:root{--bg:#fff;--bg2:#f5f5f7;--tile:#f5f5f7;--text:#1d1d1f;--muted:#6e6e73;--faint:#86868b;--line:#d2d2d7;--accent:#0071e3;--accent-h:#0077ed;--nav:rgba(250,250,252,.82);--panel:#fff;--ad:#fff4e5;--ad-line:#f5a623;--ad-text:#9a5b00;--note:#5e5ce6;--chip:#e8e8ed;--ok:#1b7a3a;--okbg:#eaf7ee;--shadow:0 12px 40px rgba(0,0,0,.14);color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#000;--bg2:#161617;--tile:#1d1d1f;--text:#f5f5f7;--muted:#a1a1a6;--faint:#86868b;--line:#424245;--accent:#2997ff;--accent-h:#47a6ff;--nav:rgba(22,22,23,.82);--panel:#1d1d1f;--ad:#2b2010;--ad-line:#f5a623;--ad-text:#ffcf80;--note:#8f8cff;--chip:#2c2c2e;--ok:#7ee2a0;--okbg:#0f2e1a;--shadow:0 12px 40px rgba(0,0,0,.6);color-scheme:dark}}
:root[data-theme="dark"]{--bg:#000;--bg2:#161617;--tile:#1d1d1f;--text:#f5f5f7;--muted:#a1a1a6;--faint:#86868b;--line:#424245;--accent:#2997ff;--accent-h:#47a6ff;--nav:rgba(22,22,23,.82);--panel:#1d1d1f;--ad:#2b2010;--ad-line:#f5a623;--ad-text:#ffcf80;--note:#8f8cff;--chip:#2c2c2e;--ok:#7ee2a0;--okbg:#0f2e1a;--shadow:0 12px 40px rgba(0,0,0,.6);color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Hiragino Sans","Apple SD Gothic Neo","Noto Sans KR","Noto Sans JP","Segoe UI",Roboto,sans-serif;font-size:17px;line-height:1.47;letter-spacing:-.022em;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
button{font:inherit;cursor:pointer;color:inherit}
:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* nav */
.gnav{position:sticky;top:0;z-index:60;background:var(--nav);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid color-mix(in srgb,var(--line) 55%,transparent)}
.gnav .in{max-width:1080px;margin:0 auto;padding:0 16px;height:48px;display:flex;align-items:center;gap:4px}
.logo{white-space:nowrap;flex-shrink:0;font-weight:600;font-size:19px;letter-spacing:-.03em;color:var(--text);margin-right:auto;display:flex;align-items:center;gap:7px}
.logo:hover{text-decoration:none}
.logo i{width:18px;height:18px;border-radius:5px;background:linear-gradient(135deg,#0071e3,#5e5ce6)}
.navlinks{display:flex;align-items:center;gap:2px}
.navlinks a,.navbtn{color:var(--text);opacity:.82;font-size:12.5px;padding:0 9px;line-height:48px;white-space:nowrap;letter-spacing:-.01em;border:0;background:none}
.navlinks a:hover,.navbtn:hover{opacity:1;text-decoration:none}
.navbtn[aria-expanded="true"]{opacity:1;font-weight:600}
.iconbtn{border:0;background:transparent;opacity:.85;min-width:40px;height:40px;border-radius:10px;display:inline-grid;place-items:center;font-size:12px;gap:4px}
.iconbtn:hover{opacity:1;background:color-mix(in srgb,var(--text) 6%,transparent)}
.langsel{max-width:96px;border:0;background:transparent;font-size:12.5px;opacity:.85;padding:4px;color:var(--text)}
@media (max-width:900px){.navlinks a{display:none}}
/* mega menu */
.mega{position:absolute;left:0;right:0;top:48px;background:var(--panel);border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none;max-height:calc(100vh - 100px);overflow:auto}
.mega.on{display:block}
.mega .in{max-width:1080px;margin:0 auto;padding:28px 16px 36px;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,190px),1fr));gap:22px 24px;height:auto}
.mega h5{margin:0 0 8px;font-size:12px;color:var(--faint);font-weight:600;letter-spacing:0}
.mega a{display:block;color:var(--text);font-size:14px;padding:4px 0;line-height:1.3}
.mega a.more{color:var(--accent);font-size:13px;margin-top:4px}
/* layout */
.container{max-width:1080px;margin:0 auto;padding:0 16px}
/* hero */
.hero{text-align:center;padding:84px 0 44px}
.hero h1{font-size:clamp(40px,7vw,72px);line-height:1.05;letter-spacing:-.035em;margin:0 0 14px;font-weight:700}
.hero p.sub{font-size:clamp(18px,2.4vw,24px);color:var(--muted);margin:0 auto 32px;max-width:720px;line-height:1.32;letter-spacing:-.02em}
.search{max-width:660px;margin:0 auto;position:relative;text-align:left}
.search input{width:100%;font:inherit;font-size:18px;padding:18px 70px 18px 54px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--text);outline:none;box-shadow:0 2px 14px rgba(0,0,0,.06)}
.search input:focus{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 20%,transparent)}
.search .ico{position:absolute;left:20px;top:50%;transform:translateY(-50%);color:var(--faint)}
.search kbd{position:absolute;right:20px;top:50%;transform:translateY(-50%);font:12px/1 ui-monospace,Menlo,monospace;color:var(--faint);border:1px solid var(--line);border-radius:6px;padding:4px 6px}
.results{position:absolute;left:0;right:0;top:calc(100% + 8px);background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;z-index:30;display:none;max-height:430px;overflow-y:auto}
.results a{display:flex;align-items:center;gap:12px;padding:11px 18px;color:var(--text);font-size:16px}
.results a .ic{width:32px;height:32px;border-radius:9px;background:var(--tile);display:grid;place-items:center;font-size:16px;flex:none}
.results a .nm{flex:1;min-width:0}
.results a small{display:block;color:var(--faint);font-size:12.5px}
.results a:hover,.results a.sel{background:var(--bg2);text-decoration:none}
.results .empty{padding:16px 18px;color:var(--muted);font-size:15px}
.drophint{color:var(--faint);font-size:14px;margin:16px 0 0}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.chip{background:var(--chip);color:var(--text);font-size:14px;padding:7px 14px;border-radius:999px;border:0;line-height:1.2;white-space:nowrap}
.chip:hover{text-decoration:none;filter:brightness(.96)}
.chip[aria-pressed="true"]{background:var(--text);color:var(--bg)}
.recent{margin-top:26px}
.recent h3{font-size:13px;color:var(--faint);font-weight:600;margin:0 0 8px;letter-spacing:0}
/* sections */
.sec{padding:72px 0 0}
.sec h2{font-size:clamp(30px,4.6vw,48px);letter-spacing:-.03em;line-height:1.08;margin:0 0 10px;text-align:center}
.sec p.lead{text-align:center;color:var(--muted);font-size:clamp(17px,2vw,21px);margin:0 auto 36px;max-width:640px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:18px}
.step{background:var(--tile);border-radius:22px;padding:28px}
.step .n{width:38px;height:38px;border-radius:50%;background:var(--text);color:var(--bg);display:grid;place-items:center;font-weight:600;margin-bottom:16px}
.step h3{font-size:21px;margin:0 0 6px;letter-spacing:-.02em}
.step p{margin:0;color:var(--muted);font-size:16px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:14px}
.tile{background:var(--tile);border-radius:22px;padding:40px 30px 0;text-align:center;min-height:340px;display:flex;flex-direction:column;align-items:center;overflow:hidden;color:var(--text)}
.tile:hover{text-decoration:none}
.tile .k{font-size:14px;font-weight:600;color:var(--faint);letter-spacing:0}
.tile h3{font-size:clamp(28px,3.6vw,40px);letter-spacing:-.03em;line-height:1.1;margin:6px 0 8px}
.tile p{margin:0 0 12px;color:var(--muted);font-size:18px}
.tile .cta{color:var(--accent);font-size:17px}
.tile .art{margin-top:auto;height:130px;display:grid;place-items:end center;font-size:84px;line-height:1}
.tile.dark{background:#000;color:#f5f5f7}.tile.dark p{color:#a1a1a6}
:root[data-theme="dark"] .tile.dark{background:#2c2c2e}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .tile.dark{background:#2c2c2e}}
/* explorer */
.xbar{position:sticky;top:48px;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);padding:12px 0 10px;border-bottom:1px solid var(--line)}
.xrow{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px 0}
.xrow::-webkit-scrollbar{display:none}
.xrow+.xrow{margin-top:8px}
.xrow .chip{font-size:13px;padding:6px 12px}
.xfilter{display:flex;gap:10px;align-items:center;margin-top:10px}
.xfilter input{flex:1;min-width:0;font:inherit;font-size:15px;padding:9px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text)}
.xfilter span{font-size:13px;color:var(--faint);white-space:nowrap}
.catblock{border-top:1px solid var(--line);padding:28px 0 24px;display:grid;grid-template-columns:230px 1fr;gap:20px}
.catblock:first-child{border-top:0}
.catblock h3{font-size:23px;letter-spacing:-.02em;margin:0 0 4px}
.catblock .ct{color:var(--faint);font-size:14px}
.toolgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,220px),1fr));gap:2px 20px}
.toolgrid a{display:flex;align-items:center;gap:8px;color:var(--text);padding:8px 0;font-size:15px;line-height:1.3}
.toolgrid a:hover{color:var(--accent);text-decoration:none}
.toolgrid a .new{font-size:10px;color:#bf4800;font-weight:700;letter-spacing:.02em}
.flatgrid{padding-top:24px}
@media (max-width:720px){.catblock{grid-template-columns:1fr;gap:8px}}
.band{margin-top:72px;background:var(--bg2);padding:76px 16px;text-align:center}
.band h2{font-size:clamp(30px,4.6vw,48px);letter-spacing:-.03em;line-height:1.08;margin:0 0 12px}
.band p{color:var(--muted);font-size:19px;max-width:660px;margin:0 auto}
.band .lock{font-size:52px;margin-bottom:8px}
.guides{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:16px}
.guide{background:var(--tile);border-radius:18px;padding:24px;color:var(--text)}
.guide:hover{text-decoration:none}
.guide .k{color:var(--faint);font-size:13px}
.guide h4{margin:6px 0 8px;font-size:19px;letter-spacing:-.02em;line-height:1.3}
.guide p{margin:0;color:var(--muted);font-size:14px}
/* footer */
footer{background:var(--bg2);margin-top:88px;padding:24px 0 30px;font-size:12px;color:var(--muted);letter-spacing:-.01em}
.fnote{border-bottom:1px solid var(--line);padding-bottom:14px;margin:0 0 18px;line-height:1.5}
.fcols{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,170px),1fr));gap:18px}
.fcols h5{margin:0 0 8px;font-size:12px;color:var(--text);font-weight:600}
.fcols a{display:block;color:var(--muted);padding:3px 0;font-size:12px}
.fbottom{border-top:1px solid var(--line);margin-top:22px;padding-top:14px;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
.fbottom a{color:var(--muted)}
/* category */
.crumb{font-size:13px;color:var(--faint);padding:18px 0 0}
.crumb a{color:var(--faint)}
.chero{text-align:center;padding:48px 0 24px}
.chero .ic{font-size:60px}
.chero h1{font-size:clamp(36px,6vw,60px);letter-spacing:-.035em;margin:6px 0 10px;line-height:1.05}
.chero p{color:var(--muted);font-size:20px;max-width:680px;margin:0 auto}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:14px;margin-top:22px}
.tcard{background:var(--tile);border-radius:18px;padding:22px;color:var(--text);display:flex;flex-direction:column;gap:6px;min-height:120px}
.tcard:hover{text-decoration:none;transform:translateY(-2px);transition:transform .2s}
.tcard b{font-size:19px;letter-spacing:-.02em;line-height:1.25}
.tcard span{color:var(--muted);font-size:13px;flex:1}
.tcard em{font-style:normal;color:var(--accent);font-size:14px}
.cards .ad-slot{grid-column:1/-1;margin:8px 0}
.cintro{max-width:760px;margin:48px auto 0}
.cintro h2{font-size:28px;letter-spacing:-.02em;margin:0 0 12px}
.cintro p{color:var(--text);line-height:1.65}
/* tool */
.tlayout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
@media (min-width:1280px){.tlayout.has-rail{grid-template-columns:minmax(0,1fr) 300px;max-width:1400px}}
.thead{text-align:center;padding:26px 0 22px}
.thead h1{font-size:clamp(36px,6vw,56px);letter-spacing:-.035em;margin:0 0 8px;line-height:1.05}
.thead p{color:var(--muted);font-size:20px;margin:0 0 14px}
.badge{display:inline-flex;gap:6px;align-items:center;font-size:13px;color:var(--ok);background:var(--okbg);border-radius:999px;padding:5px 12px}
.toolbox{background:var(--tile);border-radius:28px;padding:24px;max-width:860px;margin:0 auto}
.drop{border:2px dashed var(--line);border-radius:20px;padding:40px 20px;text-align:center;background:var(--bg);transition:border-color .2s,background .2s}
.drop.compact{padding:16px;display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap}
.drop.compact .big,.drop.compact h3,.drop.compact p{display:none}
.drop .big{font-size:42px}
.drop h3{margin:8px 0 6px;font-size:21px}
.drop p{margin:0 0 18px;color:var(--muted);font-size:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;background:var(--accent);color:#fff;border-radius:999px;padding:12px 24px;font-size:17px;min-height:44px}
.btn:hover{background:var(--accent-h);text-decoration:none}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn.small{font-size:14px;padding:8px 16px;min-height:36px}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.files{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:8px}
.files li{background:var(--bg);border-radius:14px;padding:10px 12px;display:flex;align-items:center;gap:10px;font-size:15px;border:1px solid transparent}
.files li.dragging{opacity:.5}
.files li.over{border-color:var(--accent)}
.files li .grip{cursor:grab;color:var(--faint);font-size:18px;padding:0 2px;user-select:none}
.files li .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.files li small{color:var(--faint);white-space:nowrap}
.files li small.err{color:#d70015}
.files li button{border:0;background:var(--chip);border-radius:8px;width:32px;height:32px;flex:none}
.tip{font-size:13px;color:var(--faint);margin:8px 2px 0}
.opts{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:16px}
.opts label{font-size:15px;color:var(--muted);display:flex;gap:6px;align-items:center}
.done{max-width:860px;margin:16px auto 0;background:var(--okbg);color:var(--ok);border-radius:18px;padding:18px 20px;display:none}
.done.on{display:block}
.done .row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.done .next{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.done .next span{font-size:13px;font-weight:600}
.done .next a{background:var(--bg);color:var(--text);border-radius:999px;padding:6px 12px;font-size:14px}
.msg{max-width:860px;margin:12px auto 0;text-align:center;color:var(--muted);font-size:15px;min-height:22px}
.actionbar{display:none}
@media (max-width:640px){.actionbar.on{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:var(--nav);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--line);gap:10px;align-items:center}.actionbar .btn{flex:1}.actionbar small{color:var(--muted);font-size:13px}}
.toc{max-width:760px;margin:44px auto 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.toc span{font-size:13px;color:var(--faint);margin-right:4px}
.toc a{font-size:14px;background:var(--tile);color:var(--text);border-radius:999px;padding:6px 12px}
.content{max-width:760px;margin:0 auto}
.content h2{font-size:30px;letter-spacing:-.03em;margin:52px 0 14px;line-height:1.15;scroll-margin-top:70px}
.content p{font-size:17px;line-height:1.65;margin:0 0 14px}
.howto{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:12px;padding:0;list-style:none;counter-reset:s}
.howto li{background:var(--tile);border-radius:18px;padding:18px;counter-increment:s;font-size:16px}
.howto li::before{content:counter(s);display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--text);color:var(--bg);font-weight:600;font-size:14px;margin-bottom:10px}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--faint);font-weight:400;font-size:22px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:10px 0 0;color:var(--muted)}
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,220px),1fr));gap:10px}
.related a{background:var(--tile);border-radius:14px;padding:16px;color:var(--text);font-size:15px}
.related a:hover{text-decoration:none;color:var(--accent)}
.byline{color:var(--faint);font-size:13px;margin-top:28px}
.placeholder{background:var(--bg);border-radius:20px;padding:46px 20px;text-align:center;color:var(--muted);border:2px dashed var(--line)}
.rail-col{display:none}
@media (min-width:1280px){.rail-col{display:block}}
/* ads */
.ad-slot{margin:56px auto;max-width:980px;text-align:center}
.ad-slot .ad-label{display:block;font-size:11px;color:var(--faint);letter-spacing:.04em;margin-bottom:6px}
.ad-slot .ad-box{min-height:120px;border-radius:12px}
.ad-slot.rail{position:sticky;top:72px;margin:40px 0;width:300px}
.ad-slot.rail .ad-box{min-height:600px}
.ad-slot.infeed .ad-box{min-height:150px}
@media (max-width:767px){.ad-slot.wide .ad-box{min-height:280px}}
/* overlay */
.overlay{position:fixed;inset:0;z-index:90;background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;place-items:center;padding:16px}
.overlay.on{display:grid}
.overlay .box{border:3px dashed var(--accent);border-radius:28px;padding:56px 32px;text-align:center;font-size:22px;font-weight:600;background:var(--panel);max-width:560px;width:100%}
.overlay .box div{font-size:56px;margin-bottom:10px}
.sheet{position:fixed;inset:0;z-index:95;background:rgba(0,0,0,.35);display:none;place-items:center;padding:16px}
.sheet.on{display:grid}
.sheet .box{background:var(--panel);border-radius:24px;padding:24px;max-width:520px;width:100%;box-shadow:var(--shadow)}
.sheet h3{margin:0 0 14px;font-size:20px;letter-spacing:-.02em}
.sheet a{display:flex;justify-content:space-between;padding:12px 14px;border-radius:12px;color:var(--text);background:var(--tile);margin-bottom:8px}
.sheet a:hover{text-decoration:none;color:var(--accent)}
.sheet .x{margin-top:6px}
@media (max-width:640px){.hero{padding:52px 0 36px}.toolbox{padding:14px;border-radius:22px}.tile{min-height:300px;padding-top:32px}.sec{padding-top:56px}.search input{font-size:16px;padding:16px 16px 16px 48px}.search kbd{display:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* ===== production additions ===== */
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--accent);color:#fff;padding:8px 14px;border-radius:10px}
.skip:focus{left:8px}
.gnav .mh,.fh{font-size:12px;margin:0 0 8px;font-weight:600;letter-spacing:0}
.mega .mh a{color:var(--faint);font-size:12px;padding:0}
.fh a{color:var(--text)!important;padding:0!important}
.flangs{margin:16px 0 0;font-size:12px;line-height:1.9}
.flangs a{color:var(--muted)}
.crumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px}
.crumb li+li::before{content:"›";margin-right:4px;color:var(--faint)}
.chero .count{font-size:14px;color:var(--faint);margin-top:10px}
.center{text-align:center;margin-top:22px}
.chips.left{justify-content:flex-start}
.tcard .ti{font-size:26px;line-height:1}
.related a small{display:block;color:var(--faint);font-size:13px;margin-top:4px;line-height:1.35}
.glist{padding-left:20px}.glist li{margin:6px 0}
.langtag{color:var(--faint)}
.content ul{padding-left:22px;margin:0 0 14px}.content li{margin:5px 0;line-height:1.6}
.content code,.toolbox code{font:14px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--chip);padding:1px 6px;border-radius:6px}
.content table{width:100%;border-collapse:collapse;margin:8px 0 20px;font-size:15px;display:block;overflow-x:auto}
.content th,.content td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
.content th{font-weight:600;background:var(--bg2)}
.content figure{margin:18px 0 24px}.content figcaption{font-size:13px;color:var(--faint);margin-top:6px}
.content figure svg{max-width:100%;height:auto;display:block}
.content .callout{background:var(--bg2);border-radius:14px;padding:14px 18px;margin:0 0 16px}
.content h3{font-size:21px;margin:28px 0 10px;letter-spacing:-.02em}
.ghead{text-align:left;padding:30px 0 6px}.ghead .k{color:var(--accent);font-weight:600;font-size:14px;margin:0}
.ghead h1{font-size:clamp(30px,5vw,46px);letter-spacing:-.03em;line-height:1.12;margin:8px 0 12px}
.ghead .lede{font-size:20px;color:var(--muted);line-height:1.5}
.guide-art .toc{margin-top:22px}
.legal h1{font-size:clamp(30px,5vw,44px);letter-spacing:-.03em;margin:26px 0 4px}
.legal h2{font-size:24px;margin-top:38px}
.guides .guide h2{margin:6px 0 8px;font-size:19px;letter-spacing:-.02em;line-height:1.3}
.recent .rh{font-size:13px;color:var(--faint);font-weight:600;margin:0 0 8px;letter-spacing:0}
.about-site{max-width:760px}.about-site p{color:var(--muted);font-size:16px;line-height:1.7}
.about-site h2{font-size:28px;text-align:left}
.empty{text-align:center;color:var(--muted);padding:28px 0}
.rootpick{text-align:center;padding:80px 16px}.rootpick ul{list-style:none;padding:0;display:grid;gap:10px;max-width:320px;margin:20px auto}
.rootpick a{display:block;background:var(--tile);border-radius:14px;padding:12px}
/* search dialog */
.sdlg{position:fixed;inset:0;z-index:96;background:rgba(0,0,0,.32);padding:10vh 16px 16px}
.sdlg[hidden]{display:none}
.sdlg .sbox{max-width:660px;margin:0 auto}
.sdlg .search input{box-shadow:var(--shadow)}
.results.on{display:block}
.sheet[hidden]{display:none}.sheet:not([hidden]){display:grid}
.sheet h2{margin:0 0 14px;font-size:20px;letter-spacing:-.02em}
.overlay .box{pointer-events:none}
/* ---------- tool UI kit ---------- */
.toolbox{position:relative}
.toolbox .row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.toolbox .row.between{justify-content:space-between}
.toolbox .row.center{justify-content:center}
.toolbox .grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px}
.toolbox .grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px}
.toolbox .card{background:var(--bg);border-radius:18px;padding:16px}
.toolbox .card h3{margin:0 0 10px;font-size:15px;color:var(--muted);font-weight:600;letter-spacing:0}
.field{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted);min-width:0}
.field>span{font-weight:600}
.inp,.toolbox select,.toolbox textarea,.toolbox input[type=text],.toolbox input[type=number],.toolbox input[type=date],.toolbox input[type=time],.toolbox input[type=datetime-local],.toolbox input[type=url],.toolbox input[type=email],.toolbox input[type=tel],.toolbox input[type=password]{font:inherit;font-size:16px;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text);min-height:44px;width:100%;min-width:0}
.toolbox textarea{min-height:180px;resize:vertical;line-height:1.5}
.toolbox textarea.mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px}
.toolbox input[type=range]{width:100%;accent-color:var(--accent)}
.toolbox input[type=color]{width:52px;height:44px;border:1px solid var(--line);border-radius:12px;padding:3px;background:var(--bg)}
.toolbox input[type=checkbox],.toolbox input[type=radio]{accent-color:var(--accent);width:18px;height:18px}
.check{display:inline-flex;gap:8px;align-items:center;font-size:15px;color:var(--text);cursor:pointer;min-height:36px}
.seg{display:inline-flex;flex-wrap:wrap;background:var(--chip);border-radius:12px;padding:3px;gap:2px}
.seg button{border:0;background:transparent;padding:8px 14px;border-radius:9px;font-size:14px;min-height:36px;color:var(--text)}
.seg button[aria-pressed="true"]{background:var(--bg);box-shadow:0 1px 4px rgba(0,0,0,.12);font-weight:600}
.big-out{font-size:clamp(28px,5vw,44px);font-weight:700;letter-spacing:-.03em;line-height:1.15;word-break:break-all}
.stat{background:var(--bg);border-radius:16px;padding:14px 16px}
.stat b{display:block;font-size:26px;letter-spacing:-.02em;line-height:1.2}
.stat span{font-size:13px;color:var(--muted)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-top:14px}
.thumb{background:var(--bg);border-radius:14px;padding:8px;text-align:center;position:relative;border:2px solid transparent;user-select:none}
.thumb canvas,.thumb img{max-width:100%;height:auto;display:block;margin:0 auto;box-shadow:0 1px 6px rgba(0,0,0,.15);background:#fff;transition:transform .2s}
.thumb small{display:block;font-size:12px;color:var(--faint);margin-top:6px}
.thumb.sel{border-color:var(--accent)}
.thumb.off{opacity:.35}
.thumb.over{border-color:var(--accent);border-style:dashed}
.thumb .tbtns{display:flex;gap:4px;justify-content:center;margin-top:6px}
.thumb .tbtns button{border:0;background:var(--chip);border-radius:8px;min-width:32px;height:32px;font-size:14px}
.thumb[draggable=true]{cursor:grab}
.imglist{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:8px}
.imglist li{background:var(--bg);border-radius:14px;padding:8px 10px;display:flex;gap:10px;align-items:center;font-size:14px}
.imglist img{width:48px;height:48px;object-fit:cover;border-radius:8px;flex:none;background:var(--chip)}
.imglist .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.imglist small{color:var(--faint);white-space:nowrap}
.imglist .good{color:var(--ok);font-weight:600}
.imglist button,.imglist a.dl{border:0;background:var(--chip);border-radius:8px;min-width:32px;height:32px;display:inline-grid;place-items:center;color:var(--text);font-size:14px;padding:0 8px}
.preview{background:var(--bg);border-radius:18px;padding:12px;display:grid;place-items:center;min-height:200px;overflow:hidden}
.preview canvas,.preview img,.preview svg{max-width:100%;height:auto}
.out{background:var(--bg);border-radius:14px;padding:12px 14px;font-size:15px;min-height:44px;word-break:break-word}
.err{color:#d70015}
:root[data-theme="dark"] .err{color:#ff6961}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .err{color:#ff6961}}
.okc{color:var(--ok)}
.mt{margin-top:14px}.mt2{margin-top:22px}
.small{font-size:13px;color:var(--faint)}
.done .dlrow{display:flex;flex-wrap:wrap;gap:8px}
.done .btn{min-height:40px}
.kbdhint{font-size:12px;color:var(--faint)}
table.res{width:100%;border-collapse:collapse;font-size:15px}
table.res td,table.res th{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left}
table.res th{font-weight:600;color:var(--muted);font-size:13px}
.diffout{background:var(--bg);border-radius:14px;overflow:auto;font:13.5px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;max-height:70vh}
.diffout table{border-collapse:collapse;width:100%}
.diffout td{padding:0 8px;white-space:pre-wrap;word-break:break-word;vertical-align:top}
.diffout td.ln{color:var(--faint);text-align:right;user-select:none;width:1%;white-space:nowrap}
.diffout tr.add td.tx{background:color-mix(in srgb,#34c759 18%,transparent)}
.diffout tr.del td.tx{background:color-mix(in srgb,#ff3b30 16%,transparent)}
.diffout ins{background:color-mix(in srgb,#34c759 40%,transparent);text-decoration:none;border-radius:3px}
.diffout del{background:color-mix(in srgb,#ff3b30 36%,transparent);text-decoration:none;border-radius:3px}
.symgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:6px}
.symgrid button{border:0;background:var(--bg);border-radius:10px;height:48px;font-size:22px;line-height:1}
.symgrid button:hover{background:var(--chip)}
.fancy{display:grid;gap:8px}
.fancy button{display:flex;justify-content:space-between;gap:12px;text-align:left;border:0;background:var(--bg);border-radius:12px;padding:12px 14px;font-size:18px;color:var(--text);align-items:center}
.fancy button small{font-size:12px;color:var(--faint);white-space:nowrap}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:999px;font-size:14px;z-index:99;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.on{opacity:1}
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:8px}
.swatch{border:0;border-radius:12px;height:72px;display:flex;align-items:flex-end;padding:6px;font:12px ui-monospace,Menlo,monospace}
.typing{font-size:22px;line-height:1.7;background:var(--bg);border-radius:16px;padding:18px;min-height:120px;word-break:break-word;user-select:none}
.typing .ok{color:var(--ok)}.typing .bad{color:#d70015;background:color-mix(in srgb,#ff3b30 15%,transparent);border-radius:3px}
.typing .cur{border-bottom:2px solid var(--accent)}
.timer-big{font-size:clamp(56px,14vw,120px);font-weight:700;letter-spacing:-.04em;text-align:center;font-variant-numeric:tabular-nums;line-height:1.05}
.laps{list-style:none;padding:0;margin:12px 0 0;font-variant-numeric:tabular-nums}
.laps li{display:flex;justify-content:space-between;padding:8px 4px;border-bottom:1px solid var(--line)}
.wheelwrap{position:relative;max-width:440px;margin:0 auto}
.wheelwrap canvas{width:100%;height:auto;display:block}
.wheelwrap .ptr{position:absolute;top:-6px;left:50%;transform:translateX(-50%);width:0;height:0;border-left:16px solid transparent;border-right:16px solid transparent;border-top:30px solid var(--text);filter:drop-shadow(0 2px 3px rgba(0,0,0,.3))}
.tz-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;background:var(--bg);border-radius:14px;padding:10px 12px}
.tz-row b{font-size:22px;font-variant-numeric:tabular-nums}
.tz-row small{display:block;color:var(--faint)}
.qrbox{display:grid;place-items:center;background:#fff;border-radius:18px;padding:16px;min-height:240px}
.json-err{background:color-mix(in srgb,#ff3b30 10%,transparent);border-radius:12px;padding:10px 14px;margin-top:10px;font-size:14px}
@media (max-width:640px){.toolbox textarea{min-height:140px}.thumbs{grid-template-columns:repeat(auto-fill,minmax(96px,1fr))}}
@media print{.gnav,footer,.ad-slot,.actionbar,.toc{display:none}}