/* Общий стиль SEO-статей лендинга (raschet-stoimosti-uborki, crm-dlya-kliningovoj-kompanii, ...).
   Палитра = лендинг: navy-фон, синий акцент. Новая статья = <link href="css/article.css"> + этот каркас:
   header.top → .crumbs → article → .cta-block → footer. Подробнее — docs/internal/seo-plan.md §5. */
:root{--bg:#0c0f15;--panel:#131926;--panel2:#182031;--line:#252e40;--ink:#f2f5fa;--muted:#9aa3b2;--blue:#3b82f6;--blue-d:#2563eb}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:'Inter Tight',system-ui,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line)}
.top{display:flex;align-items:center;gap:12px;padding:18px 0}
.top img{width:38px;height:auto}
.top b{font-size:14px;line-height:1.25}
.top a{text-decoration:none;color:inherit}
.top .cta{margin-left:auto;background:var(--blue-d);color:#fff;border-radius:100px;padding:9px 18px;font-size:14px;font-weight:600;white-space:nowrap}
.crumbs{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
article{padding:10px 0 40px}
h1{font-size:clamp(26px,4.6vw,40px);font-weight:800;line-height:1.15;letter-spacing:-.5px;margin:14px 0 12px}
.lead{font-size:17.5px;color:#c7cdd8;margin-bottom:8px}
.byline{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);margin:18px 0 6px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.byline img{width:34px;height:34px;border-radius:50%;object-fit:cover;object-position:top}
h2{font-size:clamp(20px,3vw,26px);font-weight:800;line-height:1.25;margin:34px 0 12px}
h3{font-size:17.5px;font-weight:700;margin:20px 0 8px}
p,li{color:#c7cdd8;font-size:16px}
p{margin-bottom:12px}
ul,ol{margin:0 0 14px 22px}
li{margin-bottom:7px}
b{color:var(--ink)}
.box{background:rgba(59,130,246,.08);border:1px solid rgba(59,130,246,.25);border-radius:14px;padding:16px 20px;margin:16px 0}
.box p{margin:0}
.formula{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin:16px 0;font-weight:600;color:var(--ink);font-size:15.5px}
.tblwrap{overflow-x:auto;margin:14px 0}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top;color:#c7cdd8}
th{color:var(--ink);background:rgba(255,255,255,.04);font-weight:700}
.frame{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:18px 0}
.frame-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.frame-bar i{width:10px;height:10px;border-radius:50%;background:var(--line);display:inline-block}
.frame img{display:block;width:100%;height:auto}
.quote{border-left:3px solid var(--blue);padding:4px 0 4px 18px;margin:20px 0;color:#dfe4ec;font-style:italic}
.quote .who{display:block;margin-top:8px;font-style:normal;font-size:13.5px;color:var(--muted)}
details{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:0 20px;margin-bottom:10px}
summary{cursor:pointer;font-weight:700;color:var(--ink);padding:15px 0;font-size:16px;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::after{content:"+";color:var(--muted);font-weight:600}
details[open] summary::after{content:"–"}
details p{padding-bottom:15px}
.cta-block{background:linear-gradient(135deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:20px;padding:28px;margin:36px 0 10px;text-align:center}
.cta-block h2{margin-top:0}
.cta-block p{max-width:560px;margin:0 auto 18px}
.btn{display:inline-block;background:var(--blue-d);color:#fff;text-decoration:none;border-radius:100px;padding:14px 30px;font-weight:700;font-size:16px}
.btn:hover{background:var(--blue)}
.also{margin:26px 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:15px}
footer{border-top:1px solid var(--line);margin-top:40px}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;padding-top:20px;padding-bottom:26px;font-size:13px;color:var(--muted)}
footer a{color:var(--muted)}
/* Хаб /stati: карточки статей */
.cards{display:grid;gap:14px;margin:20px 0}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px 22px;text-decoration:none;transition:border-color .2s}
.card:hover{border-color:var(--blue)}
.card h2{margin:0 0 6px;font-size:19px}
.card p{margin:0 0 8px;font-size:15px}
.card .meta{font-size:13px;color:var(--muted)}