:root{--blue:#0b2a4a;--blue2:#103a63;--cyan:#35a7d8;--ink:#1c2733;--mut:#5a6b7a;--paper:#fff;--line:#d7e3ec;--soft:#eef4f8}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
.wrap{max-width:1140px;margin:0 auto;padding-left:20px;padding-right:20px}
a{color:#1273a8}
.site-hd{background:var(--blue);border-bottom:3px solid var(--cyan)}
.hd-in{display:flex;align-items:center;gap:22px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
.brand{font-size:24px;font-weight:800;letter-spacing:1px;color:#fff;text-decoration:none}
.brand span{color:var(--cyan)}
.brand.light{font-size:20px}
.main-nav{display:flex;gap:14px;flex-wrap:wrap;flex:1}
.main-nav a{color:#cfe6f2;text-decoration:none;font-size:14px}
@media (hover:hover){.main-nav a:hover{color:#fff;text-decoration:underline}}
.main-nav a.on{color:#fff;text-decoration:underline}
.main-nav a:active,.hd-cta:active,.btn:active,.quote-form button:active{transform:translateY(1px)}
.hd-cta{background:var(--cyan);color:#06263d;text-decoration:none;font-weight:700;font-size:14px;padding:9px 14px;border-radius:3px}
.nav-toggle{display:none}
.nav-burger{display:none}
.hero{background:linear-gradient(180deg,var(--blue) 0%,var(--blue2) 100%);color:#eaf4fa;padding:44px 0 0}
.hero h1{font-size:38px;line-height:1.2;margin:8px 0 14px;color:#fff}
.kicker{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;letter-spacing:2px;text-transform:uppercase;color:var(--cyan);margin:0}
.hero .kicker{color:#7fc6e8}
.lede{font-size:18px;max-width:760px;color:#d6e9f4}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0 26px}
.btn{background:var(--cyan);color:#06263d;font-weight:700;text-decoration:none;padding:12px 18px;border-radius:3px}
.btn.ghost{background:transparent;border:1px solid #7fc6e8;color:#eaf4fa}
.trace{width:100%;height:64px;display:block}
.evidence{display:flex;gap:10px;flex-wrap:wrap;padding:14px 20px 20px}
.evidence span{border:1px solid #2c5a80;background:#0d3358;color:#cfe6f2;font-size:13px;padding:6px 10px;border-radius:2px;font-family:ui-monospace,Menlo,Consolas,monospace}
.page-hd{background:linear-gradient(180deg,var(--blue),var(--blue2));color:#fff;padding:30px 0 0}
.page-hd h1{font-size:31px;line-height:1.25;margin:6px 0 16px}
.page-fig{margin:4px 0 18px}
.page-img{max-width:340px;width:100%;height:auto;border:2px solid #2c5a80;border-radius:3px;background:#fff;display:block}
.page-fig figcaption{font-size:12.5px;color:#7fa8c4;font-family:ui-monospace,Menlo,Consolas,monospace;margin-top:6px}
.hero-img{max-width:300px;width:100%;height:auto;border:2px solid #2c5a80;border-radius:3px;background:#fff;margin:0 0 20px}
.content{padding:26px 20px 10px;font-size:16.5px}
.content h2{font-size:24px;color:var(--blue);border-bottom:2px solid var(--cyan);padding-bottom:9px;margin:30px 0 12px}
.content h3{font-size:19px;color:var(--blue2);margin:22px 0 8px}
.content p{margin:0 0 14px}
.content ul{margin:0 0 14px;padding-left:22px}
.content li{margin-bottom:6px}
.crumbs{font-size:13px;color:var(--mut);margin-bottom:8px}
.crumbs a{color:var(--mut)}
table.spec{width:100%;border-collapse:collapse;margin:14px 0 22px;font-size:15px;position:relative;background-color:#fff;background-image:linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8),linear-gradient(#35a7d8,#35a7d8);background-size:14px 2px,2px 14px,14px 2px,2px 14px,14px 2px,2px 14px,14px 2px,2px 14px;background-position:top left,top left,top right,top right,bottom left,bottom left,bottom right,bottom right;background-repeat:no-repeat}
table.spec th,table.spec td{border:1px solid var(--line);padding:8px 11px;text-align:left;vertical-align:top}
table.spec th{background:var(--blue);color:#fff;font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:600;width:34%}
table.spec td{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14.5px}
table.spec tr:nth-child(even) td{background:var(--soft)}
.faq h3{margin-bottom:4px}
.note{border-left:4px solid var(--cyan);background:var(--soft);padding:12px 16px;margin:16px 0}
.rel{border-top:1px solid var(--line);margin-top:30px;padding-top:12px}
.ft-grid>*,.cards>*,.quote-form>*{min-width:0}
.rel ul{list-style:none;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.rel li a{display:block;border:1px solid var(--line);padding:8px 12px;border-radius:3px;text-decoration:none;background:var(--soft)}
.cta-band{background:var(--blue);color:#eaf4fa;margin-top:36px;padding:34px 0 40px}
.cta-band h2{color:#fff;margin-top:0}
.cta-band a{color:#9fd3ee}
.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:820px}
.quote-form label{display:flex;flex-direction:column;gap:5px;font-size:14px}
.quote-form label.wide{grid-column:1/-1}
.quote-form input,.quote-form textarea{padding:10px;border:1px solid #2c5a80;border-radius:3px;font-size:15px;font-family:inherit}
.quote-form button{grid-column:1/-1;background:var(--cyan);border:0;color:#06263d;font-weight:700;font-size:16px;padding:13px;border-radius:3px;cursor:pointer}
.form-note{font-size:13.5px;color:#b8d4e4}
.site-ft{background:#071e33;color:#b8d4e4;padding:30px 0 0;margin-top:0}
.ft-grid{display:grid;grid-template-columns:1.2fr 1fr 1.2fr;gap:26px}
.site-ft h4{color:#fff;margin:0 0 10px}
.site-ft a{color:#9fd3ee;text-decoration:none;display:block;font-size:14px;margin-bottom:5px}
.ft-note{font-size:14px}
.ft-grid p a{display:inline}
.ft-base{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:1px solid #12395c;padding:14px 20px 10px;font-size:13px}
.ft-base a{display:inline}
.ft-trace{height:36px;opacity:.6}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:16px 0}
.card{border:1px solid var(--line);border-top:3px solid var(--cyan);padding:14px;background:#fff}
.card h3{margin:0 0 6px;font-size:17px}
.card p{font-size:14.5px;color:var(--mut)}
@media (max-width:700px){
 .hero h1{font-size:29px}.page-hd h1{font-size:25px}
 .ft-grid{grid-template-columns:1fr}
 .quote-form{grid-template-columns:1fr}
 .hd-in{gap:12px}.main-nav{gap:10px}
 table.spec th{width:42%}
 .content{font-size:16px}
}

.arch{margin:20px 0 24px;background:#081a2a;border:1px solid #2c5a80;padding:12px 14px 6px;overflow-x:auto}
.arch figcaption{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:#9fd3ee;margin-bottom:6px}
.arch svg{width:100%;min-width:900px;height:auto;display:block}
.arch-note{font-size:12.5px;color:#7fa8c4;margin:4px 0 8px}
/* Mobile header hamburger collapse (<=768px only; desktop layout untouched).
   Pure CSS checkbox pattern: collapsed shows brand + burger only;
   CTA and nav links live inside the expanded panel. */
@media (max-width:768px){
 .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:40px;padding:9px 8px;margin-left:auto;cursor:pointer;flex:none}
 .nav-burger span{display:block;height:3px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
 .nav-toggle:checked~.nav-burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
 .nav-toggle:checked~.nav-burger span:nth-child(2){opacity:0}
 .nav-toggle:checked~.nav-burger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
 .main-nav{display:none;order:3;flex-basis:100%;flex-direction:column;gap:0}
 .main-nav a{padding:10px 2px;border-top:1px solid #1d4a70;font-size:15px}
 .hd-cta{display:none;order:4;flex-basis:100%;text-align:center;margin-top:10px}
 .nav-toggle:checked~.main-nav{display:flex}
 .nav-toggle:checked~.hd-cta{display:block}
}

/* i18n language switcher (sg-translate, 2026-10-22) */
.langsw{position:relative;flex:none}
.langsw summary{cursor:pointer;list-style:none;font-size:13px;font-weight:600;border:1.5px solid #35a7d8;border-radius:6px;padding:6px 12px;background:transparent;color:#cfe6f2;white-space:nowrap}
.langsw summary::-webkit-details-marker{display:none}
.langsw .langmenu{position:absolute;right:0;top:calc(100% + 6px);background:#0d2438;border:1px solid #1d4a70;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.35);padding:6px;z-index:60;min-width:150px;display:flex;flex-direction:column}
.langsw .langmenu a{padding:7px 10px;font-size:14px;color:#cfe6f2;text-decoration:none;border-radius:4px;white-space:nowrap}
.langsw .langmenu a:hover{background:#12314e;color:#fff}
.langsw .langmenu a.cur{font-weight:700;color:#fff}
body>.langsw{margin:12px}