:root{--ink:#0b0b0f;--mist:#f5f5f7;--line:#e6e6e6;--accent:#0071e3;--muted:#6b7280;--radius:16px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
img{max-width:100%;display:block;border-radius:var(--radius)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
header.site{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:700;font-size:20px;letter-spacing:-.5px;color:var(--ink)}
.nav-links{display:none;gap:22px;align-items:center;font-size:14px}
.nav-links a{color:#374151}
.nav-links a:hover{color:var(--ink)}
.hamburger{display:inline-block;background:none;border:0;font-size:22px;cursor:pointer}
.mobile-menu{display:none;flex-direction:column;padding:12px 20px;border-top:1px solid var(--line);background:#fff}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:10px 0;color:#374151;border-bottom:1px solid var(--mist)}
@media(min-width:820px){.nav-links{display:flex}.hamburger{display:none}}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(28px,5vw,52px);line-height:1.1;letter-spacing:-1.5px;margin:0 0 16px}
.hero p{font-size:clamp(15px,2.2vw,19px);color:var(--muted);max-width:640px;margin:0 auto 28px}
.searchbar{display:flex;max-width:560px;margin:0 auto;gap:8px}
.searchbar input{flex:1;padding:14px 18px;border:1px solid var(--line);border-radius:999px;font-size:15px;outline:none}
.searchbar input:focus{border-color:var(--accent)}
.btn{display:inline-block;padding:12px 22px;border-radius:999px;background:var(--ink);color:#fff;border:0;font-weight:600;cursor:pointer;font-size:15px}
.btn:hover{opacity:.9}
.btn.accent{background:var(--accent)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
section{padding:48px 0}
h2.section-title{font-size:clamp(22px,3vw,30px);letter-spacing:-.5px;margin:0 0 24px}
.grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.grid{grid-template-columns:repeat(3,1fr)}}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,0,0,.06)}
.card .thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#eaf1fb,#f5f5f7);display:flex;align-items:center;justify-content:center;font-size:40px}
.card .body{padding:18px;display:flex;flex-direction:column;flex:1}
.tag{font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.5px}
.card h3{font-size:18px;margin:8px 0 6px;line-height:1.3}
.card p{font-size:14px;color:var(--muted);margin:0 0 12px;flex:1}
.meta{font-size:12px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.readmore{font-weight:600;font-size:14px}
.banner{background:linear-gradient(135deg,#f0f7ff,#ffffff);border:1px solid var(--line);border-radius:var(--radius);padding:32px;text-align:center;max-width:970px;margin:0 auto;min-height:250px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:14px}
.banner h3{margin:0;font-size:clamp(20px,3vw,26px);letter-spacing:-.5px}
.banner p{margin:0;color:var(--muted);max-width:520px}
@media(max-width:960px){.banner{min-height:auto;padding:24px 18px}}
.cats{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(min-width:768px){.cats{grid-template-columns:repeat(3,1fr)}}
.cat-card{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--mist);font-weight:600;color:var(--ink)}
.cat-card span{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:4px}
.newsletter{background:var(--ink);color:#fff;border-radius:var(--radius);padding:40px;text-align:center}
.newsletter h2{margin:0 0 10px;letter-spacing:-.5px}
.newsletter p{color:#c7c7cf;margin:0 0 20px;font-size:14px}
.newsletter form{display:flex;gap:8px;max-width:480px;margin:0 auto}
.newsletter input{flex:1;padding:12px 16px;border-radius:999px;border:0;font-size:15px}
.notice{font-size:12px;color:#9a9aa8;margin-top:12px}
.form-msg{font-size:14px;margin-top:12px;min-height:20px}
.form-msg.ok{color:#22c55e}.form-msg.err{color:#ef4444}
.article-wrap{max-width:760px;margin:0 auto;padding:40px 20px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.article-wrap h1{font-size:clamp(28px,4.5vw,42px);letter-spacing:-1px;line-height:1.15;margin:8px 0 16px}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:24px}
.toc{background:var(--mist);border-radius:12px;padding:18px 20px;margin:24px 0;font-size:14px}
.toc ul{margin:8px 0 0;padding-left:20px}
.article-body h2{font-size:24px;letter-spacing:-.5px;margin:36px 0 12px}
.article-body h3{font-size:19px;margin:28px 0 10px}
.article-body ul,.article-body ol{padding-left:22px}
.article-body li{margin:6px 0}
.article-body blockquote{border-left:4px solid var(--line);margin:20px 0;padding:8px 16px;color:var(--muted);font-style:italic}
.disclaimer-box{background:#fff8e6;border:1px solid #f1e2b6;border-radius:12px;padding:16px;font-size:13px;color:#6b5a1e;margin:28px 0}
.share{display:flex;gap:10px;margin:28px 0;flex-wrap:wrap}
.share a{padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--ink)}
footer.site{background:var(--mist);border-top:1px solid var(--line);padding:44px 0 30px;margin-top:40px}
.foot-grid{display:grid;gap:26px;grid-template-columns:1fr}
@media(min-width:700px){.foot-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
footer h4{font-size:13px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 12px}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin:6px 0;font-size:14px}
footer li a{color:#374151}
footer li a:hover{color:var(--ink)}
.foot-bottom{font-size:12px;color:var(--muted);margin-top:30px;border-top:1px solid var(--line);padding-top:20px;text-align:center}
.center{text-align:center}
.page{padding:40px 0}
.page h1{font-size:clamp(26px,4vw,38px);letter-spacing:-1px;margin:0 0 20px}
.prose p{margin:14px 0}
.prose h2{margin:28px 0 10px;font-size:22px}
.prose h3{margin:22px 0 8px;font-size:18px}
.prose ul,.prose ol{padding-left:22px}