/*
Theme Name: Heating Calc Neutral
Version: 2.1.0
Description: Нейтральная премиальная адаптивная тема для инженерного калькулятора.
*/
:root{--tc-navy:#0a2539;--tc-navy2:#123e59;--tc-orange:#ff6417;--tc-line:#e2eaf0;--tc-muted:#6b7f8f}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;color:#10283b;background:#fff}.tc-main{min-height:72vh}.tc-header{min-height:82px;padding:10px max(3vw,24px);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--tc-line);position:sticky;top:0;z-index:9000;backdrop-filter:blur(10px);box-shadow:0 6px 24px rgba(20,55,78,.05)}.admin-bar .tc-header{top:32px}.tc-brand{display:flex;align-items:center;gap:12px;color:#10283b;text-decoration:none}.tc-brand>span{display:flex;flex-direction:column}.tc-brand b{font-size:15px;letter-spacing:.05em}.tc-brand small{font-size:10px;color:#708394;margin-top:2px}.tc-mark{position:relative;width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#ff7a23,#ed4f10);display:block;box-shadow:0 8px 18px rgba(255,100,23,.22);flex:0 0 auto}.tc-mark:before{content:"↗";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-style:normal;font-weight:900;font-size:22px;transform:rotate(-15deg)}.tc-nav{display:flex;gap:22px;align-items:center;justify-content:center;font-size:12px}.tc-nav>a{color:#365369;text-decoration:none;font-weight:800}.tc-nav>a:hover{color:#0c2c44}.tc-actions{display:flex;align-items:center;gap:12px}.tc-phone{display:flex;flex-direction:column;text-decoration:none;text-align:right}.tc-phone small{font-size:9px;color:#82929e}.tc-phone b{font-size:13px;color:#183a50}.tc-contact{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ff7925,#ef5011);color:#fff;text-decoration:none;border-radius:12px;padding:12px 16px;font-size:12px;font-weight:900;box-shadow:0 10px 24px rgba(255,100,23,.20)}.tc-footer{margin-top:34px;background:radial-gradient(circle at 85% 10%,rgba(255,106,26,.10),transparent 26%),linear-gradient(120deg,#071c2d,#113950);color:#c6d5df}.tc-footer-main{padding:38px max(4vw,24px);display:grid;grid-template-columns:1.25fr 1fr .85fr;align-items:center;gap:34px;max-width:1380px;margin:auto}.tc-footer-brand{display:flex;gap:15px;align-items:center}.tc-footer-brand>div{display:flex;flex-direction:column;gap:6px}.tc-footer-brand b{font-size:18px;color:#fff}.tc-footer-brand span{max-width:650px;line-height:1.5}.tc-trust{display:grid;gap:8px;font-size:12px;color:#d7e3ea}.tc-footer-cta{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);padding:16px 18px;border-radius:16px;display:flex;flex-direction:column;gap:6px}.tc-footer-cta>a{color:#fff;text-decoration:none;font-weight:850}.tc-footer-cta .tc-mail{font-size:11px;color:#b9cedb;font-weight:650}.tc-footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:14px max(4vw,24px);display:flex;justify-content:space-between;gap:18px;font-size:11px;max-width:1380px;margin:auto}.tc-footer-bottom a{color:#fff;text-decoration:none;font-weight:750}@media(max-width:980px){.tc-header{grid-template-columns:1fr auto}.tc-nav{display:none}.tc-phone{display:none}.tc-footer-main{grid-template-columns:1fr 1fr}.tc-footer-brand{grid-column:1/-1}}@media(max-width:782px){.admin-bar .tc-header{top:46px}}@media(max-width:620px){.tc-header{min-height:68px;padding:8px 14px;gap:10px}.tc-brand small{display:none}.tc-brand b{font-size:12px}.tc-mark{width:34px;height:34px}.tc-contact{padding:10px 12px;font-size:11px}.tc-footer-main{grid-template-columns:1fr;padding:28px 18px}.tc-footer-brand{grid-column:auto}.tc-footer-bottom{flex-direction:column;padding:13px 18px}.tc-trust{font-size:11px}}