/* ============================================================
   PROJECT 150X — main.css
   Структура (§31 ТЗ): variables → base → header → buttons →
   hero → sections → cards → roadmap → faq → form → footer →
   single/archive → responsive → a11y
   ============================================================ */

/* 1. VARIABLES */
:root{
  --color-black:#0e1116;
  --color-ink:#161b22;
  --color-gray-dark:#3a434e;
  --color-gray:#f4f6f8;
  --color-border:#e4e8ed;
  --color-white:#ffffff;
  --color-accent:#0ea5a4; /* технологичный teal-акцент */
  --color-accent-dark:#0b7f7e;
  --color-accent-soft:#e6f7f6;
  --color-navy:#0b2440;
  --awesome:"Font Awesome 7 Pro","Font Awesome 6 Pro","FontAwesome",sans-serif;
  --font-main:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --wrap:1200px;
  --radius:16px;
  --shadow:0 18px 50px rgba(11,36,64,.10);
  --header-h:68px;
}

/* 2. BASE */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{font-family:var(--font-main);color:var(--color-ink);background:var(--color-white);line-height:1.65;margin:0;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-accent-dark)}
:focus-visible{outline:3px solid var(--color-accent);outline-offset:2px;border-radius:4px}
.p150x-wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.p150x-section{padding:84px 0}
.p150x-section--gray{background:var(--color-gray)}
.p150x-section--dark{background:var(--color-black);color:#eef2f5}
.p150x-section--dark .p150x-lead{color:#b9c4cf}
.p150x-kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--color-accent-dark);background:var(--color-accent-soft);border:1px solid #cdeeed;padding:6px 14px;border-radius:999px;margin-bottom:18px}
.p150x-section--dark .p150x-kicker{background:rgba(14,165,164,.15);border-color:rgba(14,165,164,.4);color:#5eead4}
.p150x-h1{font-size:clamp(40px,6vw,76px);line-height:1.02;letter-spacing:-.02em;margin:0 0 18px;font-weight:800}
.p150x-h2{font-size:clamp(28px,3.4vw,44px);line-height:1.12;letter-spacing:-.015em;margin:0 0 16px;font-weight:800}
.p150x-lead{font-size:clamp(16px,1.6vw,19px);color:var(--color-gray-dark);max-width:720px}
.p150x-center{text-align:center}
.p150x-center .p150x-lead{margin:0 auto}
.p150x-grid{display:grid;gap:22px}
.p150x-grid--3{grid-template-columns:repeat(3,1fr)}
.p150x-grid--4{grid-template-columns:repeat(4,1fr)}
.p150x-grid--2{grid-template-columns:repeat(2,1fr)}
.p150x-muted{color:var(--color-gray-dark)}

/* Font Awesome локальные иконки (§7 ТЗ): используем var(--awesome) */
.p150x-fa{font-family:var(--awesome);font-style:normal;font-weight:900;display:inline-block;line-height:1}
.p150x-fa.fa-microscope::before{content:"\f610"}
.p150x-fa.fa-compass::before{content:"\f14e"}
.p150x-fa.fa-flask::before{content:"\f0c3"}
.p150x-fa.fa-hand-holding-heart::before{content:"\f4be"}
.p150x-fa.fa-lock::before{content:"\f023"}
.p150x-fa.fa-envelope::before{content:"\f0e0"}
.p150x-fa.fa-dna::before{content:"\f471"}
.p150x-fa.fa-heart-pulse::before{content:"\f21e"}
.p150x-fa.fa-brain::before{content:"\f5dc"}
.p150x-fa.fa-shield-virus::before{content:"\e06c"}
.p150x-fa.fa-vial::before{content:"\f492"}
.p150x-fa.fa-robot::before{content:"\f544"}
.p150x-fa.fa-lungs::before{content:"\f604"}
.p150x-fa.fa-circle-check::before{content:"\f058"}
.p150x-fa.fa-arrow-right::before{content:"\f061"}
.p150x-fa.fa-phone::before{content:"\f095"}
.p150x-fa.fa-location-dot::before{content:"\f3c5"}
.p150x-fa.fa-user-lock::before{content:"\f502"}
.p150x-fa.fa-gem::before{content:"\f3a5"}
.p150x-fa.fa-route::before{content:"\f4d7"}

/* 3. BUTTONS */
.p150x-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:700;font-size:16px;padding:15px 30px;border-radius:12px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.p150x-btn--accent{background:var(--color-accent);color:#fff;box-shadow:0 10px 28px rgba(14,165,164,.35)}
.p150x-btn--accent:hover{background:var(--color-accent-dark);transform:translateY(-1px)}
.p150x-btn--ghost{background:transparent;color:var(--color-ink);border-color:var(--color-border)}
.p150x-btn--ghost:hover{border-color:var(--color-ink)}
.p150x-section--dark .p150x-btn--ghost{color:#fff;border-color:rgba(255,255,255,.3)}
.p150x-btn--small{padding:11px 20px;font-size:14px}
.p150x-btn--full{width:100%}
.p150x-btn--light{background:#fff;color:var(--color-black)}

/* 4. HEADER (sticky, §6) */
.p150x-header{position:sticky;top:0;z-index:100;height:var(--header-h);background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border);transition:box-shadow .2s ease}
.p150x-header.is-scrolled{box-shadow:0 8px 30px rgba(0,0,0,.08)}
.p150x-header__inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;height:var(--header-h);display:flex;align-items:center;gap:28px}
.p150x-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--color-black);margin-right:auto}
.p150x-logo__mark{color:var(--color-accent-dark);display:inline-flex}
.p150x-logo__text{font-weight:800;letter-spacing:.06em;font-size:17px}
.p150x-logo__text--light{color:#fff}
.p150x-logo__x{color:var(--color-accent)}
.p150x-nav__list{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.p150x-nav__list a{display:block;padding:10px 13px;border-radius:9px;text-decoration:none;color:var(--color-ink);font-weight:600;font-size:15px}
.p150x-nav__list a:hover{background:var(--color-gray)}
.p150x-header__actions{display:flex;align-items:center;gap:12px}
.p150x-burger{display:none;flex-direction:column;gap:5px;background:none;border:1px solid var(--color-border);border-radius:10px;padding:11px 12px;cursor:pointer}
.p150x-burger span{display:block;width:22px;height:2px;background:var(--color-black)}
.p150x-mobile{display:none}

/* 5. HERO (§8) */
.p150x-hero{position:relative;overflow:hidden;background:radial-gradient(1000px 500px at 85% 10%,#d9f7f5 0%,transparent 60%),radial-gradient(800px 500px at 5% 90%,#e8eef7 0%,transparent 55%),var(--color-white);padding:96px 0 80px}
.p150x-hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.p150x-hero__badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--color-accent-dark);margin-bottom:16px}
.p150x-hero__badge .p150x-fa{font-size:16px}
.p150x-hero__sub{font-size:clamp(17px,2vw,21px);color:var(--color-gray-dark);max-width:560px}
.p150x-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.p150x-hero__meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:30px;padding:0;list-style:none}
.p150x-hero__meta li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--color-gray-dark);font-weight:600}
.p150x-hero__meta .p150x-fa{color:var(--color-accent-dark)}
.p150x-hero__visual{position:relative}
.p150x-hero__visual img{border-radius:20px;box-shadow:var(--shadow);width:100%}
.p150x-hero__float{position:absolute;background:#fff;border:1px solid var(--color-border);border-radius:14px;box-shadow:var(--shadow);padding:12px 16px;font-size:13px;font-weight:700;display:flex;gap:10px;align-items:center}
.p150x-hero__float--1{top:22px;left:-18px}
.p150x-hero__float--2{bottom:26px;right:-12px}
.p150x-hero__float .p150x-fa{color:var(--color-accent-dark);font-size:18px}

/* 6. CONCEPT 150X (§9) */
.p150x-concept{background:var(--color-black);color:#fff;border-radius:26px;padding:clamp(30px,5vw,64px);display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;position:relative;overflow:hidden}
.p150x-concept::after{content:"150X";position:absolute;right:-20px;bottom:-60px;font-size:clamp(140px,22vw,300px);font-weight:800;opacity:.06;letter-spacing:-.05em}
.p150x-concept__formula{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.p150x-formula{flex:1;min-width:200px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px}
.p150x-formula b{display:block;font-size:28px}
.p150x-formula span{font-size:14px;color:#b9c4cf}
.p150x-concept__quote{font-size:clamp(18px,2vw,22px);border-left:3px solid var(--color-accent);padding-left:18px;margin:22px 0 0}

/* 7. DIRECTIONS (§10) + TECH (§21) */
.p150x-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.p150x-dir{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:26px;transition:transform .18s ease,box-shadow .18s ease}
.p150x-dir:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.p150x-dir__icon{width:52px;height:52px;border-radius:14px;background:var(--color-accent-soft);color:var(--color-accent-dark);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.p150x-dir h3{margin:0 0 8px;font-size:20px}
.p150x-dir p{margin:0;color:var(--color-gray-dark);font-size:15px}
.p150x-tech{background:var(--color-black);color:#eef2f5}
.p150x-tech .p150x-dir{background:#141a22;border-color:#232c38;color:#eef2f5}
.p150x-tech .p150x-dir p{color:#aeb9c5}
.p150x-strip{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.p150x-strip span{border:1px solid var(--color-border);background:#fff;padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600}

/* 8. RESEARCH CARDS (§11) */
.p150x-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.p150x-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.p150x-card__media{display:block;aspect-ratio:720/460;overflow:hidden;background:var(--color-gray)}
.p150x-card__media img{width:100%;height:100%;object-fit:cover}
.p150x-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.p150x-card__cat{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--color-accent-dark);text-decoration:none}
.p150x-card__title{margin:0;font-size:19px;line-height:1.35}
.p150x-card__title a{color:var(--color-ink);text-decoration:none}
.p150x-card__title a:hover{color:var(--color-accent-dark)}
.p150x-card__excerpt{margin:0;color:var(--color-gray-dark);font-size:15px}
.p150x-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--color-border);font-size:13px;color:var(--color-gray-dark)}
.p150x-card__more{font-weight:700;text-decoration:none}

/* 9. HOW / FUNDING / PRIVATE / INNER (§18–20) */
.p150x-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px;counter-reset:step}
.p150x-step{border:1px solid var(--color-border);border-radius:var(--radius);padding:24px;background:#fff;position:relative}
.p150x-step::before{counter-increment:step;content:"0" counter(step);font-weight:800;color:var(--color-accent);font-size:14px;letter-spacing:.1em}
.p150x-step h3{margin:10px 0 8px;font-size:18px}
.p150x-step p{margin:0;font-size:15px;color:var(--color-gray-dark)}
.p150x-tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.p150x-tier{border:1px solid var(--color-border);border-radius:var(--radius);padding:30px;background:#fff;display:flex;flex-direction:column;gap:12px}
.p150x-tier--featured{border:2px solid var(--color-accent);box-shadow:var(--shadow)}
.p150x-tier__price{font-size:30px;font-weight:800}
.p150x-tier ul{margin:0;padding-left:20px;color:var(--color-gray-dark);font-size:15px}
.p150x-private{background:linear-gradient(135deg,#0b2440 0%,#0e3a3a 100%);border-radius:26px;padding:clamp(30px,5vw,60px);color:#fff;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.p150x-private ul{list-style:none;padding:0;margin:20px 0;display:grid;gap:12px}
.p150x-private ul li{display:flex;gap:10px;align-items:flex-start}
.p150x-private ul .p150x-fa{color:#5eead4;margin-top:4px}
.p150x-inner{border:1px solid var(--color-border);border-radius:26px;padding:clamp(30px,5vw,60px);text-align:center;background:linear-gradient(180deg,#fafbfc,#eef2f5)}
.p150x-inner__badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--color-border);background:#fff;border-radius:999px;padding:8px 18px;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}

/* 10. ROADMAP (§22) */
.p150x-road{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-top:36px}
.p150x-road__item{border:1px solid var(--color-border);border-radius:14px;padding:20px;background:#fff;position:relative}
.p150x-road__item b{display:block;color:var(--color-accent-dark);font-size:13px;letter-spacing:.1em;margin-bottom:8px}
.p150x-road__item span{font-weight:700;font-size:15px;line-height:1.4;display:block}

/* 11. ABOUT / FAQ / CONTACTS */
.p150x-about{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.p150x-about img{border-radius:20px;box-shadow:var(--shadow)}
.p150x-check{list-style:none;padding:0;margin:20px 0;display:grid;gap:10px}
.p150x-check li{display:flex;gap:10px}
.p150x-check .p150x-fa{color:var(--color-accent-dark);margin-top:5px}
.p150x-faq{max-width:820px;margin:30px auto 0;display:grid;gap:12px;text-align:left}
.p150x-faq details{border:1px solid var(--color-border);border-radius:12px;background:#fff;padding:6px 20px}
.p150x-faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
.p150x-faq summary::-webkit-details-marker{display:none}
.p150x-faq summary::after{content:"+";font-size:22px;color:var(--color-accent-dark);font-weight:400}
.p150x-faq details[open] summary::after{content:"–"}
.p150x-faq p{color:var(--color-gray-dark);margin:0 0 16px}
.p150x-contacts{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:36px;align-items:start}
.p150x-form{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:30px;display:grid;gap:4px}
.p150x-form label{font-weight:700;font-size:14px;display:block;margin-bottom:6px}
.p150x-form input,.p150x-form textarea{width:100%;border:1px solid var(--color-border);border-radius:10px;padding:13px 15px;font-size:15px;font-family:inherit}
.p150x-form input:focus,.p150x-form textarea:focus{border-color:var(--color-accent);outline:none;box-shadow:0 0 0 3px rgba(14,165,164,.15)}
.p150x-form__ok{background:#e6f7f6;border:1px solid var(--color-accent);padding:16px 20px;border-radius:12px;font-weight:600}
.p150x-form__hint{font-size:14px;color:var(--color-gray-dark)}
.p150x-contact-card{background:var(--color-black);color:#fff;border-radius:var(--radius);padding:30px;display:grid;gap:16px}
.p150x-contact-card a{color:#5eead4}

/* 12. FOOTER (§25) */
.p150x-footer{background:var(--color-black);color:#c6d0da;margin-top:0}
.p150x-footer__grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px;padding:64px 24px 40px}
.p150x-footer__title{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#8b98a6;margin:0 0 14px;font-weight:800}
.p150x-footer__list{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.p150x-footer__list a{color:#c6d0da;text-decoration:none;font-size:15px}
.p150x-footer__list a:hover{color:#fff}
.p150x-footer__mail a{color:#5eead4;text-decoration:none}
.p150x-footer__bottom{border-top:1px solid #232c38;padding:20px 0;font-size:13px;color:#8b98a6}
.p150x-footer__bottom-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* 13. SINGLE / ARCHIVE research (§14) */
.p150x-crumbs{font-size:13px;color:var(--color-gray-dark);margin-bottom:18px}
.p150x-crumbs a{text-decoration:none}
.p150x-single{max-width:800px;margin:0 auto;padding:50px 24px 70px}
.p150x-single__cat{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--color-accent-dark)}
.p150x-single h1{font-size:clamp(30px,4vw,46px);line-height:1.12;margin:10px 0 14px;letter-spacing:-.015em}
.p150x-single__sub{font-size:19px;color:var(--color-gray-dark)}
.p150x-single__meta{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--color-gray-dark);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);padding:14px 0;margin:22px 0}
.p150x-single__cover{border-radius:18px;overflow:hidden;margin:26px 0;box-shadow:var(--shadow)}
.p150x-single__content{font-size:18px;line-height:1.75}
.p150x-single__content h2{font-size:26px;margin-top:36px}
.p150x-single__content img{border-radius:12px}
.p150x-related{max-width:var(--wrap);margin:0 auto;padding:0 24px 80px}
.p150x-archive-head{background:var(--color-gray);padding:60px 0 40px}
.p150x-archive-grid{max-width:var(--wrap);margin:0 auto;padding:36px 24px 80px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.p150x-catlist{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.p150x-catlist a{border:1px solid var(--color-border);background:#fff;padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;text-decoration:none;color:var(--color-ink)}
.p150x-catlist a.is-active{background:var(--color-black);color:#fff;border-color:var(--color-black)}
.p150x-pagination{display:flex;gap:10px;justify-content:center;padding:0 24px 70px}
.p150x-pagination .page-numbers{border:1px solid var(--color-border);border-radius:10px;padding:9px 15px;text-decoration:none;color:var(--color-ink);font-weight:600}
.p150x-pagination .current{background:var(--color-black);color:#fff;border-color:var(--color-black)}

/* 14. GP compatibility: убираем дефолтные отступы GP на наших шаблонах */
.page .p150x-page-content .entry-content,.page .p150x-page-content .entry-header{display:none}
.p150x-page{max-width:800px;margin:0 auto;padding:56px 24px 80px}
.p150x-page h1{font-size:clamp(30px,4vw,44px);letter-spacing:-.015em}
.p150x-page__content{font-size:17px;line-height:1.75}

/* 15. RESPONSIVE (§38) */
@media (max-width:1024px){
  .p150x-grid--4{grid-template-columns:repeat(2,1fr)}
  .p150x-cards{grid-template-columns:repeat(2,1fr)}
  .p150x-steps{grid-template-columns:repeat(2,1fr)}
  .p150x-road{grid-template-columns:repeat(3,1fr)}
  .p150x-archive-grid{grid-template-columns:repeat(2,1fr)}
  .p150x-grid--3{grid-template-columns:repeat(2,1fr)}
  .p150x-tiers{grid-template-columns:1fr;max-width:560px;margin-left:auto;margin-right:auto}
}
@media (max-width:860px){
  .p150x-nav,.p150x-header__actions .p150x-btn{display:none}
  .p150x-burger{display:flex}
  .p150x-hero__grid,.p150x-concept,.p150x-private,.p150x-about,.p150x-contacts{grid-template-columns:1fr}
  .p150x-hero{padding:64px 0 56px}
  .p150x-hero__float--1{left:8px}
  .p150x-hero__float--2{right:8px}
  .p150x-section{padding:60px 0}
  .p150x-footer__grid{grid-template-columns:1fr;gap:28px}
  .p150x-mobile{display:block;position:fixed;inset:0;background:#fff;z-index:200;padding:18px 24px 30px;overflow:auto}
  .p150x-mobile[hidden]{display:none}
  .p150x-mobile__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
  .p150x-mobile__close{background:none;border:1px solid var(--color-border);border-radius:10px;font-size:26px;line-height:1;width:46px;height:46px;cursor:pointer}
  .p150x-mobile__list{list-style:none;margin:0 0 22px;padding:0;display:grid;gap:4px}
  .p150x-mobile__list a{display:flex;align-items:center;gap:14px;padding:14px 10px;border-radius:12px;text-decoration:none;color:var(--color-ink);font-weight:700;font-size:18px}
  .p150x-mobile__list a:hover{background:var(--color-gray)}
  .p150x-mobile__list .p150x-fa{width:30px;text-align:center;color:var(--color-accent-dark);font-size:20px}
  body.menu-open{overflow:hidden}
}
@media (max-width:600px){
  .p150x-cards,.p150x-grid--3,.p150x-grid--2,.p150x-grid--4,.p150x-steps,.p150x-road,.p150x-archive-grid{grid-template-columns:1fr}
  .p150x-hero__cta .p150x-btn{flex:1}
  .p150x-road{grid-template-columns:1fr 1fr}
}
@media (max-width:375px){
  .p150x-road{grid-template-columns:1fr}
  .p150x-wrap{padding:0 16px}
}