--site-ink-3)}
.search kbd{font-size:11px;padding:1px 6px;border-radius:4px;border:1px solid var(--site-line-2);color:var(--site-ink-3)}
.search__results{overflow:auto;margin-top:8px;padding:2px}
.search__results a{display:block;padding:10px 12px;border-radius:8px;color:inherit}
.search__results a:hover,.search__results a[aria-selected="true"]{background:var(--site-surface-2);text-decoration:none}
.search__results a small{display:block;color:var(--site-ink-3);font-size:.85em}
.search__results a b{color:var(--site-accent)}
.search__results .search__sec{display:inline-block;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--site-ink-3);margin-right:6px}
.search__results .search__none{padding:14px;color:var(--site-ink-3);text-align:center}

/* 드로어(폰) — 우측에서 */
.drawer{position:fixed;inset:0;z-index:100;display:flex;justify-content:flex-end;background:var(--fna-overlay)}
.drawer[hidden]{display:none}
.drawer__panel{width:min(300px,86vw);height:100%;background:var(--site-surface);color:var(--site-ink);display:flex;flex-direction:column;box-shadow:var(--fna-shadow-modal);padding-top:env(safe-area-inset-top,0px)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 8px 16px;border-bottom:1px solid var(--site-line);font-weight:800}
.drawer__body{flex:1;overflow:auto;padding:12px}
.drawer__body .side__brand{display:none}
.drawer__body .side__tools{margin-top:16px}
@media (prefers-reduced-motion:no-preference){.drawer__panel{animation:dr .2s ease-out}}
@keyframes dr{from{transform:translateX(24px);opacity:.6}to{transform:none;opacity:1}}

/* 히트맵 라벨 · 인쇄 미리보기 · 아이콘 행 · 상태 스트립 · 굵기 · 간격 · 라운드 (문서용 보조) */
.hm-label{font-size:11px;color:var(--fna-chart-tick);display:flex;align-items:center;padding-right:8px;white-space:nowrap}
.hm-label--col{justify-content:center;padding:0 0 4px}
.fna-heatmap i{display:grid;place-items:center;font-size:10px}
.fna-chart--donut svg{display:block}
.paper{background:#fff;color:#111;border:1px solid var(--site-line-2);padding:24px;font-size:12px;line-height:1.5;box-shadow:var(--site-shadow);max-width:640px}
.paper table{border-collapse:collapse;width:100%;background:#fff;color:#111;font-size:11.5px}
.paper th,.paper td{border:1px solid #444;padding:5px 7px;text-align:center}
.paper th{background:#eee;color:#111;font-weight:700}
.paper .sig{height:36px}
.icons{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;margin:0 0 24px}
.icons div{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 6px;border:1px solid var(--site-line);border-radius:12px;background:var(--site-surface);font-size:11px;color:var(--site-ink-2);text-align:center;min-width:0}
.icons svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;color:var(--site-ink)}
.icon-row svg,svg.icon-row{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}
.states{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:0 0 24px}
.states>div{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:14px;border:1px solid var(--site-line);border-radius:12px;background:var(--fna-bg);min-width:0}
.states small{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--site-ink-3)}
.focus-demo{outline:2px solid var(--fna-focus);outline-offset:2px}
.weights{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:0 0 24px}
.weights div{padding:14px;border:1px solid var(--site-line);border-radius:12px;background:var(--site-surface);min-width:0}
.weights big{display:block;font-size:26px;line-height:1.2;letter-spacing:-.02em;color:var(--site-ink)}
.weights small{color:var(--site-ink-3)}
.type-row{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:baseline;padding:8px 0;border-bottom:1px solid var(--site-line)}
.type-row small{color:var(--site-ink-3);font-size:12px}
.space-row{display:flex;align-items:center;gap:14px;padding:6px 0;font-size:13px}
.space-row i{display:block;height:20px;background:var(--site-accent-soft);border:1px dashed var(--site-accent);border-radius:3px}
.space-row code{width:120px}
.radius-row{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 24px}
.radius-row div{width:96px;height:64px;background:var(--site-surface);border:2px solid var(--site-navy);display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--site-ink-2)}
:root[data-theme="dark"] .radius-row div{border-color:var(--fna-primary)}

/* ── 반응형 ──────────────────────────────────────────────────── */
@media (max-width:1023px){
  .app{grid-template-columns:minmax(0,1fr)}
  .side{display:none}
  .mtop{display:flex}
  .sheet{margin:8px;padding:44px clamp(16px,4vw,40px) 64px;min-height:auto;border-radius:20px}
  .article h1{font-size:calc(38px * var(--fna-scale))}
  .article h2{font-size:calc(28px * var(--fna-scale));margin-top:56px}
}
@media (max-width:639px){
  .sheet{padding:32px 16px 56px}
  .table-scroll table{min-width:600px}
  .table-scroll table.mini,.table-scroll table.spec{min-width:480px}
  .article h1{font-size:calc(32px * var(--fna-scale))}
  .article h2{font-size:calc(24px * var(--fna-scale));margin-top:48px}
  .article h3{font-size:calc(18px * var(--fna-scale))}
  .pg-preview{min-height:220px;padding:24px 16px;margin-bottom:40px}
  .pg-rule{margin-bottom:44px}
  .home-banner{height:180px;margin-bottom:36px}
  .home-hero h1{font-size:calc(32px * var(--fna-scale))}
  .sec-cards,.comp-grid{grid-template-columns:1fr}
  .principle{flex-basis:100%}
  .sec-cards{margin-bottom:64px}
  .sec-card{min-height:112px;padding:18px 20px}
  .home-hero p br{display:none}
  .principles{margin-bottom:64px}
  .comp-card__stage{height:190px}
  .band{grid-template-columns:1fr;gap:6px}
  .band__note{grid-column:1;margin-top:0}
  .band__labels code{display:none}
  .band__row{height:48px}
  .formula__tok>b,.formula__sep,.formula__pre{font-size:calc(26px * var(--fna-scale))}
  .formula{min-height:140px;padding:28px 12px}
  .icon-cloud{grid-template-columns:repeat(4,56px);gap:20px 22px}
  .icon-cloud .mdi{font-size:36px;width:56px;height:56px}
  .pager{grid-template-columns:1fr}
  .pager__next{text-align:left;align-items:flex-start}
  .demo__stage{padding:16px}
  .anatomy{padding:24px 40px}
  .changes li{grid-template-columns:1fr;gap:2px}
  .metric{font-size:calc(44px * var(--fna-scale))}
}
@media print{
  .mtop,.side,.pager,.drawer,.search-dlg,.demo__code{display:none!important}
  .app,.sheet{display:block;padding:0;margin:0;min-height:auto}
  body{background:#fff;color:#000}
}

:root[data-scale="large"] .comp-card__stage{height:270px}