/* Roori eBooks. Inter is self-hosted (SIL OFL 1.1). No third-party requests, no cookies. */
@font-face{font-family:"Inter";font-weight:400;font-display:swap;src:url(/assets/fonts/inter-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-weight:600;font-display:swap;src:url(/assets/fonts/inter-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-weight:700;font-display:swap;src:url(/assets/fonts/inter-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-weight:800;font-display:swap;src:url(/assets/fonts/inter-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-weight:400;font-display:swap;src:url(/assets/fonts/inter-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Inter";font-weight:700;font-display:swap;src:url(/assets/fonts/inter-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Inter";font-weight:800;font-display:swap;src:url(/assets/fonts/inter-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{--blue:#2457f5;--violet:#6d28d9;--cyan:#0891b2;--cyan-l:#67e8f9;--ink:#0b1020;--navy:#070b1c;--text:#1b2234;--muted:#556078;--line:#dfe5f3;--tint:#f4f7ff;--amber:#b45309;--green:#047857;--r:14px;--w:1120px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 17px/1.65 "Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);background:#fff}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:var(--ink);padding:10px 14px;z-index:100;border-radius:8px}
.skip:focus{left:8px}
.wrap{max-width:var(--w);margin:0 auto;padding:0 22px}
h1,h2,h3{color:var(--ink);line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.55rem,3.2vw,2.3rem);font-weight:800;margin-top:0}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
.lead{font-size:1.2rem;color:var(--muted)}
.kicker{display:inline-block;font-weight:700;font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--violet)}
section{padding:72px 0}
.alt{background:var(--tint)}

/* header */
header.site{position:sticky;top:0;z-index:50;background:rgba(7,11,28,.92);backdrop-filter:blur(10px);border-bottom:1px solid #1d2748}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;letter-spacing:-.01em}
.brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--violet) 60%,var(--cyan-l))}
nav.main{display:flex;gap:6px;align-items:center}
nav.main a{color:#dfe6ff;text-decoration:none;padding:8px 12px;border-radius:8px;font-weight:600;font-size:.95rem}
nav.main a:hover{background:#151d3a;color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 1rem "Inter",sans-serif;padding:14px 26px;border-radius:12px;text-decoration:none;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;box-shadow:0 10px 30px rgba(36,87,245,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(109,40,217,.45)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid #3a4a8f}
.btn-ghost:hover{background:#151d3a}
.btn-sm{padding:9px 16px;font-size:.92rem;border-radius:10px}

/* hero */
.hero{background:radial-gradient(900px 500px at 85% 20%,rgba(109,40,217,.45),transparent 60%),radial-gradient(700px 480px at 10% 90%,rgba(36,87,245,.4),transparent 60%),var(--navy);color:#fff;padding:72px 0 80px}
.hero h1{color:#fff}
.hero .kicker{color:var(--cyan-l)}
.hero .lead{color:#c9d3f5}
.hero .grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.grad{background:linear-gradient(90deg,#7aa2ff,#c4a1ff,var(--cyan-l));-webkit-background-clip:text;background-clip:text;color:transparent}
.price{display:flex;align-items:baseline;gap:14px;margin:22px 0 6px}
.price .now{font-size:3rem;font-weight:800;color:#fff;letter-spacing:-.03em}
.price .was{font-size:1.4rem;color:#8f9bc4;text-decoration:line-through}
.price .tag{font-size:.8rem;font-weight:700;letter-spacing:.08em;color:var(--cyan-l);border:1px solid var(--cyan-l);padding:3px 10px;border-radius:99px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}
.ticks{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:8px;color:#dfe6ff}
.ticks li{padding-left:28px;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:.5em;width:16px;height:16px;border-radius:50%;background:var(--cyan-l);box-shadow:0 0 0 4px rgba(103,232,249,.18)}
.cover{position:relative;max-width:340px;margin:0 auto}
.cover img{border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.08);transform:rotate(2deg)}
.fine{font-size:.85rem;color:#8f9bc4}

/* cards and grids */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:0 4px 18px rgba(11,16,32,.04)}
.card h3{margin-top:.2em}
.card .ico{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--violet));margin-bottom:14px}
.card.alt2 .ico{background:linear-gradient(135deg,var(--violet),var(--cyan))}
.card.alt3 .ico{background:linear-gradient(135deg,var(--cyan),var(--blue))}
.callout{border-left:5px solid var(--blue);background:var(--tint);padding:18px 22px;border-radius:10px;margin:22px 0}
.callout.warn{border-color:var(--amber);background:#fff8ee}
.callout.ok{border-color:var(--green);background:#effaf5}
.callout strong:first-child{display:block;margin-bottom:4px}

/* table */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:.95rem}
th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:700}
td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
tbody tr:nth-child(even) td{background:var(--tint)}
.yes{color:var(--green);font-weight:700}.no{color:var(--violet);font-weight:700}

/* look inside */
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.shot{margin:0}
.shot img{border-radius:10px;border:1px solid var(--line);box-shadow:0 8px 28px rgba(11,16,32,.12)}
.shot figcaption{font-size:.88rem;color:var(--muted);margin-top:8px}

/* accordion */
details{border:1px solid var(--line);border-radius:12px;background:#fff;margin:10px 0;overflow:hidden}
summary{cursor:pointer;padding:16px 20px;font-weight:700;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--blue)}
details[open] summary::after{content:"\2212"}
details .in{padding:0 20px 18px;color:var(--text)}
details ol,details ul{margin:.2em 0 0;padding-left:1.3em}

/* code */
pre{background:#0d1326;color:#e6ebff;border-radius:12px;padding:18px 20px;overflow-x:auto;font:400 .86rem/1.6 ui-monospace,"Cascadia Code",Consolas,monospace;border:1px solid #1d2748}
code{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.9em;background:#eef2ff;color:#3a2bb0;padding:.05em .35em;border-radius:5px}
pre code{background:none;color:inherit;padding:0}

/* breadcrumbs, faq, footer */
.crumbs{font-size:.9rem;color:#8f9bc4;margin-bottom:18px}.crumbs a{color:#c9d3f5}
.final{background:linear-gradient(135deg,#070b1c,#14246f 55%,#5b21b6);color:#fff;text-align:center}
.final h2{color:#fff}.final p{color:#c9d3f5}
footer.site{background:var(--navy);color:#aab4d6;padding:48px 0 90px;font-size:.93rem}
footer.site a{color:#dfe6ff;text-decoration:none}footer.site a:hover{text-decoration:underline}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
footer h4{color:#fff;margin:0 0 10px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.legal{max-width:820px;padding:56px 22px 80px;margin:0 auto}
.legal h1{font-size:2.2rem;margin-bottom:.3em}.legal h2{font-size:1.3rem;margin-top:1.8em}
.legal .meta{color:var(--muted)}
.sticky-buy{display:none}

@media(max-width:860px){
 .hero .grid,.grid2{grid-template-columns:1fr}
 .grid3,.shots{grid-template-columns:1fr 1fr}
 footer .cols{grid-template-columns:1fr}
 section{padding:52px 0}
 nav.main a.hide-m{display:none}
 .cover{max-width:260px}
 .sticky-buy{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(7,11,28,.96);border-top:1px solid #1d2748;padding:10px 16px;gap:12px;align-items:center;justify-content:space-between;color:#fff}
 .sticky-buy .p{font-weight:800;font-size:1.2rem}.sticky-buy .p s{font-weight:400;color:#8f9bc4;font-size:.95rem;margin-left:6px}
}
@media(max-width:560px){.grid3,.shots{grid-template-columns:1fr}.price .now{font-size:2.5rem}body{font-size:16.5px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* additions: promo bar, offer line, blog */
.promo-bar{background:linear-gradient(90deg,#2457f5,#6d28d9);color:#fff;font-size:.9rem;text-align:center;padding:8px 0;font-weight:500}
.promo-bar a{color:#fff;font-weight:700}
.offer-line{color:#c9d3f5;margin:0 0 6px}
.offer-line strong{color:var(--cyan-l)}
.price .tag{background:var(--cyan-l);color:#06222b;border-color:var(--cyan-l)}
.sticky-buy .off{background:#67e8f9;color:#06222b;font-size:.7rem;font-weight:800;padding:2px 7px;border-radius:99px;margin-left:6px;vertical-align:middle}
.postgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.post-card{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:var(--r);padding:24px;background:#fff;box-shadow:0 4px 18px rgba(11,16,32,.04);transition:transform .15s,box-shadow .15s}
.post-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(36,87,245,.15)}
.post-card h3{margin:.3em 0 .4em;font-size:1.25rem}
.post-card p{color:var(--muted);margin:0}
.pill{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--violet);background:#f1eaff;padding:3px 10px;border-radius:99px}
article.post{max-width:780px;margin:0 auto;padding:48px 22px 24px}
article.post h1{font-size:clamp(1.9rem,4.4vw,2.8rem)}
article.post h2{font-size:1.55rem;margin-top:1.8em}
article.post h3{margin-top:1.4em}
article.post .meta{color:var(--muted);font-size:.92rem;margin-bottom:1.4em}
article.post ul,article.post ol{padding-left:1.4em}article.post li{margin:.35em 0}
article.post table{min-width:0}
.cta-box{background:linear-gradient(135deg,#070b1c,#14246f 60%,#5b21b6);color:#fff;border-radius:16px;padding:28px;margin:36px 0;text-align:center}
.cta-box h3{color:#fff;margin-top:0}.cta-box p{color:#c9d3f5}
.cta-box .now{font-size:2rem;font-weight:800;color:#fff}.cta-box s{color:#8f9bc4}
.cta-box .tag2{background:#67e8f9;color:#06222b;font-weight:800;font-size:.75rem;padding:3px 10px;border-radius:99px;margin-left:8px;vertical-align:middle}
.related{border-top:1px solid var(--line);margin-top:36px;padding-top:20px}
.sheet{max-width:980px;margin:0 auto;padding:40px 22px 60px}
.sheet .grid2>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.sheet h2{font-size:1.2rem;margin-bottom:.4em}
@media(max-width:860px){.postgrid{grid-template-columns:1fr}}
@media print{.promo-bar,header.site,footer.site,.sticky-buy,.cta-box{display:none}.sheet{padding:0}}

/* Devanagari (Hindi guide). Noto Sans Devanagari, SIL OFL 1.1 */
@font-face{font-family:"Noto Sans Devanagari";font-weight:400;font-display:swap;src:url(/assets/fonts/noto-sans-devanagari-devanagari-400-normal.woff2) format("woff2");unicode-range:U+0900-097F,U+1CD0-1CF9,U+200C-200D,U+20A8,U+20B9,U+25CC,U+A830-A839,U+A8E0-A8FF}
@font-face{font-family:"Noto Sans Devanagari";font-weight:700;font-display:swap;src:url(/assets/fonts/noto-sans-devanagari-devanagari-700-normal.woff2) format("woff2");unicode-range:U+0900-097F,U+1CD0-1CF9,U+200C-200D,U+20A8,U+20B9,U+25CC,U+A830-A839,U+A8E0-A8FF}
body{font-family:"Inter","Noto Sans Devanagari",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
h1,h2,h3{font-family:"Inter","Noto Sans Devanagari",system-ui,sans-serif}
html[lang="hi"] article.post{line-height:1.85}
.grid2>*,.grid3>*,.hero .grid>*{min-width:0}

/* icons */
.logo{display:inline-flex;background:none!important;width:30px;height:30px}.logo svg{display:block;border-radius:8px}
.ico{display:flex;align-items:center;justify-content:center;color:#fff}
.ico svg{width:24px;height:24px}
.ticks li::before{content:"";width:18px;height:18px;border-radius:50%;box-shadow:none;top:.38em;background:var(--cyan-l) center/12px no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23062a33' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E")}
.btn-primary[href*="rzp.io"]::before{content:"";width:18px;height:18px;background:currentColor;-webkit-mask:center/contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'/%3E%3Cpath d='M7 10l5 5 5-5'/%3E%3Cpath d='M12 15V3'/%3E%3C/svg%3E");mask:center/contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'/%3E%3Cpath d='M7 10l5 5 5-5'/%3E%3Cpath d='M12 15V3'/%3E%3C/svg%3E")}
.btn-sm[href*="rzp.io"]::before{width:15px;height:15px}
.strip{background:#fff;border-bottom:1px solid var(--line);padding:0}
.strip ul{list-style:none;margin:0;padding:18px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.strip li{display:flex;align-items:center;gap:10px;font-weight:600;font-size:.93rem;color:var(--ink)}
.strip li svg{flex:none;width:34px;height:34px;padding:7px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet))}
.ih{display:flex;align-items:center;gap:10px}
h2.ih svg{flex:none;width:34px;height:34px;padding:7px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet))}
strong.ih{display:flex!important;gap:8px}strong.ih svg{flex:none;color:var(--green)}
.promo-bar .wrap::before{content:"";display:inline-block;width:15px;height:15px;margin-right:8px;vertical-align:-2px;background:#fff;-webkit-mask:center/contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M13 2L3 14h9l-1 8 10-12h-9l1-8z'/%3E%3C/svg%3E");mask:center/contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M13 2L3 14h9l-1 8 10-12h-9l1-8z'/%3E%3C/svg%3E")}
@media(max-width:860px){.strip ul{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.strip ul{grid-template-columns:1fr}}