/* ==========================================================================
   Fori.us — design system v2 ("friendly app")
   Plus Jakarta Sans, self-hosted. Soft gradients, rounded surfaces.
   Mobile-first. Light + dark. No framework.
   ========================================================================== */

@font-face{
  font-family:"Jakarta";
  src:url("/assets/fonts/plus-jakarta-sans-latin-wght-normal.woff2") format("woff2-variations");
  font-weight:200 800;font-style:normal;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:"Jakarta";
  src:url("/assets/fonts/plus-jakarta-sans-latin-ext-wght-normal.woff2") format("woff2-variations");
  font-weight:200 800;font-style:normal;font-display:swap;
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* ---------------------------------------------------------------- tokens */
:root{
  --bg:#FFFFFF;
  --soft:#F6F5FC;
  --soft-2:#EFEDF9;
  --card:#FFFFFF;
  --text:#191627;
  --text-2:#3B3752;
  --muted:#6A6685;
  --line:#EAE8F5;
  --line-2:#F2F0FA;

  --indigo:#5B54E8;
  --indigo-ink:#4B44D6;
  --indigo-soft:#EDEBFF;
  --peach:#FF8A5B;
  --peach-ink:#C3542A;
  --peach-soft:#FFF0E9;
  --mint:#0F9E7A;
  --mint-soft:#E4F7F1;
  --sky:#2E92DE;
  --sky-soft:#E5F1FC;
  --pink:#DB4C85;
  --pink-soft:#FFE9F1;
  --amber:#B07C00;
  --amber-soft:#FFF5DC;

  /* validated ordinal data ramp (single hue, light -> dark) */
  --v1:#B2ADF4;--v2:#918AEE;--v3:#6C64E9;--v4:#4C44CE;--v5:#37309E;

  --sh-1:0 1px 2px rgba(25,22,39,.05);
  --sh-2:0 2px 6px rgba(25,22,39,.05),0 14px 30px -18px rgba(25,22,39,.28);
  --sh-3:0 4px 10px rgba(25,22,39,.06),0 28px 56px -28px rgba(25,22,39,.4);
  --sh-brand:0 10px 24px -12px rgba(91,84,232,.85);

  --r-sm:12px;--r:16px;--r-lg:22px;--r-xl:28px;
  --maxw:1180px;
  --font:"Jakarta",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0F0E17;--soft:#16151F;--soft-2:#1D1B29;--card:#1A1927;
    --text:#F3F2F9;--text-2:#D7D4E6;--muted:#A29FBC;--line:#2A2840;--line-2:#232135;
    --indigo:#8B84FF;--indigo-ink:#A9A3FF;--indigo-soft:#221F3D;
    --peach:#FF9E75;--peach-ink:#FFB292;--peach-soft:#2C1D16;
    --mint:#4FD1A5;--mint-soft:#122A23;--sky:#69B6EE;--sky-soft:#12212E;
    --pink:#F286AF;--pink-soft:#2C1721;--amber:#E0AE4C;--amber-soft:#2A2214;
    --v1:#DEDCFB;--v2:#BDB8F8;--v3:#9A93F3;--v4:#7A72E6;--v5:#5F57C4;
    --sh-1:0 1px 2px rgba(0,0,0,.5);
    --sh-2:0 2px 6px rgba(0,0,0,.45),0 14px 30px -18px rgba(0,0,0,.8);
    --sh-3:0 4px 10px rgba(0,0,0,.5),0 28px 56px -28px rgba(0,0,0,.9);
    --sh-brand:0 10px 24px -12px rgba(139,132,255,.55);
  }
}
:root[data-theme="dark"]{
  --bg:#0F0E17;--soft:#16151F;--soft-2:#1D1B29;--card:#1A1927;
  --text:#F3F2F9;--text-2:#D7D4E6;--muted:#A29FBC;--line:#2A2840;--line-2:#232135;
  --indigo:#8B84FF;--indigo-ink:#A9A3FF;--indigo-soft:#221F3D;
  --peach:#FF9E75;--peach-ink:#FFB292;--peach-soft:#2C1D16;
  --mint:#4FD1A5;--mint-soft:#122A23;--sky:#69B6EE;--sky-soft:#12212E;
  --pink:#F286AF;--pink-soft:#2C1721;--amber:#E0AE4C;--amber-soft:#2A2214;
  --v1:#DEDCFB;--v2:#BDB8F8;--v3:#9A93F3;--v4:#7A72E6;--v5:#5F57C4;
  --sh-1:0 1px 2px rgba(0,0,0,.5);
  --sh-2:0 2px 6px rgba(0,0,0,.45),0 14px 30px -18px rgba(0,0,0,.8);
  --sh-3:0 4px 10px rgba(0,0,0,.5),0 28px 56px -28px rgba(0,0,0,.9);
  --sh-brand:0 10px 24px -12px rgba(139,132,255,.55);
}

/* ---------------------------------------------------------------- base */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:92px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:1.0625rem;line-height:1.68;
  font-weight:450;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--indigo-ink);text-underline-offset:.2em;text-decoration-thickness:.08em;font-weight:600}
a:hover{color:var(--indigo)}
:focus-visible{outline:3px solid var(--indigo);outline-offset:3px;border-radius:6px}

h1,h2,h3,h4{color:var(--text);margin:0 0 .5em;line-height:1.14;letter-spacing:-.032em;font-weight:800}
h1{font-size:clamp(2.15rem,1.5rem + 2.7vw,3.4rem);letter-spacing:-.04em}
h2{font-size:clamp(1.6rem,1.3rem + 1.3vw,2.2rem);margin-top:2.1em}
h3{font-size:clamp(1.18rem,1.08rem + .5vw,1.38rem);margin-top:1.85em;font-weight:750}
h4{font-size:1.03rem;margin-top:1.6em;font-weight:750}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.3em;padding-left:1.35em}
li{margin-bottom:.5em}
li::marker{color:var(--indigo)}
strong{font-weight:700;color:var(--text)}
blockquote{margin:1.8em 0;padding:1.1em 1.4em;border-radius:var(--r);background:var(--indigo-soft);color:var(--text-2);font-size:1.05rem}
hr{border:0;border-top:1px solid var(--line);margin:2.6em 0}
code{font-family:var(--mono);font-size:.88em;background:var(--soft);padding:.16em .45em;border-radius:7px}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}
@media (min-width:768px){.wrap{padding-inline:28px}}
.skip{position:absolute;left:-9999px;top:0;background:var(--indigo);color:#fff;padding:.8em 1.2em;z-index:200;border-radius:0 0 12px 0;font-weight:700}
.skip:focus{left:0;color:#fff}

/* ---------------------------------------------------------------- header */
.site-header{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(14px) saturate(1.5);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:14px;height:70px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text);font-size:1.28rem;font-weight:800;letter-spacing:-.035em;flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:12px;box-shadow:var(--sh-brand)}
.brand small{display:block;font-size:.58rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);line-height:1;margin-top:3px}
.nav{margin-left:12px;display:none}
.nav ul{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.nav li{margin:0}
.nav a{display:block;padding:.55em .85em;border-radius:12px;color:var(--muted);text-decoration:none;font-size:.94rem;font-weight:650}
.nav a:hover,.nav a[aria-current="true"]{background:var(--indigo-soft);color:var(--indigo-ink)}
@media (min-width:960px){.nav{display:block}}
.header-actions{margin-left:auto;display:flex;gap:9px;align-items:center}
.search-btn{display:inline-flex;align-items:center;gap:9px;background:var(--soft);border:1px solid transparent;color:var(--muted);padding:.62em .9em;border-radius:13px;font:inherit;font-size:.9rem;font-weight:600;cursor:pointer;min-height:42px}
.search-btn:hover{border-color:var(--line);color:var(--indigo-ink)}
.search-btn svg{width:15px;height:15px}
.search-btn span{display:none}
.search-btn kbd{display:none;font-family:var(--font);font-size:.72rem;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:.1em .45em;color:var(--muted);font-weight:700}
@media (min-width:560px){.search-btn span{display:inline}}
@media (min-width:1100px){.search-btn kbd{display:inline-block}}
.header-cta{display:none;background:var(--indigo);color:#fff;padding:.7em 1.15em;border-radius:13px;font-weight:700;font-size:.9rem;text-decoration:none;box-shadow:var(--sh-brand);min-height:42px;align-items:center}
.header-cta:hover{color:#fff;filter:brightness(1.06)}
@media (min-width:700px){.header-cta{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;gap:7px;background:var(--soft);border:1px solid transparent;color:var(--text);padding:.62em .9em;border-radius:13px;font:inherit;font-size:.9rem;font-weight:700;cursor:pointer;min-height:42px}
.nav-toggle svg{width:16px;height:16px}
@media (min-width:960px){.nav-toggle{display:none}}
.mobile-nav{display:none;border-top:1px solid var(--line);background:var(--bg)}
.mobile-nav.open{display:block}
.mobile-nav ul{list-style:none;margin:0;padding:10px 0 14px}
.mobile-nav li{margin:0}
.mobile-nav a{display:block;padding:.85em 20px;color:var(--text);text-decoration:none;font-weight:650;min-height:46px}
.mobile-nav a:hover{background:var(--soft);color:var(--indigo-ink)}
@media (min-width:960px){.mobile-nav{display:none!important}}
.progress{position:absolute;left:0;bottom:-1px;height:3px;width:0;background:linear-gradient(90deg,var(--indigo),var(--peach));z-index:3;transition:width .08s linear;border-radius:0 3px 3px 0}

/* ---------------------------------------------------------------- layout */
.section{padding:60px 0}
@media (min-width:768px){.section{padding:84px 0}}
.section-alt{background:var(--soft)}
.eyebrow{font-size:.74rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:var(--indigo);margin:0 0 .9em}
.lede{font-size:clamp(1.06rem,1rem + .4vw,1.24rem);color:var(--muted);line-height:1.62;font-weight:500}
.center{text-align:center}
.mx-narrow{max-width:700px;margin-inline:auto}

/* ---------------------------------------------------------------- hero */
.hero{position:relative;padding:52px 0 60px;background:
  radial-gradient(58% 58% at 10% 4%,color-mix(in srgb,var(--indigo) 12%,transparent),transparent 62%),
  radial-gradient(48% 52% at 94% 16%,color-mix(in srgb,var(--peach) 15%,transparent),transparent 64%),
  radial-gradient(46% 50% at 72% 96%,color-mix(in srgb,var(--mint) 12%,transparent),transparent 66%);}
@media (min-width:768px){.hero{padding:74px 0 84px}}
.hero-grid{display:grid;gap:38px;align-items:center}
@media (min-width:960px){.hero-grid{grid-template-columns:1.04fr .96fr;gap:52px}}
.hero h1{margin-bottom:.32em}
.hero h1 .grad{background:linear-gradient(100deg,var(--indigo),var(--peach));-webkit-background-clip:text;background-clip:text;color:transparent}
.chip{display:inline-flex;align-items:center;gap:9px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:.42em .95em .42em .42em;font-size:.85rem;font-weight:650;color:var(--muted);box-shadow:var(--sh-1);margin-bottom:22px;text-decoration:none}
.chip:hover{color:var(--text)}
.chip b{background:var(--indigo-soft);color:var(--indigo-ink);border-radius:999px;padding:.25em .7em;font-size:.72rem;font-weight:800}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.trust-row span{display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:.55em .9em;font-size:.85rem;font-weight:650;color:var(--muted)}
.trust-row svg{width:16px;height:16px;color:var(--mint);flex:0 0 16px}

/* hero checklist panel */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);padding:20px;box-shadow:var(--sh-3)}
@media (min-width:768px){.panel{padding:24px}}
.panel-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.panel-head b{font-size:.95rem;font-weight:800}
.panel-head span{margin-left:auto;font-size:.76rem;color:var(--muted);background:var(--soft);border-radius:9px;padding:.28em .7em;font-weight:700}
.prow{display:flex;align-items:flex-start;gap:13px;padding:13px;border-radius:var(--r);margin-bottom:9px;background:var(--soft);text-decoration:none;color:var(--text)}
.prow:hover{background:var(--soft-2);color:var(--text)}
.prow.done{background:var(--mint-soft)}
.prow .d{width:27px;height:27px;border-radius:10px;display:grid;place-items:center;flex:0 0 27px;font-size:.78rem;font-weight:800;color:#fff;margin-top:1px}
.prow.done .d{background:var(--mint)}
.prow .d.c1{background:var(--indigo)}.prow .d.c2{background:var(--peach)}.prow .d.c3{background:var(--sky)}
.prow p{font-size:.94rem;font-weight:700;margin:0;line-height:1.35}
.prow small{display:block;color:var(--muted);font-size:.8rem;font-weight:500;margin-top:2px}
.meter{margin-top:16px;background:var(--soft);border-radius:999px;height:10px;overflow:hidden}
.meter i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--indigo),var(--peach))}
.meter-label{display:flex;justify-content:space-between;font-size:.79rem;color:var(--muted);margin-top:9px;font-weight:700}

/* ---------------------------------------------------------------- buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:.92em 1.5em;border-radius:15px;font-weight:750;font-size:1rem;text-decoration:none;border:1.5px solid transparent;cursor:pointer;min-height:52px;transition:transform .16s ease,box-shadow .16s ease,filter .16s ease}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--indigo);color:#fff;box-shadow:var(--sh-brand)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06)}
.btn-ghost{background:var(--card);color:var(--text);border-color:var(--line)}
.btn-ghost:hover{color:var(--text);border-color:var(--indigo);background:var(--indigo-soft)}

/* ---------------------------------------------------------------- cards */
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media (min-width:640px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.grid-3{grid-template-columns:repeat(3,1fr)}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;display:flex;flex-direction:column;transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:transparent}
.card h3{margin-top:0;margin-bottom:.4em;font-size:1.2rem;font-weight:750}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:1em}
.card .card-link{margin-top:auto;font-weight:750;font-size:.92rem;text-decoration:none;display:inline-flex;align-items:center;gap:6px;color:var(--indigo-ink)}
.card .card-link::after{content:"→";transition:transform .15s ease;display:inline-block}
.card:hover .card-link::after{transform:translateX(3px)}
.card-icon{width:54px;height:54px;border-radius:18px;margin-bottom:18px}

.tile{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;text-decoration:none;color:var(--text);transition:.18s}
.tile:hover{color:var(--text);transform:translateY(-3px);box-shadow:var(--sh-2);border-color:transparent}
.tile .kicker{display:inline-flex;align-self:flex-start;background:var(--soft);color:var(--muted);border-radius:8px;padding:.3em .7em;font-size:.7rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;margin-bottom:.9em}
.tile h3{font-size:1.13rem;margin:0 0 .45em;font-weight:750;line-height:1.3}
.tile p{color:var(--muted);font-size:.92rem;margin:0}
.tile .meta{margin-top:auto;padding-top:16px;font-size:.79rem;color:var(--muted);font-weight:600;display:flex;gap:14px}

/* homepage finder */
.finder{display:grid;gap:16px}
@media (min-width:640px){.finder{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.finder{grid-template-columns:repeat(3,1fr)}}
.finder a{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;text-decoration:none;color:var(--text);transition:.18s}
.finder a:hover{color:var(--text);transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent}
.finder .fi{width:50px;height:50px;border-radius:17px;display:grid;place-items:center;margin-bottom:18px}
.finder a:nth-child(1) .fi{background:var(--indigo-soft);color:var(--indigo)}
.finder a:nth-child(2) .fi{background:var(--peach-soft);color:var(--peach-ink)}
.finder a:nth-child(3) .fi{background:var(--mint-soft);color:var(--mint)}
.finder a:nth-child(4) .fi{background:var(--sky-soft);color:var(--sky)}
.finder a:nth-child(5) .fi{background:var(--pink-soft);color:var(--pink)}
.finder a:nth-child(6) .fi{background:var(--amber-soft);color:var(--amber)}
.finder .fi svg{width:23px;height:23px}
.finder b{display:block;font-size:1.06rem;font-weight:750;margin-bottom:.25em;letter-spacing:-.02em;line-height:1.3}
.finder span span{display:block;font-size:.9rem;color:var(--muted);line-height:1.55;font-weight:450}
.finder .go{margin-top:16px;font-size:.88rem;font-weight:750;color:var(--indigo-ink);display:block}

/* ---------------------------------------------------------------- article */
.crumbs{font-size:.83rem;color:var(--muted);padding:20px 0 0;font-weight:600}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.45em;margin:0;padding:0}
.crumbs li{margin:0;display:flex;gap:.45em;align-items:center}
.crumbs li+li::before{content:"›";color:var(--line)}
.crumbs a{color:var(--muted);text-decoration:none;font-weight:600}
.crumbs a:hover{color:var(--indigo)}

.article-head{padding:22px 0 36px}
.article-head h1{margin-bottom:.32em}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;font-size:.87rem;color:var(--muted);font-weight:600}
.byline .avatar{width:42px;height:42px;border-radius:14px;flex:0 0 42px}
.byline b{color:var(--text);font-weight:750}
.byline .dot{color:var(--line)}
.badge-updated{display:inline-flex;align-items:center;gap:6px}
.badge-updated svg{width:14px;height:14px}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:34px;padding:8px 0 10px}
@media (min-width:1024px){.article-layout{grid-template-columns:236px minmax(0,1fr);gap:52px;padding-top:26px}}
@media (min-width:1220px){.article-layout{grid-template-columns:236px minmax(0,1fr) 300px}}

.toc{font-size:.9rem;min-width:0}
.toc-desktop{display:none}
@media (min-width:1024px){.toc-desktop{display:block;position:sticky;top:96px;align-self:start;max-height:calc(100vh - 120px);overflow-y:auto;background:var(--soft);border-radius:var(--r-lg);padding:20px}}
.toc-title{font-size:.7rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 .9em}
.toc ol,.toc-mobile ol{list-style:none;margin:0;padding:0}
.toc li,.toc-mobile li{margin:0}
.toc a,.toc-mobile a{display:block;padding:.42em .7em;border-radius:9px;color:var(--muted);text-decoration:none;line-height:1.42;font-size:.89rem;font-weight:600}
.toc a:hover,.toc-mobile a:hover{color:var(--indigo-ink);background:var(--bg)}
.toc a.active{color:var(--indigo-ink);background:var(--indigo-soft);font-weight:750}
.toc .lvl3,.toc-mobile .lvl3{padding-left:1.5em;font-size:.85rem}
.toc-mobile{background:var(--soft);border-radius:var(--r-lg);padding:16px 18px;margin-bottom:22px}
.toc-mobile summary{font-weight:750;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:34px}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"＋";color:var(--indigo);font-size:1.1rem}
.toc-mobile[open] summary::after{content:"－"}
@media (min-width:1024px){.toc-mobile{display:none}}

.prose{max-width:70ch;font-size:1.09rem}
.prose>*:first-child{margin-top:0}
.prose h2,.prose h3{scroll-margin-top:96px}
.aside-rail{display:none}
@media (min-width:1220px){.aside-rail{display:block;align-self:start;position:sticky;top:96px}}

.answer{background:linear-gradient(150deg,var(--indigo-soft),var(--card) 78%);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;margin:0 0 26px}
.answer .answer-label{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo-ink);margin-bottom:.75em}
.answer .answer-label svg{width:15px;height:15px}
.answer p{margin:0;font-size:1.08rem;line-height:1.62;color:var(--text);font-weight:500}

.takeaways{background:var(--mint-soft);border-radius:var(--r-lg);padding:22px 24px;margin:0 0 26px}
.takeaways h2{font-size:.95rem;font-weight:800;margin:0 0 .85em;letter-spacing:0}
.takeaways ul{margin:0;padding-left:1.2em}
.takeaways li{font-size:.97rem;color:var(--text-2);font-weight:500}
.takeaways li::marker{color:var(--mint)}

.need{background:var(--amber-soft);border-radius:var(--r-lg);padding:22px 24px;margin:0 0 26px}
.need h2{font-size:.95rem;font-weight:800;margin:0 0 .85em;letter-spacing:0;display:flex;align-items:center;gap:8px}
.need h2 svg{width:18px;height:18px;color:var(--amber)}
.need ul{list-style:none;padding:0;margin:0}
.need li{position:relative;padding-left:30px;margin-bottom:.55em;font-size:.96rem;color:var(--text-2);font-weight:500}
.need li:last-child{margin-bottom:0}
.need li::before{content:"";position:absolute;left:0;top:.32em;width:17px;height:17px;border:2px solid var(--amber);border-radius:6px}

.jump-chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 32px}
.jump-chips a{display:inline-block;padding:.5em 1em;border-radius:999px;background:var(--soft);font-size:.86rem;text-decoration:none;color:var(--text-2);min-height:38px;line-height:1.6;font-weight:650}
.jump-chips a:hover{background:var(--indigo-soft);color:var(--indigo-ink)}

.callout{border-radius:var(--r-lg);padding:20px 24px;margin:2em 0;background:var(--soft)}
.callout p:last-child{margin-bottom:0}
.callout ul:last-child{margin-bottom:0}
.callout .c-title{display:flex;align-items:center;gap:9px;font-weight:800;font-size:.95rem;margin-bottom:.6em}
.callout .c-title svg{width:18px;height:18px;flex:0 0 18px}
.callout-warn{background:var(--amber-soft)}
.callout-warn .c-title{color:var(--amber)}
.callout-tip{background:var(--indigo-soft)}
.callout-tip .c-title{color:var(--indigo-ink)}

.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:2em 0;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:.94rem}
caption{caption-side:top;text-align:left;padding:16px 20px 6px;font-size:.85rem;color:var(--muted);font-weight:700}
th,td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}
thead th{background:var(--soft);font-weight:800;font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line)}
tbody tr:last-child td{border-bottom:0}

.steps{list-style:none;counter-reset:s;padding:0;margin:2em 0}
.steps>li{counter-increment:s;position:relative;padding-left:56px;margin-bottom:1.6em}
.steps>li::before{content:counter(s);position:absolute;left:0;top:-2px;width:38px;height:38px;border-radius:13px;background:var(--indigo-soft);color:var(--indigo-ink);font-weight:800;font-size:.95rem;display:grid;place-items:center}
.steps h3{margin:0 0 .3em;font-size:1.08rem;font-weight:750}

.faq{margin:2.4em 0 0}
.faq details{border-radius:var(--r);background:var(--soft);margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:17px 20px;font-weight:750;font-size:1rem;list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:flex-start;min-height:46px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--indigo);flex:0 0 auto;font-size:1.05rem;line-height:1.5}
.faq details[open] summary::after{content:"－"}
.faq .faq-body{padding:0 20px 18px;color:var(--text-2);font-size:.98rem;font-weight:450}
.faq .faq-body p:last-child{margin-bottom:0}

.sources{margin:2.6em 0 0;padding:24px;background:var(--soft);border-radius:var(--r-lg);font-size:.92rem}
.sources h2{font-size:.95rem;font-weight:800;margin:0 0 .8em;letter-spacing:0}
.sources ul{margin:0;padding-left:1.2em}
.sources li{color:var(--muted);margin-bottom:.4em}

.author-box{display:flex;gap:18px;align-items:flex-start;margin:2.8em 0 0;padding:26px;border-radius:var(--r-lg);background:var(--indigo-soft)}
.author-box svg.avatar{width:56px;height:56px;border-radius:18px;flex:0 0 56px}
.author-box h2{font-size:1rem;font-weight:800;margin:0 0 .4em;letter-spacing:-.01em}
.author-box p{font-size:.92rem;color:var(--text-2);margin:0;font-weight:450}

.disclaimer{margin:2.4em 0 0;padding:18px 22px;border:1px dashed var(--line);border-radius:var(--r);font-size:.86rem;color:var(--muted)}
.disclaimer p{margin:0}
.next-reads{margin:3em 0 0}
.next-reads h2{font-size:1.1rem;font-weight:800;letter-spacing:-.02em;margin-bottom:1em}

.series{display:grid;gap:12px;margin:2.6em 0 0}
@media (min-width:640px){.series{grid-template-columns:1fr 1fr}}
.series a{display:block;padding:20px 22px;border-radius:var(--r-lg);background:var(--soft);text-decoration:none;color:var(--text);transition:.16s}
.series a:hover{color:var(--text);background:var(--indigo-soft)}
.series .dir{display:block;font-size:.72rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--indigo);margin-bottom:.5em}
.series b{font-weight:750;font-size:.98rem;line-height:1.4;display:block}
.series .next-item{text-align:right}

/* ---------------------------------------------------------------- diagrams */
.dgm{margin:2.5em 0;border:1px solid var(--line);border-radius:var(--r-xl);background:var(--card);padding:22px 20px;box-shadow:var(--sh-1)}
@media (min-width:768px){.dgm{padding:28px}}
.dgm-title{font-size:.72rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo);margin:0 0 18px}
.dgm figcaption,.dgm .dgm-note{margin:18px 0 0;padding-top:16px;border-top:1px solid var(--line-2);font-size:.86rem;color:var(--muted);line-height:1.58}

.flow{display:flex;flex-direction:column;gap:10px;align-items:stretch}
.flow-step{background:var(--soft);border-radius:var(--r);padding:15px 17px;flex:1 1 0;min-width:0}
.flow-step b{display:block;font-size:.97rem;margin-bottom:.28em;color:var(--text);font-weight:750}
.flow-step span{display:block;font-size:.86rem;color:var(--muted);line-height:1.5}
.flow-step.is-end{background:var(--mint-soft)}
.flow-step.is-start{background:var(--indigo-soft)}
.flow-arrow{align-self:center;color:var(--indigo);font-size:1.2rem;line-height:1;font-weight:800}
@media (min-width:820px){.flow{flex-direction:row;align-items:stretch}.flow-arrow{transform:rotate(-90deg)}}

.tree{font-size:.96rem}
.tree-q{background:var(--indigo-soft);border-radius:var(--r);padding:14px 17px;font-weight:750;color:var(--indigo-ink)}
.tree-branch{margin-top:10px;padding-left:16px;border-left:2px solid var(--line)}
@media (min-width:600px){.tree-branch{padding-left:22px}}
.tree-label{display:inline-block;font-size:.68rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:14px 0 7px;background:var(--soft);border-radius:999px;padding:.3em .85em}
.tree-out{background:var(--mint-soft);border-radius:var(--r);padding:14px 17px}
.tree-out b{display:block;margin-bottom:.2em;font-weight:750}
.tree-out span{font-size:.88rem;color:var(--muted);display:block;line-height:1.5}
.tree-out.alt{background:var(--amber-soft)}

.bars{display:grid;gap:17px}
.bar-row{display:grid;gap:7px}
.bar-head{display:flex;justify-content:space-between;gap:14px;font-size:.92rem;align-items:baseline}
.bar-head b{font-weight:750}
.bar-head em{font-style:normal;color:var(--muted);font-size:.82rem;display:block;font-weight:500}
.bar-head .val{color:var(--text);font-weight:800;font-variant-numeric:tabular-nums;white-space:nowrap}
.bar-track{height:16px;border-radius:999px;background:var(--soft);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:var(--v3);display:block}
.bar-fill.dim{background:var(--v1)}
.bar-fill.mid{background:var(--v2)}
.bar-fill.good,.bar-fill.warn{background:var(--v3)}

.gauge{max-width:420px;margin-inline:auto}
.gauge-scale{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted);margin-top:6px;font-variant-numeric:tabular-nums;padding:0 8%;font-weight:700}
.gauge-key{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.gauge-key li{display:flex;gap:11px;align-items:flex-start;font-size:.9rem}
.gauge-key i{flex:0 0 15px;height:15px;border-radius:5px;margin-top:.28em}

.legend{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
@media (min-width:640px){.legend{grid-template-columns:1fr 1fr;gap:10px 26px}}
.legend li{display:flex;gap:11px;align-items:flex-start;font-size:.9rem;margin:0;line-height:1.5}
.legend .n{flex:0 0 24px;height:24px;border-radius:8px;background:var(--indigo);color:#fff;font-size:.74rem;font-weight:800;display:grid;place-items:center;margin-top:.05em}

.figure{margin:2.2em 0}
.figure figcaption{font-size:.84rem;color:var(--muted);margin-top:.8em}
.stat-row{display:grid;gap:14px;grid-template-columns:repeat(2,1fr);margin:2em 0}
@media (min-width:768px){.stat-row{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--soft);border-radius:var(--r);padding:20px}
.stat b{display:block;font-size:1.85rem;line-height:1.05;color:var(--indigo-ink);margin-bottom:.24em;font-weight:800;letter-spacing:-.03em}
.stat span{font-size:.83rem;color:var(--muted);font-weight:550}
.pill{display:inline-block;padding:.32em .85em;border-radius:999px;background:var(--indigo-soft);color:var(--indigo-ink);font-size:.76rem;font-weight:750}
.hub-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.hub-head{display:grid;gap:24px;align-items:center}
@media (min-width:860px){.hub-head{grid-template-columns:1.25fr .75fr;gap:40px}}
.hub-art{max-width:300px;width:100%;margin-inline:auto}
.hub-art svg{width:100%;height:auto}

/* ---------------------------------------------------------------- search */
.search-modal{position:fixed;inset:0;z-index:300;background:rgba(16,14,26,.5);backdrop-filter:blur(4px);display:none;padding:12vh 16px 16px}
.search-modal.open{display:block}
.search-box{max-width:600px;margin-inline:auto;background:var(--card);border-radius:var(--r-xl);box-shadow:var(--sh-3);overflow:hidden}
.search-box input{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);font:inherit;font-size:1.05rem;font-weight:600;padding:20px 22px;outline:none}
.search-results{max-height:52vh;overflow-y:auto;padding:10px}
.search-results a{display:block;padding:12px 15px;border-radius:13px;text-decoration:none;color:var(--text);font-weight:450}
.search-results a:hover,.search-results a.sel{background:var(--indigo-soft)}
.search-results b{display:block;font-size:.97rem;font-weight:750}
.search-results span{display:block;font-size:.83rem;color:var(--muted);margin-top:.15em}
.search-empty{padding:24px;text-align:center;color:var(--muted);font-size:.92rem}

/* ---------------------------------------------------------------- glossary */
.az{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 32px;padding:18px;background:var(--soft);border-radius:var(--r-lg)}
.az a{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--card);text-decoration:none;font-weight:750;font-size:.88rem;color:var(--text)}
.az a:hover{background:var(--indigo);color:#fff}
.az span{display:grid;place-items:center;width:38px;height:38px;color:var(--line);font-size:.88rem}
.gl-group{margin:0 0 36px;scroll-margin-top:96px}
.gl-group>h2{font-size:1.45rem;margin:0 0 16px;padding-bottom:10px;border-bottom:2px solid var(--indigo);display:block;font-weight:800}
.gl{display:grid;gap:12px}
.gl div{background:var(--soft);border-radius:var(--r-lg);padding:18px 20px;scroll-margin-top:96px}
.gl dt{font-weight:800;font-size:1rem;margin-bottom:.3em;color:var(--text)}
.gl dd{margin:0;font-size:.94rem;color:var(--text-2);line-height:1.6;font-weight:450}
.gl dd .also{display:block;margin-top:.55em;font-size:.85rem;color:var(--muted)}

/* ---------------------------------------------------------------- ads */
.ad-slot{margin:2.4em auto;text-align:center;overflow:hidden;background:var(--soft);border-radius:var(--r-lg);display:flex;flex-direction:column;justify-content:flex-start;align-items:center;padding:12px}
.ad-slot::before{content:"Advertisement";font-size:.63rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);opacity:.75;margin-bottom:8px;font-weight:700}
.ad-inarticle{min-height:280px}
.ad-rail{min-height:600px;width:300px}
.ad-footer{min-height:280px}

/* ---------------------------------------------------------------- footer */
.site-footer{background:var(--soft);padding:60px 0 32px;margin-top:80px;font-size:.93rem;border-top:1px solid var(--line)}
.footer-grid{display:grid;gap:34px;margin-bottom:38px}
@media (min-width:700px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr}}
.footer-grid h2{font-size:.74rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 1.1em}
.footer-grid ul{list-style:none;margin:0;padding:0}
.footer-grid li{margin-bottom:.65em}
.footer-grid a{color:var(--text-2);text-decoration:none;font-weight:600}
.footer-grid a:hover{color:var(--indigo-ink)}
.footer-about p{color:var(--muted);font-size:.9rem;max-width:34ch;font-weight:450}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;color:var(--muted);font-size:.85rem;font-weight:550}
.footer-legal{max-width:70ch;color:var(--muted);font-size:.82rem;line-height:1.62;margin-bottom:22px;font-weight:450}
@media (min-width:1220px){.article-wrap{max-width:1330px}}

/* ==========================================================================
   Mobile accessibility pass — tap targets >= 44px, no text below 12px
   ========================================================================== */

/* --- tap targets --- */
.brand{min-height:44px}
.search-btn,.nav-toggle,.header-cta{min-height:44px}
.chip{min-height:44px}
.card .card-link{min-height:44px;align-items:center}
.jump-chips a{display:inline-flex;align-items:center;min-height:44px;line-height:1.35}
.toc-mobile summary{min-height:44px}
.az a,.az span{width:44px;height:44px}
.footer-grid li{margin-bottom:.45em}
.footer-grid a{display:inline-block;padding:.32em 0}
.gl dd .also a{display:inline-block;padding:.25em 0}
.sources li{margin-bottom:.55em}
.sources a{display:inline-block;padding:.2em 0}

/* --- minimum legible text size (12px floor on every label) --- */
.brand small{font-size:.68rem;letter-spacing:.13em}
.eyebrow{font-size:.78rem}
.tile .kicker{font-size:.74rem}
.toc-title{font-size:.74rem}
.dgm-title{font-size:.76rem}
.footer-grid h2{font-size:.78rem}
.answer .answer-label{font-size:.76rem}
.series .dir{font-size:.76rem}
.tree-label{font-size:.74rem}
.chip b{font-size:.76rem}
.ad-slot::before{font-size:.7rem}
.legend .n,.prow .d{font-size:.78rem}

/* --- extra breathing room on the narrowest phones --- */
@media (max-width:359px){
  .wrap{padding-inline:16px}
  h1{font-size:1.95rem}
  .hero-cta .btn{width:100%}
  .finder a,.tile,.card{padding:20px}
  .dgm{padding:18px 16px}
  .brand{font-size:1.15rem}
  .brand small{display:none}
}
/* final 12px floor */
.tile .kicker,.toc-title,.tree-label{font-size:.78rem}
.brand small{font-size:.76rem;letter-spacing:.1em}
.dgm-title,.answer .answer-label,.series .dir,.chip b{font-size:.78rem}