/* ==========================================================================
   SEBTO — дизайн-система (modern, монохром, системные шрифты)
   ========================================================================== */
:root{
	--text:#111;
	--muted:#666;
	--line:#e5e5e5;
	--bg:#fff;
	--soft:#f7f7f8;
	--radius:10px;
	--header-h:64px;
	--font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
	--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
	--tr:.15s ease;
}

/* ---------- Reset ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img,svg,video{max-width:100%;height:auto;display:block}
button,input,textarea,select{font:inherit;color:inherit}
::selection{background:var(--text);color:#fff}

/* ---------- Базовые элементы ---------- */
a{color:var(--text);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--muted)}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible,summary:focus-visible{outline:2px solid var(--text);outline-offset:2px;border-radius:4px}
p{margin-bottom:1.5em}
main{overflow-wrap:break-word}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;letter-spacing:-.01em;margin-bottom:24px}
h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.125rem}h4{font-size:1rem}h5{font-size:.875rem}h6{font-size:.75rem}
.content a{text-decoration:underline;text-underline-offset:2px}
.content a:hover{color:var(--muted)}
ul:not([class]),ol:not([class]){margin:0 0 1.5em 1.5em}
blockquote{margin:0 0 1.5em;padding:12px 16px;border-left:3px solid var(--text);background:var(--soft);border-radius:0 8px 8px 0}
code{padding:2px 6px;background:var(--soft);border:1px solid var(--line);border-radius:6px;font-family:var(--font-mono);font-size:.9em}
pre{margin-bottom:1.5em;padding:14px;overflow-x:auto;background:var(--soft);border:1px solid var(--line);border-radius:8px}
pre code{padding:0;border:0;background:none}
hr{border:0;border-top:1px solid var(--line);margin:2em 0}
table{width:100%;border-collapse:collapse;font-size:.9rem;margin-bottom:1rem}
th,td{border:1px solid var(--line);padding:.6rem .8rem;text-align:left;vertical-align:top}
th{background:var(--soft);font-weight:600}
tbody tr:hover td{background:var(--soft)}

/* ---------- Утилиты ---------- */
.skip-link{position:fixed;top:-60px;left:8px;z-index:1300;background:var(--text);color:#fff;padding:8px 14px;font-size:.8rem;font-weight:600;border-radius:0 0 8px 8px;transition:top .2s}
.skip-link:focus{top:0;color:#fff}
.empty{padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--soft);font-size:.9rem;color:var(--muted)}
.section{padding:48px 0;border-top:1px solid var(--line)}
.intro{margin:-.5rem 0 1.5rem;max-width:60ch;color:var(--muted)}

/* ---------- Каркас ---------- */
.container{max-width:1080px;margin:0 auto;padding:0 24px}
.footer{border-top:1px solid var(--line);padding:32px 0;text-align:center}
.footer p{margin:0;font-size:.85rem;color:var(--muted)}

/* ---------- Шапка ---------- */
.header{position:sticky;top:0;z-index:1200;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{font-weight:800;font-size:1.2rem;letter-spacing:.04em}
.logo:hover{color:var(--muted)}
.nav{display:flex;gap:24px}
.nav__link{font-size:.9rem;color:var(--muted)}
.nav__link:hover{color:var(--text)}
.menu-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer;border-radius:8px}
.menu-toggle__icon{position:relative;display:block;width:22px;height:2px;background:var(--text);transition:background .2s}
.menu-toggle__icon::before,.menu-toggle__icon::after{content:'';position:absolute;left:0;width:22px;height:2px;background:var(--text);transition:.2s}
.menu-toggle__icon::before{top:-6px}
.menu-toggle__icon::after{bottom:-6px}
body.menu-open .menu-toggle__icon{background:transparent}
body.menu-open .menu-toggle__icon::before{top:0;transform:rotateZ(45deg)}
body.menu-open .menu-toggle__icon::after{bottom:0;transform:rotateZ(-45deg)}

/* ---------- Кнопки ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:8px;border:1px solid var(--text);background:var(--text);color:#fff;font-weight:600;font-size:.9rem;cursor:pointer;transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr)}
.btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.15);color:#fff}
.btn:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--text);box-shadow:none;color:var(--text)}

/* ---------- Заголовки секций / hero ---------- */
.section-title{font-size:1.6rem;font-weight:700;margin-bottom:1.5rem}
.section-title--page{margin-bottom:1.25rem}
.section-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 24px;margin-bottom:1.5rem}
.section-head .section-title{margin-bottom:0}
.section-head__link{font-size:.9rem;font-weight:600;white-space:nowrap}
.section-head__link::after{content:' →'}
.hero{padding:96px 0 72px;text-align:center}
.hero__title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.hero__text{max-width:520px;margin:0 auto 28px;font-size:1.05rem;color:var(--muted)}

/* ---------- Карточки ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.cards--posts{grid-template-columns:1fr}
.card{display:flex;flex-direction:column;gap:8px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr)}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,.08);border-color:#d0d0d0}
.card__icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:var(--soft);color:var(--text)}
.card__icon img{width:100%;height:100%;object-fit:cover;border-radius:8px;filter:grayscale(1)}
.card__title{font-size:1rem;margin:0}
.card__title a::after{content:'';position:absolute;inset:0}
.card{position:relative}
.card__link{margin-top:auto;font-size:.85rem;font-weight:600;color:var(--muted)}
.card__link::after{content:' →'}
.card:hover .card__link{color:var(--text)}

/* ---------- Преимущества ---------- */
.advantages{border-top:0}
.advantages__inner{background:var(--text);color:#fff;border-radius:16px;padding:48px 32px}
.advantages__inner .section-title{color:#fff}
.advantages__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}
.advantage__num{display:block;margin-bottom:8px;font-family:var(--font-mono);font-size:.8rem;font-weight:700;color:#888}
.advantage__title{font-size:1rem;margin-bottom:6px}
.advantage__text{margin:0;font-size:.9rem;color:#bbb}
.advantage--downside{border:1px dashed #555;border-radius:var(--radius);padding:16px}

/* ---------- Шаги работы ---------- */
.steps{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;counter-reset:step}
.steps__item{border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.steps__item::before{content:counter(step,decimal-leading-zero);counter-increment:step;display:block;margin-bottom:8px;font-family:var(--font-mono);font-size:.8rem;font-weight:700;color:var(--muted)}
.steps__title{font-size:1rem;margin-bottom:6px}
.steps__text{margin:0;font-size:.9rem;color:var(--muted)}

/* ---------- Российские технологии ---------- */
.ru-tech__layout{display:flex;align-items:flex-start;gap:16px}
.ru-tech__flag{flex-shrink:0;width:56px;height:auto;filter:grayscale(1);opacity:.7}
.ru-tech__text{margin:0;max-width:60ch;color:var(--muted)}

/* ---------- Стек технологий ---------- */
.tech-grid{display:flex;flex-wrap:wrap;gap:10px}
.tech-card{display:flex;align-items:center;gap:8px;padding:6px 16px;border:1px solid var(--line);border-radius:999px;background:var(--soft);transition:border-color var(--tr),transform var(--tr)}
.tech-card:hover{border-color:var(--text);transform:translateY(-2px)}
.tech-card__icon{width:18px;height:18px;object-fit:contain;filter:grayscale(1)}
.tech-card__name{margin:0;font-size:.85rem;font-weight:500;letter-spacing:0}

/* ---------- Задачи ---------- */
.tasks{list-style:none;display:grid;gap:8px}
.tasks__item{padding:12px 16px;border:1px solid var(--line);border-radius:8px;font-size:.95rem;transition:border-color var(--tr)}
.tasks__item:hover{border-color:var(--text)}
.tasks__item::before{content:'✓';margin-right:10px;font-weight:700}

/* ---------- FAQ ---------- */
.faq__list{display:grid;gap:8px}
.faq__item{border:1px solid var(--line);border-radius:8px;padding:0 16px;transition:border-color var(--tr)}
.faq__item:hover{border-color:#d0d0d0}
.faq__question{margin:0;font-size:1rem}
.faq__btn{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:14px 0;background:none;border:0;font-weight:600;cursor:pointer;text-align:left}
.faq__btn::after{content:'+';font-weight:400;color:var(--muted);flex-shrink:0;font-size:1.2rem}
.faq__item.is-open .faq__btn::after{content:'−'}
.faq__answer{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq__item.is-open .faq__answer{max-height:320px}
.faq__answer-text{margin:0 0 14px;font-size:.9rem;color:var(--muted)}

/* ---------- Отзывы ---------- */
.review{display:flex;flex-direction:column;gap:12px;max-width:480px;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.review__icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:var(--soft)}
.review__icon img{width:32px;height:32px;filter:grayscale(1) brightness(.3)}
.review__text{margin:0;font-size:.95rem;color:var(--muted)}
.review .btn{align-self:flex-start}

/* ---------- CTA ---------- */
.cta{border-top:0}
.cta__inner{text-align:center;padding:64px 24px;border:1px solid var(--line);border-radius:16px;background:var(--soft)}
.cta__title{margin-bottom:20px}

/* ---------- Слайдер ---------- */
.slider{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:center}
.slider__viewport{overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:thin}
.slider__track{display:flex;gap:16px;list-style:none;padding:4px 2px 12px}
.slider__slide{flex:0 0 clamp(220px,30vw,280px);scroll-snap-align:start;min-width:0}
.slider__btn{width:40px;height:40px;min-height:0;padding:0;flex-shrink:0;border-radius:50%;background:#fff;color:var(--text);border-color:var(--line);box-shadow:none}
.slider__btn:hover{border-color:var(--text);transform:none;box-shadow:none;color:var(--text)}
.slider__btn span{display:block;width:8px;height:8px;margin:0 auto;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);margin-left:calc(50% - 8px)}
.slider__btn--prev span{transform:rotate(135deg);margin-left:calc(50% - 2px)}
.slide-card{height:100%;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr)}
.slide-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,.08);border-color:#d0d0d0}
.slide-card__link{display:flex;flex-direction:column;height:100%;color:inherit}
.slide-card__link:hover{color:inherit}
.slide-card__media{aspect-ratio:16/10;background:var(--soft);overflow:hidden;border-bottom:1px solid var(--line)}
.slide-card__media img{width:100%;height:100%;object-fit:contain;object-position:center;filter:grayscale(.3)}
.slide-card__placeholder{width:100%;height:100%;min-height:140px;background:repeating-linear-gradient(45deg,#f0f0f0,#f0f0f0 2px,#f7f7f8 2px,#f7f7f8 4px)}
.slide-card__title{margin:0;padding:12px 14px;font-size:.95rem}

/* ---------- Хлебные крошки ---------- */
.breadcrumbs{margin-bottom:1.25rem}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;list-style:none}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:6px;min-width:0;max-width:100%;font-size:.85rem;color:var(--muted)}
.breadcrumbs__item:not(:last-child)::after{content:'/';color:#bbb}
.breadcrumbs__item a{color:var(--muted)}
.breadcrumbs__item a:hover{color:var(--text);text-decoration:underline;text-underline-offset:2px}
.breadcrumbs__item--current span{color:var(--text);font-weight:600}

/* ---------- Пагинация ---------- */
.pagination{margin:32px 0;text-align:center}
.pagination__list{display:inline-flex;flex-wrap:wrap;gap:6px;list-style:none}
.pagination__link{min-height:0;padding:8px 14px}
.pagination__item.is-disabled .pagination__link{background:#fff;color:#bbb;cursor:default;pointer-events:none;border-color:var(--line)}

/* ---------- Карточка записи (архив) ---------- */
.post-card{display:flex;align-items:stretch;min-height:180px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr)}
.post-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,.08);border-color:#d0d0d0}
.post-card__img{flex:0 0 240px;max-width:240px;background:var(--soft)}
.post-card__img img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%)}
.post-card__body{display:flex;flex-direction:column;justify-content:center;flex:1 1 auto;padding:16px 20px;min-width:0}
.post-card__title{font-size:1.05rem;margin-bottom:8px}
.post-card__title a:hover{text-decoration:underline;text-underline-offset:2px}
.post-card__link{margin-top:auto;align-self:flex-start;font-size:.85rem;font-weight:600;color:var(--muted)}
.post-card__link::after{content:' →'}
.post-card:hover .post-card__link{color:var(--text)}

/* ---------- Reveal-анимации ---------- */
.js .reveal{opacity:0}
.js .reveal.is-visible{opacity:1;animation:reveal-in .5s ease both}
@keyframes reveal-in{from{opacity:0;translate:0 12px}to{opacity:1;translate:0 0}}
.cards>.reveal:nth-child(2),.steps>.reveal:nth-child(2),.tasks>.reveal:nth-child(2),.tech-grid>.reveal:nth-child(2){animation-delay:.06s}
.cards>.reveal:nth-child(3),.steps>.reveal:nth-child(3),.tasks>.reveal:nth-child(3),.tech-grid>.reveal:nth-child(3){animation-delay:.12s}
.cards>.reveal:nth-child(4),.tasks>.reveal:nth-child(4),.tech-grid>.reveal:nth-child(4){animation-delay:.18s}
.cards>.reveal:nth-child(5),.tasks>.reveal:nth-child(5),.tech-grid>.reveal:nth-child(5){animation-delay:.24s}
.cards>.reveal:nth-child(6),.tech-grid>.reveal:nth-child(6){animation-delay:.3s}

/* ==========================================================================
   Адаптивность
   ========================================================================== */
@media(max-width:768px){
	.hero{padding:64px 0 48px}
	.section{padding:36px 0}
	.menu-toggle{display:flex;align-items:center;justify-content:center}
	.nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 24px 16px;box-shadow:0 12px 24px rgba(0,0,0,.06)}
	body.menu-open .nav{display:flex}
	.nav__link{padding:12px 0;border-bottom:1px solid var(--soft);font-size:1rem}
	.nav__link:last-child{border-bottom:0}
	.cards{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
	.card{padding:14px}
	.advantages__inner{padding:32px 20px}
	.cta__inner{padding:48px 16px}
	.review{max-width:none}
	table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
}
@media(max-width:700px){
	.post-card{flex-direction:column;min-height:auto}
	.post-card__img{flex:none;width:100%;max-width:100%;height:180px}
}
@media(max-width:520px){
	.slider{grid-template-columns:1fr 1fr;gap:10px}
	.slider__viewport{grid-column:1/-1}
	.slider__btn--prev{justify-self:end}
	.slider__btn--next{justify-self:start}
}
@media(max-width:400px){
	.slider__btn{display:none}
	.slider{grid-template-columns:minmax(0,1fr)}
}

/* ---------- Reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
	html{scroll-behavior:auto}
	.js .reveal{opacity:1;animation:none}
	.slider__viewport{scroll-behavior:auto}
	*,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}