/* Inner page system: same language as the homepage (Inter Tight display, Inter body, #F5F4F2 ground) */
:root{--bg:#F5F4F2;--ink:#151413;--muted:#6B6762;--soft:#A39E97;--line:rgba(21,20,19,.08);--card:#fff;--red:#E5322D;--red-ink:#B4231F;--display:'Inter Tight',system-ui,sans-serif;--body:'Inter',system-ui,sans-serif}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 24px}
.pill{display:inline-block;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:500;color:var(--muted);text-decoration:none}
.pill-red{background:rgba(229,50,45,.1);border-color:transparent;color:var(--red-ink)}

/* page head */
.page-head{padding:72px 0 40px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs span[aria-hidden]{color:var(--soft)}
.page-head h1{margin:18px 0 0;font-family:var(--display);font-weight:600;font-size:clamp(36px,5.2vw,64px);line-height:1.02;letter-spacing:-.04em;color:var(--ink);max-width:900px}
.page-head h1 .soft{color:var(--soft)}
.page-head .dek{margin:18px 0 0;max-width:680px;font-size:19px;line-height:1.6;color:var(--muted)}
.meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px;font-size:14px;color:var(--muted)}
.meta strong{color:var(--ink);font-weight:600}
.hero-img{margin:36px 0 0;border-radius:32px;overflow:hidden;aspect-ratio:21/9;background:#e9e6e2}
.hero-img img{width:100%;height:100%;object-fit:cover;display:block}

/* article grid */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:24px 0 64px;align-items:start}
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}
.toc{padding:20px;border-radius:24px;background:#fff;border:1px solid var(--line)}
.toc .t{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.toc ol{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc a{display:block;padding:7px 10px;border-radius:10px;font-size:14px;line-height:1.35;color:var(--ink);text-decoration:none}
.toc a:hover{background:rgba(21,20,19,.05)}
.app-card{padding:22px;border-radius:24px;background:var(--ink);color:#fff}
.app-card h3{margin:0;font-family:var(--display);font-size:21px;font-weight:600;letter-spacing:-.4px;line-height:1.2}
.app-card p{margin:8px 0 16px;font-size:14px;line-height:1.55;color:rgba(255,255,255,.72)}
.app-card a{display:flex;justify-content:center;align-items:center;gap:8px;padding:12px 16px;border-radius:14px;background:#fff;color:var(--ink);text-decoration:none;font-weight:600;font-size:14px}
.app-card .rating{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12px;color:rgba(255,255,255,.65)}

/* prose */
.prose{font-family:var(--body);font-size:18px;line-height:1.75;color:#2A2724}
.prose > *:first-child{margin-top:0}
.prose h2{margin:56px 0 0;font-family:var(--display);font-weight:600;font-size:clamp(26px,3vw,34px);line-height:1.15;letter-spacing:-.03em;color:var(--ink);scroll-margin-top:96px}
.prose h3{margin:36px 0 0;font-family:var(--display);font-weight:600;font-size:22px;line-height:1.25;letter-spacing:-.02em;color:var(--ink)}
.prose p{margin:18px 0 0}
.prose ul,.prose ol{margin:18px 0 0;padding-left:22px}
.prose li{margin:8px 0 0}
.prose li::marker{color:var(--red)}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:rgba(229,50,45,.5);text-underline-offset:3px}
.prose a:hover{text-decoration-color:var(--red)}
.prose strong{color:var(--ink)}
.prose blockquote{margin:28px 0 0;padding:20px 24px;border-radius:20px;background:#fff;border:1px solid var(--line);font-family:var(--display);font-size:21px;line-height:1.45;color:var(--ink)}
.prose img{max-width:100%;border-radius:24px;margin-top:28px;display:block}
.prose table{width:100%;margin:28px 0 0;border-collapse:separate;border-spacing:0;font-size:15px;line-height:1.45;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.prose th{background:#F0EEEB;text-align:left;font-weight:600;color:var(--ink);padding:12px 14px;font-size:13px;letter-spacing:.02em}
.prose td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.prose .table-wrap{overflow-x:auto}
.callout{margin:28px 0 0;padding:18px 20px;border-radius:18px;background:#fff;border:1px solid var(--line);font-size:16px;line-height:1.6}
.callout.warn{background:#FFF4E5;border-color:#F6D9A8;color:#6B3D00}
.callout.rule{background:#EEF3FF;border-color:#D3DEFB;color:#1D3A7A}
.callout b{display:block;margin-bottom:4px;font-family:var(--display);font-size:15px}

/* blocks */
.block{padding:64px 0}
.sec-title{margin:16px 0 0;font-family:var(--display);font-weight:600;font-size:clamp(30px,4vw,48px);line-height:1.05;letter-spacing:-.035em;color:var(--ink)}
.sec-title .soft{color:var(--soft)}
.faq-list{margin-top:32px;display:flex;flex-direction:column;gap:10px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 22px}
.faq-list summary{font-family:var(--display);font-size:18px;font-weight:600;letter-spacing:-.2px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';font-weight:400;color:var(--muted)}
.faq-list details[open] summary::after{content:'\2212'}
.faq-list p{margin:12px 0 0;font-size:16px;line-height:1.65;color:var(--muted)}
.sources{margin-top:28px;padding:22px 24px;border-radius:22px;background:#fff;border:1px solid var(--line)}
.sources .t{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.sources ol{margin:12px 0 0;padding-left:20px;font-size:14px;line-height:1.6;color:var(--muted)}
.sources a{color:var(--ink)}
.disclaimer{margin-top:16px;font-size:13px;line-height:1.6;color:var(--muted)}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.post-card{display:flex;flex-direction:column;border-radius:26px;background:#fff;border:1px solid var(--line);overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:0 1px 2px rgba(20,16,12,.04);transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s}
.post-card:hover{transform:translateY(-3px);box-shadow:0 30px 60px -30px rgba(40,20,10,.3)}
.post-card .img{aspect-ratio:16/10;background:#e9e6e2 center/cover no-repeat}
.post-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-card .cat{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--red-ink)}
.post-card h3{margin:0;font-family:var(--display);font-size:21px;font-weight:600;line-height:1.22;letter-spacing:-.3px}
.post-card p{margin:0;font-size:15px;line-height:1.55;color:var(--muted)}
.post-card .foot{margin-top:auto;padding-top:10px;font-size:13px;color:var(--soft)}
.post-card.feature{grid-column:1/-1;flex-direction:row}
.post-card.feature .img{flex:1 1 55%;aspect-ratio:auto;min-height:340px}
.post-card.feature .body{flex:1 1 45%;padding:40px;justify-content:center}
.post-card.feature h3{font-size:clamp(26px,3vw,36px)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.chip{padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--ink);cursor:pointer;font-family:var(--body)}
.chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.link-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.link-list a{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 4px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-family:var(--display);font-size:19px;font-weight:600;letter-spacing:-.2px}
.link-list a span{font-family:var(--body);font-size:14px;font-weight:400;color:var(--muted)}
.link-list a:hover{color:var(--red-ink)}

/* tool shell */
.tool{padding:28px;border-radius:30px;background:#fff;border:1px solid var(--line);box-shadow:0 1px 2px rgba(20,16,12,.04),0 24px 50px -30px rgba(40,20,10,.25)}
.tool .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.tool label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.tool input,.tool select{font:inherit;font-size:16px;font-weight:500;color:var(--ink);padding:12px 14px;border-radius:12px;border:1px solid rgba(21,20,19,.14);background:#FAF9F7;min-height:46px;box-sizing:border-box;width:100%}
.tool input:focus,.tool select:focus{outline:2px solid rgba(229,50,45,.35);outline-offset:1px;border-color:transparent}
.tool .result{margin-top:18px;padding:20px 22px;border-radius:20px;background:var(--bg)}
.tool .big{font-family:var(--display);font-size:clamp(30px,4vw,44px);font-weight:600;letter-spacing:-.03em;color:var(--ink);line-height:1.05}
.tool .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin-top:14px}
.tool .stat{padding:12px 14px;border-radius:14px;background:#fff}
.tool .stat span{display:block;font-size:12px;color:var(--muted)}
.tool .stat b{font-family:var(--display);font-size:20px;letter-spacing:-.3px}
.tool button.go{margin-top:16px;width:100%;padding:14px;border:0;border-radius:14px;background:var(--ink);color:#fff;font:600 16px var(--body);cursor:pointer}
.data-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;font-size:15px}
.data-table th{background:#F0EEEB;text-align:left;padding:12px 14px;font-size:13px}
.data-table td{padding:12px 14px;border-top:1px solid var(--line)}

/* cta band */
.cta-band{margin:0 auto;max-width:1200px;padding:0 24px}
.cta-band .in{position:relative;overflow:hidden;border-radius:36px;background:#1A1513;color:#fff;padding:clamp(32px,5vw,64px);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{margin:0;font-family:var(--display);font-weight:600;font-size:clamp(30px,4vw,48px);line-height:1.02;letter-spacing:-.035em}
.cta-band h2 span{color:rgba(255,255,255,.55)}
.cta-band .btns{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btns a{display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:16px;text-decoration:none;font-weight:600}

@media (max-width:960px){
  .article-grid{grid-template-columns:1fr;gap:32px}
  .side{position:static}
  .post-card.feature{flex-direction:column}
  .post-card.feature .img{min-height:220px}
  .post-card.feature .body{padding:24px}
}
@media (max-width:640px){
  .page-head{padding:44px 0 28px}
  .prose{font-size:17px}
  .hero-img{border-radius:22px;aspect-ratio:16/10}
}
.menu-panel a[aria-current]{background:rgba(21,20,19,.08);font-weight:600}