/* Shared navigation, English and Tamil. */
.masthead{position:sticky;top:0;z-index:60;height:86px;background:var(--bg,#d5ebdd);border-bottom:1px solid var(--line,#0a2e2126);backdrop-filter:none}.masthead .nav-shell{height:100%;display:flex;align-items:center;gap:30px}.masthead .brand{width:165px;display:block;flex-shrink:0;line-height:1}.masthead .brand img{width:100%;height:auto;display:block}.masthead .logo-dark{display:none}html[data-theme=dark] .masthead .logo-light{display:none}html[data-theme=dark] .masthead .logo-dark{display:block}.masthead .main-nav{display:flex;align-items:center;gap:5px;margin-left:auto;border:1px solid var(--line,#0a2e2126);padding:5px;border-radius:30px;background:var(--surface,#e8f3ed);font-size:13px;position:static}.masthead .main-nav>a{padding:7px 16px;text-decoration:none;border-radius:22px;line-height:1.6;color:var(--ink,var(--fg,#0a2e21));white-space:nowrap}.masthead .main-nav>a[aria-current=page]{background:var(--bg,#d5ebdd)}.masthead .main-nav>a:after{display:none}.masthead .main-nav>a:hover{background:var(--bg,#d5ebdd)}.masthead .main-nav .nav-contact-mobile{display:none}.masthead .nav-controls{display:flex;align-items:center;gap:12px;margin-left:0}.masthead .language{font-size:12px;color:var(--ink,var(--fg,#0a2e21));padding:8px 5px;text-decoration:none}.masthead .theme-toggle{height:36px;width:36px;display:grid;place-items:center;border:1px solid var(--line,#0a2e2126);border-radius:50%;background:transparent;color:var(--ink,var(--fg,#0a2e21));padding:8px}.masthead .theme-toggle svg{width:18px;height:18px}.masthead .nav-cta{display:flex;align-items:center;gap:15px;border:1px solid #0a2e21;border-radius:8px;background:#0a2e21;color:#f1faf5;padding:11px 17px;text-decoration:none;font-size:12px;line-height:1.5;white-space:nowrap}.masthead .nav-cta:hover{background:#174b36}.masthead .nav-cta svg{width:17px;height:17px}.masthead .menu-toggle{display:none}html[data-theme=dark] .masthead .nav-cta{background:#d5ebdd;border-color:#d5ebdd;color:#0a2e21}.masthead a:focus-visible,.masthead button:focus-visible{outline:2px solid currentColor;outline-offset:4px}@media(max-width:1000px){.masthead .nav-shell{gap:18px}.masthead .main-nav>a{padding:7px 12px}.masthead .nav-controls{gap:9px}.masthead .brand{width:150px}}@media(max-width:850px){.masthead{height:78px}.masthead .main-nav{display:none;position:absolute;top:77px;left:0;right:0;margin:0;padding:15px 20px 22px;border:0;border-bottom:1px solid var(--line,#0a2e2126);border-radius:0;background:var(--bg,#d5ebdd);font-size:15px}.masthead .main-nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:5px}.masthead .main-nav .nav-contact-mobile{display:block}.masthead .nav-controls{margin-left:auto}.masthead .nav-cta{display:none}.masthead .menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:38px;height:38px;border:0;background:transparent;padding:8px;color:var(--ink,var(--fg,#0a2e21))}.masthead .menu-toggle span{height:1.5px;width:22px;background:currentColor;display:block}.masthead .theme-toggle{width:34px;height:34px}.masthead .brand{width:150px}}@media(max-width:380px){.masthead .brand{width:132px}.masthead .nav-shell{gap:8px}.masthead .nav-controls{gap:4px}.masthead .language{font-size:10px;padding:8px 2px}}