*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#ffffff;--soft:#f5f8fd;--surface:#ffffff;--ink:#0f1b34;--ink-2:#40506b;--mute:#8593ad;--line:#e9eef7;--blue:#2563eb;--blue-d:#1d4ed8;--blue-soft:#eef4ff;--head:rgba(255,255,255,.86);--shadow:0 12px 40px rgba(20,40,90,.08);--fs:'Poppins',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
[data-theme="dark"]{--bg:#0b1220;--soft:#0f1a30;--surface:#111d34;--ink:#eef3fb;--ink-2:#bcc8de;--mute:#7d8aa6;--line:#20304f;--blue:#4f8bff;--blue-d:#3b82f6;--blue-soft:#16244a;--head:rgba(11,18,32,.82);--shadow:0 14px 44px rgba(0,0,0,.4)}
html{scroll-behavior:smooth}
body{font-family:var(--fs);color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
a{color:var(--blue);text-decoration:none} a:hover{text-decoration:underline}
.wrap{max-width:800px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:20;background:var(--head);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:14px;height:66px;max-width:1000px;margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:800;letter-spacing:-.02em;font-size:19px}
.brand .wm span{color:var(--blue)} .logo{width:48px;height:30px;object-fit:cover;object-position:center}
.nav .sp{margin-left:auto}
.back{font-size:14px;font-weight:600;color:var(--mute)} .back:hover{color:var(--blue);text-decoration:none}
.tgl{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:flex;align-items:center;justify-content:center;cursor:pointer}
.tgl:hover{border-color:var(--blue)} .tgl .moon{display:none}
[data-theme="dark"] .tgl .sun{display:none}[data-theme="dark"] .tgl .moon{display:block}
main{padding:52px 0 80px}
.eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
h1{font-size:clamp(30px,4.6vw,44px);font-weight:800;letter-spacing:-.02em;margin-bottom:12px;color:var(--ink)}
.sub{color:var(--ink-2);font-size:17px;max-width:60ch;margin-bottom:34px}
b,strong{color:var(--ink);font-weight:600}
/* listing */
.alist{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.acard{display:block;background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .16s,box-shadow .16s}
.acard:hover{transform:translateY(-4px);box-shadow:var(--shadow);text-decoration:none}
.athumb{height:158px;position:relative;display:flex;align-items:center;justify-content:center;background:linear-gradient(125deg,var(--a,#2563eb),var(--b,#12b3ab))}
.athumb::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1.5px,transparent 1.6px);background-size:20px 20px;opacity:.5}
.athumb svg{width:52px;height:52px;color:#fff;position:relative;z-index:1}
.abody{padding:22px 24px 26px}
.meta{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--mute);margin-bottom:11px}
.tag{background:var(--blue-soft);color:var(--blue);font-weight:600;padding:3px 11px;border-radius:999px;font-size:12px}
.acard h3{font-size:17.5px;color:var(--ink);line-height:1.3;margin-bottom:8px}
.acard p{color:var(--ink-2);font-size:14px}
.acard .more{color:var(--blue);font-size:13.5px;font-weight:600;margin-top:14px;display:inline-block}
/* article page */
.crumb{font-size:13.5px;font-weight:600;color:var(--mute);display:inline-block;margin-bottom:18px} .crumb:hover{color:var(--blue);text-decoration:none}
.phero{height:clamp(160px,26vw,220px);border-radius:22px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;margin:0 0 26px;background:linear-gradient(125deg,var(--a,#2563eb),var(--b,#12b3ab))}
.phero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1.6px,transparent 1.7px);background-size:22px 22px;opacity:.55}
.phero svg{width:clamp(64px,10vw,90px);height:clamp(64px,10vw,90px);color:#fff;opacity:.96;position:relative;z-index:1}
.body{margin-top:8px}
.body h2{font-size:clamp(21px,2.8vw,26px);font-weight:800;letter-spacing:-.015em;margin:34px 0 8px;color:var(--ink)}
.body h3{font-size:19px;font-weight:700;margin:28px 0 8px;color:var(--ink)}
.body p,.body li{color:var(--ink-2);font-size:16px} .body p{margin:12px 0}
.body ul{margin:12px 0 12px 22px;display:grid;gap:8px}
.body .lead{font-size:17.5px;color:var(--ink-2)}
.readnext{margin-top:48px;border-top:1px solid var(--line);padding-top:30px}
.readnext h4{font-size:13px;text-transform:uppercase;letter-spacing:.12em;color:var(--mute);font-weight:700;margin-bottom:16px}
.rngrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.rncard{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;transition:border-color .15s,transform .15s}
.rncard:hover{border-color:var(--blue);transform:translateY(-2px);text-decoration:none}
.rncard .rt{font-size:12px;font-weight:600;color:var(--blue);margin-bottom:5px}
.rncard b{display:block;font-size:14.5px;color:var(--ink);font-weight:600;line-height:1.35}
footer{border-top:1px solid var(--line);padding:30px 0;color:var(--mute);font-size:13px;text-align:center}
footer a{color:var(--mute)} footer a:hover{color:var(--blue)}
@media(max-width:640px){.alist,.rngrid{grid-template-columns:1fr}.back{display:none}}