/* ===== ПРОЛАБ — сайт проектной лаборатории ===== */
:root{
  --forest:#0d3b2e;      /* тёмный лес — герой/подвал */
  --forest-2:#124a3a;    /* чуть светлее */
  --teal:#10493a;        /* глубокий бирюзово-зелёный */
  --green:#148f5b;       /* основной зелёный (кнопки) */
  --green-d:#0f7a4b;     /* тёмный зелёный (hover) */
  --lime:#7cc243;        /* лаймовый акцент */
  --lime-2:#8fce4b;
  --ink:#242a26;         /* основной текст */
  --muted:#5e6a62;       /* второстепенный текст */
  --line:#e3e9e5;        /* линии/границы */
  --bg:#ffffff;
  --bg-alt:#f3f6f4;      /* фон чередующихся секций */
  --radius:14px;
  --wrap:1160px;
  --shadow:0 10px 30px rgba(13,59,46,.09);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---- Кнопки ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;
  border:1.5px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap;
}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-d)}
.btn-outline{border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}

/* ---- Логотип ---- */
.logo{display:inline-flex;align-items:center;gap:12px}
.logo-emblem{flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1}
.logo-text b{font-size:22px;font-weight:800;letter-spacing:2px;color:#fff}
.logo-text span{font-size:9px;letter-spacing:2.7px;font-weight:600;color:#74be9a;margin-top:4px}

/* ---- Шапка ---- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(12,59,42,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;gap:28px;height:74px}
.nav{display:flex;gap:24px;margin-left:auto}
.nav a{color:#cfe0d6;font-size:15px;font-weight:500;transition:.15s}
.nav a:hover{color:#fff}
.header-contacts{display:flex;align-items:center;gap:16px}
.header-mail{color:#cfe0d6;font-size:15px;font-weight:500;transition:.15s;white-space:nowrap}
.header-mail:hover{color:#fff}
.header-phone{font-size:15px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:#fff;display:block;transition:.2s}

/* ---- Герой ---- */
.hero{
  background:
    radial-gradient(1200px 520px at 82% -10%, rgba(124,194,67,.30), transparent 60%),
    linear-gradient(160deg,var(--forest),var(--teal));
  color:#fff;padding:90px 0 74px;position:relative;overflow:hidden;
}
.hero-inner{max-width:840px}
.hero-eyebrow{text-transform:uppercase;letter-spacing:2px;font-size:13px;color:#74be9a;font-weight:600;margin-bottom:18px}
.hero-title{font-size:clamp(32px,5vw,54px);line-height:1.08;font-weight:800;letter-spacing:-.5px}
.hero-title .accent{color:#57c892}
.hero-lead{font-size:clamp(16px,2vw,19px);color:#cfe3d7;margin:22px 0 32px;max-width:660px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{list-style:none;display:flex;gap:44px;margin-top:56px;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats b{font-size:30px;font-weight:800;color:#fff;line-height:1.1}
.hero-stats span{font-size:14px;color:#a6c4b4;margin-top:4px}

/* ---- Секции ---- */
.section{padding:78px 0}
.section-alt{background:var(--bg-alt)}
.section-title{font-size:clamp(26px,3.4vw,36px);font-weight:800;letter-spacing:-.5px;color:var(--forest)}
.section-sub{color:var(--muted);font-size:17px;margin-top:10px;margin-bottom:38px;max-width:760px}

/* ---- Сетки ---- */
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

/* ---- Карточки услуг ---- */
.card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:.2s;
}
.section-alt .card{background:#fff}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfe0cc}
.card-icon{font-size:30px;margin-bottom:14px}
.card h3{font-size:19px;color:var(--forest);margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.card-pillar{padding:32px 28px}
.card-pillar .card-icon{font-size:34px}
.card .card-tags{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.card .card-tags li{font-size:12px;font-weight:600;color:var(--green-d);background:#e8f5ec;border-radius:20px;padding:3px 10px}

/* ---- Разделы проектирования (каталог) ---- */
.sys-cols{display:flex;gap:22px;align-items:flex-start}
.sys-col{flex:1 1 0;display:flex;flex-direction:column;gap:22px;min-width:0}
.sys-cat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.sys-cat-head{display:flex;align-items:center;gap:10px;margin-bottom:8px;padding-bottom:12px;border-bottom:2px solid var(--green)}
.sys-cat-head h3{font-size:16px;color:var(--forest);margin:0;line-height:1.2}
.sys-icon{font-size:22px;flex:none}
.sys-list{list-style:none;margin:0;padding:0}
.sys-list li{display:flex;gap:12px;align-items:center;min-height:44px;padding:6px 0;border-bottom:1px solid var(--line);font-size:14px}
.sys-list li:last-child{border-bottom:0}
.sys-list b{color:var(--green-d);flex:none;width:70px;font-weight:700;font-size:13px}
.sys-list span{color:var(--muted)}
@media(max-width:900px){.sys-cols{flex-wrap:wrap}.sys-col{flex:1 1 46%}}
@media(max-width:640px){.sys-col{flex:1 1 100%}}

/* ---- Процесс / этапы ---- */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 24px}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:block;font-size:15px;font-weight:800;color:var(--green);letter-spacing:1px;margin-bottom:10px;
}
.step h3{font-size:18px;color:var(--forest);margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* ---- Портфолио ---- */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.project{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:.2s;
}
.project:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfe0cc}
.project-cover{
  height:174px;display:flex;align-items:flex-end;padding:16px 18px;color:#fff;
  background:linear-gradient(150deg,var(--teal),var(--forest));position:relative;overflow:hidden;
}
.project-cover::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 200px at 88% -30%, rgba(124,194,67,.35), transparent 60%);
}
.project-cover span{position:relative;z-index:2;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#c7e6b0}
/* фото-обложки */
.project-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.project-cover.has-photo::after{background:linear-gradient(to top,rgba(11,45,35,.92),rgba(11,45,35,.12) 58%,rgba(11,45,35,.02));z-index:1}
.project-cover.has-photo span{color:#eaf6ee}
.project-cover.c2{background:linear-gradient(150deg,#1c5a4a,#0d3b2e)}
.project-cover.c3{background:linear-gradient(150deg,#245e3c,#0d3b2e)}
.project-cover.c4{background:linear-gradient(150deg,#10493a,#124a3a)}
.project-cover.c5{background:linear-gradient(150deg,#2a6a45,#0d3b2e)}
.project-body{padding:20px 22px;display:flex;flex-direction:column;flex:1}
.project-body h3{font-size:18px;color:var(--forest);margin-bottom:6px;line-height:1.25}
.project-meta{font-size:13px;color:var(--green-d);font-weight:600;margin-bottom:10px}
.project-body p{color:var(--muted);font-size:14px;margin-bottom:14px}
.project-scope{list-style:none;margin:auto 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.project-scope li{font-size:12px;font-weight:600;color:#3a4b42;background:var(--bg-alt);border:1px solid var(--line);border-radius:20px;padding:3px 10px}
@media(max-width:900px){.projects{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.projects{grid-template-columns:1fr}}

/* ---- Hero подстраницы ---- */
.page-hero{
  background:
    radial-gradient(1000px 420px at 85% -20%, rgba(124,194,67,.24), transparent 60%),
    linear-gradient(160deg,var(--forest),var(--teal));
  color:#fff;padding:56px 0 48px;
}
.page-hero .hero-eyebrow{margin-bottom:14px}
.page-hero-title{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.5px;margin:0 0 14px}
.page-hero-lead{color:#cfe3d7;font-size:17px;max-width:720px}

/* ---- Тизер-блок с кнопкой ---- */
.section-cta{text-align:center;margin-top:34px}

/* ---- Ссылка на объект в карточке ---- */
.project-link{display:inline-flex;align-items:center;gap:5px;margin-top:10px;font-size:13px;font-weight:600;color:var(--green-d)}
.project-link:hover{color:var(--green)}

/* ---- Почему мы (features) ---- */
.feature{padding:6px 4px}
.feature-ic{font-size:26px;margin-bottom:10px}
.feature h3{margin:0 0 8px;font-size:18px;color:var(--forest)}
.feature p{color:var(--muted);font-size:15px}

/* ---- Холдинг ---- */
.holding-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.2s}
.holding-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.holding-card--accent{background:var(--forest);border-color:var(--forest)}
.holding-card--accent h3,.holding-card--accent p{color:#fff}
.holding-card--accent p{color:#cfe3d7}
.holding-badge{display:inline-block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--green-d);background:#e8f5ec;padding:4px 12px;border-radius:20px;margin-bottom:14px}
.holding-card--accent .holding-badge{color:#fff;background:rgba(255,255,255,.16)}
.holding-card h3{font-size:18px;color:var(--forest);margin-bottom:8px}
.holding-card p{font-size:14px;color:var(--muted)}

/* ---- О компании ---- */
.about-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start}
.about-text p{margin-bottom:16px;color:#33443b;font-size:16px}
.about-list{list-style:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow)}
.about-list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.about-list li:last-child{border-bottom:0}
.about-list b{color:var(--forest)}

/* ---- FAQ ---- */
.faq{max-width:840px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden;transition:.2s}
.faq-item[open]{border-color:#bfe0cc;box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:600;color:var(--forest);font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:24px;line-height:1;color:var(--green);font-weight:400;flex:none}
.faq-item[open] summary::after{content:"\2212"}
.faq-a{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.65}

/* ---- CTA-полоса ---- */
.cta{background:linear-gradient(160deg,var(--forest),var(--teal));color:#fff;border-radius:20px;padding:46px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta h2{font-size:clamp(22px,3vw,30px);font-weight:800;letter-spacing:-.5px;max-width:620px}
.cta p{color:#cfe3d7;margin-top:8px;max-width:560px}
.cta .btn-primary{background:#fff;color:var(--forest)}
.cta .btn-primary:hover{background:#eaf6ee}

/* ---- СРО / допуски (тёмная полоса доверия) ---- */
.sro-band{background:linear-gradient(160deg,var(--forest),var(--teal));color:#fff;padding:60px 0}
.sro-band .section-title{color:#fff}
.sro-band .section-sub{color:#cfe3d7}
.sro-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.sro-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:22px 22px}
.sro-item .sro-ic{font-size:24px;margin-bottom:10px}
.sro-item h3{font-size:16px;color:#fff;margin-bottom:6px;line-height:1.25}
.sro-item p{font-size:13.5px;color:#bcd6c8;line-height:1.55}
.sro-item .sro-reg{display:block;margin-top:8px;font-size:12px;color:#57c892;font-weight:600;letter-spacing:.3px}
@media(max-width:900px){.sro-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.sro-grid{grid-template-columns:1fr}}

/* ---- Контакты ---- */
.contacts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.contact-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.2s}
.contact-card:not(.contact-card--static):hover{border-color:var(--green);box-shadow:var(--shadow);transform:translateY(-3px)}
.contact-label{font-size:13px;text-transform:uppercase;letter-spacing:1px;color:var(--green-d);font-weight:700}
.contact-value{font-size:17px;color:var(--forest);font-weight:600}

/* ---- Подвал ---- */
.site-footer{background:var(--forest);color:#cfe3d7;padding:48px 0 22px}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:32px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand p{margin-top:12px;font-size:14px;color:#a6c4b4;max-width:320px}
.footer-req p{font-size:14px;margin-bottom:4px}
.footer-contacts{display:flex;flex-direction:column;gap:8px}
.footer-contacts a{font-size:15px;color:#e6f2ea;font-weight:600}
.footer-contacts a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:18px;font-size:13px;color:#8fac9d}
.to-top{color:#8fac9d}
.to-top:hover{color:#fff}

/* ---- Адаптив ---- */
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .about-inner{grid-template-columns:1fr;gap:32px}
  .contacts-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .nav{position:absolute;top:74px;left:0;right:0;flex-direction:column;gap:0;background:var(--forest);padding:8px 24px 16px;border-bottom:1px solid rgba(255,255,255,.1);display:none}
  .nav--open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
  .header-contacts{display:none}
  .burger{display:flex;margin-left:auto}
  .grid-4,.grid-3,.contacts-grid,.footer-inner{grid-template-columns:1fr}
  .hero-stats{gap:28px}
  .cta{padding:32px 26px}
  .footer-bottom{flex-direction:column;gap:10px}
}