:root {
  --graphite: #101820;
  --graphite-2: #17232d;
  --graphite-3: #21313d;
  --slate: #526777;
  --arctic: #86b8c8;
  --arctic-strong: #5f9fb4;
  --ice: #edf3f4;
  --mist: #f6f8f7;
  --white: #ffffff;
  --text: #1d2d37;
  --muted: #657984;
  --line: #d8e1e3;
  --line-dark: rgba(177, 204, 211, 0.2);
  --shadow: 0 24px 64px rgba(16, 24, 32, 0.1);
  --radius: 16px;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); font-family: Inter, Manrope, "Segoe UI", sans-serif; line-height: 1.68; background: var(--mist); }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
img { max-width: 100%; }
.container { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--white); padding: 10px; z-index: 100; }
.skip-link:focus { left: 8px; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(246, 248, 247, 0.93); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(205, 216, 219, 0.84); }
.nav-wrap { min-height: 82px; display: flex; align-items: center; gap: 27px; }
.brand { color: var(--graphite); font-size: 1.02rem; font-weight: 790; letter-spacing: -0.025em; line-height: 1; white-space: nowrap; flex: 0 0 auto; }
.main-nav { display: flex; gap: 24px; margin-left: auto; align-items: center; }
.main-nav a { color: #41545f; font-size: 0.88rem; font-weight: 680; white-space: nowrap; transition: color 0.2s ease; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--graphite); }
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: rgba(255, 255, 255, 0.7); }
.lang-switch button { border: 0; background: transparent; padding: 5px 9px; border-radius: 999px; color: var(--slate); font-size: 0.72rem; font-weight: 800; cursor: pointer; }
.lang-switch button.active { background: var(--graphite); color: var(--white); }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--graphite); font-size: 1.45rem; cursor: pointer; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; gap: 8px; padding: 11px 19px; border: 1px solid var(--graphite); border-radius: 9px; background: var(--graphite); color: var(--white); font-weight: 760; cursor: pointer; transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease; }
.button:hover { transform: translateY(-2px); background: var(--graphite-3); border-color: var(--graphite-3); box-shadow: 0 12px 28px rgba(16, 24, 32, 0.16); }
.button.secondary { background: transparent; color: var(--graphite); border-color: #9baeb5; }
.button.secondary:hover { background: rgba(255, 255, 255, 0.72); border-color: var(--graphite); }
.button.small { min-height: 40px; padding: 8px 14px; font-size: 0.83rem; }

.hero { position: relative; overflow: hidden; padding: 124px 0 132px; color: var(--white); background: var(--graphite); }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 49.88%, rgba(170, 207, 216, 0.04) 50%), linear-gradient(rgba(170, 207, 216, 0.045) 1px, transparent 1px); background-size: 112px 100%, 100% 84px; mask-image: linear-gradient(90deg, #000 15%, transparent 88%); }
.hero::after { content: ""; position: absolute; width: 600px; height: 600px; top: -250px; right: -120px; border-radius: 50%; background: rgba(105, 164, 183, 0.1); filter: blur(110px); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.13fr) minmax(390px, 0.87fr); gap: 84px; align-items: center; }
.eyebrow { margin: 0 0 17px; color: var(--arctic); font-size: 0.7rem; font-weight: 820; letter-spacing: 0.19em; text-transform: uppercase; }
.hero h1, .page-hero h1 { max-width: 780px; margin: 0 0 27px; font-size: clamp(2.8rem, 5.8vw, 5.3rem); line-height: 1.015; letter-spacing: -0.057em; }
.hero p { max-width: 680px; color: #b9c9cf; font-size: 1.12rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero .button { background: #e8f0f1; border-color: #e8f0f1; color: var(--graphite); }
.hero .button:hover { background: var(--white); border-color: var(--white); }
.hero .secondary { background: transparent; color: #e9f0f2; border-color: rgba(201, 221, 226, 0.42); }
.hero .secondary:hover { background: rgba(255, 255, 255, 0.07); }

.tech-visual { position: relative; min-height: 430px; isolation: isolate; }
.visual-grid { position: absolute; inset: 28px 12px; border: 1px solid rgba(154, 194, 205, 0.18); border-radius: 26px; background-image: linear-gradient(rgba(166, 202, 211, 0.09) 1px, transparent 1px), linear-gradient(90deg, rgba(166, 202, 211, 0.09) 1px, transparent 1px); background-size: 44px 44px; transform: perspective(700px) rotateY(-8deg); }
.cold-orb { position: absolute; width: 250px; height: 250px; top: 68px; left: 84px; border: 1px solid rgba(171, 213, 223, 0.33); border-radius: 50%; background: radial-gradient(circle at 40% 38%, rgba(184, 222, 230, 0.28), rgba(86, 146, 164, 0.08) 46%, transparent 69%); box-shadow: inset 0 0 50px rgba(160, 205, 216, 0.09), 0 0 70px rgba(90, 157, 177, 0.1); animation: cold-pulse 7s ease-in-out infinite; }
.cold-orb::before, .cold-orb::after { content: ""; position: absolute; border: 1px solid rgba(170, 207, 216, 0.22); border-radius: 50%; }
.cold-orb::before { inset: 30px; }
.cold-orb::after { inset: 66px; background: rgba(160, 204, 214, 0.08); }
.glass-panel { position: absolute; z-index: 2; padding: 20px; border: 1px solid rgba(191, 220, 226, 0.24); border-radius: 14px; background: linear-gradient(135deg, rgba(57, 77, 90, 0.72), rgba(30, 46, 57, 0.48)); box-shadow: 0 24px 70px rgba(0, 0, 0, 0.23); backdrop-filter: blur(14px); }
.glass-panel small { display: block; margin-bottom: 7px; color: #8fb9c5; font-size: 0.62rem; font-weight: 800; letter-spacing: 0.16em; }
.glass-panel strong { display: block; color: #edf5f6; font-size: 0.93rem; letter-spacing: -0.01em; }
.panel-primary { width: 230px; right: 4px; top: 38px; }
.panel-secondary { width: 188px; left: 14px; bottom: 42px; padding-left: 43px; }
.status-dot { position: absolute; width: 9px; height: 9px; left: 20px; top: 25px; border-radius: 50%; background: #91bec9; box-shadow: 0 0 0 5px rgba(145, 190, 201, 0.12); }
.signal { display: flex; align-items: end; gap: 5px; height: 30px; margin-top: 16px; }
.signal i { width: 3px; border-radius: 2px; background: #8dbac6; }
.signal i:nth-child(1) { height: 35%; }.signal i:nth-child(2) { height: 62%; }.signal i:nth-child(3) { height: 48%; }.signal i:nth-child(4) { height: 88%; }
.route-line { position: absolute; z-index: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(171, 211, 220, 0.62), transparent); transform-origin: left; }
.route-line span { position: absolute; width: 6px; height: 6px; top: -3px; left: 60%; border-radius: 50%; background: var(--arctic); box-shadow: 0 0 12px var(--arctic); }
.route-a { width: 330px; top: 205px; left: 38px; transform: rotate(-22deg); }
.route-b { width: 280px; top: 270px; left: 110px; transform: rotate(29deg); }
.coordinate { position: absolute; right: 27px; bottom: 21px; color: rgba(184, 211, 217, 0.48); font-size: 0.62rem; letter-spacing: 0.12em; }
@keyframes cold-pulse { 0%, 100% { transform: scale(0.98); opacity: 0.8; } 50% { transform: scale(1.03); opacity: 1; } }

.trust-bar { position: relative; z-index: 3; margin-top: -42px; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); padding: 26px 20px; border: 1px solid rgba(210, 220, 222, 0.9); border-radius: 14px; background: rgba(255, 255, 255, 0.95); box-shadow: var(--shadow); }
.trust-item { position: relative; padding: 7px 25px 7px 44px; border-right: 1px solid var(--line); color: var(--graphite-2); font-size: 0.88rem; font-weight: 760; }
.trust-item::before { content: ""; position: absolute; width: 9px; height: 9px; left: 24px; top: 14px; border: 1px solid var(--arctic-strong); border-radius: 50%; box-shadow: inset 0 0 0 2px var(--white); background: var(--arctic); }
.trust-item:last-child { border-right: 0; }

.section { padding: 106px 0; background: var(--mist); }
.section.alt { background: var(--ice); }
.section.dark { color: var(--white); background: var(--graphite-2); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 46px; margin-bottom: 46px; }
.section-head h2, .content h2 { margin: 0; font-size: clamp(2.05rem, 4vw, 3.35rem); line-height: 1.08; letter-spacing: -0.044em; }
.section-head p { max-width: 570px; margin: 0; color: var(--muted); }
.dark .section-head p { color: #a9bac1; }
.grid { display: grid; gap: 22px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.86); box-shadow: 0 8px 28px rgba(16, 24, 32, 0.035); transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease; }
.card:hover { transform: translateY(-5px); border-color: #bdcdd1; background: var(--white); box-shadow: var(--shadow); }
.card h3 { margin: 5px 0 10px; color: var(--graphite-2); font-size: 1.22rem; line-height: 1.3; }
.card p { margin: 0 0 18px; color: var(--muted); }
.dark .card { border-color: var(--line-dark); background: rgba(255, 255, 255, 0.045); }
.dark .card:hover { border-color: rgba(177, 204, 211, 0.36); background: rgba(255, 255, 255, 0.07); }
.dark .card h3 { color: var(--white); }
.dark .card p { color: #acbdc4; }
.icon { display: grid; place-items: center; width: 43px; height: 43px; margin-bottom: 20px; border: 1px solid #cbdcdf; border-radius: 11px; background: #eef4f4; color: #456c78; font-size: 0.76rem; font-weight: 830; }
.tag { display: inline-flex; align-items: center; width: max-content; padding: 4px 8px; border: 1px solid #cad9dc; border-radius: 5px; background: #f1f5f5; color: #536e77; font-size: 0.64rem; font-weight: 820; letter-spacing: 0.08em; text-transform: uppercase; }

.page-hero { padding: 92px 0 96px; color: var(--white); background: var(--graphite); }
.page-hero h1 { font-size: clamp(2.65rem, 5vw, 4.6rem); }
.page-hero p { max-width: 730px; color: #b5c5cb; font-size: 1.08rem; }
.content { max-width: 830px; }
.content h2 { margin-top: 47px; font-size: 2.05rem; }
.content h3 { margin-top: 29px; }
.content p, .content li { color: #566c78; }
.facts { overflow: hidden; border: 1px solid var(--line); border-radius: 13px; background: rgba(255, 255, 255, 0.65); }
.fact { display: grid; grid-template-columns: 205px 1fr; padding: 15px 20px; border-bottom: 1px solid var(--line); }
.fact:last-child { border: 0; }
.fact strong { color: var(--graphite); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 66px; align-items: start; }

.product-tools { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 31px; }
.filter { padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, 0.72); color: var(--slate); cursor: pointer; transition: 0.2s ease; }
.filter:hover { border-color: #9cafb5; color: var(--graphite); }
.filter.active { border-color: var(--graphite); background: var(--graphite); color: var(--white); }
.product-card { display: flex; min-height: 360px; flex-direction: column; align-items: flex-start; padding: 28px 27px 25px; }
.product-card h3 { margin-top: 18px; font-size: 1.38rem; }
.product-card p:first-of-type { min-height: 76px; }
.product-card p:nth-of-type(2) { min-height: 82px; margin-top: 1px; padding-top: 15px; border-top: 1px solid var(--line); font-size: 0.86rem; }
.product-card > .tag:nth-last-of-type(1) { margin-top: auto; }
.product-card > a:last-child { width: 100%; min-height: 42px; margin-top: 15px; padding: 9px 12px; border: 1px solid var(--graphite); border-radius: 8px; background: var(--graphite); color: var(--white); font-size: 0.84rem; font-weight: 780; text-align: center; transition: 0.2s ease; }
.product-card > a:last-child:hover { background: var(--graphite-3); transform: translateY(-1px); }
.product-card[hidden] { display: none; }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { color: var(--graphite-2); font-size: 0.88rem; font-weight: 700; }
.field input, .field select, .field textarea { padding: 12px; border: 1px solid #b9c9cd; border-radius: 8px; background: rgba(255, 255, 255, 0.88); color: var(--text); }
.field textarea { min-height: 125px; resize: vertical; }
.check { flex-direction: row; align-items: flex-start; }
.form-status { display: none; padding: 12px; border-radius: 8px; background: #e7f0f1; color: #315965; }
.notice { padding: 16px 19px; border-left: 3px solid var(--arctic-strong); background: #e9f1f2; color: #385b66; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 38px; padding: 56px; border: 1px solid #31434f; border-radius: 20px; background: var(--graphite-2); color: var(--white); }
.cta h2 { margin: 0; font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.1; letter-spacing: -0.04em; }
.cta .button { background: #e8f0f1; border-color: #e8f0f1; color: var(--graphite); }

.site-footer { padding: 68px 0 23px; background: #0b1218; color: #aab9c0; }
.footer-grid { display: grid; grid-template-columns: 1.45fr 0.9fr 0.9fr 1.45fr; gap: 44px; padding-bottom: 47px; }
.site-footer h3, .site-footer h4 { margin-top: 0; color: #edf2f3; }
.site-footer h3 { font-size: 1.05rem; letter-spacing: -0.02em; }
.footer-links { display: grid; gap: 8px; }
.footer-links a:hover { color: var(--white); }
.legal-block { font-size: 0.8rem; line-height: 1.65; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 21px; border-top: 1px solid #26323a; color: #82939c; font-size: 0.78rem; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
:focus-visible { outline: 3px solid var(--arctic); outline-offset: 3px; }

@media (max-width: 1120px) {
  .nav-wrap { gap: 19px; }
  .main-nav { gap: 17px; }
  .nav-cta { display: none; }
}
@media (max-width: 930px) {
  .main-nav { position: fixed; inset: 82px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 20px 24px 25px; border-bottom: 1px solid var(--line); background: rgba(246, 248, 247, 0.98); box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 2px; border-bottom: 1px solid #e2e8e9; }
  .menu-toggle { display: block; margin-left: auto; }
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-grid { gap: 58px; }
  .tech-visual { min-height: 390px; max-width: 540px; width: 100%; margin-inline: auto; }
  .grid.four, .grid.three { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section-head { display: block; }
  .section-head p { margin-top: 17px; }
}
@media (max-width: 600px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .nav-wrap { min-height: 74px; }
  .brand { max-width: 205px; overflow: hidden; font-size: 0.88rem; text-overflow: ellipsis; }
  .main-nav { inset: 74px 0 auto; }
  .lang-switch button { padding-inline: 7px; }
  .hero { padding: 78px 0 100px; }
  .hero h1 { font-size: 2.72rem; }
  .hero-grid { gap: 52px; }
  .tech-visual { min-height: 330px; }
  .visual-grid { inset: 20px 3px; }
  .cold-orb { width: 190px; height: 190px; top: 70px; left: 50%; transform: translateX(-50%); animation: none; }
  .panel-primary { width: 205px; right: 0; top: 23px; }
  .panel-secondary { left: 0; bottom: 22px; }
  .route-a { width: 240px; left: 20px; }.route-b { width: 225px; left: 65px; }
  .coordinate { display: none; }
  .trust-grid { grid-template-columns: 1fr; padding: 15px 20px; }
  .trust-item { border-right: 0; border-bottom: 1px solid var(--line); padding-block: 14px; }
  .trust-item:last-child { border-bottom: 0; }
  .section { padding: 76px 0; }
  .grid.four, .grid.three, .grid.two, .form { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .product-card { min-height: 0; }
  .product-card p:first-of-type, .product-card p:nth-of-type(2) { min-height: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 6px; }
  .cta { display: block; padding: 35px; }
  .cta .button { margin-top: 25px; }
  .fact { grid-template-columns: 1fr; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}