:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light;--ink:#16324e;--muted:#496174;--line:#dbe5ee;--bg:#f5f8fc;--surface:#fff;--accent:#086d77;--accent-hover:#07545c;--light-accent:#e8f6f6;--navy:#12395c;--shadow:0 12px 35px rgba(19,54,86,.06);font-size:16px}
@media(prefers-color-scheme:dark){:root:not([data-theme]){color-scheme:dark;--ink:#eef5fc;--muted:#bdcad8;--line:#344a60;--bg:#101d2c;--surface:#182b3d;--accent:#62d4cb;--accent-hover:#8af0e2;--light-accent:#233e49;--navy:#10283b;--shadow:none}}html[data-theme="dark"]{color-scheme:dark;--ink:#edf5fc;--muted:#c0cedc;--line:#34495e;--bg:#101d2c;--surface:#182b3d;--accent:#66d8cf;--accent-hover:#9cf5ee;--light-accent:#223f49;--navy:#10283b;--shadow:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);line-height:1.6;overflow-wrap:anywhere}a{color:var(--accent);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button,input{font:inherit}button,a,summary{touch-action:manipulation}button{cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.23;letter-spacing:-.025em}h1{font-size:clamp(1.9rem,3.8vw,3.45rem);max-width:22ch}h2{font-size:clamp(1.28rem,2.1vw,1.95rem)}h3{font-size:1.14rem}:focus-visible{outline:3px solid #c58410;outline-offset:3px}.container{width:min(100% - 2rem,1280px);margin-inline:auto}.skip-link{position:absolute;left:-9999px;background:var(--surface);z-index:50;padding:.8rem}.skip-link:focus{left:1rem;top:1rem}
.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:1.5rem}.brand{display:inline-flex;gap:.75rem;align-items:center;text-decoration:none;color:var(--ink);flex-shrink:0}.brand strong{display:block;letter-spacing:-.035em;font-size:1.14rem}.brand small{display:block;font-size:.7rem;color:var(--muted);letter-spacing:.015em}.brand-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:13px;background:var(--navy);font-size:1.7rem;color:#fff}.desktop-nav{display:flex;gap:1.65rem}.desktop-nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.93rem}.desktop-nav a:hover{color:var(--accent)}.header-controls{display:flex;gap:.5rem;align-items:center}.theme-button{width:45px;height:45px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink)}.mobile-menu{display:none;position:relative}.mobile-menu summary{list-style:none;border:1px solid var(--line);border-radius:12px;padding:.55rem .7rem;min-height:44px;cursor:pointer}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{position:absolute;right:0;top:3rem;z-index:10;min-width:195px;display:flex;flex-direction:column;background:var(--surface);padding:.5rem;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.mobile-menu nav a{padding:.7rem;color:var(--ink);text-decoration:none}
.main-content{padding-block:2rem 4rem;min-height:60vh}.hero{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(275px,.75fr);gap:clamp(1.3rem,5vw,5rem);padding:clamp(1rem,4vw,3rem) 0 2rem;align-items:center}.eyebrow{font-weight:800;color:var(--accent);font-size:.71rem;letter-spacing:.14em}.hero h1{margin:.8rem 0 1.2rem}.hero-copy>p,.lead{font-size:clamp(1rem,1.3vw,1.14rem);color:var(--muted);max-width:70ch}.hero-panel{background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:clamp(1.2rem,3vw,2.25rem)}.hero-panel-icon{display:grid;place-items:center;font-size:1.8rem;width:50px;height:50px;border-radius:14px;color:var(--accent);background:var(--light-accent);margin-bottom:1.3rem}.hero-panel h2{font-size:1.42rem}.hero-panel p{margin:.5rem 0}.fine-print,.hero-small,.subtle{color:var(--muted);font-size:.84rem}.hero-small{margin-top:1rem}.searchbox{background:var(--surface);border-radius:16px;border:1px solid var(--line);padding:1.1rem;box-shadow:var(--shadow);max-width:720px}.searchbox label{font-weight:700;font-size:.93rem;display:block;margin-bottom:.5rem}.search-row{display:flex;gap:.65rem}.search-row input{flex:1;min-width:0;height:51px;border:1px solid #92a9b9;border-radius:11px;padding:0 1rem;background:var(--surface);color:var(--ink);font-size:1rem}.search-row button{background:var(--accent);color:var(--bg);border:0;padding:0 1.4rem;min-height:48px;border-radius:11px;font-weight:800}.search-row button:hover{background:var(--accent-hover)}html[data-theme="dark"] .search-row button{color:#092c36}.search-page{max-width:780px;margin-block:1.4rem}.search-page .fine-print{margin:.8rem 0 0}
.section{margin-top:clamp(2.8rem,6vw,5.5rem)}.section-header{margin-bottom:1.3rem}.section-header p{color:var(--muted)}.cards{display:grid;gap:1.1rem}.cards.three{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card,.note{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:1.5rem;box-shadow:var(--shadow)}.feature-card{text-decoration:none;color:var(--ink);transition:transform .15s ease,border-color .15s ease}.feature-card:hover{transform:translateY(-2px);border-color:var(--accent)}.feature-card p{color:var(--muted)}.feature-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--light-accent);color:var(--accent);font-size:1.5rem;margin-bottom:1.2rem}.more,.text-link{color:var(--accent);font-weight:800}.split{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center}.breadcrumbs{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:.81rem;margin-bottom:1.9rem}.breadcrumbs a{color:var(--muted)}.page-header{max-width:850px;margin-bottom:1.6rem}.page-header h1{margin:.65rem 0 .9rem}
.record-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:2rem;align-items:start}.record-header h1{font-size:clamp(1.7rem,3.3vw,2.6rem);max-width:32ch;margin:.6rem 0}.answer-card{margin:1.6rem 0;border:1px solid #83bdc1;border-left:5px solid var(--accent);border-radius:17px;padding:clamp(1rem,2.9vw,1.8rem);background:var(--surface);box-shadow:var(--shadow)}.answer-top{display:flex;align-items:center;justify-content:space-between;gap:1rem}.answer-top h2{margin:0;font-size:1.06rem}.status-pill{font-size:.75rem;font-weight:700;border-radius:100px;padding:.26rem .65rem;background:var(--light-accent);color:var(--accent)}.copy-row{display:flex;align-items:center;gap:1rem;justify-content:space-between;flex-wrap:wrap}.answer-code{font-size:clamp(1.8rem,4.2vw,2.6rem);letter-spacing:.02em}.secondary-button{padding:.6rem 1rem;border-radius:10px;border:1px solid var(--accent);background:var(--surface);color:var(--accent);font-weight:700;min-height:44px}.ifsc-answer{border-top:1px solid var(--line);padding-top:1rem;margin-top:.9rem}.ifsc-answer>span{display:block;color:var(--muted);font-size:.87rem}.ifsc-answer strong{font-size:1.22rem}.info-panel,.aside-box{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:clamp(1rem,2.5vw,1.7rem);margin-bottom:1.3rem}.info-panel h2,.aside-box h2{font-size:1.3rem}.facts{margin:0}.facts>div{display:grid;grid-template-columns:minmax(110px,30%) minmax(0,1fr);gap:1rem;padding:.85rem 0;border-bottom:1px solid var(--line)}.facts>div:last-child{border:0}.facts dt{color:var(--muted);font-size:.9rem}.facts dd{margin:0;font-weight:600;min-width:0}.facts dd small{display:block;font-size:.83rem;font-weight:400;color:var(--muted);margin-top:.2rem}.sidebar{position:sticky;top:1rem}.aside-box a{display:block;text-decoration:none;border-top:1px solid var(--line);padding:.85rem 0;font-size:.9rem}.notice{padding:1rem;background:var(--light-accent);border-radius:12px}.ad-region{min-height:354px;margin:2.5rem 0;min-width:0;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:0 0 12px;position:relative}.ad-label{display:block;height:32px;line-height:32px;text-align:center;font-size:.75rem;color:var(--muted)}.ad-slot{min-width:0}.ad-multiplex{min-height:634px}.ad-multiplex .ad-slot{min-height:588px}@media(min-width:768px){.ad-multiplex{min-height:454px}.ad-multiplex .ad-slot{min-height:408px}}amp-ad{max-width:100%}
.chips{display:flex;flex-wrap:wrap;gap:.65rem;margin:1.3rem 0}.chips a{display:inline-flex;align-items:center;text-decoration:none;border:1px solid var(--line);border-radius:100px;background:var(--surface);padding:.48rem .8rem;font-size:.85rem}.listing{background:var(--surface);border-radius:16px;border:1px solid var(--line);overflow:hidden;margin:1.3rem 0}.list-heading{padding:1.3rem;border-bottom:1px solid var(--line)}.list-heading h2{margin:0 0 .25rem}.list-item{padding:.88rem 1.2rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;text-decoration:none;border-bottom:1px solid var(--line)}.list-item:last-child{border:0}.list-item strong{color:var(--ink);display:block}.list-item span{color:var(--muted);display:block;font-size:.88rem}.list-item:hover{background:var(--light-accent)}.pager{display:flex;justify-content:space-between;gap:1rem}.pager a{display:inline-block;padding:.65rem .9rem;background:var(--surface);border:1px solid var(--line);border-radius:10px}.source-footer{font-size:.86rem;color:var(--muted)}.search-results{max-width:800px;min-height:180px}.search-results .list-item{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin:.6rem 0}.article{max-width:780px}.article>section{margin:2rem 0}.footer{background:var(--surface);border-top:1px solid var(--line);padding:2.5rem 0 1.5rem}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:2rem}.footer p,.footer-small{color:var(--muted);font-size:.85rem;max-width:57ch}.footer nav{display:flex;flex-wrap:wrap;gap:1rem}.footer-small{padding-top:1.8rem}.footer a{white-space:nowrap}
@media(max-width:940px){.desktop-nav{display:none}.mobile-menu{display:block}.hero{grid-template-columns:1fr 320px;gap:1.4rem}.record-layout{grid-template-columns:minmax(0,1fr) 220px;gap:1rem}}
@media(max-width:720px){.hero,.record-layout,.split{grid-template-columns:1fr}.hero-panel{max-width:none}.cards.three{grid-template-columns:1fr}.sidebar{position:static}.header-inner{min-height:70px}.main-content{padding-top:1.3rem}.footer-grid{grid-template-columns:1fr}.record-header h1{max-width:none}}
@media(max-width:400px){.container{width:min(100% - 1.25rem,1280px)}.brand-icon{height:37px;width:37px;font-size:1.5rem}.brand strong{font-size:.95rem}.brand small{font-size:.59rem}.mobile-menu summary{font-size:.86rem}.search-row{flex-direction:column}.search-row button{width:100%}.facts>div{grid-template-columns:1fr;gap:.15rem}.page-header h1{overflow-wrap:anywhere}}
@media(min-width:1900px){.container{width:min(100% - 7vw,1360px)}body{font-size:1.05rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.feature-card{transition:none}}

.record-intro{font-size:1rem;line-height:1.75;max-width:72ch;margin:1rem 0 1.5rem}.article p{max-width:76ch;line-height:1.75}.facts dd,.list-item strong{overflow-wrap:anywhere}.footer nav a{white-space:normal}
@media(max-width:360px){.answer-code{overflow-wrap:anywhere;font-size:clamp(1.4rem,8vw,2.1rem)}}

/* v1.0.4: unified responsive header and four-part footer on every template */
.site-header{position:relative;z-index:20}.header-inner{gap:clamp(.65rem,2vw,2rem)}
.brand-label{min-width:0}.brand small{line-height:1.3}.desktop-nav{gap:clamp(.85rem,1.6vw,1.65rem);align-items:center}
.desktop-nav a{padding:.6rem .1rem;white-space:nowrap}
.desktop-nav a[aria-current]{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.45rem}
.header-controls{flex-shrink:0}.mobile-menu{position:relative}.mobile-menu nav{width:min(310px,calc(100vw - 1.25rem));max-height:min(75vh,620px);overflow-y:auto;box-shadow:0 20px 50px rgba(13,31,49,.22);border-radius:16px;padding:.5rem}
.mobile-menu[open] summary{background:var(--light-accent);color:var(--ink)}.mobile-menu nav a{display:block;border-radius:9px;padding:.7rem .85rem;line-height:1.45}
.mobile-menu nav a:hover,.mobile-menu nav a:focus-visible{background:var(--light-accent)}
.mobile-menu-divider{height:1px;background:var(--line);display:block;margin:.25rem .5rem}
@media(max-width:1099px){.desktop-nav{display:none}.mobile-menu{display:block}}
@media(max-width:370px){.brand small{display:none}.brand strong{font-size:.91rem}.header-inner{gap:.35rem}.header-controls{gap:.32rem}.brand-icon{width:34px;height:34px}}
/* Shared footer: clear groups, balanced reference panels and readable attribution. */
.footer{--footer-bg:#172b3e;--footer-ink:#f0f7fc;--footer-subtle:#c2d2df;--footer-link:#e3f6f8;--footer-line:#385166;background:var(--footer-bg);color:var(--footer-ink);padding:0;letter-spacing:0}
.footer a{color:var(--footer-link);text-underline-offset:4px;white-space:normal}
.footer a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px}
.footer :focus-visible{outline-color:#f5c967}
.footer-main{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(3,minmax(0,1fr));gap:clamp(1.25rem,3vw,2.5rem);padding-block:2.25rem;align-items:start}
.footer-brand{max-width:34ch}.footer-brand-name{display:inline-block;font-size:1.3rem;font-weight:800;text-decoration:none;margin-bottom:.65rem}
.footer-brand p{font-size:.94rem;line-height:1.7;color:var(--footer-subtle);margin-bottom:.5rem}
.footer-contact{display:inline-flex;align-items:center;min-height:44px;font-size:.9rem}
.footer .footer-nav{display:flex;flex-flow:column nowrap;align-items:flex-start;gap:0;min-width:0}
.footer h2{color:var(--footer-ink);font-size:1rem;line-height:1.4;letter-spacing:0;margin:0 0 .65rem}
.footer .footer-nav a{font-size:.91rem;line-height:1.45;text-decoration:none;min-height:44px;display:inline-flex;align-items:center;padding:.4rem 0;overflow-wrap:anywhere}
.footer-bottom{border-top:1px solid var(--footer-line);background:#122538}
.footer-bottom-inner{padding-block:1.75rem 1rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem 2.5rem}
.footer-bottom-inner p{max-width:none;font-size:.9rem;line-height:1.75;color:var(--footer-subtle);margin:0 0 .7rem}
.footer-reference,.footer-independence{min-width:0}
.footer-source-links{list-style:none;margin:0 0 .6rem;padding:0;display:grid;gap:.2rem}
.footer-source-links a{display:inline-flex;align-items:center;min-height:44px;line-height:1.6;font-size:.9rem;text-decoration:underline}
.footer-copyright{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.35rem 2rem;border-top:1px solid var(--footer-line);padding-top:1rem}
.footer-copyright p{flex:1 1 36rem;font-size:.82rem;margin:0}.footer-copyright>a{display:inline-flex;align-items:center;min-height:44px;font-size:.85rem}
@media(max-width:980px){.footer-main{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-brand{grid-column:1/-1;max-width:64ch}}
@media(max-width:670px){.footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}.footer-bottom-inner{grid-template-columns:minmax(0,1fr)}.footer-reference{padding-bottom:1rem;border-bottom:1px solid var(--footer-line)}}
@media(max-width:330px){.footer-main{grid-template-columns:minmax(0,1fr)}.footer-brand{grid-column:auto}}
/* Policy and guide text remains readable at all viewport widths. */
.article{max-width:800px}.article>section{padding-bottom:1rem;border-bottom:1px solid var(--line)}
.article>section:last-child{border-bottom:0}.article>section h2{font-size:clamp(1.17rem,2.1vw,1.4rem);max-width:46ch}
.article>section p{color:var(--ink);line-height:1.75}.article>section a{font-weight:650;overflow-wrap:anywhere}
@media(max-width:400px){.article>section{margin-block:1.6rem}}
/* Explicit lookup modes prevent six-digit PIN / partial-BSR ambiguity. */
.search-page select{display:block;width:100%;max-width:24rem;min-height:2.75rem;margin:.4rem 0 1rem;padding:.55rem .8rem;border:1px solid var(--line);border-radius:.65rem;background:var(--surface);color:var(--ink);font:inherit}
.search-page select:focus-visible{outline:3px solid var(--accent,#087e8b);outline-offset:2px}


/* v1.0.8 / WCAG 2.2 AA remediation: meaningful boundaries, focus and reflow. */
:root {
  --control-border:#5d7183; /* >=3:1 versus all light surface colours */
  --focus-ring:#854b00;
}
html[data-theme="dark"] {
  --control-border:#bed7e4;
  --focus-ring:#ffcf72;
}
:focus-visible {outline:3px solid var(--focus-ring);outline-offset:3px;}
.visually-hidden {position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important;}
.search-row input,.search-page select,.theme-button,.mobile-menu summary {border:2px solid var(--control-border);}
.search-page select:focus-visible {outline:3px solid var(--focus-ring);outline-offset:3px;}
.theme-button,.mobile-menu summary {min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:.3rem;}
.desktop-nav a {min-height:44px;display:inline-flex;align-items:center;}
.mobile-menu nav a {min-height:44px;display:flex;align-items:center;}
.footer-nav a,.aside-box a,.chips a,.pager a,.secondary-button {min-height:44px;}

.chips a {padding:.65rem .9rem;}
.pager a {display:inline-flex;align-items:center;}
.skip-link {left:1rem;top:-200px;min-height:44px;border-radius:.5rem;}
.skip-link:focus {left:1rem;top:.5rem;}
.mobile-menu nav {max-height:min(75dvh,38rem);overscroll-behavior:contain;}
/* Clear tap targets and lossless text reflow at 200% text enlargement. */
.header-inner {flex-wrap:wrap;min-width:0;}
.brand {min-width:0;flex-shrink:1;}
.brand-label {min-width:0;overflow-wrap:anywhere;}
.brand strong {white-space:normal;overflow-wrap:anywhere;}
.desktop-nav {flex-wrap:wrap;justify-content:center;min-width:0;}
.header-controls {margin-left:auto;}
.copy-row,.pager,.answer-top {min-width:0;}
.copy-row>* {min-width:0;}
.search-row {min-width:0;flex-wrap:wrap;}
.search-row input {min-width:min(100%,11rem);max-width:100%;}
.list-item {min-width:0;}
.list-item>* {min-width:0;}
.footer a {overflow-wrap:anywhere;}
@media(max-width:1099px) {
  .desktop-nav {display:none;}
  .mobile-menu {display:block;}
}
@media(max-width:450px) {
  .header-inner {display:flex;justify-content:space-between;gap:.5rem;padding-block:.6rem;}
  .brand {flex:1 1 8rem;}
  .header-controls {flex:0 0 auto;}
  .footer-main {grid-template-columns:1fr;}
  .footer-brand {grid-column:auto;}
  .footer-nav {min-width:0;}
}
@media(max-width:300px) {
  .header-controls {width:100%;justify-content:flex-end;}
}
@media (forced-colors:active) {
  :focus-visible {outline:3px solid Highlight;}
  .search-row input,.search-page select,.theme-button,.mobile-menu summary {border-color:ButtonText;}
}
@media(prefers-reduced-motion:reduce){ html {scroll-behavior:auto;} }
/* No intrinsic minimums may force the layout wider when text is enlarged. */
.hero>*,.split>*,.record-layout>*,.cards>*,.searchbox,.hero-panel {min-width:0;max-width:100%;}
.search-row input {min-width:0;width:100%;flex-basis:0;}
@media(max-width:720px) {
  .hero,.record-layout,.split,.cards.three {grid-template-columns:minmax(0,1fr);}
}

/* v1.0.11: one consistent brand icon for the header and installed browser icons. */
.brand-icon{background:none;border-radius:13px;overflow:hidden;flex-shrink:0}.brand-icon img{display:block;width:100%;height:100%;object-fit:contain}

/* Branch overview: readable identity, compact context and clear next steps. */
[hidden]{display:none!important}
.record-overview{margin:0 0 1.5rem;padding:clamp(1rem,2.5vw,1.6rem);border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.record-overview h2{font-size:1.05rem;margin:0 0 .7rem;color:var(--muted);letter-spacing:0}
.record-overview .record-intro{margin:0;max-width:68ch;font-size:clamp(1rem,1.2vw,1.1rem);line-height:1.8;color:var(--ink)}
.record-intro strong{font-weight:700}
.record-actions{display:flex;flex-wrap:wrap;gap:.25rem 1.5rem;margin-top:.8rem;padding-top:.5rem;border-top:1px solid var(--line)}
.record-actions a{display:inline-flex;align-items:center;min-height:44px;font-size:.9rem;font-weight:600}
.primary-content>.notice{margin-bottom:1.3rem}


.search-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.search-filters>div{min-width:0}.search-filters select{max-width:100%;margin-bottom:.5rem}
@media(max-width:560px){.search-filters{grid-template-columns:minmax(0,1fr);gap:0}}
.copy-control{display:grid;justify-items:end;gap:.3rem;width:min(14rem,100%);max-width:100%}.copy-feedback{font-size:.8rem;line-height:1.4;min-height:2.8em;max-width:100%;color:var(--muted);text-align:right}.copy-control button{min-width:7.5rem}

.page-versions{display:flex;gap:1rem;flex-wrap:wrap;padding-block:1rem;font-size:.9rem}

/* Reserve progressive controls before their handlers attach. */
.theme-space{display:block;width:45px;height:45px;flex:0 0 45px}.copy-space{width:min(14rem,100%);max-width:100%;min-height:5.75rem}

.search-filters{margin-top:1rem}.search-filters select:disabled{cursor:not-allowed}