/* ===== Сайт «Инвентаризация» (invent.mercusteam.ru) ===== */
:root{
  --bg:#f6f7f9; --card:#fff; --ink:#0e1b2a; --muted:#5b6b7d; --line:#e3e8ee;
  --primary:#0099a8; --primary-d:#00808d; --dark:#001a34; --accent:#f5a623; --err:#dc2626; --ok:#16a34a;
  --radius:14px; --shadow:0 6px 24px rgba(14,27,42,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
img{max-width:100%;display:block}
a{color:var(--primary-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0 0 12px}
h1{font-size:clamp(28px,4.2vw,46px)}
h2{font-size:clamp(22px,2.6vw,32px)}
h3{font-size:18px}
p{margin:0 0 12px}
.wrap{max-width:1140px;margin:0 auto;padding:0 18px}
.section{padding:56px 18px}
.band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.sub{color:var(--muted);max-width:820px;margin-bottom:26px}
.muted{color:var(--muted)}
.small{font-size:13px}
.tiny{font-size:12px;color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* кнопки */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:10px;
  background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{border-color:var(--primary);text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d);border-color:var(--primary-d)}
.btn-lg{padding:14px 24px;font-size:17px;border-radius:12px}
.btn-sm{padding:7px 13px;font-size:14px}

/* шапка */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:17px}
.brand small{display:block;font-weight:500;color:var(--muted);font-size:11.5px;letter-spacing:.3px;text-transform:uppercase}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;color:#fff;font-size:14px;font-weight:800;
  background:linear-gradient(135deg,#3771bb,#14b8a6)}
.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav a{color:var(--ink);font-size:15px}
@media(max-width:900px){.nav{gap:12px}.nav a:not(.btn){display:none}}

/* герой */
.hero{color:#fff;background:radial-gradient(1200px 500px at 80% -10%,rgba(20,184,166,.35),transparent),var(--dark);padding:56px 0}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
@media(max-width:900px){.hero-in{grid-template-columns:1fr}}
.hero h1{color:#fff}
.lead{color:#c7d4e0;font-size:18px}
.pill{display:inline-block;margin-bottom:14px;padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#dfe9f2}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0 18px}
.hero-cta .btn{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.25);color:#fff}
.hero-cta .btn-primary{background:var(--primary);border-color:var(--primary)}
.hero-points{list-style:none;padding:0;margin:0;color:#c7d4e0;font-size:15px}
.hero-points li{margin-bottom:6px}
.hero-shot img{border-radius:var(--radius);box-shadow:0 24px 60px rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.12)}

/* сетки и карточки */
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-3,.grid-4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card p{margin:0;color:var(--muted);font-size:15px}
.card h3{margin-bottom:8px}
.ico{font-size:26px;margin-bottom:8px}
.pain b{display:block;margin-bottom:6px}
.steps .num{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;margin-bottom:10px}
.checks{list-style:none;padding:0}
.checks li{padding-left:26px;position:relative;margin-bottom:8px}
.checks li:before{content:"✔";position:absolute;left:0;color:var(--ok);font-weight:800}

/* скриншоты */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:780px){.shots{grid-template-columns:1fr}}
.shots figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.shots figcaption{padding:10px 14px;font-size:14px;color:var(--muted);border-top:1px solid var(--line)}
.shots img{width:100%}

.feature-row{display:grid;grid-template-columns:1fr .8fr;gap:30px;align-items:center}
@media(max-width:900px){.feature-row{grid-template-columns:1fr}}
.row-shot{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);max-width:420px;margin:0 auto}

/* тарифы */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:980px){.plans{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.plans{grid-template-columns:1fr}}
.plan{position:relative;text-align:center;display:flex;flex-direction:column;gap:8px}
.plan-pop{border-color:var(--primary);box-shadow:0 10px 30px rgba(0,153,168,.18)}
.pop{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--accent);color:#3b2600;
  font-size:11.5px;font-weight:800;padding:3px 10px;border-radius:999px;text-transform:uppercase}
.devices{color:var(--muted);font-size:14px}
.price{font-size:22px;font-weight:800;margin:6px 0}
.ask{font-size:16px;font-weight:600;color:var(--muted)}
.plan .btn{margin-top:auto}
.includes{list-style:none;padding:0;margin:22px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:6px;color:var(--muted);font-size:15px}
@media(max-width:640px){.includes{grid-template-columns:1fr}}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:14px 16px}
.faq summary{cursor:pointer;font-weight:600}
.faq p{margin:10px 0 0;color:var(--muted)}

/* контакты */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:30px}
@media(max-width:900px){.contact{grid-template-columns:1fr}}
.contacts{list-style:none;padding:0;font-size:16px}
.contacts li{margin-bottom:8px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.form-card label{display:block;margin-bottom:12px;font-size:14px;color:var(--muted)}
.form-card input,.form-card select,.form-card textarea{width:100%;margin-top:5px;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;font:inherit;color:var(--ink);background:#fff}
.form-card button{width:100%}
.hp{position:absolute;left:-9999px;height:0;opacity:0}
.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;border-radius:12px;padding:14px}
.err{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:12px;padding:10px 12px;margin-bottom:12px}

/* документация */
.doc{padding:32px 18px 60px;max-width:900px}
.doc h2{margin-top:34px;padding-top:10px}
.doc ul,.doc ol{color:var(--muted)}
.doc li{margin-bottom:6px}
.doc pre{background:var(--dark);color:#e6f1f8;padding:14px 16px;border-radius:12px;overflow:auto;font-size:14px}
.doc code{font-family:ui-monospace,Menlo,monospace}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 10px}
.toc a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:14px}
.doc-cta{margin-top:40px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center}

/* подвал */
.foot{background:var(--dark);color:#93a6b8;padding:26px 0;margin-top:20px}
.foot a{color:#cfe3ee}
.foot-in{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:center}

/* тарифы: «/год» рядом с ценой */
.price{display:flex;align-items:baseline;justify-content:center;gap:4px}
.price .per{font-size:13px;font-weight:600;color:var(--muted)}

/* ===== Типографика: крупнее и контрастнее (по просьбе владельца) ===== */
body{font-size:17px;line-height:1.62;font-weight:500;color:#12202f}
p{margin:0 0 14px}
h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;letter-spacing:-.2px}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:800}
h3{font-size:19.5px;font-weight:700}
.lead{font-size:19px;font-weight:500;color:#d3dee8}
.sub{font-size:17.5px;color:#43566b;font-weight:500}
.card p{font-size:16px;color:#3d4f63;line-height:1.6}
.card h3{margin-bottom:10px}
.ico{font-size:29px}
.pill{font-size:14px;font-weight:600}
.hero-points{font-size:16.5px}
.hero-points li{margin-bottom:9px}
.nav a{font-size:16px;font-weight:600}
.brand{font-size:18px}
.brand small{font-size:12px}
.btn{font-weight:700}
.btn-lg{font-size:18px}
.btn-sm{font-size:15px}
.checks li{font-size:16.5px;margin-bottom:10px}
.faq summary{font-size:17px;font-weight:700}
.faq p{font-size:16px;color:#3d4f63}
.shots figcaption{font-size:15px;color:#43566b;font-weight:500}
.plans .devices{font-size:15px;font-weight:600}
.plan .price{font-size:24px}
.plan .price .per{font-size:14px}
.muted{color:#43566b}
.tiny{font-size:13px;color:#5b6b7d}
.form-card label{font-size:15px;font-weight:600;color:#2c3d52}
.form-card input,.form-card select,.form-card textarea{font-size:16px;padding:12px 14px}
.doc{font-size:17px}
.doc ul,.doc ol{font-size:16.5px;color:#3d4f63;line-height:1.65}
.doc li{margin-bottom:8px}
.doc h2{font-size:27px}
.doc pre{font-size:15px;line-height:1.5}
.toc a{font-size:15px;font-weight:600}
.doc-cta p{font-size:17px}
.foot{font-size:15px}
.foot .tiny{font-size:13.5px;color:#8fa3b6}