/* AreYouOK blog/shared styles — mirrors index.html design tokens */
:root{
  --blue:#2E6BFF; --indigo:#5B5BF5; --green:#34C759; --red:#FF3B30;
  --ink:#0B1020; --text:#1C2230; --muted:#6B7385; --line:#E7EAF0;
  --bg:#FFFFFF; --soft:#F5F7FB; --card:#FFFFFF;
  --radius:20px; --shadow:0 10px 40px rgba(13,20,40,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;border-radius:999px;padding:14px 26px;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 24px rgba(46,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(46,107,255,.45)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:rgba(46,107,255,.1);padding:6px 12px;border-radius:999px}
h1,h2,h3,h4{color:var(--ink);line-height:1.22;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:1.12rem;max-width:720px}

/* Nav (matches index) */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:14px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:1.1rem}
.brand img{width:34px;height:34px;border-radius:9px}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--text);font-weight:500;font-size:.95rem}
.nav-links a:hover{color:var(--blue)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav .btn{padding:9px 18px;font-size:.92rem}
.lang-select{appearance:none;-webkit-appearance:none;border:1px solid var(--line);background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B7385' d='M6 8 0 0h12z'/%3E%3C/svg%3E") no-repeat right 12px center;padding:8px 30px 8px 12px;border-radius:999px;font:inherit;font-size:.9rem;color:var(--text);cursor:pointer}
@media(max-width:820px){.nav-links{display:none}}

/* Blog hero */
.blog-hero{background:var(--soft);border-bottom:1px solid var(--line);padding:56px 0 48px}
.blog-hero h1{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;margin:14px 0 12px}
.breadcrumb{font-size:.85rem;color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}

/* Post grid (index) */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding:54px 0}
@media(max-width:760px){.post-grid{grid-template-columns:1fr}}
.post-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.post-card .tag{align-self:flex-start;font-size:.74rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--blue);background:rgba(46,107,255,.1);padding:5px 11px;border-radius:999px;margin-bottom:14px}
.post-card h2{font-size:1.32rem;font-weight:700;margin-bottom:10px}
.post-card p{color:var(--muted);font-size:.98rem;flex:1}
.post-card .more{color:var(--blue);font-weight:600;font-size:.92rem;margin-top:16px}

/* Article */
.article{max-width:760px;margin:0 auto;padding:48px 22px 30px}
.article .meta{color:var(--muted);font-size:.9rem;margin:10px 0 26px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.article h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.2}
.article h2{font-size:1.55rem;font-weight:800;margin:42px 0 14px}
.article h3{font-size:1.2rem;font-weight:700;margin:28px 0 10px}
.article p{margin:0 0 18px;font-size:1.07rem;color:var(--text)}
.article ul,.article ol{margin:0 0 18px 1.2em;font-size:1.07rem}
.article li{margin:8px 0}
.article a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.article strong{color:var(--ink)}
.tldr{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:14px;padding:20px 24px;margin:24px 0 30px}
.tldr h2{font-size:1.05rem;margin:0 0 8px;color:var(--blue);text-transform:uppercase;letter-spacing:.05em}
.tldr p{margin:0;font-size:1.02rem}
.keyfacts{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:6px 24px;margin:24px 0}
table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.98rem}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line)}
th{color:var(--ink);font-weight:700;background:var(--soft)}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:0 0 30px;font-size:.96rem}
.toc strong{display:block;margin-bottom:8px;color:var(--ink)}
.toc a{color:var(--text)}.toc a:hover{color:var(--blue)}
.toc ul{list-style:none;margin:0}.toc li{margin:6px 0}
.cta-box{background:radial-gradient(700px 300px at 50% -30%,rgba(91,91,245,.5),transparent),linear-gradient(160deg,#0B1020,#16204a);color:#fff;border-radius:var(--radius);padding:32px;text-align:center;margin:40px 0}
.cta-box h3{color:#fff;font-size:1.4rem;margin-bottom:8px}
.cta-box p{color:#C7CEE0;margin:0 auto 18px;max-width:480px}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
details summary{cursor:pointer;padding:18px 20px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:14px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";font-size:1.4rem;color:var(--blue)}
details[open] summary::after{content:"–"}
details p{padding:0 20px 18px;color:var(--muted);margin:0}

/* Footer (matches index) */
footer{background:var(--ink);color:#9aa3bd;padding:50px 0 36px;font-size:.92rem}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
footer a{color:#c7cee0}footer a:hover{color:#fff}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.brand.light{color:#fff}