:root{
  --ink:#17141d; --muted:#5d5767; --bg:#fbf7f1; --card:#fff;
  --flame:#ff5a1f; --flame-dark:#d9420c; --sun:#ffc43d; --plum:#2e1f45; --lilac:#e9e0ff; --peach:#ffe6db;
  --line:#ece3d8; --r:20px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
     color:var(--ink);background:var(--bg);line-height:1.7;font-size:18px;-webkit-font-smoothing:antialiased}
a{color:var(--flame-dark)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.nav{display:flex;justify-content:space-between;align-items:center;padding:22px 0;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;letter-spacing:-.02em;text-decoration:none;color:var(--ink)}
.logo i{width:28px;height:28px;border-radius:50%;background:conic-gradient(from 210deg,var(--sun),var(--flame),var(--plum),var(--sun))}
.navlinks{display:flex;align-items:center;gap:22px}
.navlinks a.txt{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--flame);color:#fff;text-decoration:none;font-weight:700;
     padding:14px 24px;border-radius:999px;box-shadow:0 6px 0 var(--flame-dark);transition:transform .15s,box-shadow .15s;line-height:1.3}
.btn:hover{transform:translateY(2px);box-shadow:0 4px 0 var(--flame-dark)}
.btn.sm{padding:9px 16px;font-size:.92rem;box-shadow:0 4px 0 var(--flame-dark)}

/* article */
.crumbs{font-size:.88rem;color:var(--muted);margin:18px 0 26px}
.crumbs a{color:var(--muted)}
.ahead{max-width:780px;margin:0 auto 40px}
.kicker{display:inline-block;background:var(--plum);color:#fff;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:6px 12px;border-radius:999px;margin-bottom:18px}
.ahead h1{font-size:clamp(2rem,4.6vw,3.2rem);line-height:1.08;letter-spacing:-.03em;margin-bottom:18px}
.intro{font-size:1.2rem;color:var(--muted)}
.meta{display:flex;align-items:center;gap:12px;margin-top:24px;font-size:.9rem;color:var(--muted)}
.meta img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.meta b{color:var(--ink)}
article{max-width:780px;margin:0 auto}
article h2{font-size:clamp(1.45rem,3vw,1.9rem);line-height:1.2;letter-spacing:-.02em;margin:52px 0 14px}
article h3{font-size:1.2rem;margin:30px 0 8px}
article p{margin-bottom:18px}
article ul,article ol{margin:0 0 20px 22px}
article li{margin-bottom:8px}
article strong{color:var(--ink)}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 26px;margin:0 0 10px}
.toc b{display:block;margin-bottom:8px}
.toc ol{margin:0 0 0 20px}
.toc a{color:var(--ink)}
.tip{background:var(--peach);border-radius:16px;padding:20px 24px;margin:26px 0}
.tip b{color:var(--flame-dark)}
.quote{font-size:1.5rem;font-weight:800;line-height:1.25;letter-spacing:-.02em;border-left:6px solid var(--sun);padding:6px 0 6px 22px;margin:34px 0}
table{width:100%;border-collapse:collapse;margin:10px 0 26px;font-size:.95rem;background:#fff;border-radius:14px;overflow:hidden}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--plum);color:#fff;font-weight:700}
.tablewrap{overflow-x:auto}
.cta{background:var(--plum);color:#fff;border-radius:28px;padding:38px 34px;margin:48px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;width:200px;height:200px;right:-70px;top:-70px;border-radius:50%;
     background:radial-gradient(circle,var(--sun),var(--flame) 62%,transparent 63%)}
.cta > *{position:relative}
.cta h2,.cta h3{color:#fff;margin:0 0 10px;font-size:1.6rem;line-height:1.2;max-width:22em}
.cta p{color:#d6cde6;max-width:34em;margin-bottom:22px}
.cta small{display:block;margin-top:16px;color:#b8aecb;font-size:.85rem}
details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin-bottom:10px}
summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--flame);font-size:1.4rem;line-height:1;font-weight:800}
details[open] summary::after{content:"–"}
details p{color:var(--muted);margin:10px 0 0}
.more{max-width:780px;margin:60px auto 0}
.more h2{font-size:1.4rem;margin-bottom:14px}

/* blog index */
.bhead{padding:30px 0 40px;max-width:760px}
.bhead h1{font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.05;letter-spacing:-.03em;margin-bottom:14px}
.bhead p{font-size:1.15rem;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.post{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.post:hover{transform:translateY(-4px);box-shadow:0 14px 30px -18px rgba(46,31,69,.35)}
.post .tag{display:inline-block;font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;margin-bottom:14px}
.t1{background:var(--peach);color:var(--flame-dark)}.t2{background:var(--lilac);color:var(--plum)}.t3{background:#fff1c9;color:#7a5600}
.post h2{font-size:1.35rem;line-height:1.2;letter-spacing:-.02em;margin-bottom:10px}
.post p{color:var(--muted);font-size:.98rem;margin-bottom:14px}
.post span.read{font-weight:700;color:var(--flame-dark);font-size:.95rem}

footer{padding:40px 0;color:var(--muted);font-size:.9rem;margin-top:60px;border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:var(--muted);margin-left:20px}
@media (max-width:760px){
  .cards{grid-template-columns:1fr}
  .navlinks a.txt{display:none}
  body{font-size:17px}
  .cta{padding:30px 22px}
  footer a{margin:0 16px 0 0}
}