/* KVS soft site styles */
:root {
  --bg: #ffffff;
  --bg-alt: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f1f2f8;
  --text: #0f1222;
  --text-2: #4a5068;
  --muted: #6b7189;
  --border: #e4e6f0;
  --brand: #4f46e5;
  --brand-2: #9333ea;
  --brand-ink: #ffffff;
  --accent: #14b8a6;
  --ring: rgba(79, 70, 229, 0.35);
  --shadow: 0 1px 2px rgba(16, 20, 40, 0.04), 0 8px 24px rgba(16, 20, 40, 0.06);
  --shadow-lg: 0 24px 60px rgba(40, 30, 120, 0.16);
  --radius: 16px;
  --radius-sm: 10px;
  --grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #a855f7 100%);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-head: 'Manrope', 'Inter', system-ui, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d17;
    --bg-alt: #10131f;
    --surface: #141828;
    --surface-2: #1b2033;
    --text: #eef0fa;
    --text-2: #b8bdd4;
    --muted: #8a90aa;
    --border: #262c44;
    --brand: #818cf8;
    --brand-2: #c084fc;
    --brand-ink: #0b0d17;
    --ring: rgba(129, 140, 248, 0.4);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
    --grad: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #c084fc 100%);
    color-scheme: dark;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1em; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.88em; background: var(--surface-2); padding: 0.15em 0.45em; border-radius: 6px; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: 6px; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 860px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.sr, .hp { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; border: 0 !important; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }
.icon { width: 1.15em; height: 1.15em; flex: none; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.5em; justify-content: center;
  padding: 0.85em 1.4em; border-radius: 999px; border: 0; cursor: pointer;
  font: 600 0.98rem/1.1 var(--font); color: #fff; background: var(--grad);
  box-shadow: 0 8px 22px rgba(79, 70, 229, 0.28); transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none !important; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(79, 70, 229, 0.36); }
.btn[disabled] { opacity: 0.7; cursor: wait; transform: none; }
.btn--ghost { background: var(--surface); color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn--ghost:hover { border-color: var(--brand); box-shadow: none; }
.btn--light { background: #fff; color: #3b2fc9; box-shadow: 0 8px 22px rgba(0, 0, 0, 0.15); }
.btn--small { padding: 0.6em 1.05em; font-size: 0.9rem; }
.link { display: inline-flex; align-items: center; gap: 0.35em; font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.actions--center { justify-content: center; }

/* header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font: 800 1.25rem var(--font-head); letter-spacing: -0.02em; text-decoration: none !important; }
.logo b { font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-left: 2px; }
.logo__mark { width: 36px; height: 36px; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav > a:not(.btn) { color: var(--text-2); font-weight: 500; padding: 8px 12px; border-radius: 999px; text-decoration: none; }
.nav > a:not(.btn):hover, .nav > a[aria-current='page'] { color: var(--text); background: var(--surface-2); }
.nav .lang { display: inline-flex; align-items: center; gap: 6px; font-weight: 600 !important; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 10px; width: 42px; height: 42px; align-items: center; justify-content: center; cursor: pointer; }
.nav-toggle .icon { width: 22px; height: 22px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute; left: 0; right: 0; top: 68px; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 12px 20px 20px; background: var(--bg); border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav .btn { margin-top: 8px; }
}

/* hero */
.hero, .product-hero, .page-head--hero { position: relative; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 400px at 85% 10%, color-mix(in srgb, var(--brand-2) 22%, transparent), transparent 70%),
    radial-gradient(500px 380px at 10% 0%, color-mix(in srgb, var(--brand) 20%, transparent), transparent 70%),
    radial-gradient(420px 300px at 60% 100%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%);
}
.hero__bg::after {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px; opacity: 0.35;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 70%);
}
.hero__bg--soft { opacity: 0.7; }
.hero__inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; padding: 88px 20px 96px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
  font-size: 0.85rem; font-weight: 600; color: var(--brand); background: color-mix(in srgb, var(--brand) 10%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent); margin-bottom: 20px;
}
.eyebrow--light { color: #fff; background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.25); }
.hero h1 { max-width: 14ch; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--text-2); max-width: 60ch; margin-bottom: 28px; }
.center .lead { margin-left: auto; margin-right: auto; }
.stats { display: flex; flex-wrap: wrap; gap: 36px; margin: 40px 0 0; }
.stats div { display: flex; flex-direction: column; }
.stats dt { font: 800 2rem/1 var(--font-head); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats dd { margin: 6px 0 0; color: var(--muted); font-size: 0.92rem; }

.hero__visual { position: relative; height: 440px; }
.hero__glow { position: absolute; inset: 15% 10%; border-radius: 50%; background: var(--grad); filter: blur(70px); opacity: 0.35; }
.float-card {
  position: absolute; display: flex; align-items: center; gap: 12px; padding: 12px 18px 12px 12px;
  background: color-mix(in srgb, var(--surface) 86%, transparent); border: 1px solid var(--border); border-radius: 18px;
  box-shadow: var(--shadow-lg); backdrop-filter: blur(10px); color: var(--text); text-decoration: none !important;
  animation: float 7s ease-in-out infinite; transition: transform 0.2s;
}
.float-card img { width: 44px; height: 44px; border-radius: 12px; }
.float-card span { display: flex; flex-direction: column; line-height: 1.25; }
.float-card b { font: 700 0.98rem var(--font-head); white-space: nowrap; }
.float-card small { color: var(--muted); font-weight: 600; }
.float-card--0 { top: 2%; left: 6%; }
.float-card--1 { top: 16%; right: 0; animation-delay: -1.5s; }
.float-card--2 { top: 38%; left: 0; animation-delay: -3s; }
.float-card--3 { top: 54%; right: 6%; animation-delay: -4.5s; }
.float-card--4 { bottom: 18%; left: 2%; animation-delay: -2.2s; }
.float-card--5 { bottom: 0; right: 4%; animation-delay: -5.2s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@media (prefers-reduced-motion: reduce) { .float-card { animation: none; } html { scroll-behavior: auto; } }

@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; padding: 56px 20px 64px; }
  .hero__visual { height: 340px; }
}
@media (max-width: 560px) {
  .hero__visual { display: none; }
  .stats { gap: 24px; }
}

/* sections */
.section { padding: 80px 0; }
.section--tight { padding: 40px 0 72px; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section__title { margin-bottom: 28px; }
.section__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 28px; flex-wrap: wrap; }
.section__head .section__title { margin-bottom: 6px; }
.section__head p { margin: 0; }
.page-head { padding: 64px 0 24px; }
.page-head--hero { padding: 96px 0 72px; }

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--4, .grid--3 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }

.feature { padding: 4px 0; }
.feature__icon {
  display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 14px; margin-bottom: 16px;
  color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--brand) 20%, transparent);
}
.feature__icon .icon { width: 22px; height: 22px; }
.feature p, .cat-card p, .product-card p { color: var(--text-2); margin: 0; }
.section--alt .feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }

.product-card, .cat-card {
  display: flex; flex-direction: column; gap: 10px; padding: 24px; color: var(--text); text-decoration: none !important;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.product-card:hover, .cat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); }
.product-card__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.product-card img { width: 56px; height: 56px; border-radius: 14px; }
.product-card h3, .cat-card h3 { margin: 0; }
.product-card p { flex: 1; }
.more { display: inline-flex; align-items: center; gap: 6px; color: var(--brand); font-weight: 600; font-size: 0.94rem; margin-top: 6px; }
.price { font: 800 1.08rem var(--font-head); padding: 4px 12px; border-radius: 999px; background: var(--surface-2); }
.price--free { color: #0f766e; background: color-mix(in srgb, var(--accent) 16%, var(--surface)); }
@media (prefers-color-scheme: dark) { .price--free { color: #5eead4; } }
.tag {
  align-self: flex-start; display: inline-block; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); text-decoration: none !important;
}
.pill { display: inline-block; font-size: 0.85rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); margin: 0 6px 6px 0; }

/* custom band */
.band {
  display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 48px; border-radius: 28px; color: #fff;
  background: radial-gradient(500px 300px at 90% 0%, rgba(255, 255, 255, 0.18), transparent 70%), var(--grad);
  box-shadow: var(--shadow-lg);
}
.band h2 { color: #fff; margin-bottom: 10px; }
.band p { color: rgba(255, 255, 255, 0.88); max-width: 62ch; margin: 0; }
@media (max-width: 760px) { .band { flex-direction: column; align-items: flex-start; padding: 32px 24px; } }

/* faq */
.faq { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); margin-bottom: 12px; }
.faq summary { cursor: pointer; padding: 18px 22px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 1.4rem; line-height: 1; color: var(--brand); }
.faq[open] summary::after { content: '−'; }
.faq p { padding: 0 22px 18px; margin: 0; color: var(--text-2); }

/* catalog */
.toolbar { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.search { position: relative; display: flex; align-items: center; max-width: 520px; }
.search .icon { position: absolute; left: 16px; color: var(--muted); }
.search input { width: 100%; padding: 14px 18px 14px 46px; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 999px; box-shadow: var(--shadow); }
.search input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px var(--ring); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: 600 0.9rem var(--font); color: var(--text-2); background: var(--surface); border: 1px solid var(--border); padding: 8px 16px; border-radius: 999px; cursor: pointer; }
.chip:hover { border-color: var(--brand); color: var(--text); }
.chip[aria-pressed='true'] { color: #fff; background: var(--grad); border-color: transparent; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* product */
.product-hero { padding: 28px 0 64px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 0.9rem; color: var(--muted); margin-bottom: 32px; }
.crumbs a { color: var(--muted); }
.crumbs .icon { width: 14px; height: 14px; }
.product-hero__grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: start; }
.product-hero__title { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.product-hero__title img { width: 72px; height: 72px; border-radius: 18px; box-shadow: var(--shadow); }
.product-hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
.product-hero__shot { display: block; border-radius: 18px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-lg); background: var(--surface); }
.buy { padding: 22px; display: flex; flex-direction: column; gap: 16px; margin-bottom: 22px; }
.buy__price { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.buy__price strong { font: 800 2.2rem/1 var(--font-head); }
.versions { display: flex; flex-wrap: wrap; gap: 8px; font-size: 0.88rem; }
.versions a { padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2); }
.versions a:hover { border-color: var(--brand); color: var(--brand); text-decoration: none; }
.meta { display: grid; gap: 10px; margin: 0; }
.meta div { display: grid; grid-template-columns: 160px 1fr; gap: 12px; align-items: baseline; }
.meta dt { color: var(--muted); font-size: 0.92rem; }
.meta dd { margin: 0; }
.prose { font-size: 1.12rem; color: var(--text-2); }
@media (max-width: 960px) { .product-hero__grid { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .meta div { grid-template-columns: 1fr; gap: 2px; } .buy .btn { width: 100%; white-space: normal; } }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .gallery { grid-template-columns: 1fr; } }
.shot { display: flex; flex-direction: column; gap: 10px; color: var(--text-2); font-size: 0.92rem; text-decoration: none !important; }
.shot img { border-radius: 12px; border: 1px solid var(--border); box-shadow: var(--shadow); aspect-ratio: 1400 / 820; object-fit: cover; object-position: top; transition: transform 0.18s; }
.shot:hover img { transform: scale(1.015); }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 96vw; max-height: 96vh; overflow: visible; }
.lightbox::backdrop { background: rgba(6, 8, 18, 0.86); backdrop-filter: blur(4px); }
.lightbox figure { margin: 0; }
.lightbox img { max-width: 92vw; max-height: 84vh; border-radius: 12px; }
.lightbox figcaption { color: #e5e7f5; text-align: center; margin-top: 12px; }
.lightbox button { position: fixed; display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer; background: rgba(255, 255, 255, 0.14); color: #fff; }
.lightbox button:hover { background: rgba(255, 255, 255, 0.26); }
.lightbox__close { top: 18px; right: 18px; }
.lightbox__nav--prev { left: 18px; top: 50%; }
.lightbox__nav--next { right: 18px; top: 50%; }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.step p { color: var(--text-2); margin: 0; }
.step__num { display: inline-flex; width: 40px; height: 40px; border-radius: 12px; align-items: center; justify-content: center; font: 800 1.1rem var(--font-head); color: #fff; background: var(--grad); margin-bottom: 16px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }

/* form */
.form { padding: 36px; }
.form__intro h2 { margin-bottom: 6px; }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 24px 0; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; font-weight: 600; color: var(--text-2); }
.form .span-2 { grid-column: span 2; }
.form input, .form select, .form textarea {
  font: inherit; font-weight: 400; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; width: 100%;
}
.form textarea { resize: vertical; min-height: 130px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px var(--ring); }
.form__footer { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.form__status { margin: 18px 0 0; padding: 14px 16px; border-radius: var(--radius-sm); font-weight: 500; }
.form__status.is-ok { background: color-mix(in srgb, var(--accent) 14%, var(--surface)); color: var(--text); }
.form__status.is-error { background: color-mix(in srgb, #ef4444 12%, var(--surface)); color: var(--text); }
@media (max-width: 640px) { .form { padding: 24px 18px; } .form__grid { grid-template-columns: 1fr; } .form .span-2 { grid-column: auto; } }

.contact-mail { display: inline-flex; align-items: center; gap: 16px; padding: 18px 24px; color: var(--text); text-decoration: none !important; margin-top: 8px; }
.contact-mail .icon { width: 28px; height: 28px; color: var(--brand); }
.contact-mail span { display: flex; flex-direction: column; }
.contact-mail b { font-size: 1.05rem; word-break: break-all; }
.notfound > div + div { margin-top: 48px; padding-top: 48px; border-top: 1px solid var(--border); }

/* footer */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 56px 0 28px; margin-top: 40px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.footer__title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 14px; }
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer__list a { color: var(--text-2); }
.footer__mail { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; word-break: break-all; }
.logo--footer { margin-bottom: 12px; }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); font-size: 0.85rem; color: var(--text-2); }
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr; } }