:root{
  --berry:#8b255f;
  --berry-dark:#5d1740;
  --berry-soft:#f7ddeb;
  --cocoa:#3b241f;
  --cocoa-2:#5b352d;
  --cream:#fff9ef;
  --paper:#fffdf9;
  --pistachio:#dce9c5;
  --pistachio-dark:#47623a;
  --gold:#e0aa3e;
  --gold-soft:#f8e7b7;
  --ink:#2b2322;
  --muted:#6d6260;
  --line:#e4d8cf;
  --white:#fff;
  --shadow:0 12px 34px rgba(59,36,31,.10);
  --radius:18px;
  --wrap:1480px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.68;font-size:17px}
img,svg{max-width:100%;height:auto}
a{color:var(--berry-dark);text-decoration-thickness:.08em;text-underline-offset:.16em}
a:hover{color:var(--berry)}
button,input,select,textarea{font:inherit}
h1,h2,h3,h4{font-family:Georgia,"Times New Roman",serif;line-height:1.12;color:var(--cocoa);margin:0 0 .65em}
h1{font-size:clamp(2.35rem,5vw,5.5rem);letter-spacing:-.035em}
h2{font-size:clamp(1.65rem,2.7vw,2.8rem);letter-spacing:-.018em}
h3{font-size:clamp(1.2rem,1.7vw,1.55rem)}
p,ul,ol{margin:0 0 1.15rem}
li+li{margin-top:.4rem}
.wrap{width:min(calc(100% - 36px),var(--wrap));margin-inline:auto}
.narrow{max-width:850px}
.center{text-align:center}
.skip-link{position:absolute;left:8px;top:-80px;background:var(--cocoa);color:#fff;padding:.7rem 1rem;border-radius:8px;z-index:1000}
.skip-link:focus{top:8px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,249,239,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{width:min(calc(100% - 30px),var(--wrap));margin:auto;display:flex;align-items:center;gap:1.5rem;min-height:82px}
.brand{display:flex;align-items:center;gap:.8rem;color:var(--cocoa);text-decoration:none;min-width:0;font-family:Georgia,"Times New Roman",serif;font-size:1.15rem;font-weight:700;line-height:1.12}
.brand img{width:46px!important;height:46px!important;min-width:46px;display:block;object-fit:contain}
.brand span{display:block;min-width:0}
.brand small{display:block;color:var(--muted);font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:.72rem;font-weight:600;letter-spacing:.02em;margin-top:.22rem}
.site-nav{margin-left:auto}
.site-nav ul{display:flex;align-items:center;gap:.15rem;list-style:none;margin:0;padding:0}
.site-nav a{display:block;padding:.62rem .72rem;border-radius:999px;color:var(--cocoa);font-size:.91rem;font-weight:750;text-decoration:none;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{background:var(--berry-soft);color:var(--berry-dark)}
.nav-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:var(--paper);color:var(--cocoa);border-radius:10px;padding:.55rem .8rem;font-weight:800}
.hero{background:
 radial-gradient(circle at 90% 10%,rgba(224,170,62,.28),transparent 30%),
 radial-gradient(circle at 10% 90%,rgba(220,233,197,.65),transparent 32%),
 linear-gradient(135deg,#fff8eb 0%,#fbe7ef 60%,#f8e6bd 100%);
 border-bottom:1px solid var(--line);padding:clamp(3rem,7vw,7rem) 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(330px,.88fr);gap:clamp(2rem,5vw,5rem);align-items:center}
.hero p,.page-hero .lead{font-size:clamp(1.08rem,1.8vw,1.32rem);color:#554746;max-width:800px}
.eyebrow,.kicker{display:inline-flex;align-items:center;gap:.4rem;color:var(--berry-dark);font-size:.78rem;font-weight:900;letter-spacing:.11em;text-transform:uppercase;margin-bottom:1rem}
.eyebrow:before,.kicker:before{content:"";width:24px;height:3px;border-radius:3px;background:var(--gold)}
.eyebrow.dark{background:var(--berry-soft);padding:.45rem .72rem;border-radius:999px}
.hero-card,.diagram{background:rgba(255,255,255,.78);border:1px solid rgba(139,37,95,.16);border-radius:28px;padding:clamp(1.25rem,3vw,2.2rem);box-shadow:var(--shadow)}
.system-list{display:grid;gap:.85rem}
.system-row{display:grid;grid-template-columns:42px 1fr;gap:.9rem;align-items:start;padding:.85rem;background:var(--paper);border:1px solid var(--line);border-radius:14px}
.system-row b{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--berry);color:#fff}
.hero-actions,.button-row,.actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.5rem}
.center-actions{justify-content:center}
.btn{display:inline-flex;justify-content:center;align-items:center;min-height:46px;padding:.72rem 1rem;border-radius:11px;border:1px solid transparent;font-weight:850;text-decoration:none;cursor:pointer}
.btn-primary{background:var(--berry);color:#fff}
.btn-primary:hover{background:var(--berry-dark);color:#fff}
.btn-secondary{background:var(--paper);color:var(--berry-dark);border-color:var(--berry)}
.btn-muted{background:#eee6de;color:var(--cocoa);border-color:#d6c6ba}
.section{padding:clamp(3.2rem,7vw,6.5rem) 0}
.section.alt{background:#f4ede4;border-block:1px solid var(--line)}
.section.berry{background:linear-gradient(135deg,var(--berry-dark),var(--cocoa-2));color:#fff}
.section.berry h2,.section.berry h3,.section.berry p,.section.berry .kicker{color:#fff}
.section.berry .card{color:var(--ink)}
.section.berry .card h3{color:var(--cocoa)}
.section-head{max-width:920px;margin-bottom:2rem}
.section-head p{font-size:1.08rem;color:var(--muted)}
.section.berry .section-head p{color:#f7e9ee}
.grid{display:grid;gap:1.1rem}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:1.35rem;box-shadow:0 4px 16px rgba(59,36,31,.045)}
.card h2,.card h3{margin-bottom:.45rem}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.card-link{display:block;color:var(--ink);text-decoration:none;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card-link:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d8a8c0;color:var(--ink)}
.icon-chip{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--pistachio);color:var(--pistachio-dark);font-weight:950;margin-bottom:1rem}
.page-hero{padding:clamp(2.7rem,6vw,5.2rem) 0;background:
 linear-gradient(120deg,rgba(247,221,235,.88),rgba(255,249,239,.9) 45%,rgba(220,233,197,.8));
 border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(2.2rem,4.8vw,4.7rem);max-width:1100px}
.breadcrumbs{font-size:.88rem;color:var(--muted);margin-bottom:1.25rem}
.breadcrumbs a{color:var(--muted)}
.meta-row{display:flex;gap:.55rem;flex-wrap:wrap;margin-top:1.1rem}
.meta-pill{background:rgba(255,255,255,.72);border:1px solid var(--line);padding:.38rem .65rem;border-radius:999px;font-size:.83rem;font-weight:700}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:clamp(2rem,5vw,4.5rem);align-items:start;padding-block:clamp(2.5rem,6vw,5.5rem)}
.content{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:clamp(1.35rem,3vw,2.8rem);box-shadow:0 7px 24px rgba(59,36,31,.045)}
.content h2{margin-top:1.8em}
.content h3{margin-top:1.5em}
.content>h2:first-child{margin-top:0}
.content a{overflow-wrap:anywhere}
.content table{width:100%;border-collapse:collapse;margin:1.4rem 0;display:block;overflow:auto}
.content th,.content td{padding:.75rem;border:1px solid var(--line);text-align:left}
.content th{background:#f4ede4}
.sidebar{display:grid;gap:1rem;position:sticky;top:104px}
.sidebar .card h2{font-size:1.25rem}
.plain-list{padding-left:1.2rem}
.note-card{background:var(--pistachio)}
.callout{border-left:5px solid var(--gold);background:var(--gold-soft);padding:1rem 1.1rem;border-radius:0 14px 14px 0;margin:1.4rem 0}
.callout.good{border-color:var(--pistachio-dark);background:#edf5df}
.related{border-top:1px solid var(--line);margin-top:2.5rem;padding-top:1rem}
.tool-shell{background:#fcf7f1;border:1px solid var(--line);border-radius:18px;padding:clamp(1rem,3vw,1.8rem)}
.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.field{display:grid;gap:.35rem}
.field.full{grid-column:1/-1}
.field label{font-weight:800;color:var(--cocoa)}
.field input,.field select,.field textarea{width:100%;border:1px solid #cdbdb1;background:#fff;color:var(--ink);border-radius:10px;padding:.72rem .78rem;min-height:45px}
.field textarea{min-height:95px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid rgba(139,37,95,.18);border-color:var(--berry)}
.result{display:none;margin-top:1.25rem;background:var(--pistachio);border:1px solid #bed19e;border-radius:14px;padding:1rem}
.result.active{display:block}
.result h2,.result h3{margin-bottom:.4rem}
.result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}
.result-stat{background:rgba(255,255,255,.7);border-radius:10px;padding:.8rem}
.result-stat strong{display:block;font-size:1.35rem;color:var(--berry-dark)}
.faq-list{display:grid;gap:.8rem}
.faq-list details{border:1px solid var(--line);border-radius:14px;background:#fff;padding:.2rem 1rem}
.faq-list summary{cursor:pointer;font-weight:850;color:var(--cocoa);padding:.85rem 0}
.faq-list details p{padding-bottom:.85rem;margin:0}
.author-card{display:flex;align-items:center;gap:1rem;padding:1rem;background:var(--pistachio);border-radius:18px}
.author-mark{display:grid;place-items:center;min-width:74px;height:74px;border-radius:50%;background:var(--berry);color:#fff;font-family:Georgia,serif;font-size:1.45rem;font-weight:900}
.guide-group{margin-top:2.5rem}
.guide-index{list-style:none;padding:0;display:grid;gap:.7rem}
.guide-index li{display:grid;grid-template-columns:minmax(220px,.42fr) minmax(0,.58fr);gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.guide-index li span{color:var(--muted)}
.columns-list{columns:3;column-gap:2rem}
.columns-list li{break-inside:avoid;margin-bottom:.45rem}
.site-footer{background:var(--cocoa);color:#eadfd8;padding:3.5rem 0 1.2rem;margin-top:2rem}
.site-footer h2,.site-footer h3{color:#fff}
.site-footer a{color:#f6d6e7}
.site-footer ul{list-style:none;padding:0}
.footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:2rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.18);padding-top:1rem;margin-top:2rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.88rem;color:#cdbfb8}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
@media (max-width:1120px){
  .site-nav a{font-size:.82rem;padding:.55rem .5rem}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  body{font-size:16px}
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;top:100%;left:15px;right:15px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:.7rem;box-shadow:var(--shadow)}
  .site-nav.open{display:block}
  .site-nav ul{display:grid}
  .site-nav a{padding:.7rem .8rem;font-size:.95rem}
  .hero-grid,.content-layout{grid-template-columns:1fr}
  .sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .columns-list{columns:2}
}
@media (max-width:620px){
  .wrap{width:min(calc(100% - 24px),var(--wrap))}
  .header-inner{width:calc(100% - 20px);min-height:72px}
  .brand{font-size:.95rem}
  .brand small{font-size:.63rem}
  .brand img{width:42px!important;height:42px!important;min-width:42px}
  h1{font-size:2.45rem}
  .grid-2,.grid-3,.grid-4,.tool-grid,.result-grid,.sidebar,.footer-grid{grid-template-columns:1fr}
  .guide-index li{grid-template-columns:1fr;gap:.25rem}
  .columns-list{columns:1}
  .content{padding:1.1rem;border-radius:18px}
  .hero-actions .btn,.button-row .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{
  .site-header,.site-footer,.sidebar,.hero-actions,.actions,.skip-link{display:none!important}
  body{background:#fff;color:#000}
  .content-layout{display:block;padding:0}
  .content{border:0;box-shadow:none;padding:0}
}