/* HowWise — multilingual how-to guides */
:root{
  --bg:#f6f7fb; --surface:#ffffff; --surface-2:#eef0f7; --ink:#161a2b; --muted:#5a6078; --line:#dfe2ee;
  --brand:#2b4acb; --brand-ink:#1c3396; --brand-soft:#e6eafb;
  --tech:#2b6fd6; --tech-soft:#e2edfb; --money:#1f7a4d; --money-soft:#e0f2e8; --cooking:#c0561b; --cooking-soft:#fbe9df; --life:#7a3fc1; --life-soft:#efe6fa;
  --warn-soft:#fff6e0; --warn-line:#efd8a0;
  --radius:16px; --shadow:0 1px 2px rgba(23,32,28,.05),0 8px 24px -12px rgba(23,32,28,.14);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Helvetica Neue",Arial,"Noto Sans Devanagari","Noto Sans Bengali","Noto Sans Arabic","Noto Nastaliq Urdu","Noto Sans JP","Noto Sans SC","Noto Sans KR",sans-serif;
  --font-head:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,var(--font);
  --measure:70ch;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0f1220; --surface:#161a2b; --surface-2:#1d2236; --ink:#e7e9f3; --muted:#9ba1bb; --line:#2a3048;
    --brand:#7f98ff; --brand-ink:#b3c2ff; --brand-soft:#1d2550;
    --tech:#7fb2ff; --tech-soft:#172742; --money:#5fd39a; --money-soft:#14301f; --cooking:#f39a62; --cooking-soft:#35221a; --life:#c39bff; --life-soft:#2a1f40;
    --warn-soft:#2a2414; --warn-line:#4d4120; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0f1220; --surface:#161a2b; --surface-2:#1d2236; --ink:#e7e9f3; --muted:#9ba1bb; --line:#2a3048;
  --brand:#7f98ff; --brand-ink:#b3c2ff; --brand-soft:#1d2550;
  --tech:#7fb2ff; --tech-soft:#172742; --money:#5fd39a; --money-soft:#14301f; --cooking:#f39a62; --cooking-soft:#35221a; --life:#c39bff; --life-soft:#2a1f40;
  --warn-soft:#2a2414; --warn-line:#4d4120;
}
/* Serif display only for Latin-script languages; others use the native system font */
html:not([lang="en"]):not([lang="es"]):not([lang="pt"]):not([lang="fr"]):not([lang="de"]):not([lang="it"]):not([lang="id"]):not([lang="tr"]){--font-head:var(--font)}
html[lang="ur"]{--font:"Noto Nastaliq Urdu","Jameel Noori Nastaleeq",var(--font)}
html[lang="ur"] body{line-height:2}
html[lang="ko"] :is(h1,h2,h3,p,li){word-break:keep-all}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 var(--font);text-rendering:optimizeLegibility}
img,svg{max-width:100%}
a{color:var(--brand);text-underline-offset:3px}
a:hover{color:var(--brand-ink)}
.wrap{width:100%;max-width:1180px;margin-inline:auto;padding-inline:16px}
@media(min-width:720px){.wrap{padding-inline:28px}}
.skip{position:absolute;inset-inline-start:-999px;top:8px;background:var(--brand);color:#fff;padding:8px 12px;border-radius:8px;z-index:50}
.skip:focus{inset-inline-start:8px}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo-mark{width:30px;height:30px;flex:none}
.main-nav{display:flex;gap:4px;margin-inline-start:auto;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{color:var(--muted);text-decoration:none;font-weight:550;font-size:.95rem;padding:8px 12px;border-radius:999px;white-space:nowrap}
.main-nav a:hover{background:var(--surface-2);color:var(--ink)}
@media(max-width:640px){.header-inner{flex-wrap:wrap;gap:6px 12px;padding-block:8px}.main-nav{order:3;width:100%;margin:0}.main-nav a{padding:6px 10px}.lang-menu{margin-inline-start:auto}}

/* Language menu */
.lang-menu{position:relative}
.lang-menu summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:.9rem;font-weight:550;color:var(--ink)}
.lang-menu summary::-webkit-details-marker{display:none}
.lang-menu summary svg{width:18px;height:18px;fill:var(--muted)}
.lang-menu ul{position:absolute;inset-inline-end:0;top:calc(100% + 8px);margin:0;padding:6px;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(2,minmax(130px,1fr));gap:2px;min-width:290px;max-height:70vh;overflow:auto}
.lang-menu li a{display:block;padding:8px 12px;border-radius:9px;color:var(--ink);text-decoration:none;font-size:.95rem}
.lang-menu li a:hover{background:var(--surface-2)}
.lang-menu li a[aria-current]{background:var(--brand-soft);color:var(--brand-ink);font-weight:650}

/* Hero */
.hero{padding:56px 0 28px}
.hero h1{font-family:var(--font-head);font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.12;letter-spacing:-.02em;margin:.2em 0 .35em;max-width:20ch;text-wrap:balance}
.hero-intro{font-size:clamp(1.05rem,1.6vw,1.2rem);color:var(--muted);max-width:60ch;margin:0}
.eyebrow{display:inline-block;font-size:.85rem;font-weight:650;letter-spacing:.04em;color:var(--brand);background:var(--brand-soft);padding:5px 12px;border-radius:999px;margin:0}
.hero-small{padding:40px 0 8px}
.hero-small h1{margin-top:.3em}

/* Category cards */
.cats{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-block:20px 8px}
.cat-card{display:flex;flex-direction:column;gap:6px;padding:22px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.cat-card h3{margin:6px 0 0;font-size:1.25rem}
.cat-card p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.55}
.cat-card .count{margin-top:auto;padding-top:8px;font-size:.85rem;font-weight:600}
.cat-icon{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px}
.cat-icon svg{width:24px;height:24px}
.cat-icon.big{width:56px;height:56px;border-radius:16px}
.cat-icon.big svg{width:30px;height:30px}
.cat-tech .cat-icon{background:var(--tech-soft)} .cat-tech .cat-icon svg,.cat-tech .count{fill:var(--tech);color:var(--tech)}
.cat-money .cat-icon{background:var(--money-soft)} .cat-money .cat-icon svg,.cat-money .count{fill:var(--money);color:var(--money)}
.cat-cooking .cat-icon{background:var(--cooking-soft)} .cat-cooking .cat-icon svg,.cat-cooking .count{fill:var(--cooking);color:var(--cooking)}
.cat-life .cat-icon{background:var(--life-soft)} .cat-life .cat-icon svg,.cat-life .count{fill:var(--life);color:var(--life)}

/* Article grid */
.all{padding-block:28px 56px}
.all h2,.related h2{font-family:var(--font-head);font-size:1.6rem;margin:0 0 16px;letter-spacing:-.01em}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.card{display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s,border-color .15s}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:transparent;color:var(--ink)}
.card h3{margin:2px 0 0;font-size:1.12rem;line-height:1.35;text-wrap:pretty}
.card p{margin:0;color:var(--muted);font-size:.93rem;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:6px;font-size:.85rem;color:var(--muted);display:flex;justify-content:space-between}
.card .arrow{color:var(--brand);font-weight:700;transition:transform .15s}
.card:hover .arrow{transform:translateX(3px)}
[dir="rtl"] .card .arrow{transform:scaleX(-1)}
.chip{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:650;padding:4px 10px 4px 8px;border-radius:999px}
.chip svg{width:14px;height:14px}
.chip-tech{background:var(--tech-soft);color:var(--tech);fill:var(--tech)}
.chip-money{background:var(--money-soft);color:var(--money);fill:var(--money)}
.chip-cooking{background:var(--cooking-soft);color:var(--cooking);fill:var(--cooking)}
.chip-life{background:var(--life-soft);color:var(--life);fill:var(--life)}

/* Article */
.progress{position:fixed;top:0;inset-inline:0;height:3px;z-index:30}
.progress span{display:block;height:100%;width:0;background:var(--brand)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:0 48px;padding-block:28px 24px}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,var(--measure)) 260px;justify-content:center}.article-head{grid-column:1/-1}.toc{grid-column:2;grid-row:2}.prose{grid-column:1;grid-row:2}}
.article-head{max-width:860px;margin-bottom:24px}
.article-head h1{font-family:var(--font-head);font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.15;letter-spacing:-.02em;margin:14px 0 12px;text-wrap:balance}
.lede{font-size:1.15rem;color:var(--muted);margin:0 0 14px}
.meta{display:flex;flex-wrap:wrap;gap:6px 10px;font-size:.9rem;color:var(--muted);margin:0}
.meta a{color:var(--muted)}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:.88rem;color:var(--muted);margin-bottom:12px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.toc{margin-bottom:20px}
.toc details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.toc summary{cursor:pointer;font-weight:700;font-size:.92rem}
.toc ol{margin:10px 0 0;padding-inline-start:20px;font-size:.9rem;line-height:1.5}
.toc li{margin:6px 0}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover,.toc a.active{color:var(--brand)}
@media(min-width:1024px){.toc{position:sticky;top:88px;align-self:start;max-height:calc(100vh - 110px);overflow:auto}}

.prose{max-width:var(--measure);min-width:0}
.prose>*:first-child{margin-top:0}
.prose p,.prose li{text-wrap:pretty}
.prose h2{font-family:var(--font-head);font-size:1.6rem;line-height:1.25;letter-spacing:-.01em;margin:2.1em 0 .6em}
.prose h3{font-size:1.18rem;line-height:1.35;margin:1.7em 0 .4em}
.prose ul,.prose ol{padding-inline-start:1.4em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--brand)}
.prose strong{font-weight:700}
.prose blockquote{margin:1.4em 0;padding:4px 18px;border-inline-start:4px solid var(--brand);color:var(--muted)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}
.table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.prose table{width:100%;border-collapse:collapse;font-size:.94rem;line-height:1.5}
.prose th,.prose td{padding:10px 14px;text-align:start;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--surface-2);font-weight:700}
.prose tr:last-child td{border-bottom:0}
.notice{display:flex;gap:12px;padding:14px 16px;margin-bottom:28px;background:var(--warn-soft);border:1px solid var(--warn-line);border-radius:12px;font-size:.9rem;line-height:1.55}
.notice svg{width:20px;height:20px;flex:none;fill:#b08316;margin-top:2px}
.notice p{margin:0}
.sources-rule{margin-top:3em}
.sources-rule+h2+ul{font-size:.92rem;color:var(--muted)}
.related{padding-block:24px 64px;border-top:1px solid var(--line);margin-top:24px}

/* BMI tool */
.tool{margin:1.8em 0;padding:22px;border-radius:var(--radius);background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 25%,transparent)}
.prose .tool-title{margin:0 0 14px;font-size:1.3rem}
.bmi-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;align-items:end}
.bmi-form label{display:grid;gap:6px;font-size:.88rem;font-weight:600}
.bmi-form input{font:inherit;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);width:100%}
.bmi-form button,.btn{font:inherit;font-weight:650;padding:11px 18px;border-radius:10px;border:0;background:var(--brand);color:#fff;cursor:pointer;text-decoration:none;display:inline-block}
.bmi-form button:hover,.btn:hover{background:var(--brand-ink);color:#fff}
.bmi-result{margin-top:16px;font-size:1.05rem}
.bmi-result strong{font-size:1.6rem}
.bmi-scale{position:relative;display:grid;grid-template-columns:3.5fr 6.5fr 5fr 10fr;height:10px;border-radius:99px;overflow:visible;margin-top:14px}
.bmi-scale span:first-child{border-radius:99px 0 0 99px}.bmi-scale span:nth-child(4){border-radius:0 99px 99px 0}
.s-under{background:#8bb4d9}.s-normal{background:#5fb37e}.s-over{background:#e7b54a}.s-obese{background:#d8644a}
.bmi-marker{position:absolute;top:-5px;width:4px;height:20px;border-radius:2px;background:var(--ink);display:none;transform:translateX(-50%)}
[dir="rtl"] .bmi-scale{direction:ltr}

/* Static page & root */
.page{padding-block:40px 64px;max-width:820px}
.page h1{font-family:var(--font-head);font-size:clamp(1.9rem,4vw,2.6rem);letter-spacing:-.02em}
.root-picker{padding-block:64px;max-width:980px}
.root-picker h1{font-family:var(--font-head);font-size:clamp(2rem,5vw,3rem);margin:28px 0 8px}
.logo.big{font-size:1.5rem}.logo.big .logo-mark{width:40px;height:40px}
.lang-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin-top:32px}
.lang-grid a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:14px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:box-shadow .15s,transform .15s}
.lang-grid a:hover{box-shadow:var(--shadow);transform:translateY(-2px);color:var(--ink)}
.lang-grid a.suggested{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.lang-grid strong{font-size:1.1rem}
.lang-grid span{font-size:.85rem;color:var(--muted);line-height:1.45}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:var(--surface);padding-block:36px 28px;font-size:.92rem;color:var(--muted)}
.site-footer .wrap{display:grid;gap:14px}
.foot-brand p{margin:6px 0 0}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 20px}
.foot-links a{color:var(--ink);text-decoration:none}
.foot-links a:hover{color:var(--brand)}
.foot-note{font-size:.85rem;max-width:80ch;margin:0}
.foot-copy{margin:0;font-size:.85rem}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.toc,.related,.progress,.tool{display:none}body{background:#fff;color:#000}}