:root {
  --ink: #101820;
  --ink-soft: #26323b;
  --paper: #f2f0eb;
  --white: #ffffff;
  --muted: #6d767c;
  --line: #d8d9d6;
  --orange: #ef5b2a;
  --orange-dark: #c94015;
  --green: #38c279;
  --content: 1180px;
  --shadow: 0 24px 70px rgba(7, 16, 22, .18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif; font-size: 16px; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
:focus-visible { outline: 3px solid #ff8a56; outline-offset: 4px; }
.container { width: min(calc(100% - 48px), var(--content)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 14px; background: var(--white); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; color: var(--white); border-bottom: 1px solid rgba(255,255,255,.15); transition: background .25s ease, box-shadow .25s ease; }
.site-header.scrolled { background: rgba(16,24,32,.96); box-shadow: 0 12px 36px rgba(0,0,0,.16); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; background: var(--orange); color: var(--white); border-radius: 4px 12px 4px 4px; font-size: 21px; font-weight: 900; line-height: 1; }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { letter-spacing: .12em; font-size: 17px; }
.brand-copy small { margin-top: 6px; color: rgba(255,255,255,.55); font: 600 8px/1 Arial, sans-serif; letter-spacing: .16em; }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; }
.site-nav > a { position: relative; min-height: 44px; display: inline-flex; align-items: center; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; bottom: 7px; width: 100%; height: 1px; background: var(--orange); transform: scaleX(0); transform-origin: right; transition: transform .22s ease; }
.site-nav > a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding: 0 20px; border: 1px solid rgba(255,255,255,.4); border-radius: 3px; }
.nav-cta:hover { background: var(--white); color: var(--ink); }
.header-language { position: relative; }
.header-language summary { min-height: 44px; display: inline-flex; align-items: center; gap: 7px; padding: 0 4px; color: inherit; cursor: pointer; list-style: none; font-size: 13px; font-weight: 700; }
.header-language summary::-webkit-details-marker { display: none; }
.header-language summary::after { content: ""; width: 6px; height: 6px; margin-top: -3px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); transition: transform .2s ease; }
.header-language[open] summary::after { margin-top: 3px; transform: rotate(225deg); }
.header-language-menu { position: absolute; z-index: 120; top: calc(100% + 8px); right: 0; min-width: 150px; padding: 8px; color: var(--ink); border: 1px solid var(--line); background: #fff; box-shadow: 0 18px 46px rgba(16,24,32,.16); }
.header-language-menu a { min-height: 42px; display: flex; align-items: center; justify-content: space-between; padding: 0 12px; font-size: 13px; }
.header-language-menu a:hover, .header-language-menu a[aria-current="page"] { color: #2457e6; background: #eef3ff; }
.header-language-menu a[aria-current="page"]::after { content: "✓"; font-weight: 800; }
.header-inner > .header-language { flex: 0 0 auto; margin-left: -14px; padding-left: 16px; border-left: 1px solid rgba(104,117,138,.28); }
.header-inner > .header-language summary { padding-inline: 10px; color: inherit; }
.site-nav.has-language-menu > .language-link { display: none; }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 11px 8px; cursor: pointer; }
.menu-button span { display: block; height: 2px; background: var(--white); margin: 6px 0; transition: transform .2s, opacity .2s; }

.hero { min-height: 780px; height: 100svh; color: var(--white); position: relative; display: flex; align-items: center; overflow: hidden; background: var(--ink); }
.hero-media, .hero-overlay { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-overlay { background: linear-gradient(90deg, rgba(8,14,19,.96) 0%, rgba(8,14,19,.88) 42%, rgba(8,14,19,.48) 74%, rgba(8,14,19,.3) 100%), linear-gradient(0deg, rgba(8,14,19,.5), transparent 55%); }
.hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .8fr; align-items: center; gap: 70px; padding-top: 88px; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.7); font-size: 13px; letter-spacing: .13em; }
.eyebrow span { width: 34px; height: 2px; background: var(--orange); }
.hero h1 { margin: 28px 0 24px; font-size: clamp(52px, 6.3vw, 92px); line-height: 1.08; letter-spacing: -.055em; font-weight: 800; }
.hero h1 em { color: var(--orange); font-style: normal; }
.hero-copy > p { max-width: 660px; margin: 0; color: rgba(255,255,255,.75); font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 0 24px; border-radius: 3px; font-weight: 700; font-size: 15px; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--orange); }
.button-primary:hover { background: var(--orange-dark); }
.button-dark { color: var(--white); background: var(--ink); }
.button-dark:hover { background: #293640; }
.button-ghost { border: 1px solid rgba(255,255,255,.35); }
.button-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.7); }
.hero-proof { display: flex; gap: 0; margin-top: 52px; }
.hero-proof > div { min-width: 124px; padding-right: 30px; margin-right: 30px; border-right: 1px solid rgba(255,255,255,.18); display: grid; }
.hero-proof > div:last-child { border: 0; }
.hero-proof strong { font: 700 30px/1 Arial, sans-serif; letter-spacing: -.04em; }
.hero-proof span { margin-top: 8px; color: rgba(255,255,255,.55); font-size: 12px; }

.live-card { align-self: end; margin-bottom: 88px; padding: 22px; background: rgba(247,249,250,.95); color: var(--ink); border-radius: 8px; box-shadow: var(--shadow); backdrop-filter: blur(10px); transform: rotate(-1deg); }
.live-card-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid #dfe3e5; font-size: 13px; font-weight: 800; }
.live-card-head > div { display: flex; align-items: center; gap: 8px; }
.live-card-head > span { color: #238b58; font-size: 11px; }
.status-dot { width: 8px; height: 8px; background: var(--green); border-radius: 50%; box-shadow: 0 0 0 4px rgba(56,194,121,.13); }
.live-kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 16px; background: #dfe3e5; border: 1px solid #dfe3e5; }
.live-kpis > div { padding: 16px; background: var(--white); display: grid; }
.live-kpis small, .live-kpis span { color: #7d868c; font-size: 10px; }
.live-kpis strong { margin: 4px 0 2px; font: 700 28px/1 Arial, sans-serif; }
.line-row { padding: 19px 2px 16px; }
.line-meta { display: flex; justify-content: space-between; font-size: 11px; }
.progress { height: 6px; margin-top: 9px; background: #dfe3e5; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--orange); }
.scan-feed { border-top: 1px solid #dfe3e5; }
.scan-feed > div { display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid #e5e8ea; }
.scan-icon { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: #187b4b; background: #daf4e7; font-weight: 900; font-size: 12px; }
.scan-icon.warning { color: #b23913; background: #ffe5db; }
.scan-feed p { margin: 0; display: grid; line-height: 1.35; }
.scan-feed strong { font-size: 11px; }
.scan-feed small, .scan-feed time { color: #8a9297; font-size: 9px; }
.live-card-foot { display: flex; justify-content: space-between; padding-top: 14px; color: #7a8389; font-size: 9px; }
.live-card-foot span:first-child { display: flex; align-items: center; gap: 6px; color: #238b58; }
.live-card-foot i { width: 5px; height: 5px; background: var(--green); border-radius: 50%; }
.scroll-cue { position: absolute; z-index: 3; left: 50%; bottom: 20px; display: grid; place-items: center; gap: 7px; color: rgba(255,255,255,.45); font: 600 8px/1 Arial,sans-serif; letter-spacing: .24em; transform: translateX(-50%); }
.scroll-cue span { width: 1px; height: 26px; background: rgba(255,255,255,.45); }

.section { padding: 118px 0; }
.section-heading { margin-bottom: 58px; }
.section-heading h2 { margin: 14px 0 0; font-size: clamp(38px, 4.6vw, 64px); line-height: 1.15; letter-spacing: -.045em; }
.section-index { display: inline-flex; align-items: center; gap: 10px; color: var(--orange); font: 700 14px/1.5 Arial, sans-serif; letter-spacing: .055em; text-transform: none; }
.section-index::before { content: ""; flex: 0 0 auto; width: 3px; height: 17px; background: currentColor; }
.section-index.light { color: #ff7d4f; }
.split-heading { display: grid; grid-template-columns: 1fr .76fr; gap: 100px; align-items: end; }
.split-heading > p { margin: 0 0 6px; color: var(--muted); font-size: 17px; line-height: 1.9; }

.intro { background: var(--paper); }
.system-grid { display: grid; grid-template-columns: 1.08fr 1fr 1fr; gap: 16px; }
.system-card { min-height: 390px; position: relative; padding: 34px; background: var(--white); border-top: 3px solid var(--ink); display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.system-card:hover { transform: translateY(-6px); box-shadow: 0 22px 50px rgba(23,30,35,.1); }
.system-card.dark { color: var(--white); background: var(--ink); border-color: var(--orange); }
.card-no { color: #989fa3; font: 700 11px/1 Arial,sans-serif; }
.system-icon { margin: 45px 0 24px; }
.system-icon svg { width: 48px; height: 48px; fill: none; stroke: var(--orange); stroke-width: 1.7; }
.system-card h3 { margin: 0 0 14px; font-size: 24px; }
.system-card p { margin: 0; color: var(--muted); font-size: 14px; }
.system-card.dark p { color: rgba(255,255,255,.62); }
.meta { margin-top: auto; padding-top: 22px; color: #92999e; font: 700 9px/1 Arial,sans-serif; letter-spacing: .12em; }

.workflow { color: var(--white); background: var(--ink); overflow: hidden; }
.workflow .section-heading { max-width: 760px; }
.workflow-grid { display: grid; grid-template-columns: repeat(6, 1fr); position: relative; }
.workflow-grid::before { content: ""; position: absolute; left: 5%; right: 5%; top: 27px; height: 1px; background: rgba(255,255,255,.16); }
.flow-step { position: relative; padding: 0 22px 0 0; }
.flow-step > span { position: relative; z-index: 2; width: 54px; height: 54px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); border: 1px solid rgba(255,255,255,.28); color: var(--orange); font: 800 12px/1 Arial,sans-serif; }
.flow-step h3 { margin: 24px 0 10px; font-size: 18px; }
.flow-step p { margin: 0; color: rgba(255,255,255,.5); font-size: 13px; line-height: 1.7; }

.capabilities { background: #f8f8f6; }
.capability-layout { display: grid; grid-template-columns: 1fr .9fr; gap: 76px; align-items: stretch; }
.capability-list { border-top: 1px solid var(--line); }
.capability-item { display: grid; grid-template-columns: 54px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.capability-item > span { color: var(--orange); font: 800 11px/1 Arial,sans-serif; padding-top: 7px; }
.capability-item h3 { margin: 0 0 7px; font-size: 20px; }
.capability-item p { margin: 0; color: var(--muted); font-size: 14px; }
.capability-image { margin: 0; min-height: 590px; position: relative; overflow: hidden; }
.capability-image img { width: 100%; height: 100%; object-fit: cover; }
.capability-image figcaption { position: absolute; inset: auto 20px 20px; padding: 20px; color: var(--white); background: rgba(16,24,32,.88); backdrop-filter: blur(8px); display: grid; }
.capability-image figcaption strong { font-size: 17px; }
.capability-image figcaption span { color: rgba(255,255,255,.6); font-size: 12px; }

.comparison { color: var(--white); background: #202c34; }
.comparison-layout { display: grid; grid-template-columns: .68fr 1.32fr; gap: 90px; align-items: center; }
.comparison-copy h2 { margin: 18px 0 24px; font-size: clamp(36px, 4vw, 58px); line-height: 1.17; letter-spacing: -.04em; }
.comparison-copy p { color: rgba(255,255,255,.58); }
.text-link { display: inline-flex; gap: 34px; align-items: center; margin-top: 18px; color: #ff8155; font-weight: 700; }
.comparison-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 620px; font-size: 13px; }
th { padding: 18px 16px; color: rgba(255,255,255,.48); text-align: left; font-size: 11px; letter-spacing: .08em; border-bottom: 1px solid rgba(255,255,255,.2); }
th:last-child { color: #ff8155; background: rgba(239,91,42,.08); }
td { padding: 20px 16px; border-bottom: 1px solid rgba(255,255,255,.11); color: rgba(255,255,255,.58); }
td:first-child { color: var(--white); font-weight: 700; }
td:last-child { color: var(--white); background: rgba(239,91,42,.08); }
td strong { color: #ff9b78; }

.deployment { background: var(--paper); }
.deployment-layout { display: grid; grid-template-columns: 1fr .8fr; gap: 100px; align-items: center; }
.deployment-copy h2 { margin: 16px 0 24px; font-size: clamp(38px, 4.2vw, 60px); line-height: 1.15; letter-spacing: -.045em; }
.deployment-copy > p { color: var(--muted); font-size: 16px; }
.deployment-copy ul { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 12px; }
.deployment-copy li { display: flex; align-items: center; gap: 11px; font-size: 14px; }
.deployment-copy li span { width: 22px; height: 22px; display: grid; place-items: center; background: #d9eee3; color: #177a48; border-radius: 50%; font-weight: 900; font-size: 11px; }
.deployment-visual { min-height: 520px; position: relative; background: #e8e7e2; border: 1px solid #d4d4cf; overflow: hidden; }
.deployment-visual::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(16,24,32,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(16,24,32,.05) 1px, transparent 1px); background-size: 28px 28px; }
.network-label { position: absolute; top: 24px; left: 24px; color: #778087; font: 700 10px/1 Arial,sans-serif; letter-spacing: .15em; }
.network-node { position: absolute; z-index: 2; display: grid; background: var(--white); box-shadow: 0 14px 30px rgba(16,24,32,.12); }
.network-node span { color: var(--orange); font: 800 9px/1 Arial,sans-serif; letter-spacing: .12em; }
.network-node strong { font-size: 17px; }
.network-node small { color: #7e878c; font-size: 10px; }
.server { left: 50%; top: 86px; width: 210px; height: 150px; padding: 26px; transform: translateX(-50%); align-content: center; gap: 9px; border-top: 4px solid var(--orange); }
.pda { bottom: 74px; width: 125px; height: 102px; padding: 18px; align-content: center; gap: 7px; border-left: 3px solid var(--ink); }
.pda strong { font-size: 14px; }
.pda-a { left: 7%; }.pda-b { left: 50%; transform: translateX(-50%); }.pda-c { right: 7%; }
.network-line { position: absolute; z-index: 1; left: 50%; top: 236px; width: 1px; height: 108px; background: #a3a8a9; transform-origin: top; }
.network-line::after { content: ""; position: absolute; bottom: -3px; left: -3px; width: 7px; height: 7px; background: var(--orange); border-radius: 50%; }
.line-a { transform: rotate(55deg); height: 158px; }.line-c { transform: rotate(-55deg); height: 158px; }.line-b { height: 108px; }

.russia-entry { background: #e7e4de; }
.russia-entry-layout { display: grid; grid-template-columns: 1fr .72fr; gap: 90px; align-items: center; }
.russia-entry-copy h2 { margin: 16px 0 24px; font-size: clamp(40px, 4.5vw, 62px); line-height: 1.14; letter-spacing: -.045em; }
.russia-entry-copy > p { max-width: 660px; color: var(--muted); font-size: 17px; }
.keyword-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 32px; }
.keyword-chips span { padding: 7px 12px; color: #4f5a61; background: rgba(255,255,255,.62); border: 1px solid rgba(16,24,32,.1); border-radius: 2px; font-size: 11px; }
.russia-entry-panel { padding: 34px; color: var(--white); background: var(--ink); box-shadow: var(--shadow); }
.russia-entry-panel > div { position: relative; padding: 24px 24px 24px 64px; background: #17222a; border-left: 3px solid var(--orange); display: grid; }
.russia-entry-panel > div::before { content: ""; position: absolute; left: 24px; top: 50%; width: 18px; height: 18px; border: 2px solid #ff8459; transform: translateY(-50%); }
.russia-entry-panel small { color: var(--orange); font: 800 9px/1 Arial,sans-serif; letter-spacing: .14em; }
.russia-entry-panel strong { margin: 7px 0 2px; font-size: 17px; }
.russia-entry-panel span { color: rgba(255,255,255,.58); font-size: 11px; }
.russia-entry-panel > i { display: block; padding: 4px 0; color: rgba(255,255,255,.35); text-align: center; font-style: normal; }

.cta { min-height: 590px; position: relative; display: flex; align-items: center; color: var(--white); overflow: hidden; }
.cta-media, .cta-overlay { position: absolute; inset: 0; }
.cta-media img { width: 100%; height: 100%; object-fit: cover; }
.cta-overlay { background: linear-gradient(90deg, rgba(10,17,22,.95) 0%, rgba(10,17,22,.88) 48%, rgba(10,17,22,.35) 100%); }
.cta-content { position: relative; z-index: 2; }
.cta h2 { margin: 18px 0; font-size: clamp(48px, 6vw, 80px); line-height: 1.08; letter-spacing: -.05em; }
.cta p { max-width: 600px; color: rgba(255,255,255,.65); font-size: 17px; }
.contact-row { display: flex; align-items: center; gap: 22px; margin-top: 34px; }
.contact-row > span { color: rgba(255,255,255,.52); font-size: 12px; }

.social-contact { background: #f2f0eb; }
.social-contact .split-heading { align-items: end; margin-bottom: 38px; }
.social-contact .split-heading p { color: var(--muted); }
.social-qr-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.social-qr-card { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 14px 14px 18px; overflow: hidden; border: 1px solid rgba(16,24,32,.11); border-radius: 16px; color: var(--ink); background: #fff; box-shadow: 0 12px 34px rgba(16,24,32,.07); transition: transform .2s ease, box-shadow .2s ease; }
.social-qr-card:hover { color: var(--ink); transform: translateY(-4px); box-shadow: 0 18px 44px rgba(16,24,32,.12); }
.social-platform { margin: 2px 2px 11px; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.social-qr-image { display: grid; place-items: center; aspect-ratio: 1 / 1.22; overflow: hidden; border-radius: 10px; background: #f7f7f5; }
.social-qr-image img { width: 100%; height: 100%; object-fit: contain; }
.social-qr-card strong { margin: 14px 2px 2px; font-size: 18px; }
.social-qr-card small { margin: 0 2px; color: var(--muted); font-size: 11px; }
.social-qr-card::after { content: "↗"; position: absolute; right: 16px; bottom: 17px; color: var(--orange); font-size: 18px; }
.wechat-card { border-top: 3px solid #07c160; }
.wechat-card.orange { border-top-color: #ed6b16; }
.douyin-card { border-top: 3px solid #1d1d1f; }
.xhs-card { border-top: 3px solid #ff2442; }

.site-footer { padding: 68px 0 24px; color: var(--white); background: #0b1116; }
.footer-grid { display: grid; grid-template-columns: 1fr 160px 220px; gap: 80px; padding-bottom: 55px; }
.footer-grid > div { display: flex; flex-direction: column; gap: 9px; align-items: flex-start; }
.footer-grid > div:first-child p { max-width: 390px; color: rgba(255,255,255,.45); font-size: 13px; }
.footer-grid > div:not(:first-child) strong { margin-bottom: 8px; color: rgba(255,255,255,.45); font-size: 11px; letter-spacing: .12em; }
.footer-grid > div:not(:first-child) a, .footer-grid > div:not(:first-child) span { color: rgba(255,255,255,.74); font-size: 13px; }
.footer-grid a:hover { color: var(--orange); }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.34); font-size: 10px; letter-spacing: .05em; }
.footer-bottom .icp-link { min-height: 36px; display: inline-flex; align-items: center; padding: 0 14px; color: #fff; background: rgba(36,87,230,.28); border: 1px solid rgba(83,144,255,.7); border-radius: 999px; box-shadow: 0 4px 14px rgba(0,0,0,.18); font-size: 14px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.footer-bottom .icp-link:hover { color: #fff; background: var(--orange); border-color: var(--orange); }
.footer-bottom .icp-link:focus-visible { outline: 3px solid rgba(255,129,85,.42); outline-offset: 3px; }

/* SEO landing pages */
.site-header.solid { background: rgba(16,24,32,.98); }
.language-link { min-width: 44px; justify-content: center; color: #ff8a60; font-weight: 800; }
.seo-page { background: #f5f4f0; }
.seo-hero { min-height: 760px; position: relative; display: flex; align-items: center; overflow: hidden; color: var(--white); background: var(--ink); }
.seo-hero-media, .seo-hero-overlay { position: absolute; inset: 0; }
.seo-hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.seo-hero-overlay { background: linear-gradient(90deg, rgba(8,14,19,.97), rgba(8,14,19,.85) 56%, rgba(8,14,19,.35)); }
.seo-hero-content { position: relative; z-index: 2; padding-top: 100px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 38px; color: rgba(255,255,255,.48); font-size: 11px; }
.breadcrumbs a:hover { color: var(--orange); }
.seo-hero h1 { max-width: 900px; margin: 27px 0 25px; font-size: clamp(52px, 6.2vw, 86px); line-height: 1.08; letter-spacing: -.055em; }
.seo-hero h1 em { color: var(--orange); font-style: normal; }
.seo-hero-content > p { max-width: 760px; margin: 0; color: rgba(255,255,255,.72); font-size: 18px; line-height: 1.85; }
.seo-updated { margin-top: 28px; color: rgba(255,255,255,.42); font-size: 10px; letter-spacing: .04em; }
.seo-reading-grid { display: grid; grid-template-columns: 220px minmax(0, 760px); gap: 90px; justify-content: center; align-items: start; }
.seo-toc { position: sticky; top: 110px; padding: 22px 0; border-top: 2px solid var(--ink); display: grid; }
.seo-toc strong { margin-bottom: 15px; font-size: 13px; }
.seo-toc a { min-height: 38px; display: flex; align-items: center; color: #667177; border-bottom: 1px solid var(--line); font-size: 12px; }
.seo-toc a:hover { color: var(--orange); }
.seo-article h2 { margin: 18px 0 28px; font-size: clamp(36px, 4vw, 54px); line-height: 1.2; letter-spacing: -.04em; }
.seo-article > p { margin: 0 0 20px; color: #4f5a61; font-size: 17px; line-height: 1.95; }
.seo-article > p strong { color: var(--ink); }
.compliance-note { margin: 35px 0; padding: 25px 28px; background: #fff4ee; border-left: 4px solid var(--orange); }
.compliance-note strong { font-size: 14px; }
.compliance-note p { margin: 8px 0 0; color: #5d666b; font-size: 13px; }
.term-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 34px; background: var(--line); border: 1px solid var(--line); }
.term-grid > div { padding: 22px; background: var(--white); display: grid; }
.term-grid strong { font: 800 18px/1.3 Arial,sans-serif; }
.term-grid span { margin-top: 5px; color: var(--muted); font-size: 11px; }
.seo-process { color: var(--white); background: var(--ink); }
.seo-process .split-heading > p { color: rgba(255,255,255,.62); }
.seo-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.12); }
.seo-steps li { min-height: 190px; padding: 30px; background: #151f27; display: grid; grid-template-columns: 48px 1fr; gap: 18px; }
.seo-steps li > span { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; color: var(--orange); font: 800 10px/1 Arial,sans-serif; }
.seo-steps h3 { margin: 5px 0 10px; font-size: 19px; }
.seo-steps p { margin: 0; color: rgba(255,255,255,.58); font-size: 13px; }
.seo-capabilities { background: #f7f7f4; }
.seo-feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.seo-feature-grid article { min-height: 255px; padding: 28px; background: var(--white); border-top: 3px solid var(--ink); }
.seo-feature-grid article > span { color: var(--orange); font: 800 10px/1 Arial,sans-serif; }
.seo-feature-grid h3 { margin: 54px 0 12px; font-size: 20px; }
.seo-feature-grid p { margin: 0; color: var(--muted); font-size: 13px; }
.system-boundary { color: var(--white); background: #27343c; }
.boundary-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.boundary-layout h2 { margin: 18px 0 0; font-size: clamp(38px,4.2vw,58px); line-height: 1.17; letter-spacing: -.04em; }
.boundary-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.boundary-columns article { padding: 30px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); }
.boundary-columns strong { display: block; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.14); font-size: 15px; }
.boundary-columns ul { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 12px; }
.boundary-columns li { position: relative; padding-left: 18px; color: rgba(255,255,255,.66); font-size: 13px; }
.boundary-columns li::before { content: ""; position: absolute; left: 0; top: .75em; width: 6px; height: 2px; background: var(--orange); }
.faq-section { background: var(--paper); }
.faq-layout { display: grid; grid-template-columns: .64fr 1.36fr; gap: 90px; align-items: start; }
.faq-layout > div:first-child { position: sticky; top: 110px; }
.faq-layout h2 { margin: 18px 0; font-size: clamp(38px,4vw,56px); line-height: 1.18; letter-spacing: -.04em; }
.faq-layout > div:first-child p { color: var(--muted); font-size: 13px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex: 0 0 auto; color: var(--orange); font: 400 24px/1 Arial,sans-serif; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -2px 0 24px; max-width: 700px; color: var(--muted); font-size: 14px; }
.official-sources { padding: 28px 0; background: #e9e7e1; border-top: 1px solid #d6d4ce; }
.official-sources .container { display: grid; grid-template-columns: 180px 1fr; gap: 30px; align-items: start; }
.official-sources strong { font-size: 12px; letter-spacing: .08em; }
.official-sources p { margin: 0; color: #626c71; font-size: 12px; }
.official-sources a { color: #b23c16; text-decoration: underline; text-underline-offset: 3px; }
.compact-cta { min-height: 620px; }
.ru-page, .en-page { font-family: Inter, Arial, "Noto Sans", sans-serif; }
.ru-page .brand-copy strong, .en-page .brand-copy strong { letter-spacing: .04em; }
.ru-page .seo-hero h1, .en-page .seo-hero h1 { max-width: 1020px; font-size: clamp(50px,5.8vw,80px); }
.ru-page .section-heading h2, .ru-page .boundary-layout h2, .ru-page .faq-layout h2, .en-page .section-heading h2, .en-page .boundary-layout h2, .en-page .faq-layout h2 { letter-spacing: -.03em; }
.article-hero { min-height: 700px; }
.aggregation-stack { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.aggregation-stack article { min-height: 300px; padding: 28px; background: var(--white); display: flex; flex-direction: column; }
.aggregation-stack article > span { color: var(--orange); font: 800 9px/1 Arial,sans-serif; letter-spacing: .13em; }
.aggregation-stack h3 { margin: auto 0 13px; font-size: 20px; }
.aggregation-stack p { margin: 0; color: var(--muted); font-size: 12px; }
.topic-link { margin-top: 38px; padding: 30px; background: #e9e7e1; border-left: 4px solid var(--orange); }
.topic-link strong { font-size: 18px; }
.topic-link p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
.topic-link .text-link { margin-top: 16px; }
.error-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; color: var(--white); background: var(--ink); text-align: center; }
.error-page main { max-width: 680px; }
.error-page main > span { color: var(--orange); font: 900 14px/1 Arial,sans-serif; letter-spacing: .2em; }
.error-page h1 { margin: 18px 0 12px; font-size: clamp(42px,7vw,72px); line-height: 1.1; }
.error-page p { color: rgba(255,255,255,.65); }
.error-page main > div { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.error-page .button-dark { border: 1px solid rgba(255,255,255,.3); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1024px) {
  .site-nav { gap: 18px; }
  .hero { height: auto; min-height: 900px; }
  .hero-layout { grid-template-columns: 1fr .72fr; gap: 32px; }
  .hero h1 { font-size: clamp(50px, 7vw, 72px); }
  .live-card { margin-bottom: 42px; }
  .split-heading, .comparison-layout, .deployment-layout { gap: 55px; }
  .workflow-grid { grid-template-columns: repeat(3, 1fr); gap: 42px 0; }
  .workflow-grid::before { display: none; }
  .capability-layout { gap: 40px; }
  .russia-entry-layout { gap: 45px; }
  .seo-reading-grid { gap: 50px; }
  .boundary-layout, .faq-layout { gap: 50px; }
  .aggregation-stack { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 32px), var(--content)); }
  .header-inner { min-height: 68px; justify-content: flex-start; gap: 6px; }
  .menu-button { order: 3; display: block; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .site-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 14px 16px 22px; background: rgba(16,24,32,.98); flex-direction: column; align-items: stretch; gap: 2px; box-shadow: 0 18px 30px rgba(0,0,0,.25); }
  .site-nav.open { display: flex; }
  .site-nav > a { padding: 0 12px; }
  .header-language { border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); }
  .header-language summary { width: 100%; justify-content: space-between; padding: 0 12px; color: #fff; }
  .header-language-menu { position: static; min-width: 0; padding: 0 0 8px; color: #fff; border: 0; background: transparent; box-shadow: none; }
  .header-language-menu a { color: rgba(255,255,255,.78); padding-inline: 20px; }
  .header-language-menu a:hover, .header-language-menu a[aria-current="page"] { color: #fff; background: rgba(255,255,255,.08); }
  .header-inner > .header-language { order: 2; margin: 0 0 0 auto; padding: 0; border: 0; }
  .header-inner > .header-language summary { width: auto; min-width: 64px; justify-content: center; padding: 0 8px; color: inherit; }
  .header-inner > .header-language .header-language-menu { position: absolute; top: calc(100% + 8px); right: 0; min-width: 150px; padding: 8px; color: var(--ink); border: 1px solid var(--line); background: #fff; box-shadow: 0 18px 46px rgba(16,24,32,.16); }
  .header-inner > .header-language .header-language-menu a { color: #445168; padding-inline: 12px; }
  .header-inner > .header-language .header-language-menu a:hover, .header-inner > .header-language .header-language-menu a[aria-current="page"] { color: #2457e6; background: #eef3ff; }
  .nav-cta { justify-content: center; margin-top: 8px; }
  .hero { min-height: 1060px; align-items: flex-start; }
  .hero-layout { grid-template-columns: 1fr; padding-top: 128px; padding-bottom: 75px; }
  .hero-overlay { background: linear-gradient(90deg, rgba(8,14,19,.95), rgba(8,14,19,.65)), linear-gradient(0deg, rgba(8,14,19,.65), transparent); }
  .live-card { width: min(100%, 470px); justify-self: end; margin: 0; }
  .section { padding: 86px 0; }
  .split-heading, .comparison-layout, .deployment-layout, .capability-layout { grid-template-columns: 1fr; }
  .split-heading { gap: 28px; }
  .system-grid { grid-template-columns: 1fr; }
  .system-card { min-height: 330px; }
  .capability-image { min-height: 470px; order: -1; }
  .comparison-layout { gap: 48px; }
  .deployment-layout { gap: 48px; }
  .russia-entry-layout, .boundary-layout, .faq-layout { grid-template-columns: 1fr; gap: 44px; }
  .russia-entry-panel { max-width: 560px; width: 100%; }
  .seo-hero { min-height: 790px; }
  .seo-reading-grid { grid-template-columns: 1fr; gap: 38px; }
  .seo-toc, .faq-layout > div:first-child { position: static; }
  .seo-toc { grid-template-columns: 1fr 1fr; column-gap: 18px; }
  .seo-toc strong { grid-column: 1 / -1; }
  .seo-feature-grid { grid-template-columns: 1fr 1fr; }
  .boundary-columns { grid-template-columns: 1fr 1fr; }
  .official-sources .container { grid-template-columns: 140px 1fr; }
  .article-hero { min-height: 720px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .social-qr-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .brand-copy small { display: none; }
  .hero { min-height: 980px; }
  .hero-layout { padding-top: 110px; }
  .hero h1 { margin-top: 22px; font-size: clamp(45px, 13.5vw, 64px); }
  .hero-copy > p { font-size: 16px; line-height: 1.75; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-proof { justify-content: space-between; }
  .hero-proof > div { min-width: auto; flex: 1; margin-right: 12px; padding-right: 12px; }
  .hero-proof strong { font-size: 23px; }
  .live-card { padding: 16px; }
  .section-heading h2 { font-size: 38px; }
  .workflow-grid { grid-template-columns: 1fr 1fr; gap: 40px 16px; }
  .flow-step { padding-right: 8px; }
  .capability-image { min-height: 400px; }
  .deployment-visual { min-height: 430px; }
  .server { width: 190px; }
  .pda { bottom: 50px; width: 104px; padding: 12px; }
  .line-a, .line-c { height: 126px; }
  .contact-row { align-items: stretch; flex-direction: column; }
  .cta { min-height: 650px; }
  .cta h2 { font-size: 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid > div:first-child { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 12px; }
  .social-qr-grid { grid-template-columns: 1fr; }
  .social-qr-card { padding: 12px 12px 17px; }
  .social-qr-image { aspect-ratio: 1 / 1.1; }
  .russia-entry-copy h2 { font-size: 38px; }
  .russia-entry-panel { padding: 18px; }
  .seo-hero { min-height: 760px; }
  .seo-hero-content { padding-top: 100px; }
  .seo-hero h1, .ru-page .seo-hero h1, .en-page .seo-hero h1 { font-size: clamp(41px,11.5vw,56px); }
  .seo-hero-content > p { font-size: 16px; }
  .seo-toc { grid-template-columns: 1fr; }
  .seo-toc strong { grid-column: auto; }
  .term-grid, .seo-steps, .seo-feature-grid, .boundary-columns { grid-template-columns: 1fr; }
  .aggregation-stack { grid-template-columns: 1fr; }
  .aggregation-stack article { min-height: 230px; }
  .seo-steps li { min-height: auto; }
  .official-sources .container { grid-template-columns: 1fr; gap: 8px; }
}

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