/* circlecropimage.app — cool gray page, near-black type, teal accent */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/inter-latin-wght.woff2) format("woff2")}
@font-face{font-family:"Inter Fallback";src:local("Arial");size-adjust:107.4%;ascent-override:90.2%;descent-override:22.5%;line-gap-override:0%}
:root{
--font:"Inter","Inter Fallback",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
--bg:#f2f4f7;--surface:#fff;--text:#10141c;--muted:#5c6778;--faint:#8b95a6;--nav:#3d4b5e;
--line:#e4e8ef;--line2:#d0d7e2;--tint:#f7f8fb;--sink:#e8edf3;
--primary:#10141c;--link:#10141c;--crumb:#0c8f78;--accent:#0d9488;--accent-soft:#e7f6f3;--accent-hi:#14b8a6;--accent-press:#0f766e;--accent-ink:#0f766e;--accent-ic:#0d9488;--on-accent:#ffffff;--ring:rgba(13,148,136,.32);
--peach:#e7f6f3;--peach2:#d2efe8;--peach-ln:#b7e3d8;
--ok:#0d9488;--danger:#b42318;--danger-bg:#fef3f2;--danger-ln:#fecdca;
--ink:#10141c;--ink2:#1a2230;--on-ink:#f4f6f8;--on-ink-m:#8b95a6;--on-ink-ln:rgba(255,255,255,.1);
--panel-bg:#fff;--panel-ink:#10141c;--panel-m:#5c6778;--panel-ln:#e4e8ef;--panel-card:#f6f8fb;--panel-accent:#0d9488;
--advice-bg:#eef8f6;--advice-ln:#c5e7df;--advice-ink:#10141c;
--chip-on-bg:#0d9488;--chip-on-fg:#ffffff;--grid-ln:rgba(16,20,28,.05);
--dg1:#e6eaef;--dg2:#f5f7fa;--dg3:#d5dbe3;
--pad:16px;--r:16px;--r2:12px;--r3:10px;--head-h:64px;
--shadow:0 1px 2px rgba(16,20,28,.04),0 8px 24px rgba(16,20,28,.05);
--shadow-lg:0 1px 2px rgba(16,20,28,.04),0 16px 40px rgba(16,20,28,.1);
color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
--bg:#0e141b;--surface:#161d27;--text:#e8eef6;--muted:#9aabbd;--faint:#7d8b9e;--nav:#d5deea;
--line:#2a3442;--line2:#3a4656;--tint:#121922;--sink:#0b1016;
--primary:#e8eef6;--link:#5eead4;--crumb:#2dd4bf;--accent:#2dd4bf;--accent-hi:#5eead4;--accent-press:#14b8a6;--accent-ink:#5eead4;--accent-ic:#2dd4bf;--on-accent:#042f2e;--ring:rgba(45,212,191,.35);
--peach:rgba(45,212,191,.12);--peach2:rgba(45,212,191,.2);--peach-ln:rgba(45,212,191,.32);
--ok:#2dd4bf;--danger:#ff8f86;--danger-bg:#331a19;--danger-ln:#6a2d29;
--ink:#0b1016;--ink2:#121922;
--panel-bg:#161d27;--panel-ink:#e8eef6;--panel-m:#9aabbd;--panel-ln:#2a3442;--panel-card:#121922;--panel-accent:#2dd4bf;
--advice-bg:rgba(45,212,191,.12);--advice-ln:rgba(45,212,191,.28);--advice-ink:#ccfbf1;
--chip-on-bg:#0f766e;--chip-on-fg:#ffffff;--grid-ln:rgba(255,255,255,.04);
--dg1:#2a3442;--dg2:#161d27;--dg3:#3a4656;
--shadow:none;--shadow-lg:0 18px 44px rgba(0,0,0,.45);color-scheme:dark}}
[data-theme=dark]{
--bg:#0e141b;--surface:#161d27;--text:#e8eef6;--muted:#9aabbd;--faint:#7d8b9e;--nav:#d5deea;
--line:#2a3442;--line2:#3a4656;--tint:#121922;--sink:#0b1016;
--primary:#e8eef6;--link:#5eead4;--crumb:#2dd4bf;--accent:#2dd4bf;--accent-hi:#5eead4;--accent-press:#14b8a6;--accent-ink:#5eead4;--accent-ic:#2dd4bf;--on-accent:#042f2e;--ring:rgba(45,212,191,.35);
--peach:rgba(45,212,191,.12);--peach2:rgba(45,212,191,.2);--peach-ln:rgba(45,212,191,.32);
--ok:#2dd4bf;--danger:#ff8f86;--danger-bg:#331a19;--danger-ln:#6a2d29;
--ink:#0b1016;--ink2:#121922;
--panel-bg:#161d27;--panel-ink:#e8eef6;--panel-m:#9aabbd;--panel-ln:#2a3442;--panel-card:#121922;--panel-accent:#2dd4bf;
--advice-bg:rgba(45,212,191,.12);--advice-ln:rgba(45,212,191,.28);--advice-ink:#ccfbf1;
--chip-on-bg:#0f766e;--chip-on-fg:#ffffff;--grid-ln:rgba(255,255,255,.04);
--dg1:#2a3442;--dg2:#161d27;--dg3:#3a4656;
--shadow:none;--shadow-lg:0 18px 44px rgba(0,0,0,.45);color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scrollbar-gutter:stable;-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
html.lock{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.65 var(--font);font-optical-sizing:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;text-rendering:optimizeLegibility}
img,svg{max-width:100%}
img{height:auto}
a{color:var(--link);text-underline-offset:3px;text-decoration-line:underline;text-decoration-color:color-mix(in srgb,var(--accent) 70%,transparent);text-decoration-thickness:1px;overflow-wrap:anywhere}
::selection{background:#c9efe6;color:#10141c}
a:hover{text-decoration-color:var(--accent-ic)}
h1,h2,h3,h4{font-family:var(--font);line-height:1.18;margin:0 0 .6em;color:var(--text);letter-spacing:-.022em;text-wrap:balance}
h1{font-size:clamp(1.85rem,5vw,2.8rem);font-weight:800;letter-spacing:-.03em;line-height:1.1}
h2{font-size:clamp(1.35rem,3.2vw,1.8rem);font-weight:700}
h3{font-size:1.1rem;font-weight:650;letter-spacing:-.012em}
p{margin:0 0 1em}
ul,ol{padding-left:1.25em;margin:0 0 1em}
li{margin:.3em 0}
b,strong{font-weight:650}
kbd{font:600 .72rem/1 var(--font);padding:3px 6px;border:1px solid var(--line2);border-bottom-width:2px;border-radius:6px;background:var(--surface);color:var(--muted)}
code{font:.9em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--tint);padding:1px 5px;border-radius:5px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:10px 14px;border-radius:10px;z-index:100;font-weight:600}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent-ic);outline-offset:2px;border-radius:8px}
.wrap{width:min(1120px,100%);max-width:1120px;margin:0 auto;padding:0 var(--pad)}
.ico{width:20px;height:20px;flex:none}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:50;background:#fff;-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom:1px solid var(--line)}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .site-head{background:rgba(14,20,27,.96);-webkit-backdrop-filter:saturate(140%) blur(20px);backdrop-filter:saturate(140%) blur(20px);border-bottom-color:rgba(255,255,255,.08)}}
[data-theme=dark] .site-head{background:rgba(14,20,27,.96);-webkit-backdrop-filter:saturate(140%) blur(20px);backdrop-filter:saturate(140%) blur(20px);border-bottom-color:rgba(255,255,255,.08)}
.head-in{display:flex;align-items:center;gap:8px;height:var(--head-h)}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:680;font-size:1.0625rem;line-height:1;letter-spacing:-.03em;white-space:nowrap;min-width:0}
.site-head .logo{gap:12px;font-weight:800;font-size:1.375rem;letter-spacing:-.034em}
.logo span{line-height:1}
.site-head .logo span{line-height:1.5}
.site-head .logo-word,.site-head .logo-tld{padding-bottom:.12em}
.site-head .logo-crop{color:var(--accent)}
.site-head .logo-text{display:flex;align-items:center;min-width:0}
.logo img{width:32px;height:32px;border-radius:50%;flex:none;background:transparent}
.site-head .logo img{width:36px;height:36px}
.nav{display:none}
.head-act{display:flex;gap:8px;margin-left:auto;align-items:center}
.ib{position:relative;display:inline-grid;place-items:center;width:36px;height:36px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text);cursor:pointer;padding:0;font:600 .85rem/1 var(--font);transition:background .15s,border-color .15s,transform .1s}
.ib:active{transform:scale(.95)}
.ib .ico{width:20px;height:20px}
.ic-sun,.ic-x{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .ic-moon{display:none}:root:not([data-theme=light]) .ic-sun{display:block}}
[data-theme=dark] .ic-moon{display:none}[data-theme=dark] .ic-sun{display:block}
[data-theme=light] .ic-moon{display:block}[data-theme=light] .ic-sun{display:none}
.nav-open .nav-tgl .ic-menu{display:none}.nav-open .nav-tgl .ic-x{display:block}
.theme{display:inline-grid}
.find{display:inline-grid;place-items:center;width:36px;height:36px;border:1px solid var(--accent);border-radius:999px;background:var(--surface);color:var(--accent);cursor:pointer;padding:0}
.find .ico{color:var(--accent)}
.find .find-t,.find kbd{display:none}
@media (hover:hover){.ib:hover,.find:hover{background:var(--tint)}}

@media (max-width:959px){
.site-head .logo{flex:1 1 auto;min-width:0}
.site-head .logo-text{flex:1 1 auto}
.site-head .logo-word{overflow:hidden;text-overflow:ellipsis}
.site-head .logo-tld{flex:none}
.head-act{flex:none;gap:0}
.head-in{gap:8px}
.site-head .find{border-color:transparent;background:transparent;border-radius:8px;color:var(--text)}
.site-head .find .ico{color:var(--text)}
.site-head .theme{display:none}
}
@media (max-width:639px){
.site-head .wrap{padding-inline:var(--pad)}
.site-head .logo{font-size:clamp(1.125rem,5.2vw,1.25rem);gap:8px}
.site-head .logo img{width:36px;height:36px}
.head-in{gap:6px}
.head-act{gap:0}
}
@media (max-width:359px){.head-in{gap:4px}.head-act{gap:0}.site-head .logo{gap:4px}}
/* desktop nav */
@media (min-width:960px){
.head-in{position:relative}
.site-head .logo{font-size:1.5rem}
.nav{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:6px;margin:0;height:auto;min-width:0}
.nav-l .ico{width:16px;height:16px;color:var(--faint)}
.nav-dd{display:flex;align-items:center}
.nav-l{display:inline-flex;align-items:center;flex:none;white-space:nowrap;height:36px;padding:0 12px;border-radius:999px;color:var(--nav);text-decoration:none;font-weight:550;font-size:.9rem;align-self:center}
.nav>.nav-l{align-self:center}
.nav-l[aria-current=page]{background:var(--accent);color:var(--on-accent);font-weight:650;box-shadow:none}
.nav-l[aria-current=page] .ico{color:var(--on-accent)}
@media (hover:hover){.nav-l:hover:not([aria-current=page]){background:var(--peach);color:var(--accent)}.nav-l:hover:not([aria-current=page]) .ico{color:var(--accent)}}
.nav-chev{display:inline-grid;place-items:center;width:30px;height:36px;border:0;background:transparent;color:var(--muted);cursor:pointer;padding:0;align-self:center}
/* the link and its chevron are one pill: the highlight is drawn on the wrapper so the arrow sits inside the border */
.nav-dd{align-self:center;height:36px;border-radius:999px;transition:background .15s}
.nav-dd>.nav-l{padding-right:2px;background:transparent!important;box-shadow:none!important}
.nav-dd:has(>.nav-l[aria-current=page]){background:var(--accent);box-shadow:none;border-radius:999px}
.nav-dd:has(>.nav-l[aria-current=page])>.nav-l,.nav-dd:has(>.nav-l[aria-current=page]) .nav-chev,.nav-dd:has(>.nav-l[aria-current=page]) .ico{color:var(--on-accent)}
@media (hover:hover){.nav-dd:hover:not(:has(>.nav-l[aria-current=page])),.nav-dd.open:not(:has(>.nav-l[aria-current=page])){background:var(--peach)}.nav-dd:hover:not(:has(>.nav-l[aria-current=page]))>.nav-l,.nav-dd:hover:not(:has(>.nav-l[aria-current=page])) .nav-chev{color:var(--accent-ink)}}
.nav-dd{position:relative}
.nav-dd::after{content:"";position:absolute;top:100%;left:0;width:100%;height:14px;pointer-events:none}
.nav-dd:hover::after,.nav-dd.open::after{pointer-events:auto}
.nav-chev .ico{width:16px;height:16px;transition:transform .2s}
.nav-dd:hover .nav-chev .ico,.nav-dd.open .nav-chev .ico{transform:rotate(180deg)}
.nav-pop{position:absolute;top:calc(100% + 10px);left:0;z-index:6;min-width:228px;padding:8px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .16s,transform .16s,visibility 0s .16s;pointer-events:none}
.nav-dd:hover .nav-pop,.nav-dd:focus-within .nav-pop,.nav-dd.open .nav-pop{opacity:1;visibility:visible;transform:none;transition-delay:0s;pointer-events:auto}
.nav-pop a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;color:var(--text);text-decoration:none;font-weight:550;font-size:.92rem;white-space:nowrap}
.nav-pop a .ico{width:18px;height:18px;color:var(--faint)}
.nav-pop a[aria-current=page]{background:var(--peach);color:var(--accent-ink)}
.nav-pop a[aria-current=page] .ico{color:var(--accent-ic)}
.nav-dd:has(>.nav-l[aria-current=page]) .nav-pop,
.nav-dd:has(>.nav-l[aria-current=page]) .nav-pop a{color:var(--text)}
.nav-dd:has(>.nav-l[aria-current=page]) .nav-pop .ico{color:var(--faint)}
.nav-dd:has(>.nav-l[aria-current=page]) .nav-pop a[aria-current=page]{color:var(--accent-ink)}
.nav-dd:has(>.nav-l[aria-current=page]) .nav-pop a[aria-current=page] .ico{color:var(--accent-ic)}
.nav-pop-all{margin-top:4px;border-top:1px solid var(--line);border-radius:0 0 10px 10px!important;padding-top:10px!important}
@media (hover:hover){.nav-pop a:hover{background:var(--peach);color:var(--accent-ink)}.nav-pop a:hover .ico{color:var(--accent-ic)}}
.find{width:160px;min-width:160px;max-width:160px;height:36px;justify-content:flex-start;display:inline-flex;align-items:center;gap:8px;padding:0 8px 0 12px;color:var(--muted);background:var(--surface);border:1px solid var(--accent);border-radius:999px}
.find .ico{width:16px;height:16px;color:var(--accent)}
.find .find-t{display:inline;font-size:.875rem;font-weight:500;flex:1;text-align:left;color:var(--muted)}
.find kbd{display:inline-block;padding:2px 5px;font-size:.68rem;background:var(--surface);border-color:var(--line);color:var(--faint)}
.theme{display:inline-grid}
.nav-tgl{display:none}
.mnav{display:none!important}
}

/* mobile menu sheet */
.mnav{position:fixed;left:0;right:0;top:var(--head-h);bottom:0;z-index:49;background:var(--bg);overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.mnav-in{padding:12px var(--pad) calc(40px + env(safe-area-inset-bottom));max-width:640px;margin:0 auto}
.mn-top{display:grid;gap:6px;margin-bottom:18px}
.mn-top a{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 16px;border-radius:14px;background:var(--surface);border:1px solid var(--line);color:var(--text);text-decoration:none;font-weight:650;font-size:1.02rem}
.mn-top a .ico{color:var(--faint);width:18px;height:18px}
.mn-top a[aria-current=page]{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}
.mn-top a[aria-current=page] .ico{color:var(--accent)}
.mn-group{margin-bottom:18px}
.mn-group .mn-h{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin:0 0 8px 4px;font-weight:650}
.mn-group ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,172px),1fr));gap:8px}
.mn-group li{margin:0}
.mn-group a{display:flex;align-items:center;gap:10px;min-height:50px;padding:8px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--text);text-decoration:none;font-weight:600;font-size:.92rem;line-height:1.2;white-space:nowrap}
.mn-group a .ico{color:var(--accent-ic)}
.mn-group a[aria-current=page]{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}
.mn-group a[aria-current=page] .ico{color:var(--accent)}
.mn-foot{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px}
.mn-foot .btn{flex:1 1 auto}

/* ---------- page frame ---------- */
.page{padding-top:16px;padding-bottom:56px}
main>.wrap:first-child{padding-top:12px;padding-bottom:56px}
main>.wrap.page-intro{padding-bottom:32px}
.crumbs ol{display:flex;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:2px;list-style:none;padding:0;margin:0 0 10px;font-size:.84rem;color:var(--faint);white-space:nowrap}
.crumbs ol::-webkit-scrollbar{display:none}
.crumbs li{margin:0}
.crumbs li:not(:last-child)::after{content:"›";margin:0 7px;opacity:.8;color:var(--faint)}
.crumbs a{color:var(--crumb);text-decoration:none;font-weight:400}
.crumbs a:hover{color:var(--crumb);text-decoration:underline;text-decoration-color:var(--accent)}
.crumbs [aria-current]{color:var(--text);font-weight:400}
.page-head{padding:2px 0 18px}
.page-head h1{margin-bottom:.4em}
.lede{font-size:1.1rem;line-height:1.6;color:var(--muted);max-width:64ch}
.badges{display:flex;flex-wrap:wrap;gap:4px 16px;list-style:none;padding:0;margin:14px 0 0;font-size:.82rem;font-weight:550;color:var(--muted)}
.badges li{margin:0;display:flex;align-items:center;gap:6px}
.badges li::before{content:"";width:14px;height:14px;border-radius:50%;background:var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/10px no-repeat}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:10px 16px;flex-wrap:wrap;margin:0 0 14px}
.page-head .meta-row{margin:14px 0 0}
.content>.meta{margin:-6px 0 16px}
@media (max-width:759px){.page-head{padding-bottom:12px}.page-head .lede{font-size:1rem;line-height:1.55}.badges{display:none}.page-head h1{font-size:1.75rem}}
.meta{font-size:.86rem;color:var(--muted);margin:0}
.meta a{color:var(--muted)}
.layout{display:block}
@media (min-width:1080px){.layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:28px;align-items:start}.tool-layout{grid-template-areas:"intro slot" "main main";grid-template-columns:minmax(0,1fr) 336px;column-gap:16px;row-gap:8px}.tool-layout>.tool-intro{grid-area:intro;align-self:center}.tool-layout>.tool-intro .page-head{padding-bottom:0}.tool-layout>.tool-intro .crumbs ol{margin-top:0}.tool-layout>.top-slot{grid-area:slot;width:336px;justify-self:end;align-self:start}.tool-layout>.top-slot .ccu{margin:0}.tool-layout>.tool-main{grid-area:main;min-width:0}.has-side>.content{padding-top:22px}.has-side>.sidebar{margin-top:-14px}}
.content{min-width:0}
.sidebar{display:none}
@media (min-width:1080px){.sidebar{display:block;position:relative}}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:16px 14px;margin-bottom:16px}
.side-box h2{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:650;margin:0 0 8px 6px}
.side-box ul{list-style:none;padding:0;margin:0}
.side-box li{margin:0}
.side-box a{display:flex;gap:10px;align-items:center;padding:8px 8px;border-radius:10px;text-decoration:none;color:var(--text);font-weight:550;font-size:.93rem;line-height:1.3}
.side-box a .ico{color:var(--faint);width:19px;height:19px}
@media (hover:hover){.side-box a:hover{background:var(--tint)}.side-box a:hover .ico{color:var(--accent-ic)}}
.side-sticky{position:static}
.sidebar>.side-sticky{margin:0 0 16px}
.sidebar>.side-sticky .ccu{margin:0}
.top-slot .ccu{margin:12px 0}
.tool-intro .lede{margin-bottom:0;max-width:none}
.sec{margin:0 0 42px}
.sec>h2{padding-top:4px}
.sec p,.sec li{max-width:68ch;line-height:1.72}
.sec ul li::marker{color:var(--accent-ic)}
.sec ol li::marker{color:var(--muted);font-weight:650}
.band{padding:56px 0}
.band.alt{background:var(--surface);border-block:1px solid var(--line)}
.band.tint{background:var(--tint)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.sec-head h2{margin:0}
.sec-more{font-size:.93rem;font-weight:650;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.sec-more .ico{width:16px;height:16px;transition:transform .15s}
.sec-more:hover .ico{transform:translateX(3px)}

/* ---------- buttons, chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;min-height:46px;border:1px solid var(--line2);border-radius:var(--r3);background:var(--surface);color:var(--text);font:650 .95rem/1.2 var(--font);cursor:pointer;text-decoration:none;white-space:nowrap;transition:transform .12s,background .15s,border-color .15s,box-shadow .15s;-webkit-tap-highlight-color:transparent}
.btn .ico{width:18px;height:18px}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--on-accent);box-shadow:none}
.btn.lg{min-height:50px;padding:0 24px;font-size:1rem;border-radius:12px}
.btn.sm{min-height:36px;padding:0 12px;font-size:.84rem;border-radius:9px}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn.sm.ghost{border-color:var(--line)}
.btn:active{transform:translateY(1px) scale(.99)}
.btn:disabled{opacity:.6;cursor:progress}
@media (hover:hover){.btn:hover{background:var(--tint);border-color:var(--line2)}.btn.pri:hover{background:var(--accent-press);border-color:var(--accent-press)}.btn.ghost:hover{color:var(--text)}}
.chip{display:inline-flex;align-items:center;justify-content:center;flex:none;min-width:48px;height:40px;padding:0 16px;border:1px solid var(--line2);border-radius:999px;background:var(--surface);color:var(--text);font:600 .9rem/1 var(--font);cursor:pointer;transition:background .15s,border-color .15s,color .15s;-webkit-tap-highlight-color:transparent}
.chip.on{background:var(--chip-on-bg);border-color:var(--chip-on-bg);color:var(--chip-on-fg)}
@media (hover:hover){.chip:not(.on):hover{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}}
.chip-link{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 13px 0 11px;border:1px solid var(--line2);border-radius:999px;background:var(--surface);color:var(--text);font:600 .86rem/1 var(--font);text-decoration:none;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}
.chip-link .ico{width:16px;height:16px;color:var(--accent-ic)}
@media (hover:hover){.chip-link:hover{border-color:var(--accent);background:var(--peach);color:var(--accent-ink)}}
.try,.jump{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px}
.try-l{font-size:.78rem;font-weight:650;color:var(--faint);text-transform:uppercase;letter-spacing:.08em;margin-right:4px}
.jump{margin:16px 0 0}
.hub-find{display:flex;align-items:center;gap:12px;width:100%;max-width:520px;height:54px;margin-top:18px;padding:0 20px;border:1px solid var(--line2);border-radius:999px;background:var(--surface);color:var(--muted);font:500 1rem/1 var(--font);cursor:pointer;text-align:left;box-shadow:var(--shadow)}
.hub-find span{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:560px){.hub-find{padding:0 16px;gap:10px;font-size:.95rem}}
@media (hover:none){.hub-find kbd{display:none}}
.hub-find .ico{color:var(--accent-ic)}
@media (hover:hover){.hub-find:hover{border-color:var(--accent)}}

/* ---------- forms ---------- */
/* 16px floor: iOS zooms the page when a focused field is smaller */
input:not([type=range]):not([type=color]):not([type=checkbox]):not([type=radio]):not([type=file]):not([type=button]):not([type=submit]):not([type=reset]):not([type=image]):not([type=hidden]),
textarea,
select{font-size:16px;color:var(--text)}
.field{min-width:0}
.field[hidden]{display:none}
label{display:block;font-weight:600;font-size:.85rem;margin-bottom:7px;color:var(--text)}
.opt{font-weight:450;color:var(--faint);font-size:.76rem;margin-left:4px}
.hint{font-size:.8rem;color:var(--muted);margin:7px 0 0;line-height:1.5}
.err{font-size:.82rem;color:var(--danger);margin:6px 0 0;font-weight:550}
.inp{position:relative;display:flex;align-items:stretch;border:1px solid var(--line2);border-radius:14px;background:var(--surface);transition:border-color .15s,box-shadow .15s}
.inp:focus-within{border-color:var(--accent)}
.inp input{flex:1;min-width:0;border:0;outline:0;background:transparent;min-height:48px;padding:0 12px;font-size:1.0625rem;font-weight:600;letter-spacing:-.01em;font-variant-numeric:tabular-nums;border-radius:14px 0 0 14px;color:var(--text)}
.inp input::placeholder{color:var(--faint);font-weight:500}
.inp select{order:3;flex:0 0 auto;width:auto;min-width:68px;max-width:98px;border:0;border-left:1px solid var(--line);outline:0;border-radius:0 12px 12px 0;background:var(--tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b95a1' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") right 8px center/14px no-repeat;-webkit-appearance:none;appearance:none;padding:0 28px 0 12px;font-size:16px;font-weight:600;color:var(--muted);cursor:pointer}
.inp .clr{order:2;display:none;align-self:center;flex:none;width:26px;height:26px;margin-right:6px;border:0;border-radius:50%;background:var(--tint);color:var(--muted);font-size:17px;line-height:1;cursor:pointer;padding:0;place-items:center}
.inp.has .clr{display:grid}
.inp-s{display:inline-flex;align-items:center;width:104px;flex:none}
.inp-s input{min-height:40px;padding:0 4px 0 12px;font-size:16px}
.sfx{padding-right:12px;color:var(--muted);pointer-events:none;font-weight:600}
select:not(.inp select){width:100%;min-height:50px;padding:0 12px;border:1px solid var(--line2);border-radius:14px;background:var(--surface);font-size:1rem;font-weight:600}
input[type=text]:not(.inp input){width:100%;min-height:50px;padding:0 12px;border:1px solid var(--line2);border-radius:14px;background:var(--surface);font-size:1rem}
input:not(.inp input):not(.find-top input):focus,select:not(.inp select):focus{outline:0;border-color:var(--accent)}
.field.bad .inp,.field[aria-invalid=true] .inp{border-color:var(--danger)}
.field.bad .inp:focus-within{border-color:var(--danger)}

/* ---------- unit switcher strip ---------- */
.switcher{position:relative;margin:0 calc(var(--pad)*-1) 14px}
.sw-track{display:flex;align-items:center;gap:8px;overflow-x:auto;scroll-snap-type:x proximity;padding:4px var(--pad) 8px;scrollbar-width:none;-webkit-overflow-scrolling:touch;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 34px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 34px),transparent 100%)}
.sw-track::-webkit-scrollbar{display:none}
.sw-label{flex:none;font-size:.66rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:var(--faint);padding:0 2px 0 10px;border-left:1px solid var(--line2);margin-left:4px;line-height:1}
.sw-label:first-child{border-left:0;margin-left:0;padding-left:0}
.sw-chip{flex:none;display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 15px 0 12px;border:1px solid var(--line2);border-radius:999px;background:var(--surface);color:var(--text);font:600 .9rem/1 var(--font);text-decoration:none;white-space:nowrap;scroll-snap-align:center;cursor:pointer;transition:background .15s,border-color .15s,transform .1s;-webkit-tap-highlight-color:transparent}
.sw-chip .ico{width:17px;height:17px;color:var(--accent-ic)}
.sw-chip:active{transform:scale(.97)}
.sw-chip[aria-current=page]{background:var(--chip-on-bg);border-color:var(--chip-on-bg);color:var(--chip-on-fg)}
.sw-chip[aria-current=page] .ico{color:currentColor}
[data-theme=dark] .sw-chip[aria-current=page] .ico{color:#0b1220}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .sw-chip[aria-current=page] .ico{color:#0b1220}}
.sw-more{border-style:dashed;color:var(--muted)}
@media (hover:hover){.sw-chip:not([aria-current]):hover{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}}
.sw-arrow{position:absolute;top:2px;width:40px;height:40px;display:none;place-items:center;border:1px solid var(--line2);border-radius:50%;background:var(--surface);color:var(--text);cursor:pointer;box-shadow:var(--shadow);z-index:2;padding:0}
.sw-arrow.l{left:6px}.sw-arrow.r{right:6px}
.sw-arrow .ico{width:18px;height:18px}
@media (hover:hover) and (min-width:960px){
.switcher{margin-inline:0;display:flex;align-items:center;gap:10px}
.sw-track{flex:1 1 auto;min-width:0;padding-inline:2px;-webkit-mask-image:none;mask-image:none}
.sw-arrow{position:static;flex:none;top:auto;width:36px;height:36px;box-shadow:none;margin-bottom:4px}
.sw-arrow.l{order:-1}.sw-arrow.r{order:1}
.switcher.has-scroll .sw-arrow{display:grid}
.sw-arrow:not(.on){opacity:.35;cursor:default;pointer-events:none}
.sw-arrow.on:hover{border-color:var(--accent);color:var(--accent-ink);background:var(--peach)}
}

/* ---------- calculator ---------- */
.calc{margin:0 0 40px}
.calc-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
.calc-in{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 18px 22px;box-shadow:var(--shadow)}
.calc-out{min-width:0}
@media (min-width:980px){
.calc-grid{grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:22px;align-items:start}
.calc-in{padding:26px}
.calc-out{position:sticky;top:84px}
}
.calc-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.calc-bar h2{margin:0;font-size:1.05rem;letter-spacing:-.012em}
.seg{display:inline-flex;padding:3px;background:var(--tint);border:1px solid var(--line);border-radius:999px;gap:2px}
.seg button{border:0;background:transparent;min-height:34px;padding:0 16px;border-radius:999px;font:650 .84rem/1 var(--font);color:var(--muted);cursor:pointer;transition:background .15s,color .15s}
.seg button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);box-shadow:0 2px 6px -2px var(--accent)}
.presets{margin:0 0 18px}
.presets-l{display:block;font-size:.72rem;font-weight:650;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);margin-bottom:8px}
.presets-row{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;margin:0 -18px 0 0;padding:2px 18px 4px 0;scroll-snap-type:x proximity}
.presets-row::-webkit-scrollbar{display:none}
.presets .chip{scroll-snap-align:start}
@media (min-width:980px){.presets-row{flex-wrap:wrap;margin:0;padding:0;overflow:visible}}
.fgrid2{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:520px){.fgrid2{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.waste{margin-top:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.opts{margin-top:18px;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:0 14px}
.opts summary{cursor:pointer;font-weight:600;font-size:.9rem;padding:13px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;color:var(--muted)}
.opts summary::-webkit-details-marker{display:none}
.opts summary::after{content:"";width:16px;height:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b95a1' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") center/16px no-repeat;transition:transform .2s}
.opts[open] summary::after{transform:rotate(180deg)}
.opts[open]{padding-bottom:14px}
.opts-g{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:2px}
.acts{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.acts .btn.pri{flex:1 1 180px}
.errs{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger-ln);border-radius:var(--r2);padding:12px 16px;margin:16px 0 0;font-size:.92rem}
.errs p{margin:0 0 4px}.errs ul{margin:0}
/* result panel */
.result{position:relative;overflow:hidden;background:var(--panel-bg);color:var(--panel-ink);border:1px solid var(--panel-ln);border-radius:var(--r);padding:24px 20px 20px;box-shadow:var(--shadow-lg)}
.res-main{display:flex;flex-direction:column;gap:2px;margin-bottom:14px}
.res-label{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--panel-accent)}
.res-num{display:block;font-size:clamp(2.3rem,9vw,3.3rem);line-height:1.04;letter-spacing:-.035em;font-weight:780;color:var(--panel-ink);font-variant-numeric:tabular-nums;margin:4px 0}
.res-sub{color:var(--panel-m);font-size:.93rem;line-height:1.45}
.res-advice{background:var(--advice-bg);border:1px solid var(--advice-ln);color:var(--advice-ink);border-radius:12px;padding:11px 14px;margin:0 0 14px;font-size:.92rem;line-height:1.5}
.details{margin-top:18px}
.res-cnote,.res-note{font-size:.8rem;color:var(--muted);margin:10px 0 0;line-height:1.5}
.res-note{margin-top:14px}
.res-eg{font-size:.8rem;color:var(--panel-m);margin:14px 0 0;padding-top:12px;border-top:1px dashed var(--panel-ln)}
.result[data-example="0"] .res-eg{display:none}
.result .res-main{margin-bottom:12px}
.result .res-advice{margin-bottom:0}
.result.flash .res-num{animation:pop .4s cubic-bezier(.2,.8,.2,1)}
@keyframes pop{0%{opacity:.4;transform:translateY(5px)}100%{opacity:1;transform:none}}
.res-acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.calc-out .res-acts{display:grid;grid-template-columns:repeat(3,minmax(max-content,1fr))}
.calc-out .res-acts .btn{padding:0 8px;gap:6px;min-height:44px;font-size:.88rem}
.calc-out .res-acts .btn.pri{grid-column:1/-1;min-height:50px;font-size:.98rem}
/* next steps */
.kit{margin:0 0 44px}
.kit-head{display:flex;align-items:baseline;justify-content:space-between;gap:4px 16px;flex-wrap:wrap;margin-bottom:14px}
.kit-h{margin:0;font-size:1.12rem}
.kit-head p{margin:0;color:var(--muted);font-size:.88rem}
.kit ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,262px),1fr));gap:10px}
.kit li{margin:0}
.kit a{display:flex;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);text-decoration:none;color:var(--text);height:100%;transition:border-color .15s,transform .15s,box-shadow .15s}
.kit a>.ico:first-child{width:42px;height:42px;padding:10px;border-radius:12px;background:var(--peach);color:var(--accent-ic);transition:background .15s,color .15s}
.kit-t{display:flex;flex-direction:column;min-width:0;line-height:1.3}
.kit-t b{font-weight:650;white-space:nowrap}
.kit small{color:var(--muted);font-size:.82rem}
.kit-go{margin-left:auto;color:var(--faint);width:18px!important;height:18px!important;transition:transform .15s,color .15s}
@media (hover:hover){.kit a:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-1px)}.kit a:hover>.ico:first-child{background:var(--accent);color:var(--on-accent)}.kit a:hover .kit-go{transform:translateX(3px);color:var(--text)}}
.math,.recent{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:0 18px;margin:0 0 22px}
.math summary,.recent summary{cursor:pointer;font-weight:650;padding:15px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
.math summary::-webkit-details-marker{display:none}
.math summary::after{content:"";width:16px;height:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b95a1' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") center/16px no-repeat;transition:transform .2s}
.math[open] summary::after{transform:rotate(180deg)}
.math[open]{padding-bottom:6px}
.math ol{margin:0 0 .6em;padding-left:1.3em}
.math li{margin:.55em 0;word-break:break-word;max-width:none}
.recent ul{list-style:none;padding:0;margin:10px 0 0}
.recent li{display:flex;justify-content:space-between;gap:10px;border-top:1px dashed var(--line);padding:6px 0}
/* mobile result dock */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:45;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px max(14px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));background:var(--surface);color:var(--text);border-top:1px solid var(--line);box-shadow:0 -8px 28px rgba(17,24,39,.12);transform:translateY(110%);visibility:hidden;transition:transform .26s cubic-bezier(.2,.8,.2,1),visibility 0s .26s}
.dock.show{transform:none;visibility:visible;transition:transform .26s cubic-bezier(.2,.8,.2,1)}
.dock-main{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.dock-l{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dock-v{font-size:1.35rem;font-weight:780;letter-spacing:-.025em;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}
.dock .btn{min-height:44px;flex:none}
@media (min-width:980px){.dock{display:none!important}}

/* ---------- content widgets ---------- */
.fig{margin:1.2em 0 1.6em;text-align:center}
.fig figcaption{font-size:.85rem;color:var(--muted);margin-top:8px}
.dg{max-width:540px;width:100%;height:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:8px}
.dg .s{stroke:var(--primary);stroke-width:1.5;stroke-linejoin:round}
.dg .f1{fill:var(--dg1)}.dg .f2{fill:var(--dg2)}.dg .f3{fill:var(--dg3)}
.dg .d{stroke:var(--accent-ic);stroke-width:1.6;fill:none}
.dg .bar{stroke:var(--primary);stroke-width:2}
.dg .jt{stroke:var(--accent-ic);stroke-width:2;stroke-dasharray:5 3}
.dg text{font:600 12px var(--font);fill:var(--text)}
.dg .tl{font-weight:500;fill:var(--muted)}
.tbl-wrap{overflow-x:auto;margin:1.2em 0 1.6em;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);-webkit-overflow-scrolling:touch}
.tbl{border-collapse:separate;border-spacing:0;width:100%;min-width:420px;font-size:.92rem;font-variant-numeric:tabular-nums}
.tbl caption{caption-side:top;text-align:left;font-weight:700;padding:14px 14px 10px;letter-spacing:-.01em}
.tbl th,.tbl td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
.tbl thead th{background:var(--tint);text-align:right;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);border-top:1px solid var(--line)}
.tbl th[scope=row],.tbl thead th:first-child{text-align:left;position:sticky;left:0;background:var(--surface);z-index:1;font-weight:650}
.tbl thead th:first-child{background:var(--tint)}
.tbl tbody tr:nth-child(even) td,.tbl tbody tr:nth-child(even) th[scope=row]{background:color-mix(in srgb,var(--tint) 55%,var(--surface))}
.tbl tbody tr:last-child>*{border-bottom:0}
@media (hover:hover){.tbl tbody tr:hover>*{background:var(--tint)!important}}
.tbl-note{font-size:.8rem;color:var(--muted);margin:0;padding:10px 14px;border-top:1px solid var(--line)}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);margin:0 0 10px;padding:0 16px;transition:border-color .15s}
.faq details[open]{border-color:var(--line2);box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:650;padding:15px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;line-height:1.4}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:22px;height:22px;border-radius:50%;background:var(--tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23566170' stroke-width='2.6' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center/12px no-repeat;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0 0 16px;color:var(--muted);max-width:66ch}
.sources ul{font-size:.92rem}
.disc{font-size:.82rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;max-width:none!important}
.note-box{border:1px solid var(--peach-ln);border-radius:var(--r2);background:var(--peach);padding:14px 18px;margin:1.2em 0}
.cards{list-style:none;padding:0;margin:0 0 1em;display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
@media (min-width:600px){.cards{grid-template-columns:repeat(auto-fill,minmax(236px,1fr));gap:14px}}
.cards li{margin:0}
.card{position:relative;display:grid;grid-template-columns:auto 1fr auto;grid-template-areas:"i t g" "i d g";column-gap:14px;row-gap:1px;align-items:center;height:100%;padding:14px;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);color:var(--text);text-decoration:none;-webkit-tap-highlight-color:transparent;transition:transform .18s,border-color .18s,box-shadow .18s}
.card-i{grid-area:i;display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--peach);color:var(--accent-ic);transition:background .18s,color .18s}
.card-i .ico{width:24px;height:24px}
.card-t{grid-area:t;font-weight:680;letter-spacing:-.012em;line-height:1.3}
.card-d{grid-area:d;font-size:.86rem;color:var(--muted);line-height:1.4}
.card-go{grid-area:g;width:18px;height:18px;color:var(--faint);transition:transform .18s,color .18s}
@media (min-width:600px){.card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:18px}.card-i{margin-bottom:6px}.card-go{position:absolute;right:16px;top:20px}}
@media (hover:hover){.card:hover{border-color:var(--line2);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.card:hover .card-i{background:var(--accent);color:var(--on-accent)}.card:hover .card-go{transform:translateX(3px);color:var(--text)}}
.related h2{font-size:1.2rem}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--accent);color:var(--on-accent);font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.toc-inline{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:16px 18px;margin:0 0 30px}
.toc-inline h2{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.toc-inline ol{margin:0;columns:2;column-gap:32px;padding-left:1.3em}
.toc-inline li{break-inside:avoid;margin:.35em 0}
.toc-inline a{color:var(--text);text-decoration:none;font-weight:550;font-size:.93rem}
.toc-inline a:hover{color:var(--link);text-decoration:underline}
@media (max-width:620px){.toc-inline ol{columns:1}}

/* ---------- home ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(820px 340px at 88% -12%,var(--peach2),transparent 66%),radial-gradient(520px 260px at 4% 0%,var(--peach),transparent 70%),var(--bg);color:var(--text);padding:26px 0 8px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid-ln) 1px,transparent 1px),linear-gradient(90deg,var(--grid-ln) 1px,transparent 1px);background-size:36px 36px;-webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 80%);mask-image:linear-gradient(180deg,#000 0%,transparent 80%)}
.hero .wrap{position:relative}
.hero h1{color:var(--text);font-size:clamp(2.2rem,6.4vw,3.6rem);font-weight:800;letter-spacing:-.04em;margin-bottom:.3em}
.hero-p{color:var(--muted);max-width:54ch;font-size:clamp(1rem,2.4vw,1.15rem);line-height:1.6;margin-bottom:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;padding:6px 13px;border:1px solid var(--peach-ln);border-radius:999px;background:var(--peach);color:var(--advice-ink);font-size:.78rem;font-weight:650;letter-spacing:.01em}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--ring)}
.hero-links{display:flex;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:8px;align-items:center;margin:24px calc(var(--pad)*-1) 0;padding:2px var(--pad);color:var(--faint);font-size:.84rem}
.hero-links::-webkit-scrollbar{display:none}
.hero-links>span{flex:none;margin-right:4px}
.chip-link.on-dark{flex:none;background:var(--surface);border-color:var(--line2);color:var(--text)}
.chip-link.on-dark .ico{color:var(--accent-ic)}
@media (hover:hover){.chip-link.on-dark:hover{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}}
@media (min-width:760px){.hero{padding:44px 0 12px}.hero-links{flex-wrap:wrap;overflow:visible;margin-inline:0;padding-inline:0}}
.hero-calc{position:relative;z-index:2;margin-top:12px;padding-bottom:12px}
@media (min-width:760px){.hero-calc{margin-top:16px}}
.hero-calc .kit{margin-top:40px}
.hcalc{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}
@media (min-width:1180px){.hcalc{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);align-items:stretch;gap:22px}}
.hc-main{background:var(--surface);border:1px solid transparent;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-lg)}
/* shape tabs: flat line icons, one hairline under the row, one orange bar for the active tab */
.tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:0;padding:0 8px;border-bottom:1px solid var(--line)}
.tab{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:7px;padding:16px 2px 14px;border:0;border-radius:0;background:transparent;color:var(--faint);font:600 .78rem/1.2 var(--font);cursor:pointer;transition:color .15s;-webkit-tap-highlight-color:transparent;text-align:center}
.tab .ico{width:26px;height:26px;stroke-width:1.6}
.tab span{white-space:nowrap}
.tab::after{content:"";position:absolute;left:22%;right:22%;bottom:-1px;height:3px;border-radius:3px 3px 0 0;background:var(--accent);transform:scaleX(0);transition:transform .2s}
@media (hover:hover){.tab:not([aria-selected=true]):hover{color:var(--text)}}
.tab[aria-selected=true]{color:var(--text)}
.tab[aria-selected=true] .ico{color:var(--accent)}
.tab[aria-selected=true]::after{transform:scaleX(1)}
.tab:focus-visible{outline:2px solid var(--accent);outline-offset:-4px;border-radius:10px}
@media (min-width:520px){.tab{font-size:.88rem;padding:18px 4px 16px}.tab .ico{width:30px;height:30px}}
.hpanel{padding:22px 18px 24px}
@media (min-width:520px){.hpanel{padding:26px}}
.hpanel h2{font-size:1.28rem;margin-bottom:.3em}
/* panel: heading, form and the dimension diagram. The diagram sits beside the form on wider screens so each box can be matched to its label on the drawing; on phones it sits between the heading and the form. */
.hpanel{container-type:inline-size}
.hgrid{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:"head" "media" "form";gap:0}
.hhead{grid-area:head}
.hgrid>.hform{grid-area:form}
.hmedia{grid-area:media;display:flex;flex-direction:column;gap:12px;margin:0 0 22px;padding:14px;border-radius:14px;background:var(--tint)}
.hmedia img{display:block;width:100%;max-width:340px;height:auto;aspect-ratio:360/213;align-self:center;border-radius:10px;background:#fff}
@media (min-width:760px){.hgrid{grid-template-columns:minmax(0,1fr) 300px;grid-template-areas:"head head" "form media";column-gap:26px}.hmedia{margin:0;align-self:start;padding:12px}.hgrid .fgrid2{grid-template-columns:minmax(0,1fr)}.hgrid .fgrid2>.field>.inp{margin-bottom:10px}.hgrid .fgrid2>.field>.ctl{padding-bottom:10px}}
@container (min-width:720px){.hgrid .fgrid2{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.hgrid .fgrid2>.field>.inp{margin-bottom:16px}.hgrid .fgrid2>.field>.ctl{padding-bottom:16px}}
.formula{flex:1;min-width:0}
.formula .fk{margin:0 0 3px;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.formula p{margin:0;color:var(--muted);font-size:.86rem;line-height:1.5}
.hform{margin:0}
.hform .dim.k{font-weight:760;font-size:1.05rem;letter-spacing:.02em}
.hres{background:var(--panel-bg);color:var(--panel-ink);border:1px solid transparent;border-radius:var(--r);padding:22px 18px 20px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;min-width:0}
@media (min-width:520px){.hres{padding:26px}}
.hres h2{font-size:1rem;margin:0;color:var(--panel-ink)}
.hres-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}
.eg-pill{padding:3px 10px;border-radius:999px;background:var(--peach);box-shadow:inset 0 0 0 1px var(--peach-ln);color:var(--accent-ink);font-size:.72rem;font-weight:650;letter-spacing:.04em;text-transform:uppercase}
.hres-hero{display:flex;flex-direction:column;margin-bottom:14px}
.hres-hero .l{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--panel-accent)}
.hres-hero .big{font-size:clamp(2.3rem,9vw,3.3rem);line-height:1.05;letter-spacing:-.035em;font-weight:780;color:var(--panel-ink);font-variant-numeric:tabular-nums;margin-top:4px}
.mgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:8px}
.mgrid.two{grid-template-columns:repeat(2,1fr)}
.metric{background:var(--panel-card);border:0;border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;min-width:0}
.metric .l{font-size:.68rem;color:var(--panel-m);text-transform:uppercase;letter-spacing:.07em;font-weight:650}
.metric .v{font-weight:720;font-size:1rem;word-break:break-word;color:var(--panel-ink);font-variant-numeric:tabular-nums;margin-top:2px}
@media (max-width:420px){.mgrid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.mgrid .metric:nth-child(3){grid-column:1/-1}}
.hres .res-acts{margin-top:14px}
.hres .res-acts .btn{flex:1 1 0}
.hres .res-acts .btn:not(.pri){background:var(--tint);border-color:transparent;color:var(--text)}
.hres .metric{background:var(--tint)}
/* shape switcher above the calculator: light fill plus a thin outline, no separators */
.hero-calc .sw-chip{border-color:var(--line2);background:var(--surface)}
.hero-calc .sw-chip[aria-current=page]{background:var(--chip-on-bg);border-color:var(--chip-on-bg)}
@media (hover:hover){.hero-calc .sw-chip:not([aria-current]):hover{border-color:var(--accent);background:var(--peach)}}
.hero-calc .sw-label{border-left:0;margin-left:6px;padding-left:0}
.hero-calc .sw-sep{display:none}
.hero-calc .sw-more{border-style:solid}
/* calculator form: filled fields instead of outlined boxes, borderless chips, text-style Clear */
.hcalc .inp{border-color:transparent;background:var(--tint)}
.hcalc .inp:focus-within{background:var(--surface);border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
.hcalc .inp select{background-color:transparent;border-left:0;color:var(--muted)}
.hcalc .inp .clr{background:var(--line)}
.hcalc .field.bad .inp{border-color:var(--danger)}
.hcalc .chip{border-color:transparent;background:var(--tint);height:38px}
.hcalc .chip.on{background:var(--chip-on-bg)}
@media (hover:hover){.hcalc .chip:not(.on):hover{background:var(--peach);border-color:transparent}}
.hcalc .acts .btn:not(.pri){border-color:transparent;background:transparent;color:var(--muted);flex:none}
@media (hover:hover){.hcalc .acts .btn:not(.pri):hover{background:var(--tint);color:var(--text)}}
.hres-note{font-size:.8rem;color:var(--panel-m);margin:12px 0 0;line-height:1.55}
.hres-note a{color:var(--accent-ink)}
.hres .math{background:var(--panel-card);border-color:transparent;margin:14px 0 0}
.hres .math summary{color:var(--panel-ink);font-size:.92rem}
.hres .math li{color:var(--muted)}

.gt{font-weight:700;margin:8px 0 6px}
.proc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:10px 14px;margin:12px 0;font-size:.88rem;color:var(--muted)}
.twocol{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:900px){.twocol{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:44px}}
.stat{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:1em 0}
.stat div{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:14px 16px}
.stat b{display:block;font-size:1.35rem;letter-spacing:-.02em}
.stat span{font-size:.85rem;color:var(--muted)}
.cta{background:var(--peach);border:1px solid var(--peach-ln);color:var(--text);border-radius:var(--r);padding:34px 22px;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 220px at 50% -20%,var(--peach2),transparent 70%)}
.cta>*{position:relative}
.cta h2{color:var(--text)}
.cta p{color:var(--muted);max-width:60ch;margin-left:auto;margin-right:auto}
.cta a:not(.btn){color:var(--accent-ink)}
.cta .btn:not(.pri){background:var(--surface);border-color:var(--line2);color:var(--text)}
.cta .disc{color:var(--muted);border-top-color:var(--peach-ln);margin-top:22px}
@media (min-width:760px){.cta{padding:52px 40px}}

/* ---------- footer ---------- */
.site-foot{background:var(--surface);border-top:1px solid var(--line);color:var(--muted);padding:28px 0 36px;margin-top:24px}
.fgrid{display:grid;grid-template-columns:minmax(0,1fr);gap:22px}
.fbrand{grid-column:1/-1}
.fcol{min-width:0}
.fcol ul{display:grid;grid-template-columns:1fr 1fr;column-gap:16px}
@media (min-width:720px){.site-foot{padding:48px 0 56px}.fgrid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px}.fcol ul{display:block}}
@media (min-width:960px){.fgrid{grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px 28px}.fbrand{grid-column:auto}}
.fbrand .logo{color:var(--text);font-size:1.25rem;font-weight:700;letter-spacing:-.03em;white-space:normal}
.fbrand .logo-crop{color:var(--accent)}
.fbrand p{font-size:.92rem;line-height:1.65;margin:14px 0 0;max-width:42ch}
.g-pref{display:inline-flex;align-items:center;gap:10px;margin:0;padding:8px 16px 8px 12px;border:1px solid #dadce0;border-radius:8px;background:#fff;color:#202124;font-size:14px;font-weight:500;line-height:1.25;text-decoration:none;transition:background-color .15s ease,box-shadow .15s ease}
.fbrand .g-pref{margin-top:10px}
.g-pref svg{width:18px;height:18px;flex:none;display:block}
.g-pref:hover{background:#f8f9fa;color:#202124;text-decoration:none;box-shadow:0 1px 2px rgba(60,64,67,.3),0 1px 3px 1px rgba(60,64,67,.15)}
.g-pref:active{background:#f1f3f4;color:#202124;box-shadow:none}
.g-pref:focus-visible{background:#f8f9fa;color:#202124;text-decoration:none;outline:2px solid #1a73e8;outline-offset:2px}
button.g-pref{font-family:inherit;cursor:pointer}
.f-install{display:flex;width:fit-content;margin-top:10px}
[data-theme=dark] .g-pref{background:#1e2936;color:var(--text);border-color:var(--line2)}
[data-theme=dark] .g-pref:hover,[data-theme=dark] .g-pref:focus-visible{background:#283545;color:var(--text);box-shadow:none}
[data-theme=dark] .g-pref:active{background:#141c26;color:var(--text);box-shadow:none}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .g-pref{background:#1e2936;color:var(--text);border-color:var(--line2)}:root:not([data-theme=light]) .g-pref:hover,:root:not([data-theme=light]) .g-pref:focus-visible{background:#283545;color:var(--text);box-shadow:none}:root:not([data-theme=light]) .g-pref:active{background:#141c26;color:var(--text);box-shadow:none}}
.fbrand .btn{background:var(--surface)}
.fcol h2{font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;color:var(--faint);font-weight:700;margin:0 0 6px}
.fcol ul{list-style:none;padding:0;margin:0}
.fcol li{margin:0}
.fcol a{display:block;padding:7px 0;color:var(--text);text-decoration:none;font-size:.95rem;line-height:1.3;overflow-wrap:break-word}
.fcol a:hover{color:var(--accent-ink);text-decoration:underline}
.fdisc,.fcopy{font-size:.8rem;color:var(--faint);margin:30px 0 0;max-width:80ch;line-height:1.6}
.fcopy{margin-top:10px}
.fcopy a{color:var(--muted)}
.fbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
.fbar .fcopy{margin:0}
.flinks{display:flex;flex-wrap:wrap;gap:4px 18px}
.flinks a{font-size:.8rem;color:var(--muted);text-decoration:none;padding:4px 0}
.flinks a:hover{color:var(--accent-ink);text-decoration:underline}

/* ---------- floating buttons, dialogs, toast ---------- */
.fab{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px;z-index:30;transition:bottom .25s}
html.dock-on .fab{bottom:calc(84px + env(safe-area-inset-bottom))}
.fab-b{position:relative;width:46px;height:46px;border-radius:50%;border:1px solid var(--line2);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer;box-shadow:0 6px 20px rgba(16,22,29,.18);padding:0;-webkit-tap-highlight-color:transparent}
.fab-b .ico{width:21px;height:21px}
.fab-b:active{transform:scale(.94)}
.dlg{border:1px solid var(--line);border-radius:var(--r);padding:0;background:var(--surface);color:var(--text);width:min(480px,calc(100vw - 24px));max-height:86dvh;overflow:auto;box-shadow:var(--shadow-lg)}
.dlg::backdrop{background:rgba(6,9,13,.58);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.dlg[open]{animation:dlgin .22s cubic-bezier(.2,.8,.2,1)}
@keyframes dlgin{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.dlg-h{display:flex;justify-content:space-between;align-items:center;padding:14px 16px 14px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface);z-index:1}
.dlg-h h2{margin:0;font-size:1.05rem}

.toc-list{list-style:none;margin:0;padding:8px 8px 18px}
.toc-list li{margin:0}
.toc-list a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;color:var(--text);text-decoration:none;font-weight:550;line-height:1.3}
.toc-n{flex:none;display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--peach);color:var(--accent-ink);font:700 .78rem/1 var(--font);font-variant-numeric:tabular-nums}
.toc-t{min-width:0}
.toc-list a[aria-current]{background:var(--peach);color:var(--accent-ink);font-weight:650}
.toc-list a[aria-current] .toc-n{background:var(--accent);color:var(--on-accent)}
@media (hover:hover){.toc-list a:hover{background:var(--peach)}.toc-list a:hover .toc-n{background:var(--accent);color:var(--on-accent)}}
.toast{position:fixed;top:calc(var(--head-h) + 12px);right:16px;z-index:80;display:flex;align-items:flex-start;gap:10px;width:min(380px,calc(100vw - 32px));margin:0;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text);font:550 .92rem/1.45 var(--font);text-align:left;box-shadow:0 8px 28px rgba(16,20,28,.12);animation:toastin .22s cubic-bezier(.2,.8,.2,1)}
.toast-i{flex:none;display:grid;place-items:center;width:22px;height:22px;margin-top:1px;border-radius:50%}
.toast-i .ico{width:14px;height:14px}
.toast.ok .toast-i{background:var(--peach);color:var(--accent-ink)}
.toast.warn .toast-i{background:#fef3c7;color:#b45309}
.toast.err .toast-i{background:var(--danger-bg);color:var(--danger)}
.toast-t{min-width:0}
@keyframes toastin{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .toast{box-shadow:0 12px 32px rgba(0,0,0,.4)}:root:not([data-theme=light]) .toast.warn .toast-i{background:rgba(251,191,36,.16);color:#fbbf24}}
[data-theme=dark] .toast{box-shadow:0 12px 32px rgba(0,0,0,.4)}
[data-theme=dark] .toast.warn .toast-i{background:rgba(251,191,36,.16);color:#fbbf24}
/* mobile bottom sheets */
@media (max-width:640px){
.dlg:not(.find-dlg){margin:auto 0 0;width:100%;max-width:none;border-radius:var(--r) var(--r) 0 0;max-height:88dvh;border-bottom:0;padding-bottom:env(safe-area-inset-bottom)}
.dlg:not(.find-dlg)[open]{animation:sheetin .3s cubic-bezier(.2,.8,.2,1)}
}
@keyframes sheetin{from{transform:translateY(100%)}to{transform:none}}

/* ---------- search dialog ---------- */
.find-dlg{padding:0;width:min(660px,calc(100vw - 24px));margin:10vh auto auto;max-height:min(72dvh,640px);overflow:hidden;border-radius:18px}
.find-dlg[open]{display:flex;flex-direction:column}
.find-top{display:flex;align-items:center;gap:10px;padding:6px 10px 6px 16px;border-bottom:1px solid var(--line);flex:none}
.find-top>.ico{color:var(--accent-ic);width:22px;height:22px}
.find-top input{flex:1;min-width:0;height:54px;border:0;outline:0;background:transparent;font:500 1.1rem/1 var(--font);color:var(--text);-webkit-appearance:none;appearance:none}
.find-top input::-webkit-search-cancel-button{display:none}
.find-x{flex:none;cursor:pointer}
.find-body{overflow-y:auto;overscroll-behavior:contain;padding:8px 8px 12px;flex:1;-webkit-overflow-scrolling:touch}
.find-h{font-size:.68rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:var(--faint);margin:12px 10px 6px}
.find-it{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:12px;color:var(--text);text-decoration:none;min-height:56px}
.find-it .fi{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--peach);color:var(--accent-ic);flex:none}
.find-it .fi .ico{width:20px;height:20px}
.find-it .ft{display:flex;flex-direction:column;min-width:0;flex:1;line-height:1.3}
.find-it .ft b{font-weight:650;font-size:.97rem}
.find-it .ft small{color:var(--muted);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.find-it .fk{flex:none;font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);padding:3px 8px;border:1px solid var(--line);border-radius:999px}
.find-it[aria-selected=true]{background:var(--peach)}
.find-it[aria-selected=true] .fi{background:var(--accent);color:var(--on-accent)}
.find-it mark{background:var(--ring);color:inherit;border-radius:3px;padding:0 1px}
.find-empty{padding:30px 16px;text-align:center;color:var(--muted)}
.find-help{display:none;flex:none;margin:0;padding:9px 16px;border-top:1px solid var(--line);font-size:.76rem;color:var(--faint);background:var(--tint);gap:6px;align-items:center}
@media (hover:hover) and (min-width:700px){.find-help{display:flex}}
@media (max-width:640px){
.find-dlg{width:100%;max-width:none;height:100dvh;max-height:none;margin:0;border:0;border-radius:0}
.find-dlg[open]{animation:fadein .18s}
.find-top{padding-top:max(6px,env(safe-area-inset-top))}
.find-body{padding-bottom:calc(20px + env(safe-area-inset-bottom))}
}
@keyframes fadein{from{opacity:0}to{opacity:1}}

/* ---------- history, glossary ---------- */
.narrow{max-width:860px}
.empty{background:var(--surface);border:1.5px dashed var(--line2);border-radius:var(--r);padding:28px 22px;text-align:center}
.empty .btn{margin:4px}
.steps{margin:0 0 1em;padding-left:1.4em}
.steps li{margin:.5em 0;word-break:break-word}
.pg-home .steps{list-style:none;padding:0;margin:0 0 8px;display:grid;gap:12px}
.pg-home .steps:has(+ .tool-ai){margin-bottom:0}
#how-it-works .tool-ai{margin-top:20px}
@media (min-width:800px){.pg-home .steps{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch}}
.pg-home .steps li{margin:0;display:flex;gap:12px;align-items:flex-start;height:100%;padding:16px;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface)}
.feat-grid{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.feat-grid li{margin:0;display:flex;flex-direction:column;align-items:flex-start;gap:10px;min-width:0;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:20px 18px 18px}
.feat-grid h3{margin:0;font-size:1.05rem;line-height:1.3}
.feat-grid p{margin:0}
.feat-i{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--peach);color:var(--accent);flex:none}
.feat-i .ico{width:22px;height:22px}
.feat-lg .feat-i{width:56px;height:56px;border-radius:16px}
.feat-lg .feat-i .ico{width:30px;height:30px}
.feat-lg li{gap:14px;padding:22px 20px 20px}
@media (min-width:800px){.feat-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch}}
.pg-home .steps li>span{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--peach);color:var(--accent);flex:none}
.pg-home .steps h3{margin:2px 0 4px;font-size:1rem}
.pg-home .steps p{margin:0}
.gloss{margin:0 0 1em}
.gloss dt{font-weight:700;margin-top:16px;scroll-margin-top:90px}
.gloss dd{margin:2px 0 0;max-width:70ch}
.pg-home .sec p{max-width:72ch}
#main{position:relative;isolation:isolate}
#main::before{content:"";position:absolute;z-index:0;left:0;right:0;top:0;height:34vh;pointer-events:none;background:linear-gradient(to bottom right,#d7f3ec 0%,var(--bg) 24%)}
#main>*{position:relative;z-index:1}
[data-theme=dark] #main::before{background:linear-gradient(to bottom right,rgba(45,212,191,.12) 0%,var(--bg) 24%)}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) #main::before{background:linear-gradient(to bottom right,rgba(45,212,191,.12) 0%,var(--bg) 24%)}}
@media print{#main::before{display:none}}
.res-card dl.cols{display:block}
.two{display:grid;gap:12px;min-width:0}
@media (min-width:620px){.two{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.twocol>.two{display:block}

/* ---------- sponsored units (containers exist only when data/ads.json mode != off) ---------- */
.ccu{margin:20px calc(var(--pad)*-1);padding:0;text-align:center}
.ccu-in{display:flex;justify-content:center;align-items:flex-start;overflow:hidden}
.ccu-sq,.ccu-wide{background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}
.ccu-ph{border:2px dashed var(--line2);color:var(--muted);padding:40px 20px;font-size:12px}
@media (min-width:760px){.ccu{margin-inline:0}}
.ccu-sq{width:336px;max-width:100%;height:280px;min-height:0;padding:0;margin-inline:auto;overflow:hidden;border:0;border-radius:0;background:transparent;box-shadow:none}
.ccu-sq .ccu-in{display:block;width:336px;max-width:100%;height:280px;line-height:0}
.ccu-sq .ccu-in ins{display:block!important;margin:0;vertical-align:top}
.ccu-wide{min-height:280px}
@media (min-width:760px){.ccu-wide{width:auto;min-height:90px;height:auto}.ccu-wide .ccu-in{width:auto;height:90px;max-width:100%}}
@media (max-width:359px){.ccu-sq,.ccu-wide{display:none}}
html.ccu-sq300 .ccu-sq,html.ccu-sq300 .ccu-wide{display:block;width:300px;min-height:250px}
html.ccu-sq300 .ccu-sq .ccu-in,html.ccu-sq300 .ccu-wide .ccu-in{width:300px;height:250px}
.page-shell{display:block}
@media (min-width:1500px){.page-shell{display:grid;grid-template-columns:160px minmax(0,1120px) 160px;gap:16px;justify-content:center}.rail-col{position:sticky;top:84px;align-self:start;min-height:620px}.rail-col .ccu{margin:32px 0}
.page-shell .hero{width:100vw;margin-left:calc(50% - 50vw)}}
@media (max-width:1499px){.rail-col{display:none}}
.sidebar .ccu-sq{position:static}
@media (min-width:1100px){.ccu[data-place="in-2"]:not(.ccu-keep){display:none}}
@media (min-width:760px){.ccu[data-place="home-3"]{display:none}}
@media (max-width:1099px){.ccu[data-place="home-2"]:not(.ccu-keep){margin-top:24px}}
.ccu:has(ins.adsbygoogle[data-ad-status="unfilled"]){display:none}

/* ---------- print ---------- */
@media print{.site-head,.site-foot,.fab,.res-acts,.acts,.kit,.ccu,.rail-col,.sidebar,.crumbs,.presets,.opts,.dlg,.toast,.skip,.switcher,.dock,.seg,.badges,.meta-row .btn,.hero-links{display:none!important}body{background:#fff;color:#000}.calc-in,.result{box-shadow:none;border-color:#999}.result,.hres{background:#fff!important;color:#000!important}.res-num,.res-card dd,.metric .v,.hres-hero .big{color:#000!important}.res-sub,.res-card dt,.res-label{color:#444!important}.layout{display:block}.calc-grid{display:block}.calc-out{position:static;max-height:none;overflow:visible}.hero{background:#fff;color:#000;padding:0}.hero h1,.hero-p{color:#000}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* ---------- refinements ---------- */
@media (min-width:960px){.find{border-radius:999px}.find kbd{border-radius:999px}}
.page-head h1{letter-spacing:-.035em}
.calc-in,.res-card,.side-box,.kit a,.card,.faq details,.math,.recent,.tbl-wrap,.toc-inline,.note-box,.stat div{border-color:var(--line)}
.calc-in{padding-top:22px}
label{letter-spacing:.005em}
.side-box h2,.toc-inline h2,.presets-l,.sw-label,.mn-h,.find-h,.formula .fk{color:var(--faint)}
.tbl thead th{background:var(--tint)}
.faq summary:hover{color:var(--accent-ink)}

/* ---------- input diagrams (markers A, B, C ...) ---------- */
.mfig{margin:0 0 16px;padding:6px 10px 2px;border:1px solid var(--line);border-radius:var(--r2);background:var(--bg)}
.mfig .dg{display:block;margin:0 auto;border:0;padding:0;background:none;max-width:440px;width:100%;height:auto}
.mfg>text{paint-order:stroke;stroke:var(--bg);stroke-width:3.5px;stroke-linejoin:round}
.dg .mk{cursor:pointer;transform-box:fill-box;transform-origin:center;transition:transform .15s}
.dg .mk circle{fill:var(--accent);stroke:var(--bg);stroke-width:2}
.dg .mk text{fill:var(--on-accent);font:700 11px var(--font);stroke:none}
.dg .mk.hl{transform:scale(1.28)}
.dg .mk.hl circle{stroke:var(--ring);stroke-width:5}
.dg .d{stroke-linecap:round}
.dg .dot{fill:var(--accent-ic)}
.dg .ext{stroke:var(--faint);stroke-width:1;stroke-dasharray:3 3;fill:none}
.dg .op{fill:var(--bg);stroke:var(--primary);stroke-width:1.4;stroke-dasharray:4 3}
.dg .hatch{fill:var(--peach2);stroke:var(--primary);stroke-width:1.5;stroke-linejoin:round}
.dg .pick{fill:var(--peach2);stroke:var(--accent-ic);stroke-width:2}
.dg .card{fill:var(--surface);stroke:var(--line2);stroke-width:1.2}
.dg .ic{fill:none;stroke:var(--primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.dg text.sub,.dg text.val{font-weight:700}
.dg text.big{font:500 26px var(--font);fill:var(--faint)}
.mk-b{flex:none;display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--accent);color:var(--on-accent);font:700 .68rem/1 var(--font);font-style:normal;transition:box-shadow .15s}
.field.hl .mk-b{box-shadow:0 0 0 3px var(--ring)}

/* ---------- aligned fields: labels share a row, inputs share a row ---------- */
label{display:flex;align-items:center;gap:8px;line-height:1.3}
.fgrid2{row-gap:0;column-gap:16px}
.fgrid2>.field>.ctl{padding-bottom:16px}
.fgrid2>.field>.inp{margin-bottom:16px}
.fgrid2>.field>label{align-self:end}
@media (min-width:520px){.fgrid2>.field{display:grid;grid-row:span 2;grid-template-rows:subgrid;grid-template-columns:minmax(0,1fr)}.fgrid2>.field>*{min-width:0}}
.fgrid2>.field.wide{grid-column:1/-1}
.res-empty{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:6px 0 4px}
.res-empty-ic{display:grid;place-items:center;width:44px;height:44px;margin-bottom:6px;border-radius:12px;background:var(--panel-card);box-shadow:inset 0 0 0 1px var(--panel-ln);color:var(--panel-accent)}
.res-empty-ic .ico{width:22px;height:22px}
.res-empty-t{margin:0;font-size:1.15rem;font-weight:700;color:var(--panel-ink)}
.res-empty-s{margin:0;font-size:.9rem;line-height:1.5;color:var(--panel-m)}
.full-link{display:inline-flex;align-items:center;gap:6px;margin:-8px 0 20px;font-size:.86rem;font-weight:600;color:var(--accent-ink);text-decoration:none}
.full-link .ico{width:15px;height:15px;transition:transform .15s}
@media (hover:hover){.full-link:hover{text-decoration:underline}.full-link:hover .ico{transform:translateX(3px)}}
.hres.is-empty .big,.hres.is-empty .metric .v{color:var(--panel-m)}
.hres.is-empty .big{font-weight:600}
.fgroup{grid-column:1/-1;display:flex;align-items:baseline;flex-wrap:wrap;gap:2px 12px;margin:0 0 14px;padding:0 0 7px;border-bottom:1px solid var(--line)}
.fgroup:not(:first-child){margin-top:10px}
.fgroup h3{margin:0;font-size:.74rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-ink)}
.fgroup p{margin:0;font-size:.82rem;color:var(--muted);line-height:1.4}
.inp select{width:86px;min-width:86px;max-width:86px}

/* ---------- icons in place of narration ---------- */
/* quick examples: hidden for now. Set display back to flex to show the strip. */
.presets{display:none;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 16px;padding:0;border:0;background:none}
.presets-l{flex:none;margin:0;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.presets-row{flex:1;min-width:0;flex-wrap:wrap;overflow:visible;margin:0;padding:0}
.presets .chip{height:32px;min-width:0;padding:0 12px;font-size:.84rem}
.hl-ic,.try-l{flex:none;display:inline-grid;place-items:center;width:34px;height:34px;margin:0 2px 0 0;border-radius:50%;background:var(--peach);color:var(--accent-ic)}
.hl-ic .ico,.try-l .ico{width:18px;height:18px}
.sw-icon{width:40px;padding:0;justify-content:center}
.sw-icon .ico{color:var(--muted)}
.chip-link.on-dark:has(>.sr){padding:0 11px}
.kit-h{display:flex;align-items:center;gap:8px}
.kit-h .ico{width:20px;height:20px;color:var(--accent-ic)}
.kit-tag{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:650;color:var(--ok)}
.kit-tag .ico{width:15px;height:15px}

/* ---------- share dialog ---------- */
.dlg-h h2{display:flex;align-items:center;gap:10px}
.dlg-h h2 .ico{color:var(--accent-ic)}
.share-dlg{width:min(460px,calc(100vw - 24px));border-radius:24px}
.share-body{display:grid;gap:16px;padding:16px 20px 24px}
.share-prev{padding:14px 16px;border-radius:16px;background:var(--tint);border:1px solid var(--line)}
.share-prev p{margin:0 0 6px;font-size:.93rem;line-height:1.5;color:var(--text)}
.share-prev a{display:block;font-size:.88rem;font-weight:600;color:var(--accent-ink);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.share-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px 4px;padding:4px 0 0}
.sh{display:flex;flex-direction:column;align-items:center;gap:8px;padding:0;border:0;background:none;color:var(--muted);text-decoration:none;cursor:pointer;font:500 .76rem/1.2 var(--font);-webkit-tap-highlight-color:transparent;min-width:0}
.sh-t{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sh-i{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--b);color:var(--on,#fff);transition:transform .15s,filter .15s}
.sh-i .ico{width:24px;height:24px}
.sh.ok .sh-i{background:var(--ok)}
.sh:active .sh-i{transform:scale(.93)}
@media (hover:hover){.sh:hover .sh-i{transform:translateY(-2px);filter:brightness(1.08)}.sh:hover{color:var(--text)}}
@media (max-width:380px){.share-grid{gap:18px 0}.sh-i{width:48px;height:48px}}

/* ---------- FAB: share + page contents (hover card on mouse devices) ---------- */
.fab-b{transition:border-color .15s,color .15s,transform .1s,box-shadow .15s}
@media (hover:hover){.fab-b:hover,.fab-toc.open .fab-b{border-color:var(--accent-ic);color:var(--accent-ic)}}
.fab-toc{position:relative}
.toc-pop{position:absolute;right:100%;bottom:0;padding-right:10px;width:min(320px,calc(100vw - 28px));opacity:0;visibility:hidden;transform:translateX(6px);transition:opacity .16s,transform .16s,visibility 0s .16s;pointer-events:none}
.toc-pop-in{background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-lg);padding:14px 8px 8px;max-height:min(62dvh,520px);overflow:auto;overscroll-behavior:contain}
.toc-pop-h{margin:0 12px 6px;font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.toc-pop ul{list-style:none;margin:0;padding:0}
.toc-pop a{display:block;padding:9px 12px;border-radius:12px;color:var(--text);text-decoration:none;font-size:.92rem;font-weight:500;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc-pop a[aria-current]{color:var(--accent-ink);font-weight:650}
@media (hover:hover) and (pointer:fine){
  .fab-toc:not(.quiet):hover .toc-pop,.fab-toc:not(.quiet):focus-within .toc-pop,.fab-toc.open .toc-pop{opacity:1;visibility:visible;transform:none;transition-delay:0s;pointer-events:auto}
  .toc-pop a:hover,.toc-pop a:focus-visible{background:var(--peach);color:var(--accent-ink)}
}
@media not all and (hover:hover) and (pointer:fine){.toc-pop{display:none}}

/* diagram sits above the form on phones, above the result on desktop */
.calc-out{display:contents}
.calc-out>.mfig{order:-1;margin:0}
.calc-grid{row-gap:16px}
.calc-out>.res-acts{margin-top:-6px}
@media (min-width:980px){
.calc-out{display:block}
.calc-out>.mfig{order:0;margin:0 0 16px}
.calc-out>.res-acts{margin-top:12px}
}
/* search dialog field: no extra ring */
.find-top{gap:12px;padding:8px 12px 8px 16px;padding-top:max(8px,env(safe-area-inset-top))}
.find-top input{height:44px;padding:0 4px;border:0;border-radius:0;background:transparent;box-shadow:none;font-size:1.05rem}
.find-top input:focus,.find-top input:focus-visible{outline:0;box-shadow:none;border:0}
.find-dlg:focus,.find-dlg:focus-visible{outline:0}
@media (hover:hover) and (min-width:960px){.find:hover{background:var(--surface);border-color:var(--accent-press)}}
@media (min-width:960px) and (max-width:1099px){.find{min-width:36px;width:36px;max-width:36px;padding:0;gap:0;justify-content:center;background:transparent}.find .find-t,.find kbd{display:none}}
/* Home: two equal-height feature cards (cost snapshot + quick charts) */
.duo{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){.duo{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:24px}}
.duo-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow);min-width:0}
.duo-head{display:flex;align-items:center;gap:14px;margin-bottom:10px}
.duo-head h2{margin:0;font-size:1.3rem}
.duo-head .card-i{flex:none}
.duo-card>p{margin:0;color:var(--muted)}
.pgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:18px 0 0}
.pg{display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--line);border-radius:var(--r3);background:var(--tint)}
.pg .l{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.pg .v{font-size:1.2rem;font-weight:760;letter-spacing:-.02em;font-variant-numeric:tabular-nums;white-space:nowrap}
.pg small{font-size:.8rem;color:var(--muted)}
.duo-links{list-style:none;margin:16px 0 0;padding:0;display:grid;grid-template-columns:minmax(0,1fr);gap:8px}
.duo-links li{margin:0;min-width:0}
.duo-links a,.duo-links .pr{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r3);background:var(--surface);color:var(--text);text-decoration:none;min-height:60px}
.duo-links .pv{flex:none;font-size:1.02rem;font-weight:760;letter-spacing:-.01em;font-variant-numeric:tabular-nums;white-space:nowrap}
.duo-links .card-i{flex:none;width:38px;height:38px;margin:0}
.dl-t{display:flex;flex-direction:column;min-width:0;flex:1;line-height:1.3}
.dl-t b{font-weight:650;font-size:.95rem}
.dl-t small{color:var(--muted);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dl-go{flex:none;width:18px;height:18px;color:var(--faint);transition:transform .15s,color .15s}
@media (hover:hover){.duo-links a:hover{border-color:var(--accent);background:var(--peach)}.duo-links a:hover .card-i{background:var(--accent);color:var(--on-accent)}.duo-links a:hover .dl-go{transform:translateX(3px);color:var(--text)}}
.duo-foot{margin-top:auto;padding-top:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.duo-more{display:inline-flex;align-items:center;gap:6px;font-weight:650;font-size:.93rem;text-decoration:none}
.duo-more .ico{width:16px;height:16px}
/* Home closing call-to-action: one line of copy + two buttons */
.cta2{display:flex;align-items:center;gap:20px;flex-wrap:wrap;background:var(--peach);border:1px solid var(--peach-ln);border-radius:var(--r);padding:26px 28px}
.cta2-i{flex:none;display:grid;place-items:center;width:56px;height:56px;border-radius:16px;background:var(--accent);color:var(--on-accent)}
.cta2-i .ico{width:28px;height:28px}
.cta2-t{flex:1 1 320px;min-width:0}
.cta2-t h2{margin:0;font-size:1.4rem;letter-spacing:-.02em}
.cta2-t p{margin:6px 0 0;color:var(--muted);max-width:56ch}
.cta2-b{display:flex;gap:10px;flex-wrap:wrap}
.cta2-b .btn:not(.pri){background:var(--surface)}
@media (max-width:640px){.cta2{padding:22px 18px}.cta2-b{width:100%}.cta2-b .btn{flex:1 1 0}}

/* ---------- home: "How much concrete do I need?" ---------- */
.how{display:grid;gap:28px;grid-template-columns:minmax(0,1fr);align-items:start}
@media (min-width:960px){.how{grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:48px}}
.how-intro>h2{margin-top:0}
.how-intro p{max-width:68ch}
.how-cov{min-width:0}
.how-cov .tbl-wrap{margin:0}
.how-cov .tbl{min-width:0}
.how-ex{display:grid;gap:16px;grid-template-columns:minmax(0,1fr);margin:32px 0 24px}
@media (min-width:760px){.how-ex{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
.how-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 6px;min-width:0}
.how-card h3{margin:0 0 .5em;font-size:1.05rem}
.how-card p{margin:0 0 1em;line-height:1.7}
.band>.wrap>p{max-width:68ch}

/* ---------- sections: one page colour, separated by thin lines; the footer sits right under the last section ---------- */
.band{border-top:1px solid var(--line)}
.band.alt,.band.tint{background:transparent;border-block:0;border-top:1px solid var(--line)}
.site-foot{margin-top:0}
body:not(.pg-home) #main{padding-bottom:56px}

/* ---------- results breakdown: key tiles + quiet detail panel ---------- */
.res-sum-h{display:flex;align-items:center;gap:10px;margin:0 0 14px}
.res-ok{flex:none;width:28px;height:28px;padding:6px;border-radius:50%;background:var(--accent);color:#fff}
.res-sum-t{flex:none;font-size:1.2rem;font-weight:760;letter-spacing:-.015em;color:var(--text);white-space:nowrap}
.res-sum-s{margin-left:auto;min-width:0;font-size:.82rem;color:var(--muted);text-align:right;line-height:1.35}
.result,.hres{scroll-margin-top:84px}
@media (max-width:640px){
  .res-sum-h{flex-wrap:wrap;row-gap:2px}
  .res-sum-s{flex:1 0 100%;margin-left:38px;text-align:left}
}
.res-key{display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
.kpi{display:flex;flex-direction:column;gap:2px;min-width:0;background:var(--peach);border:1px solid var(--peach-ln);border-radius:var(--r2);padding:16px 18px 15px}
.kpi-l{font-size:.74rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-ink)}
.kpi-v{display:block;margin:5px 0 3px;font-size:clamp(1.6rem,2.5vw,2.2rem);line-height:1.12;font-weight:780;letter-spacing:-.03em;color:var(--text);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.kpi-v small{margin-left:6px;font-size:.48em;font-weight:650;letter-spacing:0;color:var(--muted)}
.kpi-s{font-size:.88rem;line-height:1.45;color:var(--muted)}
.kpi-f{margin-top:6px;font-size:.78rem;line-height:1.4;color:var(--faint)}
.res-more-h{margin:24px 0 10px;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.res-more{display:grid;grid-template-columns:minmax(0,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.res-sum-h+.res-more{margin-top:0}
.res-card{min-width:0;background:var(--surface);padding:15px 18px}
.res-card h3{margin:0 0 6px;font-size:.84rem;font-weight:700;letter-spacing:0;text-transform:none;color:var(--text)}
.res-card dl{margin:0}
.res-card dl>div{display:flex;justify-content:space-between;gap:14px;padding:4px 0;font-size:.86rem;line-height:1.4}
.res-card dt{color:var(--muted)}
.res-card dd{margin:0;font-weight:600;text-align:right;color:var(--text);font-variant-numeric:tabular-nums}
@media (min-width:560px){
  .res-key[data-n="2"]{grid-template-columns:repeat(2,minmax(0,1fr))}
  .res-key[data-n="4"]{grid-template-columns:repeat(2,minmax(0,1fr))}
  .res-more{grid-template-columns:repeat(2,minmax(0,1fr))}
  .res-more>.res-card:last-child:nth-child(odd){grid-column:span 2}
}
@media (min-width:760px){.res-key[data-n="3"]{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (min-width:960px){
  .res-key[data-n="4"]{grid-template-columns:repeat(4,minmax(0,1fr))}
  .res-more[data-n="3"],.res-more[data-n="6"]{grid-template-columns:repeat(3,minmax(0,1fr))}
  .res-more[data-n="4"]{grid-template-columns:repeat(4,minmax(0,1fr))}
  .res-more[data-n="5"]{grid-template-columns:repeat(6,minmax(0,1fr))}
  .res-more[data-n="5"]>.res-card{grid-column:span 2}
  .res-more[data-n="5"]>.res-card:nth-child(n+4){grid-column:span 3}
  .res-more[data-n="3"]>.res-card:last-child,.res-more[data-n="4"]>.res-card:last-child,.res-more[data-n="6"]>.res-card:last-child{grid-column:auto}
}
@media print{.res-sum-s{display:none}.kpi{background:#fff;border-color:#999}.res-ok{background:#000}}

/* calculator switcher on phones: wrap (no side-swiping), two rows until "Show all" is tapped */
.sw-toggle{display:none}
@media (max-width:699px){
.sw-wrap{margin-inline:0;margin-bottom:12px}
.sw-wrap .sw-track{flex-wrap:wrap;overflow:visible;gap:6px;padding:2px 0 4px;-webkit-mask-image:none;mask-image:none}
.sw-wrap .sw-chip{height:34px;padding:0 11px 0 9px;gap:5px;font-size:.82rem}
.sw-wrap .sw-chip .ico{width:15px;height:15px}
.sw-wrap .sw-chip[aria-current=page]{order:-1}
.sw-wrap .sw-arrow{display:none!important}
.sw-wrap:not(.is-open) .sw-track{max-height:82px;overflow:hidden}
.sw-toggle{display:inline-flex;align-items:center;gap:6px;margin:4px 0 0;padding:6px 2px;border:0;background:none;color:var(--accent-ink);font:650 .84rem/1 var(--font);cursor:pointer}
.sw-toggle[hidden]{display:none}
.sw-toggle .ico{width:15px;height:15px;transform:rotate(90deg);transition:transform .15s}
.sw-wrap.is-open .sw-toggle .ico{transform:rotate(-90deg)}
}
/* AI summarize block: same card as "Works with", sitting above it in the right column */
.ai-sum{display:flex;flex-direction:column;align-items:stretch;background:color-mix(in srgb,var(--accent) 4%,var(--surface));border:1px solid color-mix(in srgb,var(--accent) 18%,var(--line));border-radius:var(--r2);padding:16px 14px;margin:0 0 16px}
.ai-t{display:flex;align-items:center;gap:6px;margin:0 0 8px 6px;font-size:.72rem;font-weight:650;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.ai-t .ico{width:15px;height:15px;color:var(--faint)}
.ai-l{display:flex;flex-direction:column;gap:2px}
.tool-ai{margin:20px 0 28px}
.cc-tool:has(+ .tool-ai){margin-bottom:0}
.tool-ai .ai-sum{flex-direction:row;flex-wrap:nowrap;align-items:center;gap:2px 4px;padding:8px 8px 8px 16px;margin:0}
.tool-ai .ai-t{margin:0 8px 0 0;flex:none}
.tool-ai .ai-l{flex-direction:row;flex-wrap:nowrap;min-width:0}
.ai-b{display:flex;gap:8px;align-items:center;min-height:40px;padding:7px 10px;border:1px solid transparent;border-radius:999px;background:transparent;color:var(--text);font:550 .93rem/1.2 var(--font);text-decoration:none;transition:background .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease}
.ai-b .ico{width:18px;height:18px;flex:none;color:var(--text);transition:color .16s ease}
.ai-b:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.ai-b:active{background:color-mix(in srgb,var(--accent) 14%,var(--surface));box-shadow:none}
@media (hover:hover){
  .ai-b:hover{background:var(--surface);border-color:color-mix(in srgb,var(--accent) 32%,var(--line2));box-shadow:0 1px 2px rgba(15,23,42,.05),0 8px 18px color-mix(in srgb,var(--accent) 18%,transparent);color:var(--text)}
  .ai-b:hover .ico{color:var(--accent)}
}
@media (hover:hover) and (prefers-color-scheme:dark){
  :root:not([data-theme=light]) .ai-b:hover{background:color-mix(in srgb,var(--accent) 20%,var(--surface));border-color:color-mix(in srgb,var(--accent) 48%,var(--line2));box-shadow:0 8px 18px rgba(0,0,0,.32)}
}
@media (hover:hover){[data-theme=dark] .ai-b:hover{background:color-mix(in srgb,var(--accent) 20%,var(--surface));border-color:color-mix(in srgb,var(--accent) 48%,var(--line2));box-shadow:0 8px 18px rgba(0,0,0,.32)}}
@media (max-width:699px){
  .tool-ai .ai-sum,.layout>.sidebar>.ai-sum{flex-direction:column;align-items:stretch;gap:4px;padding:12px 12px 8px}
  .tool-ai .ai-t,.layout>.sidebar>.ai-sum>.ai-t{margin:0 4px 2px}
  .tool-ai .ai-l,.layout>.sidebar>.ai-sum>.ai-l{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;width:100%}
  .tool-ai .ai-b,.layout>.sidebar>.ai-sum .ai-b{justify-content:center;gap:6px;min-width:0;padding:8px 4px;font-size:.8rem}
  .tool-ai .ai-b span,.layout>.sidebar>.ai-sum .ai-b span{white-space:nowrap}
  .tool-ai .ai-b .ico,.layout>.sidebar>.ai-sum .ai-b .ico{width:16px;height:16px}
}
@media (max-width:389px){
  .tool-ai .ai-l,.layout>.sidebar>.ai-sum>.ai-l{grid-template-columns:1fr}
  .tool-ai .ai-b,.layout>.sidebar>.ai-sum .ai-b{justify-content:flex-start;padding:8px 10px;font-size:.93rem}
}
@media (min-width:700px) and (max-width:1079px){
  .layout>.sidebar>.ai-sum{flex-direction:row;flex-wrap:nowrap;align-items:center;gap:4px;padding:8px 8px 8px 16px}
  .layout>.sidebar>.ai-sum>.ai-t{margin:0 8px 0 0;flex:none}
  .layout>.sidebar>.ai-sum>.ai-l{flex-direction:row;flex-wrap:nowrap}
}
@media (max-width:1079px){
  .layout:has(.ai-sum){display:flex;flex-direction:column}
  .layout:has(.ai-sum)>.sidebar{display:block;order:-1;margin-bottom:8px}
  .layout:has(.ai-sum)>.sidebar .side-box,
  .layout:has(.ai-sum)>.sidebar .side-sticky{display:none}
}
@media print{.ai-sum{display:none!important}}

/* ---------- aspect-ratio tool ---------- */
.wrap{max-width:1120px}
.ib,.fab-b,.chip,.tab,.ar-ico{min-width:44px;min-height:44px}
.ar-tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;margin:0 0 32px}
.ar-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}
.ar-tabs .tab{min-height:52px;flex-direction:row;gap:8px;padding:10px}
.ar-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;padding:18px}
@media (min-width:900px){.ar-grid{grid-template-columns:minmax(0,1fr) minmax(0,.95fr);padding:22px;align-items:start}}
.ar-fields{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}
.ar-in{display:flex;align-items:stretch;border:1px solid var(--line);border-radius:12px;background:var(--surface);min-height:48px}
.ar-in:focus-within{border-color:var(--accent)}
.ar-in .pfx{display:grid;place-items:center;padding:0 10px;font-weight:700;font-size:.8rem;color:var(--muted);border-inline-end:1px solid var(--line)}
.ar-in input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:16px;font-weight:650;font-variant-numeric:tabular-nums;padding:0 12px;min-height:48px}
.ar-in.bad{border-color:var(--danger)}
.ar-chips{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 0 8px;scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.ar-chips .chip{scroll-snap-align:start;min-height:44px}
.ar-ico-row{display:flex;gap:4px;justify-content:flex-end}
.ar-ico-row button{width:44px;height:44px;min-width:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer;padding:0}
.ar-res{background:var(--accent-soft);border:1px solid var(--line);border-radius:var(--r2);padding:18px;position:relative}
.ar-res .big{font-size:clamp(2rem,7vw,3.1rem);font-weight:800;letter-spacing:-.04em;font-variant-numeric:tabular-nums;line-height:1.05}
.ar-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:.78rem;font-weight:650}
.ar-preview{max-height:280px;display:grid;place-items:center;background:var(--tint);border-radius:var(--r2);padding:16px;min-height:160px}
.ar-preview svg{max-height:280px;width:100%;height:auto}
.ar-pair{display:grid;gap:12px}
@media (min-width:700px){.ar-pair{grid-template-columns:1fr 1fr}}
.ar-card{border:1px solid var(--line);border-radius:var(--r2);padding:14px;background:var(--surface)}
.ar-card h3{margin:0 0 8px;font-size:.9rem}
@media (prefers-reduced-motion:reduce){.ar-preview svg rect{transition:none!important}}
.open-calc{display:inline-grid;place-items:center;width:44px;height:44px;color:var(--accent)}
.ratio-thumb{width:56px;height:36px;border:2px solid var(--accent);border-radius:6px;background:var(--accent-soft)}
[data-theme=dark] .ar-res{background:rgba(4,120,87,.18)}

/* ---------- circle crop tool ---------- */
.nav-l{gap:6px}
.cc-tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);margin:0 0 32px;position:relative}
.cc-grid{display:flex;flex-direction:column;align-items:center;gap:12px;padding:20px 16px 18px}
@media (min-width:900px){.cc-tool{margin-bottom:24px}.cc-tool:has(+ .tool-ai){margin-bottom:0}.cc-grid{padding:28px 24px 22px}}
.cc-stage,.cc-side{display:flex;flex-direction:column;align-items:stretch;width:min(100%,360px);margin:0;gap:14px}
.cc-frame{position:relative;width:min(100%,340px);aspect-ratio:1;align-self:center;margin:6px 0}
.cc-view{position:absolute;inset:0;box-sizing:border-box;border:4px solid var(--accent);border-radius:50%;overflow:hidden;touch-action:none;margin:0;background:var(--surface);box-shadow:0 12px 28px rgba(20,25,23,.08)}
.cc-tool.is-square .cc-view{border-radius:12px}
.cc-view canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.checker{background:conic-gradient(#e4e4e4 25%,#fff 0 50%,#e4e4e4 0 75%,#fff 0) 0 0/16px 16px}
[data-theme=dark] .checker,.cc-strip[data-plate=dark] .checker{background:conic-gradient(#2a312e 25%,#141918 0 50%,#2a312e 0 75%,#141918 0) 0 0/16px 16px}
.cc-empty{position:absolute;inset:0;z-index:5;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:36px 28px}
.cc-tool.has-image .cc-empty{display:none}
.cc-empty-t{font-weight:750;margin:0;font-size:1.12rem;letter-spacing:-.02em;color:var(--text)}
.cc-empty-row{display:flex;gap:8px;align-items:center;justify-content:center;margin-top:4px}
.cc-empty-btn{display:inline-flex;align-items:center;gap:10px;min-height:58px;padding:0 32px;border:0;border-radius:999px;background:var(--accent);color:var(--on-accent);font:700 1.08rem/1 var(--font);cursor:pointer;box-shadow:0 8px 18px rgba(13,148,136,.22)}
.cc-empty-btn .ico{width:22px;height:22px;color:var(--on-accent)}
@media (hover:hover){.cc-empty-btn:hover{background:var(--accent-press)}}
.cc-empty-bulk{cursor:pointer}
.cc-pile{display:flex;align-items:center;justify-content:center;margin:0 0 2px}
.cc-pile span{width:62px;height:62px;margin-left:-18px;border-radius:50%;border:3px solid var(--accent);box-shadow:0 0 0 3px var(--surface)}
.cc-pile span:first-child{margin-left:0}
.cc-pile span:nth-child(1){z-index:1}
.cc-pile span:nth-child(2){z-index:2}
.cc-pile span:nth-child(3){z-index:3}
.cc-pile span:nth-child(4){z-index:4}
.cc-zoomrow{display:flex;flex-direction:column;gap:2px;width:100%;margin:0}
.cc-slider{display:flex;flex-direction:column;gap:2px}
.cc-slider-h{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:28px}
.cc-slider-h>span,.cc-slider-meta{font-size:.84rem;font-weight:650;color:var(--muted)}
.cc-slider-h output{font:700 .84rem/1 var(--font);font-variant-numeric:tabular-nums;color:var(--text);min-width:2.4em;text-align:right}
.cc-zoomrow output{color:var(--accent-ink)}
.cc-slider-meta{display:inline-flex;align-items:center;gap:8px}
.cc-swatch{position:relative;width:26px;height:26px;border-radius:50%;overflow:hidden;flex:none;cursor:pointer;box-shadow:0 0 0 1px var(--line2),inset 0 0 0 2px var(--surface)}
.cc-swatch input[type=color]{position:absolute;inset:-10px;width:46px;height:46px;min-height:0;padding:0;border:0;background:transparent;cursor:pointer}
.cc-live{margin:0;color:var(--muted);font-size:.9rem;width:100%;text-align:center}
.cc-live:empty{display:none}
.cc-bulk{display:flex;flex-direction:column;gap:8px}
.cc-tabs{display:flex;flex-wrap:nowrap;gap:8px;overflow-x:auto;margin:2px 0 14px;padding:2px 0 4px;scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.page-head+.cc-tabs-wrap{margin-top:32px}
.cc-tabs::-webkit-scrollbar{display:none}
.cc-tabs-wrap{position:relative}
.cc-tabs-nav{display:none}
@media (max-width:899px){
.cc-tabs-wrap{margin-inline:calc(var(--pad) * -1)}
.cc-tabs{margin-inline:0;padding:2px var(--pad) 8px;scroll-snap-type:x proximity;scroll-padding-inline:var(--pad)}
.cc-tab{scroll-snap-align:start}
.cc-tabs{scroll-padding-inline:88px}
.cc-tabs-nav{position:absolute;z-index:2;top:0;bottom:0;display:flex;align-items:center;width:92px;height:auto;margin:0;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;color:var(--text);cursor:pointer}
.cc-tabs-nav::before{content:"";position:absolute;inset:0;pointer-events:none;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.cc-tabs-prev{left:0;justify-content:flex-start;padding-left:6px}
.cc-tabs-prev::before{background:linear-gradient(90deg,var(--bg) 0%,var(--bg) 22%,color-mix(in srgb,var(--bg) 55%,transparent) 62%,transparent 100%);-webkit-mask-image:linear-gradient(90deg,#000 0%,#000 40%,transparent 100%);mask-image:linear-gradient(90deg,#000 0%,#000 40%,transparent 100%)}
.cc-tabs-next{right:0;justify-content:flex-end;padding-right:6px}
.cc-tabs-next::before{background:linear-gradient(270deg,var(--bg) 0%,var(--bg) 22%,color-mix(in srgb,var(--bg) 55%,transparent) 62%,transparent 100%);-webkit-mask-image:linear-gradient(270deg,#000 0%,#000 40%,transparent 100%);mask-image:linear-gradient(270deg,#000 0%,#000 40%,transparent 100%)}
.cc-tabs-nav[hidden]{display:none}
.cc-tabs-nav .ico{position:relative;z-index:1;width:24px;height:24px}
.cc-tabs-nav:active{opacity:.72}
.cc-tabs-nav:focus-visible{outline:none}
.cc-tabs-nav:focus-visible .ico{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
}
.cc-tabs.cc-tabs-more-r{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 44px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 44px),transparent)}
.cc-tabs.cc-tabs-more-l{-webkit-mask-image:linear-gradient(90deg,transparent,#000 44px);mask-image:linear-gradient(90deg,transparent,#000 44px)}
.cc-tabs.cc-tabs-more-l.cc-tabs-more-r{-webkit-mask-image:linear-gradient(90deg,transparent,#000 44px,#000 calc(100% - 44px),transparent);mask-image:linear-gradient(90deg,transparent,#000 44px,#000 calc(100% - 44px),transparent)}
@media (max-width:899px){
.cc-tabs.cc-tabs-more-r{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 36px),transparent 100%);mask-image:linear-gradient(90deg,#000 calc(100% - 36px),transparent 100%)}
.cc-tabs.cc-tabs-more-l{-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 36px);mask-image:linear-gradient(90deg,transparent 0%,#000 36px)}
.cc-tabs.cc-tabs-more-l.cc-tabs-more-r{-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 36px,#000 calc(100% - 36px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0%,#000 36px,#000 calc(100% - 36px),transparent 100%)}
}
.cc-tab{flex:none;display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px 0 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--nav);font:600 .875rem/1 var(--font);text-decoration:none;white-space:nowrap}
.cc-tab .ico{width:16px;height:16px;color:var(--faint)}
.cc-tab[aria-current=page]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.cc-tab[aria-current=page] .ico{color:var(--on-accent)}
@media (hover:hover){.cc-tab:not([aria-current=page]):hover{background:var(--peach);border-color:var(--accent);color:var(--accent-ink)}}
.cc-choices{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%}
.cc-choice{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:3px;min-height:64px;padding:10px 14px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--text);cursor:pointer;text-align:left;font:700 .98rem/1.2 var(--font)}
.cc-choice small{font:550 .78rem/1.3 var(--font);color:var(--muted)}
.cc-choice[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.cc-choice[aria-pressed=true] small{color:rgba(255,255,255,.88)}
.cc-acts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%}
.cc-act{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:48px;padding:0 10px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--text);font:650 .9rem/1 var(--font);letter-spacing:-.01em;cursor:pointer;box-shadow:0 1px 2px rgba(16,20,28,.04);transition:background .15s,border-color .15s,transform .12s}
.cc-act .ico{width:18px;height:18px;flex:none;color:var(--accent)}
@media (hover:hover){.cc-act:hover{background:var(--peach);border-color:var(--peach-ln)}}
.cc-act:active{transform:translateY(1px)}
.cc-act[aria-pressed=true]{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}
.cc-chips{display:flex;flex-wrap:nowrap;gap:8px;width:100%}
.cc-chips>*{flex:1 1 0;display:inline-flex;align-items:center;justify-content:center;min-width:0}
.cc-formats{display:flex;align-items:center;gap:8px;width:100%}
.cc-formats .cc-seg{flex:1;display:flex;padding:4px;gap:2px;background:var(--tint);border:1px solid var(--line);border-radius:999px}
.cc-formats .cc-seg button{flex:1;min-height:38px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:650 .88rem/1 var(--font);cursor:pointer;transition:background .15s,color .15s,box-shadow .15s}
.cc-formats .cc-seg button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);box-shadow:0 1px 2px rgba(13,148,136,.28)}
@media (hover:hover){.cc-formats .cc-seg button:not([aria-pressed=true]):hover{color:var(--text)}}
.cc-sq{position:relative;display:inline-flex;align-items:center;justify-content:center;flex:none;min-height:46px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--text);font:650 .9rem/1 var(--font);cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.cc-sq input{position:absolute;opacity:0;width:1px;height:1px}
.cc-sq:has(input:checked){background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.cc-line{display:flex;align-items:center;gap:8px;min-height:44px;font-weight:650}
.cc-line span{width:72px;flex:none;color:var(--muted);font-size:.86rem}
.cc-line input[type=range]{flex:1;min-width:0}
.cc-extra{display:flex;flex-direction:column;gap:12px;width:100%;padding:12px 14px 14px;border:1px solid var(--line);border-radius:18px;background:var(--tint)}
.cc-actions{display:block;width:100%}
.cc-strip-row{display:flex;align-items:center;justify-content:space-between;width:100%}
.cc-bg{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-items:center;width:100%}
.cc-tool .ib,.cc-tool button.ib{min-width:44px;min-height:44px;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);display:inline-grid;place-items:center;padding:0;cursor:pointer}
.cc-tool .ib:has(.cc-word){width:auto;padding:0 12px;display:inline-flex;gap:6px}
.cc-tool .ib[aria-pressed=true]{background:var(--accent-soft);color:var(--accent);border-color:var(--peach-ln)}
.cc-tool input:not([type=range]):not([type=color]),.cc-tool select{font-size:16px;min-height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text);padding:0 10px}
.cc-tool input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:28px;min-height:28px;margin:0;padding:0;border:0;border-radius:0;background:transparent;cursor:pointer;accent-color:var(--accent)}
.cc-tool input[type=range]:focus{outline:none}
.cc-tool input[type=range]:focus-visible{outline:3px solid var(--accent-ic);outline-offset:2px;border-radius:8px}
.cc-tool input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:linear-gradient(to right,var(--accent) var(--p,0%),var(--line) var(--p,0%))}
.cc-tool input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;margin-top:-8px;border-radius:50%;background:#fff;border:2px solid var(--accent);box-shadow:0 1px 2px rgba(16,20,28,.16),0 0 0 4px color-mix(in srgb,var(--accent) 12%,transparent)}
.cc-tool input[type=range]::-moz-range-track{height:4px;border:0;border-radius:999px;background:var(--line)}
.cc-tool input[type=range]::-moz-range-progress{height:4px;border:0;border-radius:999px;background:var(--accent)}
.cc-tool input[type=range]::-moz-range-thumb{width:20px;height:20px;border:2px solid var(--accent);border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(16,20,28,.16)}
.cc-tool input[type=color]{width:44px;height:44px;padding:4px}
.cc-panel{border:1px solid var(--line);border-radius:12px;margin:8px 0;background:var(--surface)}
.cc-panel summary{min-height:44px;display:flex;align-items:center;gap:8px;padding:0 12px;cursor:pointer;font-weight:600;color:var(--text)}
.cc-panel summary::after{content:"";margin-left:auto;width:16px;height:16px;flex:none;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238a938e' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") center/14px no-repeat;transition:transform .2s}
.cc-panel[open] summary::after{transform:rotate(180deg)}
.cc-panel[open]{background:var(--tint)}
.cc-panel-in{padding:8px 12px 12px;display:flex;gap:8px;align-items:center}
.cc-panel-in.cc-bg{display:grid;grid-template-columns:1fr 1fr}
.cc-panel-in.cc-acts{display:grid;padding-top:0}
.cc-panel-in.cc-bg input[type=color]{justify-self:start}
.cc-panel-in input[type=range]{flex:1}
.cc-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:8px;align-items:center;margin:8px 0;width:100%}
.cc-size,.cc-size select{width:100%;min-width:0}
.cc-panel,.cc-strip,.cc-oval,.cc-check,.cc-bulk{width:100%}
.cc-bg button{width:100%}
.cc-actions .btn-dl{width:100%;justify-content:center}
.cc-chips button,.cc-bg button{min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--text);cursor:pointer;font:600 .9rem/1 var(--font)}
.cc-chips button[aria-pressed=true],.cc-bg button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.cc-check{display:flex;align-items:center;gap:8px;min-height:44px}
.cc-tool:not(.has-image) .cc-strip{display:none}
.cc-strip{margin:10px 0;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--tint)}
.cc-strip-emph{box-shadow:inset 0 0 0 2px var(--peach-ln)}
.cc-strip-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-weight:650}
.cc-strip-row{justify-content:space-between}
.cc-strip-row canvas{border-radius:50%;background:conic-gradient(#e4e4e4 25%,#fff 0 50%,#e4e4e4 0 75%,#fff 0) 0 0/8px 8px;box-shadow:0 0 0 2px var(--surface),0 0 0 3px var(--line)}
.cc-actions{margin:0}
.btn-dl{min-height:52px;padding:0 18px;border:0;border-radius:16px;background:var(--accent);color:var(--on-accent);font:700 1.02rem/1 var(--font);letter-spacing:-.01em;display:inline-flex;align-items:center;gap:8px;cursor:pointer;box-shadow:0 8px 18px rgba(13,148,136,.2)}
.btn-dl:hover{background:var(--accent-press)}
.btn-dl .ico{color:currentColor}
.cc-bar{display:none}
.cc-thumbs{display:flex;gap:8px;overflow:auto;padding-bottom:6px}
.cc-thumb{width:48px;height:48px;min-width:44px;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:0;background:var(--surface);cursor:pointer}
.cc-thumb.on{outline:2px solid var(--accent)}
.cc-tool.is-drop{outline:2px dashed var(--accent);outline-offset:2px}
.cc-tool .ccu{display:none}
@media (max-width:899px){
  .cc-actions .btn-dl{display:none}
  .cc-bar{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(--surface);border-top:1px solid var(--line);justify-content:stretch}
  .cc-bar .btn-dl{flex:1;justify-content:center}
  html.cc-bar-on body{padding-bottom:76px}
}
html.cc-bar-on .fab{display:none!important}
.cc-tool:not(.has-image) .cc-zoomrow,
.cc-tool:not(.has-image) .cc-acts,
.cc-tool:not(.has-image) .cc-side,
.cc-tool:not(.has-image) .cc-live,
.cc-tool:not(.has-image) .cc-bar{display:none}
.cc-tool+.ccu,.cc-tool+*+.ccu{margin-top:32px}
@media (min-width:900px){.cc-tool+.ccu,.cc-tool+*+.ccu{margin-top:24px}}
@media print{.cc-bar,.cc-tool .ib{display:none!important}}
.mock{margin:0 0 16px}.mock svg{width:100%;height:auto;max-width:420px}
.page-head{padding:20px 0 6px}
main>.wrap:first-child:has(.crumbs){padding-top:8px}
.page-head:has(.crumbs){padding-top:0}
.page-head .note-box.qa{background:transparent;border:0;padding:0;margin:.1rem 0 0;border-radius:0;max-width:62ch;color:var(--muted);font-size:1.0625rem;line-height:1.55}
/* header controls stay compact; the 44px floor is for the editor and the menu sheet */
.site-head .ib,.site-head .find{min-width:36px;min-height:36px}
@media (max-width:959px){
  .site-head .head-act .find,.site-head .head-act .nav-tgl{width:40px;height:44px;min-width:40px;min-height:44px}
  .site-head .head-act .find .ico,.site-head .head-act .nav-tgl .ico{width:26px;height:26px}
  .site-head .head-act .nav-tgl{justify-items:end;margin-right:calc(26px * -4 / 24)}
}
@media (max-width:699px){.cc-tab{height:40px}}
.kpi{background:var(--surface);border-color:var(--line);box-shadow:inset 3px 0 0 var(--accent)}
.cc-tool{box-shadow:0 1px 2px rgba(20,25,23,.04),0 12px 32px rgba(20,25,23,.06)}
[data-theme=dark] .cc-strip-row canvas{background:conic-gradient(#2a312e 25%,#141918 0 50%,#2a312e 0 75%,#141918 0) 0 0/8px 8px}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .checker{background:conic-gradient(#2a312e 25%,#141918 0 50%,#2a312e 0 75%,#141918 0) 0 0/16px 16px}:root:not([data-theme=light]) .cc-strip-row canvas{background:conic-gradient(#2a312e 25%,#141918 0 50%,#2a312e 0 75%,#141918 0) 0 0/8px 8px}}