/* GazTechPlus — светлая тема */
:root{
  --bg:#F7F8FA;--bg-alt:#FFFFFF;--surface:#FFFFFF;--surface-2:#F1F3F7;
  --text:#1A1D26;--text-soft:#4B5563;--muted:#8A94A6;
  --accent:#2563EB;--accent-hover:#1D4ED8;--accent-light:#EFF4FF;
  --accent-2:#7C3AED;--accent-2-light:#F3EEFF;
  --success:#16A34A;--success-light:#ECFDF3;
  --border:#E5E7EB;--border-strong:#D1D5DB;
  --radius:20px;--radius-sm:12px;
  --shadow-sm:0 1px 3px rgba(16,24,40,.06),0 1px 2px rgba(16,24,40,.04);
  --shadow:0 4px 16px rgba(16,24,40,.07),0 2px 6px rgba(16,24,40,.04);
  --shadow-lg:0 12px 32px rgba(16,24,40,.1),0 4px 10px rgba(16,24,40,.05);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}

h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(28px,7vw,54px);font-weight:900}
h2{font-size:clamp(24px,5.2vw,38px);margin-bottom:14px}
h3{font-size:clamp(18px,3.6vw,22px);font-weight:700}
p{color:var(--text-soft)}
.accent{color:var(--accent)}
.accent-2{color:var(--accent-2)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
section{padding:56px 0}
@media(min-width:768px){section{padding:80px 0}}
.section-head{max-width:720px;margin-bottom:32px}
.section-head p{font-size:16px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 26px;border-radius:999px;font-weight:700;font-size:15px;letter-spacing:.01em;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s;white-space:nowrap;text-align:center}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--accent-hover);box-shadow:0 6px 22px rgba(37,99,235,.38)}
.btn-outline{background:#fff;color:var(--text);border:1.5px solid var(--border-strong)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}

/* HEADER */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .25s,background .25s,box-shadow .25s}
.header.is-scrolled{border-bottom-color:var(--border);background:rgba(255,255,255,.96);box-shadow:0 1px 8px rgba(16,24,40,.06)}
.header__inner{height:var(--header-h);display:flex;align-items:center;gap:16px;justify-content:space-between}
.logo{display:flex;align-items:center;gap:9px;font-weight:900;font-size:19px;letter-spacing:-.03em;flex:none}
.logo__mark{width:32px;height:32px;border-radius:10px;flex:none;background:linear-gradient(140deg,var(--accent),#60A5FA);display:grid;place-items:center;color:#fff;font-size:15px;font-weight:900;box-shadow:0 3px 10px rgba(37,99,235,.3)}
.logo__mark span{transform:translateY(-1px)}
.logo__text{color:var(--text)}
.logo__text i{color:var(--accent);font-style:normal}
.header__nav{display:none}
.header__nav a{font-size:14px;font-weight:500;color:var(--text-soft);padding:8px 9px;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.header__nav a:hover,.header__nav a.active{color:var(--accent);background:var(--accent-light)}
.header__actions{display:flex;align-items:center;gap:10px}
.header__phone{display:none;font-weight:700;font-size:15px;color:var(--text);transition:color .2s;white-space:nowrap}
.header__phone:hover{color:var(--accent)}
.header__cta{display:none}
.burger{width:42px;height:42px;border-radius:11px;border:1.5px solid var(--border-strong);display:grid;place-items:center;gap:5px;padding:11px;background:#fff}
.burger span{display:block;width:100%;height:2px;background:var(--text);border-radius:2px;transition:transform .28s,opacity .2s}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:1100px){
  .header__nav{display:flex;align-items:center;gap:0}
  .header__phone{display:block}
  .header__cta{display:inline-flex}
  .burger{display:none}
  :root{--header-h:74px}
}
.mobile-menu{position:fixed;inset:var(--header-h) 0 0 0;z-index:99;background:#fff;padding:20px 16px 40px;transform:translateX(100%);opacity:0;visibility:hidden;transition:transform .3s ease,opacity .3s,visibility .3s;overflow-y:auto}
.mobile-menu.is-open{transform:translateX(0);opacity:1;visibility:visible}
.mobile-menu a{display:block;padding:15px 4px;font-size:18px;font-weight:600;border-bottom:1px solid var(--border);color:var(--text)}
.mobile-menu a:active{color:var(--accent)}
.mobile-menu__footer{margin-top:26px;display:grid;gap:12px}
@media(min-width:1100px){.mobile-menu{display:none}}

/* HERO */
.hero{position:relative;overflow:hidden;padding:40px 0 56px;background:radial-gradient(700px 400px at 90% -10%,rgba(37,99,235,.07),transparent 60%),radial-gradient(600px 360px at 5% 110%,rgba(124,58,237,.06),transparent 65%),var(--bg)}
.hero__inner{position:relative;z-index:2;display:grid;gap:36px}
@media(min-width:1024px){.hero{padding:64px 0 88px}.hero__inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:48px}}
.hero__badge{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;background:var(--success-light);border:1px solid rgba(22,163,74,.25);color:var(--success);font-size:13px;font-weight:600;margin-bottom:18px}
.hero__badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(22,163,74,.15);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(22,163,74,.18)}50%{box-shadow:0 0 0 8px rgba(22,163,74,0)}}
.hero h1{margin-bottom:16px;color:var(--text)}
.hero h1 .n2o{background:linear-gradient(100deg,var(--accent),#60A5FA);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__sub{font-size:clamp(16px,2.4vw,19px);color:var(--text-soft);max-width:560px;margin-bottom:26px}
.hero__sub b{color:var(--text);font-weight:600}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero__actions .btn{flex:1 1 220px}
@media(min-width:480px){.hero__actions .btn{flex:0 0 auto}}
.hero__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding-top:24px;border-top:1px solid var(--border);max-width:520px}
.hero__stat b{display:block;font-size:clamp(19px,4.6vw,26px);font-weight:900;color:var(--text);letter-spacing:-.03em}
.hero__stat span{font-size:12px;color:var(--muted);line-height:1.35;display:block}
@media(min-width:768px){.hero__stat span{font-size:13px}}
.hero__visual{display:flex;justify-content:center;align-items:center;position:relative;min-height:340px}
.hero__glow{position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.12),transparent 68%);filter:blur(20px)}
.cylinder{position:relative;width:150px;height:330px;background:linear-gradient(90deg,#C8D4E8 0%,#E8EDF5 18%,#FFFFFF 44%,#DDE5F0 62%,#B8C6DC 100%);border-radius:76px 76px 34px 34px / 34px 34px 18px 18px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06),0 20px 40px rgba(16,24,40,.12);animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.cylinder::before{content:"";position:absolute;top:-46px;left:50%;transform:translateX(-50%);width:44px;height:50px;background:linear-gradient(90deg,#B0BFD6,#DDE5F0,#B0BFD6);border-radius:8px 8px 4px 4px}
.cylinder::after{content:"";position:absolute;top:-70px;left:50%;transform:translateX(-50%);width:58px;height:26px;background:linear-gradient(180deg,#2563EB,#1D4ED8);border-radius:7px;box-shadow:0 4px 14px rgba(37,99,235,.3)}
.cylinder__label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100px;padding:14px 0;border-radius:12px;background:rgba(255,255,255,.92);border:1px solid rgba(37,99,235,.2);text-align:center;box-shadow:0 4px 12px rgba(16,24,40,.08)}
.cylinder__label b{display:block;font-size:24px;font-weight:900;color:var(--accent);letter-spacing:-.02em}
.cylinder__label span{font-size:10px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
@media(min-width:1024px){.hero__visual{min-height:440px}.cylinder{width:170px;height:380px}}

/* PAGE HERO */
.page-hero{background:radial-gradient(700px 400px at 90% -20%,rgba(37,99,235,.08),transparent 60%),radial-gradient(600px 360px at 5% 110%,rgba(124,58,237,.06),transparent 65%),var(--bg);padding:36px 0 32px}
.page-hero h1{margin-bottom:12px}
.page-hero p{font-size:clamp(16px,2.2vw,18px);max-width:760px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px}
.breadcrumbs a{color:var(--text-soft);transition:color .2s}
.breadcrumbs a:hover{color:var(--accent)}

/* CARDS */
.adv-grid{display:grid;gap:14px}
@media(min-width:600px){.adv-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.adv-grid{grid-template-columns:repeat(4,1fr);gap:18px}}
.adv-card,.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.adv-card:hover,.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.25)}
.adv-card__icon,.card__icon{width:44px;height:44px;border-radius:12px;background:var(--accent-light);border:1px solid rgba(37,99,235,.15);display:grid;place-items:center;margin-bottom:16px}
.adv-card__icon svg,.card__icon svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.adv-card h3,.card h3{font-size:16px;margin-bottom:8px}
.adv-card p,.card p{font-size:14px;line-height:1.55;color:var(--text-soft)}

.grid-2{display:grid;gap:16px}
@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr);gap:20px}}
.grid-3{display:grid;gap:16px}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr);gap:20px}}
.grid-4{display:grid;gap:14px}
@media(min-width:600px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr);gap:18px}}

/* PRODUCTS */
.products{display:grid;gap:16px}
@media(min-width:600px){.products{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.products{grid-template-columns:repeat(4,1fr);gap:20px}}
.product{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.product:hover{transform:translateY(-5px);border-color:rgba(37,99,235,.3);box-shadow:var(--shadow-lg)}
.product__media{position:relative;aspect-ratio:4/3;background:radial-gradient(circle at 50% 45%,rgba(37,99,235,.08),transparent 66%),linear-gradient(160deg,#F1F4F9,#E8EDF5);display:grid;place-items:center;overflow:hidden;border-bottom:1px solid var(--border);text-decoration:none}
.product__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.product:hover .product__media img{transform:scale(1.06)}
.product__media .ph{display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--muted);font-size:12px;letter-spacing:.05em}
.product__media .ph svg{width:46px;height:46px;stroke:rgba(37,99,235,.4);fill:none;stroke-width:1.4}
.product__media img + .ph{display:none}
.product__badge{position:absolute;top:12px;left:12px;z-index:2;padding:5px 11px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.badge-sale{background:var(--accent-2);color:#fff}
.badge-hit{background:var(--accent);color:#fff}
.product__body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1;gap:14px}
.product__title{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.product__title a{color:inherit}
.product__title a:hover{color:var(--accent)}
.product__note{font-size:12px;color:var(--muted);margin-top:-8px}
.product__prices{display:grid;gap:8px;margin-top:auto}
.price-row{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding:10px 13px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border)}
.price-row--sale{border-color:rgba(37,99,235,.18);background:var(--accent-light)}
.price-row__label{font-size:12px;color:var(--text-soft);text-transform:uppercase;letter-spacing:.07em;font-weight:600}
.price-row__value{font-size:19px;font-weight:900;letter-spacing:-.03em;color:var(--text)}
.price-row--exchange .price-row__value{color:var(--accent)}
.price-row--sale .price-row__value{color:var(--accent)}

/* EXTRA */
.extra{margin-top:44px}
.extra__grid{display:grid;gap:16px}
@media(min-width:768px){.extra__grid{grid-template-columns:repeat(2,1fr);gap:20px}}
.extra-card{display:flex;align-items:center;gap:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.extra-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.25)}
.extra-card__media{flex:none;width:96px;height:96px;border-radius:12px;overflow:hidden;background:linear-gradient(160deg,#F1F4F9,#E8EDF5);display:grid;place-items:center;border:1px solid var(--border)}
.extra-card__media img{width:100%;height:100%;object-fit:cover}
.extra-card__media svg{width:34px;height:34px;stroke:rgba(37,99,235,.4);fill:none;stroke-width:1.4}
.extra-card__info{flex:1;min-width:0}
.extra-card__info h3{font-size:16px;margin-bottom:4px}
.extra-card__info h3 a{color:inherit}
.extra-card__info h3 a:hover{color:var(--accent)}
.extra-card__info p{font-size:13px;margin-bottom:8px;color:var(--text-soft)}
.extra-card__price{font-size:20px;font-weight:900;color:var(--accent);letter-spacing:-.02em}

/* PRODUCT DETAIL PAGE */
.product-detail{display:grid;gap:24px}
@media(min-width:900px){.product-detail{grid-template-columns:1fr 1.15fr;gap:44px;align-items:start}}
.product-detail__media{position:relative;aspect-ratio:4/3;background:radial-gradient(circle at 50% 45%,rgba(37,99,235,.08),transparent 66%),linear-gradient(160deg,#F1F4F9,#E8EDF5);border-radius:var(--radius);display:grid;place-items:center;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow)}
.product-detail__media img{width:100%;height:100%;object-fit:cover}
.product-detail__media .ph{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);font-size:14px}
.product-detail__media .ph svg{width:80px;height:80px;stroke:rgba(37,99,235,.4);fill:none;stroke-width:1.2}
.product-detail__media img + .ph{display:none}
.product-detail__info h1{font-size:clamp(24px,4.5vw,38px);margin-bottom:12px}
.product-detail__lead{font-size:16px;color:var(--text-soft);margin-bottom:22px;line-height:1.6}
.product-detail__prices{display:grid;gap:12px;margin-bottom:22px}
.price-big{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;border-radius:var(--radius);background:var(--surface-2);border:1px solid var(--border)}
.price-big--sale{background:var(--accent-light);border-color:rgba(37,99,235,.2)}
.price-big__label{font-size:13px;color:var(--text-soft);text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.price-big__value{font-size:clamp(22px,3.5vw,28px);font-weight:900;letter-spacing:-.03em;color:var(--text)}
.price-big--exchange .price-big__value{color:var(--accent)}
.price-big--sale .price-big__value{color:var(--accent)}
.product-detail__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.product-detail__actions .btn{flex:1 1 200px}

.specs{display:grid;gap:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);margin-top:22px}
.specs__row{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px 20px;border-bottom:1px solid var(--border);font-size:14.5px}
.specs__row:last-child{border-bottom:none}
.specs__row dt{color:var(--text-soft);font-weight:500}
.specs__row dd{color:var(--text);font-weight:600;text-align:right}

/* DELIVERY */
.delivery__wrap{display:grid;gap:24px;background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:26px 20px;box-shadow:var(--shadow);position:relative;overflow:hidden}
@media(min-width:1024px){.delivery__wrap{grid-template-columns:1fr 1fr;padding:44px;gap:44px;align-items:center}}
.delivery__wrap::before{content:"";position:absolute;top:-140px;right:-140px;width:380px;height:380px;background:radial-gradient(circle,rgba(37,99,235,.06),transparent 68%);pointer-events:none}
.delivery__list{display:grid;gap:14px;position:relative}
.delivery__item{display:flex;gap:13px;align-items:flex-start}
.delivery__check{flex:none;width:24px;height:24px;border-radius:50%;background:var(--success-light);border:1px solid rgba(22,163,74,.25);display:grid;place-items:center;margin-top:2px}
.delivery__check svg{width:13px;height:13px;stroke:var(--success);fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.delivery__item p{color:var(--text);font-size:15px;line-height:1.5}
.delivery__item p span{color:var(--muted)}
.delivery__highlight{display:flex;flex-direction:column;gap:14px;align-items:flex-start;padding:24px;border-radius:var(--radius);background:linear-gradient(140deg,var(--accent-light),rgba(37,99,235,.03));border:1px solid rgba(37,99,235,.18);position:relative}
.delivery__highlight b{font-size:34px;font-weight:900;letter-spacing:-.04em;color:var(--text);line-height:1}
.delivery__highlight span{color:var(--text-soft);font-size:14px}

/* STEPS */
.steps{display:grid;gap:16px}
@media(min-width:600px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:20px}}
.step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 20px 22px;box-shadow:var(--shadow-sm);transition:border-color .25s,transform .25s,box-shadow .25s}
.step:hover{border-color:rgba(37,99,235,.3);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step__num{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-weight:900;font-size:17px;margin-bottom:16px;background:linear-gradient(140deg,var(--accent),#60A5FA);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.25)}
.step h3{font-size:17px;margin-bottom:7px}
.step p{font-size:14px;line-height:1.55;color:var(--text-soft)}

/* FAQ */
.faq__list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq__item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:border-color .25s,box-shadow .25s}
.faq__item[open]{border-color:rgba(37,99,235,.3);box-shadow:var(--shadow)}
.faq__item summary{list-style:none;cursor:pointer;padding:19px 52px 19px 20px;position:relative;font-weight:600;font-size:16px;line-height:1.4;transition:color .2s;color:var(--text)}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{color:var(--accent)}
.faq__item summary::after{content:"";position:absolute;right:22px;top:50%;width:11px;height:11px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:translateY(-70%) rotate(45deg);transition:transform .28s}
.faq__item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq__answer{padding:0 20px 22px;font-size:15px;line-height:1.65;color:var(--text-soft)}
.faq__answer b{color:var(--text)}

/* SEO */
.seo-box{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:26px 20px;box-shadow:var(--shadow-sm)}
@media(min-width:768px){.seo-box{padding:44px}}
.seo-box h2{margin-bottom:20px}
.seo-content{max-height:340px;overflow:hidden;position:relative;transition:max-height .5s ease}
.seo-content.is-open{max-height:8000px}
.seo-content::after{content:"";position:absolute;left:0;right:0;bottom:0;height:130px;background:linear-gradient(180deg,transparent,#fff);pointer-events:none;transition:opacity .3s}
.seo-content.is-open::after{opacity:0}
.seo-content h3{font-size:17px;margin:22px 0 10px;color:var(--text)}
.seo-content p{font-size:15px;line-height:1.7;margin-bottom:12px;color:var(--text-soft)}
.seo-content ul,.seo-content ol{display:grid;gap:7px;margin:12px 0 16px}
.seo-content li{font-size:15px;color:var(--text-soft);padding-left:20px;position:relative;line-height:1.6}
.seo-content li::before{content:"";position:absolute;left:2px;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.seo-content b{color:var(--text)}
.seo-toggle{margin:22px auto 0;display:flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;border:1.5px solid var(--border-strong);color:var(--text);font-weight:600;font-size:14px;transition:border-color .2s,color .2s,background .2s;background:#fff}
.seo-toggle:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}
.seo-toggle svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s}
.seo-toggle.is-open svg{transform:rotate(180deg)}

/* CTA */
.cta-box{text-align:center;padding:38px 20px;border-radius:28px;background:radial-gradient(600px 300px at 50% 0%,rgba(37,99,235,.08),transparent 65%),var(--surface);border:1px solid rgba(37,99,235,.15);box-shadow:var(--shadow)}
@media(min-width:768px){.cta-box{padding:56px 40px}}
.cta-box h2{margin-bottom:12px}
.cta-box p{max-width:560px;margin:0 auto 26px;font-size:16px}
.cta-box__actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cta-box__actions .btn{flex:1 1 240px}
@media(min-width:480px){.cta-box__actions .btn{flex:0 0 auto}}

/* FOOTER */
.footer{border-top:1px solid var(--border);padding:44px 0 100px;background:#fff}
@media(min-width:1024px){.footer{padding-bottom:44px}}
.footer__grid{display:grid;gap:30px}
@media(min-width:768px){.footer__grid{grid-template-columns:1.4fr 1fr 1fr}}
.footer__about p{font-size:14px;line-height:1.65;margin-top:14px;max-width:340px;color:var(--text-soft)}
.footer h4{font-size:14px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin-bottom:16px;font-weight:700}
.footer__links{display:grid;gap:10px}
.footer__links a,.footer__contacts a{font-size:14.5px;color:var(--text);transition:color .2s}
.footer__links a:hover,.footer__contacts a:hover{color:var(--accent)}
.footer__contacts{display:grid;gap:10px}
.footer__contacts .tel{font-size:19px;font-weight:800;color:var(--text)}
.footer__contacts .tel:hover{color:var(--accent)}
.footer__bottom{margin-top:34px;padding-top:22px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:12px;font-size:12.5px;color:var(--muted);line-height:1.6}
@media(min-width:768px){.footer__bottom{flex-direction:row;justify-content:space-between;align-items:center}}
.footer__legal{max-width:640px}

/* FLOATING */
.floating{position:fixed;right:14px;bottom:14px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;box-shadow:0 6px 20px rgba(16,24,40,.18);transition:transform .2s,box-shadow .2s}
.float-btn:hover{transform:scale(1.08);box-shadow:0 8px 26px rgba(16,24,40,.24)}
.float-btn svg{width:26px;height:26px;fill:#fff}
.float-btn--wa{background:#25D366}
.float-btn--tg{background:#2AABEE}
.float-btn--call{background:var(--accent)}
.float-btn--call svg{fill:#fff;width:24px;height:24px}
@media(min-width:1024px){.floating{right:24px;bottom:24px}}

/* ARTICLES */
.articles-grid{display:grid;gap:20px}
@media(min-width:768px){.articles-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.articles-grid{grid-template-columns:repeat(3,1fr)}}
.article-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.25)}
.article-card__cover{aspect-ratio:16/9;background:linear-gradient(135deg,#EFF4FF,#F3EEFF);display:grid;place-items:center;border-bottom:1px solid var(--border)}
.article-card__cover svg{width:52px;height:52px;stroke:rgba(37,99,235,.5);fill:none;stroke-width:1.4}
.article-card__body{padding:22px 20px;display:flex;flex-direction:column;flex:1;gap:10px}
.article-card__meta{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}
.article-card__title{font-size:18px;font-weight:800;line-height:1.3}
.article-card__title a{color:inherit}
.article-card__title a:hover{color:var(--accent)}
.article-card__excerpt{font-size:14px;color:var(--text-soft);flex:1}
.article-card__link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--accent);margin-top:6px}
.article-card__link:hover{color:var(--accent-hover)}

.article-page{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:26px 20px;box-shadow:var(--shadow-sm);max-width:920px;margin:0 auto}
@media(min-width:768px){.article-page{padding:44px}}
.article-page h1{margin-bottom:16px}
.article-page h2{font-size:clamp(20px,3.5vw,26px);margin:28px 0 12px}
.article-page h3{margin:22px 0 10px}
.article-page p{font-size:16px;line-height:1.75;margin-bottom:14px}
.article-page ul{margin:12px 0 16px}
.article-page ul li{list-style:none;font-size:16px;line-height:1.7;padding-left:22px;position:relative;margin-bottom:6px;color:var(--text-soft)}
.article-page ul li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.article-page ol{counter-reset:o;margin:12px 0 16px}
.article-page ol li{list-style:none;counter-increment:o;font-size:16px;line-height:1.7;padding-left:36px;position:relative;margin-bottom:8px;color:var(--text-soft)}
.article-page ol li::before{content:counter(o);position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:50%;background:var(--accent-light);color:var(--accent);font-size:12px;font-weight:800;display:grid;place-items:center}
.article-page__meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:20px}
.article-page__back{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);margin-top:28px}
.article-page__back:hover{color:var(--accent-hover)}

/* CONTACTS */
.contact-grid{display:grid;gap:16px}
@media(min-width:768px){.contact-grid{grid-template-columns:repeat(2,1fr)}}
.contact-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .25s,border-color .25s}
.contact-card:hover{box-shadow:var(--shadow-lg);border-color:rgba(37,99,235,.25)}
.contact-card__icon{width:44px;height:44px;border-radius:12px;background:var(--accent-light);display:grid;place-items:center;margin-bottom:14px}
.contact-card__icon svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.contact-card h3{font-size:16px;margin-bottom:8px}
.contact-card a{font-size:17px;font-weight:700;color:var(--text);transition:color .2s;display:inline-block}
.contact-card a:hover{color:var(--accent)}
.contact-card p{font-size:14px}

/* MISC */
.note{padding:16px 18px;border-radius:var(--radius-sm);background:var(--accent-light);border-left:4px solid var(--accent);font-size:14.5px;color:var(--text-soft);line-height:1.65;margin:16px 0}
.note b{color:var(--text)}
.warn{padding:16px 18px;border-radius:var(--radius-sm);background:#FEF2F2;border-left:4px solid #DC2626;font-size:14.5px;color:#7F1D1D;line-height:1.65;margin:16px 0}
.info-row{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--border)}
.info-row:last-child{border-bottom:none}
.info-row__label{font-weight:700;min-width:160px;color:var(--text);font-size:15px}
.info-row__value{color:var(--text-soft);font-size:15px}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}