.sources-v4{--sv-navy:#0c1720;--sv-panel:#142838;--sv-paper:#f3f5f7;--sv-cream:#f7f4eb;--sv-blue:#3975b1;--sv-accent:#72c6e7;font-family:Inter,Arial,sans-serif;font-size:18px;line-height:1.55;color:var(--sv-navy);background:var(--sv-paper);min-height:70vh}
.sources-v4 *{box-sizing:border-box}
.sources-v4 h1,.sources-v4 h2,.sources-v4 h3,.sources-v4 p{margin:0}
.sources-v4 [hidden]{display:none!important}
.sources-v4 .sv-wrap{width:min(1240px,calc(100% - 80px));margin-inline:auto}
.sources-v4 .sv-eyebrow{font-size:11px;font-weight:650;line-height:1.4;letter-spacing:.12em;color:var(--sv-blue)}
.sources-v4 .sv-hero{padding:58px 0 45px;background:var(--sv-navy);color:var(--sv-cream)}
.sources-v4 .sv-hero>.sv-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:90px;align-items:end}
.sources-v4 .sv-hero .sv-eyebrow{color:var(--sv-accent);margin-bottom:18px}
.sources-v4 h1{font-size:clamp(42px,4.5vw,62px);font-weight:550;line-height:1.05;letter-spacing:-.045em}
.sources-v4 .sv-hero-copy>p:not(.sv-eyebrow){font-size:19px;line-height:1.6;color:#b9cbd5;margin-top:23px}
.sources-v4 .sv-library-note{display:flex;align-items:flex-start;gap:16px;border-left:1px solid #38515f;padding-left:25px;margin-bottom:3px}
.sources-v4 .sv-note-icon{color:var(--sv-accent);display:flex;flex:none;padding-top:3px}
.sources-v4 .sv-note-icon .icon{width:23px;height:23px}
.sources-v4 .sv-library-note strong{font-size:17px;font-weight:600;line-height:1.4;color:#f0f4f5;display:block}
.sources-v4 .sv-library-note p{font-size:15px;line-height:1.6;color:#8fa8b8;margin-top:9px}
.sources-v4 .sv-library{padding-top:35px;padding-bottom:45px}
.sources-v4 .sv-toolbar{border-bottom:1px solid #cfdbe3;padding-bottom:27px}
.sources-v4 .sv-search{max-width:600px}
.sources-v4 .sv-search label,.sources-v4 .sv-mobile-region label,.sources-v4 .sv-filter-label{display:block;font-size:13px;font-weight:600;line-height:1.5;color:#435e70;margin-bottom:9px}
.sources-v4 .sv-search>div{display:flex;align-items:center;gap:13px;background:#fff;border:1px solid #a6b9c5;border-radius:8px;min-height:54px;padding:0 17px}
.sources-v4 .sv-search>div:focus-within{border-color:#3975b1;outline:3px solid #72c6e730}
.sources-v4 .sv-search .icon{width:22px;height:22px;flex:none;color:#658498}
.sources-v4 .sv-search input{display:block;border:0;box-shadow:none;outline:0;width:100%;min-width:0;background:none;color:var(--sv-navy);font:inherit;font-size:17px;line-height:1.5;padding:13px 0}
.sources-v4 .sv-search input::placeholder{color:#728694;opacity:1}
.sources-v4 .sv-region-controls{margin-top:22px}
.sources-v4 .sv-region-tabs{display:flex;flex-wrap:wrap;gap:8px}
.sources-v4 .sv-region-tabs button{display:flex;gap:13px;align-items:center;justify-content:space-between;min-height:46px;padding:10px 15px;border:1px solid #c6d3dc;border-radius:7px;background:#fff;color:#415d6f;font:inherit;font-size:14px;font-weight:550;line-height:1.4;cursor:pointer;transition:color .2s,background .2s,border-color .2s}
.sources-v4 .sv-region-tabs button:hover{border-color:#6186a1;color:#214d6d}
.sources-v4 .sv-region-tabs button[aria-pressed="true"]{background:var(--sv-navy);color:#f7f4eb;border-color:var(--sv-navy)}
.sources-v4 .sv-region-tabs button span{font-size:11px;color:#7e98a8;background:#edf2f5;border-radius:3px;min-width:22px;text-align:center;padding:2px 4px}
.sources-v4 .sv-region-tabs button[aria-pressed="true"] span{background:#294251;color:#a5d9ed}
.sources-v4 .sv-mobile-region{display:none}
.sources-v4 .sv-results-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:31px 0 23px}
.sources-v4 .sv-results-heading .sv-eyebrow{font-size:10px;color:#617e90;margin-bottom:8px}
.sources-v4 .sv-results-heading h2{display:flex;align-items:center;gap:13px;font-size:30px;line-height:1.2;font-weight:600;letter-spacing:-.035em}
.sources-v4 #sv-result-count{display:grid;place-items:center;border:1px solid #b9cfdd;border-radius:5px;padding:3px 8px;font-size:15px;line-height:1.2;font-weight:550;color:#3c7193;letter-spacing:0;min-width:33px}
.sources-v4 .sv-map-link{display:inline-flex;align-items:center;gap:11px;font-size:14px;line-height:1.5;font-weight:600;color:#39729c;text-decoration:none;min-height:44px;padding:5px 0;border-bottom:1px solid #acbdc9;white-space:nowrap}
.sources-v4 .sv-map-link .icon{width:18px;height:18px}
.sources-v4 .sv-source-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px;align-items:start}
.sources-v4 .sv-source-card{display:flex;flex-direction:column;padding:24px 26px 18px;border:1px solid #d0dce4;border-radius:10px;background:#fff;transition:border-color .2s,box-shadow .2s;min-width:0}
.sources-v4 .sv-source-card:hover{border-color:#9fbdce;box-shadow:0 5px 15px #294f6608}
.sources-v4 .sv-card-meta{display:flex;justify-content:space-between;gap:22px;align-items:flex-start;margin-bottom:16px}
.sources-v4 .sv-publisher{font-size:11px;line-height:1.5;font-weight:650;color:#3975a3;text-transform:uppercase;letter-spacing:.025em;max-width:72%}
.sources-v4 .sv-date{font-size:11px;line-height:1.5;color:#77909f;white-space:nowrap}
.sources-v4 .sv-source-title{font-size:22px;line-height:1.3;letter-spacing:-.025em;font-weight:580;color:#142938;overflow-wrap:anywhere}
.sources-v4 .sv-source-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:15px}
.sources-v4 .sv-source-tags span{display:block;font-size:10px;line-height:1.5;color:#597b91;background:#edf3f6;padding:3px 7px;border-radius:3px}
.sources-v4 .sv-purpose{margin-top:15px;border-top:1px solid #e2e9ed}
.sources-v4 .sv-purpose summary{display:flex;justify-content:space-between;gap:20px;align-items:center;cursor:pointer;list-style:none;font-size:13px;line-height:1.5;color:#586f7d;min-height:44px;padding:10px 0}
.sources-v4 .sv-purpose summary::-webkit-details-marker{display:none}
.sources-v4 .sv-purpose-plus{font-size:20px;line-height:1;font-weight:400;color:#7898aa;transition:transform .2s}
.sources-v4 .sv-purpose[open] .sv-purpose-plus{transform:rotate(45deg)}
.sources-v4 .sv-purpose p{font-size:15px;line-height:1.65;color:#536d7d;padding:0 0 13px;max-width:490px}
.sources-v4 .sv-card-bottom{display:flex;justify-content:space-between;align-items:center;gap:25px;border-top:1px solid #e2e9ed;padding-top:10px}
.sources-v4 .sv-source-index{font-size:10px;line-height:1.4;color:#8aa0ae;letter-spacing:.07em}
.sources-v4 .sv-open-source{display:inline-flex;gap:10px;align-items:center;font-size:14px;line-height:1.5;font-weight:600;color:#256895;text-decoration:none;min-height:34px;padding:5px 0}
.sources-v4 .sv-open-source .icon{width:16px;height:16px}
.sources-v4 .sv-unavailable{font-size:13px;color:#778e9c}
.sources-v4 .sv-load{display:flex;flex-direction:column;align-items:center;gap:14px;padding-top:28px}
.sources-v4 .sv-load p{font-size:13px;color:#6f899a}
.sources-v4 .sv-load button,.sources-v4 .sv-empty button{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:50px;border:1px solid #a6bece;background:#fff;color:#2c648c;border-radius:7px;font:inherit;font-size:15px;font-weight:600;padding:12px 22px;cursor:pointer}
.sources-v4 .sv-load button .icon,.sources-v4 .sv-empty button .icon{width:19px;height:19px}
.sources-v4 .sv-context-note{display:flex;gap:13px;align-items:flex-start;border-top:1px solid #d0dce4;padding-top:21px;margin-top:34px;max-width:920px}
.sources-v4 .sv-context-note>span{display:flex;color:#6c8ca1;flex:none;padding-top:3px}
.sources-v4 .sv-context-note .icon{width:18px;height:18px}
.sources-v4 .sv-context-note p{font-size:13px;line-height:1.6;color:#708694}
.sources-v4 .sv-empty{padding:45px 25px;text-align:center;border:1px dashed #b6cbd8;border-radius:10px;background:#edf3f6}
.sources-v4 .sv-empty>span{display:block;color:#6e95af;margin-bottom:12px}
.sources-v4 .sv-empty>span .icon{width:33px;height:33px}
.sources-v4 .sv-empty h3{font-size:26px;line-height:1.2;font-weight:600;letter-spacing:-.03em}
.sources-v4 .sv-empty p{font-size:16px;line-height:1.5;color:#637e90;margin-top:10px}
.sources-v4 .sv-empty button{margin-top:22px}
.sources-v4 .sv-noscript{font-size:17px;color:#557387;border:1px solid #c8d9e5;padding:20px}
.sources-v4 button:focus-visible,.sources-v4 a:focus-visible,.sources-v4 summary:focus-visible,.sources-v4 select:focus-visible{outline:3px solid #72c6e7;outline-offset:4px}
@media(max-width:1000px){.sources-v4 .sv-wrap{width:calc(100% - 56px)}.sources-v4 .sv-hero>.sv-wrap{grid-template-columns:1.2fr .8fr;gap:45px}.sources-v4 h1{font-size:49px}.sources-v4 .sv-library-note{padding-left:20px;gap:12px}.sources-v4 .sv-source-card{padding:22px 23px 16px}.sources-v4 .sv-card-meta{gap:14px}.sources-v4 .sv-source-title{font-size:21px}}
@media(max-width:700px){
  .sources-v4{font-size:17px}
  .sources-v4 .sv-wrap{width:calc(100% - 40px)}
  .sources-v4 .sv-hero{padding:36px 0 30px}
  .sources-v4 .sv-hero>.sv-wrap{display:flex;flex-direction:column;gap:26px;align-items:stretch}
  .sources-v4 .sv-hero .sv-eyebrow{margin-bottom:15px}
  .sources-v4 h1{font-size:clamp(36px,9vw,49px);line-height:1.08}
  .sources-v4 .sv-hero-copy>p:not(.sv-eyebrow){font-size:18px;line-height:1.55;margin-top:19px}
  .sources-v4 .sv-hero-copy>p br{display:none}
  .sources-v4 .sv-library-note{border-left:0;border-top:1px solid #344d5e;padding:20px 0 0;margin:0;gap:14px}
  .sources-v4 .sv-library-note strong{font-size:17px}
  .sources-v4 .sv-library-note p{font-size:15px;line-height:1.6;margin-top:5px;color:#a5bccb}
  .sources-v4 .sv-library{padding-top:25px;padding-bottom:30px}
  .sources-v4 .sv-toolbar{padding-bottom:24px}
  .sources-v4 .sv-search label,.sources-v4 .sv-mobile-region label{font-size:14px;margin-bottom:8px}
  .sources-v4 .sv-search>div{min-height:56px;padding:0 14px;gap:10px}
  .sources-v4 .sv-search input{font-size:17px;padding:14px 0}
  .sources-v4 .sv-search input::placeholder{font-size:15px}
  .sources-v4 .sv-region-controls{display:none}
  .sources-v4 .sv-mobile-region{display:block;margin-top:17px}
  .sources-v4 .sv-mobile-region select{width:100%;min-height:54px;border:1px solid #a6b9c5;border-radius:8px;background:#fff;color:#244c67;padding:13px 15px;font:inherit;font-size:17px;line-height:1.5}
  .sources-v4 .sv-results-heading{padding:27px 0 20px;flex-direction:column;align-items:flex-start;gap:11px}
  .sources-v4 .sv-results-heading .sv-eyebrow{font-size:11px;margin-bottom:8px}
  .sources-v4 .sv-results-heading h2{font-size:30px;gap:12px}
  .sources-v4 #sv-result-count{font-size:15px;padding:4px 8px}
  .sources-v4 .sv-map-link{font-size:16px;min-height:47px}
  .sources-v4 .sv-source-grid{display:flex;flex-direction:column;gap:14px;align-items:stretch}
  .sources-v4 .sv-source-card{padding:23px 21px 15px;border-radius:10px}
  .sources-v4 .sv-card-meta{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
  .sources-v4 .sv-publisher{font-size:11px;line-height:1.55;max-width:none}
  .sources-v4 .sv-date{font-size:12px;color:#718b9c}
  .sources-v4 .sv-source-title{font-size:23px;line-height:1.28;letter-spacing:-.025em}
  .sources-v4 .sv-source-tags{margin-top:16px;gap:6px}
  .sources-v4 .sv-source-tags span{font-size:11px;padding:4px 8px}
  .sources-v4 .sv-purpose{margin-top:17px}
  .sources-v4 .sv-purpose summary{font-size:16px;min-height:52px;padding:13px 0}
  .sources-v4 .sv-purpose p{font-size:17px;line-height:1.6;padding-bottom:18px}
  .sources-v4 .sv-card-bottom{padding-top:4px}
  .sources-v4 .sv-source-index{font-size:11px}
  .sources-v4 .sv-open-source{font-size:17px;min-height:50px;gap:11px}
  .sources-v4 .sv-open-source .icon{width:19px;height:19px}
  .sources-v4 .sv-load{padding-top:24px;gap:15px}
  .sources-v4 .sv-load p{font-size:14px}
  .sources-v4 .sv-load button,.sources-v4 .sv-empty button{width:100%;min-height:54px;font-size:17px}
  .sources-v4 .sv-context-note{padding-top:20px;margin-top:28px;gap:11px}
  .sources-v4 .sv-context-note p{font-size:14px;line-height:1.6}
  .sources-v4 .sv-empty{padding:32px 21px}
  .sources-v4 .sv-empty h3{font-size:28px}
  .sources-v4 .sv-empty p{font-size:17px}
}
@media(max-width:360px){.sources-v4 .sv-wrap{width:calc(100% - 32px)}.sources-v4 .sv-source-card{padding-inline:18px}.sources-v4 .sv-results-heading h2{font-size:28px}.sources-v4 .sv-search input::placeholder{font-size:13px}}
@media(prefers-reduced-motion:reduce){.sources-v4 *{transition:none!important;scroll-behavior:auto!important}}
/* V5: sources support the product quietly; they are not the main sales claim. */
.sources-v4 .sv-hero{background:#f3f5f7;color:#142838;padding:45px 0 0}
.sources-v4 .sv-hero>.sv-wrap{display:block}
.sources-v4 h1{font-size:43px;font-weight:650;line-height:1.1;letter-spacing:-.04em;color:#142838}
.sources-v4 .sv-hero-copy>p:not(.sv-eyebrow){font-size:17px;line-height:1.65;color:#6c7f8b;margin-top:14px}
.sources-v4 .sv-library{padding-top:29px}
.sources-v4 .sv-toolbar{padding-bottom:22px}
.sources-v4 .sv-search{max-width:560px}
.sources-v4 .sv-search label,.sources-v4 .sv-mobile-region label,.sources-v4 .sv-filter-label{font-size:12px;color:#6a7f8c;font-weight:550}
.sources-v4 .sv-region-controls{margin-top:18px}
.sources-v4 .sv-region-tabs{gap:7px}
.sources-v4 .sv-region-tabs button{min-height:43px;border-color:#d2dce3;border-radius:6px;font-size:13px;padding:8px 13px;font-weight:500}
.sources-v4 .sv-region-tabs button[aria-pressed=true]{background:#e3edf3;border-color:#afc7d5;color:#25536f}
.sources-v4 .sv-results-heading{padding:25px 0 19px}
.sources-v4 .sv-results-heading h2{font-size:24px;font-weight:600;letter-spacing:-.03em;color:#405b6b}
.sources-v4 #sv-result-count.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.sources-v4 .sv-map-link{font-size:13px;color:#658293;border-bottom:0;min-height:42px;font-weight:500}
.sources-v4 .sv-map-link:hover{color:#245b80;text-decoration:underline;text-underline-offset:4px}
.sources-v4 .sv-source-card{border-color:#dce4e9;border-radius:9px;box-shadow:none;padding:23px 25px 17px}
.sources-v4 .sv-publisher{font-size:10px;font-weight:600;color:#668393;letter-spacing:.02em}
.sources-v4 .sv-date{color:#889aa5;font-size:10px}
.sources-v4 .sv-source-title{font-size:21px;line-height:1.35;font-weight:570;color:#254251}
.sources-v4 .sv-source-tags span{background:#f0f4f6;color:#7c909b;font-size:10px}
.sources-v4 .sv-purpose summary{color:#8296a1;font-size:12px}
.sources-v4 .sv-purpose p{font-size:15px;color:#5d7583;line-height:1.7}
.sources-v4 .sv-card-bottom{justify-content:flex-end}
.sources-v4 .sv-open-source{font-size:13px;color:#527a91;font-weight:550}
.sources-v4 .sv-load p{font-size:11px;color:#8a9da8}
.sources-v4 .sv-load button{min-height:47px;font-size:14px;background:transparent;border-color:#c3d1da;color:#668293;font-weight:550}
.sources-v4 .sv-context-note{display:block;font-size:12px;line-height:1.65;color:#8a9ba6;border-top:1px solid #dce4e9;max-width:none;padding-top:19px;margin-top:27px}
@media(max-width:700px){
 .sources-v4 .sv-hero{padding:31px 0 0}
 .sources-v4 h1{font-size:36px}
 .sources-v4 .sv-hero-copy>p:not(.sv-eyebrow){font-size:17px;line-height:1.7;margin-top:13px;max-width:32ch}
 .sources-v4 .sv-library{padding-top:25px}
 .sources-v4 .sv-search label,.sources-v4 .sv-mobile-region label{font-size:13px}
 .sources-v4 .sv-mobile-region{margin-top:16px}
 .sources-v4 .sv-results-heading{padding:23px 0 18px;gap:6px}
 .sources-v4 .sv-results-heading h2{font-size:25px}
 .sources-v4 .sv-map-link{font-size:14px;min-height:44px}
 .sources-v4 .sv-source-card{padding:22px 21px 14px}
 .sources-v4 .sv-publisher{font-size:11px;line-height:1.55}
 .sources-v4 .sv-date{font-size:12px}
 .sources-v4 .sv-source-title{font-size:22px;line-height:1.35}
 .sources-v4 .sv-source-tags span{font-size:10px}
 .sources-v4 .sv-purpose summary{font-size:15px;min-height:50px}
 .sources-v4 .sv-purpose p{font-size:17px;line-height:1.7}
 .sources-v4 .sv-open-source{font-size:16px;min-height:49px}
 .sources-v4 .sv-load p{font-size:12px}
 .sources-v4 .sv-load button{font-size:16px;min-height:52px}
 .sources-v4 .sv-context-note{font-size:13px;line-height:1.7}
}