:root{--isn-primary:#0A2A66;--isn-accent:#F4B400;--isn-reader-width:1100px;--isn-border:#e5e7eb;--isn-bg:#fff;--isn-text:#111827}
*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--isn-bg);color:var(--isn-text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans Telugu",sans-serif}
a{color:inherit}.isn-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--isn-border)}
.isn-header-inner{max-width:var(--isn-reader-width);margin:auto;min-height:58px;padding:8px 14px;display:flex;align-items:center;justify-content:space-between}.isn-brand{font-weight:800;font-size:20px;text-decoration:none}.custom-logo{max-height:40px;width:auto}.isn-icon-btn{border:0;background:transparent;font-size:25px;padding:7px;cursor:pointer}
.isn-main{width:100%;max-width:var(--isn-reader-width);margin:0 auto}.isn-page,.isn-status{padding:25px 16px}.isn-page img{max-width:100%;height:auto}.isn-list{padding:20px 16px}.isn-list article{padding:18px 0;border-bottom:1px solid var(--isn-border)}
.isn-bottom{position:fixed;left:0;right:0;bottom:0;z-index:1000;display:flex;justify-content:center;gap:30px;padding:9px;background:rgba(255,255,255,.96);border-top:1px solid var(--isn-border);font-size:13px}.isn-bottom a{text-decoration:none;color:#6b7280}.isn-bottom a.active{color:var(--isn-primary);font-weight:800}
body.isn-dark{--isn-bg:#0b1220;--isn-text:#f8fafc;--isn-border:#263246}.isn-reader-fullscreen{position:fixed!important;inset:0!important;z-index:99999!important;background:var(--isn-bg)!important;overflow:auto!important}
@media(min-width:900px){.isn-header-inner{padding-left:24px;padding-right:24px}}