/* Base */
:root{--ink:#222;--muted:#556;--brand:#0f766e;--brand-ink:#0b5c58}
*{box-sizing:border-box} html,body{margin:0;padding:0;font:16px/1.6 system-ui,Segoe UI,Roboto,Helvetica,Arial}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:960px;margin:auto;padding:18px}
.center{text-align:center}

/* Header/Nav */
header{border-bottom:1px solid #eee}
.navbar{display:flex;gap:20px;align-items:center;justify-content:center;padding:10px 0}
.brand-link{display:flex;gap:10px;align-items:center;color:inherit}
.brand-link .logo{height:36px;width:auto;border-radius:6px;vertical-align:middle}
nav a{padding:8px 12px;border-radius:12px}
nav a.active{background:#eefaf8;color:var(--brand-ink);text-decoration:none}

/* Content */
h1{font-size:2.4rem;line-height:1.2;margin:22px 0 12px;color:var(--ink)}
p{color:#333;margin:10px 0}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:12px 16px;border-radius:999px}
.btn:hover{background:var(--brand-ink)}

/* Footer */
footer{border-top:1px solid #eee;margin-top:40px}
.small{font-size:.95rem;color:#555}
/* JF blog list */
.posts{display:grid;gap:18px}
@media(min-width:720px){.posts{grid-template-columns:repeat(3,1fr)}}
.post-card{border:1px solid #eee;border-radius:14px;overflow:hidden;background:#fff}
.post-card a{display:block;color:inherit;text-decoration:none}
.post-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.post-body{padding:12px 14px}
.post-body h3{margin:8px 0 6px;font-size:1.05rem;color:#111}
.post-body p{margin:0;color:#555;font-size:.95rem}
/* JF post hero */
.post-hero-wrap{margin:14px 0 18px}
.post-hero{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;display:block}
/* JF post hero */
.post-hero-wrap{margin:14px 0 18px}
.post-hero{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;display:block}
/* JF post hero */
.post-hero-wrap{margin:14px 0 18px}
.post-hero{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;display:block}
/* JF contact form */
.form-grid{display:grid;gap:10px;margin:10px 0}
@media(min-width:640px){.two{grid-template-columns:1fr 1fr}}
label{font-weight:600}
input,select,textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px}
button[type=button]{margin-top:8px}
.notice{color:#666;font-size:.95rem}
address{font-style:normal;color:#444}
footer{border-top:1px solid #eee;margin-top:40px}
.center{text-align:center}
/* SIDEV3-BG-20251106 */
body{background:linear-gradient(180deg,#f8fafc 0,#ffffff 280px);}
.site-header{backdrop-filter:saturate(120%);}
/* SIDEV3-BG-END */