:root {
  --ink: #101a3a;
  --ink-2: #263253;
  --muted: #67718a;
  --line: #dce4f2;
  --surface: #f5f8ff;
  --surface-2: #edf3ff;
  --white: #fff;
  --sky: #12b5ff;
  --blue: #3568ff;
  --violet: #7c3aed;
  --violet-2: #5b4bdb;
  --green: #28c98b;
  --orange: #ff9f43;
  --gradient: linear-gradient(135deg, var(--sky), var(--blue) 48%, var(--violet));
  --shadow-sm: 0 10px 30px rgba(28, 61, 130, .08);
  --shadow-lg: 0 28px 80px rgba(25, 55, 130, .16);
  --radius: 20px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font: 16px/1.7 Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { line-height: 1.18; letter-spacing: -.035em; }
h1 { font-size: clamp(2.7rem, 5.4vw, 5.3rem); }
h2 { font-size: clamp(2rem, 3.6vw, 3.35rem); }
h3 { font-size: 1.25rem; }
p { color: var(--muted); }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 112px 0; position: relative; overflow: hidden; }
.section-sm { padding: 76px 0; }
.section-alt { background: var(--surface); }
.section-dark { color: var(--white); background: #0d1735; }
.section-dark p { color: #aebbd9; }
.section-heading { max-width: 730px; margin-bottom: 48px; }
.section-heading.center { text-align: center; margin-inline: auto; }
.section-heading p { font-size: 1.08rem; margin-bottom: 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { width: 24px; height: 2px; content: ""; background: var(--gradient); border-radius: 2px; }
.section-dark .eyebrow { color: #77d5ff; }
.gradient-text { color: transparent; background: var(--gradient); -webkit-background-clip: text; background-clip: text; }
.lead { font-size: 1.18rem; max-width: 680px; }
.tag { display: inline-flex; align-items: center; padding: 7px 12px; border: 1px solid #d6e2ff; border-radius: 999px; background: #f4f7ff; color: #3551a2; font-size: .78rem; font-weight: 700; }
.tag.demo { border-color: #f3dca2; background: #fff8e7; color: #8a5a00; }
.tag.success { border-color: #c9f0df; background: #effcf7; color: #14845b; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 52px; padding: 0 24px; border: 0; border-radius: 12px; color: var(--white); background: var(--gradient); box-shadow: 0 12px 28px rgba(74, 78, 230, .25); font-weight: 750; cursor: pointer; transition: transform .25s, box-shadow .25s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 18px 34px rgba(74, 78, 230, .32); }
.button-secondary { color: var(--ink); background: var(--white); border: 1px solid var(--line); box-shadow: none; }
.button-secondary:hover { border-color: #a8baf0; box-shadow: var(--shadow-sm); }
.button-ghost { color: var(--blue); background: transparent; box-shadow: none; padding-inline: 4px; min-height: auto; }
.button-sm { min-height: 42px; padding: 0 18px; border-radius: 10px; font-size: .9rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.text-link { display: inline-flex; gap: 8px; align-items: center; color: var(--blue); font-weight: 750; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; border-bottom: 1px solid transparent; background: rgba(255, 255, 255, .88); backdrop-filter: blur(16px); transition: box-shadow .25s, border-color .25s; }
.site-header.scrolled { border-color: rgba(213, 223, 240, .8); box-shadow: 0 8px 28px rgba(20, 40, 90, .07); }
.header-inner { height: 76px; display: flex; align-items: center; gap: 28px; }
.brand { width: 152px; flex: 0 0 auto; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 4px; margin-left: auto; }
.nav-link { display: flex; align-items: center; height: 44px; padding: 0 13px; color: #3f4965; border-radius: 9px; font-size: .92rem; font-weight: 650; transition: color .2s, background .2s; }
.nav-link:hover, .nav-link.active { color: var(--blue); background: #f0f4ff; }
.nav-group { position: relative; }
.nav-parent-row { display: flex; align-items: center; }
.nav-parent { padding-right: 5px; }
.dropdown-toggle { width: 28px; height: 40px; padding: 0; border: 0; background: transparent; cursor: pointer; }
.dropdown-toggle svg { width: 15px; margin: auto; fill: none; stroke: currentColor; stroke-width: 1.8; transition: transform .2s; }
.nav-group:hover .dropdown-toggle svg, .nav-group.is-open .dropdown-toggle svg { transform: rotate(180deg); }
.mega-menu { position: absolute; top: calc(100% + 12px); left: -24px; min-width: 318px; padding: 12px; border: 1px solid #e0e7f4; border-radius: 16px; background: rgba(255, 255, 255, .98); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: .2s; }
.nav-group:hover .mega-menu, .nav-group.is-open .mega-menu { opacity: 1; visibility: visible; transform: none; }
.mega-menu a { display: grid; gap: 2px; padding: 12px; border-radius: 11px; }
.mega-menu a:hover { background: #f3f6ff; }
.mega-menu span { color: var(--ink); font-weight: 750; }
.mega-menu small { color: var(--muted); font-size: .79rem; }
.header-cta { margin-left: 4px; }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 0; border-radius: 10px; background: #f2f5fb; cursor: pointer; }
.nav-toggle span { height: 2px; display: block; margin: 5px 0; background: var(--ink); border-radius: 2px; }

.hero { min-height: 820px; padding: 168px 0 92px; display: grid; align-items: start; overflow: hidden; position: relative; background: radial-gradient(circle at 75% 20%, rgba(18,181,255,.13), transparent 26%), radial-gradient(circle at 85% 72%, rgba(124,58,237,.12), transparent 27%), linear-gradient(180deg, #f8fbff, #fff); }
.hero::before { position: absolute; width: 520px; height: 520px; right: -180px; top: 80px; content: ""; border: 1px solid rgba(67, 105, 255, .1); border-radius: 50%; box-shadow: 0 0 0 70px rgba(70,107,255,.025), 0 0 0 140px rgba(70,107,255,.018); }
.hero-grid { display: grid; grid-template-columns: 1.03fr .97fr; gap: 70px; align-items: start; position: relative; }
.hero-copy h1 { margin-bottom: 26px; }
.hero-copy .lead { margin-bottom: 0; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-pills span { padding: 8px 12px; border: 1px solid #d8e4fb; border-radius: 999px; color: #46577d; background: rgba(255,255,255,.7); font-size: .82rem; }
.dashboard-shell { position: relative; padding: 16px; border: 1px solid rgba(196, 211, 238, .8); border-radius: 26px; background: rgba(255, 255, 255, .72); box-shadow: var(--shadow-lg); backdrop-filter: blur(14px); transform: perspective(1200px) rotateY(-3deg) rotateX(2deg); }
.dashboard { overflow: hidden; min-height: 510px; border: 1px solid #e3e9f4; border-radius: 18px; background: #fff; }
.dashboard-top { height: 56px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; border-bottom: 1px solid #e9edf5; }
.window-dots { display: flex; gap: 6px; }
.window-dots i { width: 8px; height: 8px; border-radius: 50%; background: #d7deeb; }
.dashboard-body { padding: 18px; }
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric { padding: 14px; border: 1px solid #e6ebf4; border-radius: 12px; background: #fbfcff; }
.metric small { color: var(--muted); font-size: .72rem; }
.metric strong { display: block; margin-top: 6px; font-size: 1.35rem; letter-spacing: -.04em; }
.metric .up { color: var(--green); font-size: .72rem; font-weight: 700; }
.chart { height: 180px; margin-top: 14px; padding: 16px; border: 1px solid #e6ebf4; border-radius: 14px; background: linear-gradient(180deg, #fbfdff, #f3f7ff); position: relative; overflow: hidden; }
.chart::before { position: absolute; inset: 20px 16px; content: ""; background: repeating-linear-gradient(to bottom, transparent 0 31px, #e7ecf5 32px); }
.chart svg { width: 100%; height: 100%; position: relative; }
.source-list { display: grid; gap: 8px; margin-top: 14px; }
.source-row { display: grid; grid-template-columns: 1.4fr .8fr .65fr; align-items: center; gap: 10px; padding: 9px 11px; border-radius: 10px; background: #f7f9fd; font-size: .76rem; }
.source-row i { height: 5px; display: block; background: #dce5f5; border-radius: 9px; overflow: hidden; }
.source-row i::after { width: var(--value); height: 100%; display: block; content: ""; background: var(--gradient); border-radius: inherit; }
.floating-card { position: absolute; padding: 12px 15px; border: 1px solid #dfe7f4; border-radius: 14px; background: rgba(255,255,255,.93); box-shadow: var(--shadow-sm); font-size: .78rem; font-weight: 750; }
.floating-card.one { left: -38px; bottom: 78px; }
.floating-card.two { right: -26px; top: 92px; }

.page-hero { padding: 168px 0 90px; position: relative; overflow: hidden; background: radial-gradient(circle at 80% 25%, rgba(53,104,255,.13), transparent 28%), linear-gradient(180deg, #f7faff, #fff); }
.page-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: start; }
.hero h1 { font-size: clamp(2rem, 3.2vw, 3rem); text-wrap: balance; }
.page-hero h1 { max-width: 820px; margin-bottom: 22px; font-size: clamp(2rem, 3.2vw, 3rem); text-wrap: balance; }
.page-hero p { max-width: 680px; font-size: 1.12rem; }
.hero-visual { min-height: 340px; display: grid; place-items: center; position: relative; }
.orb { width: 300px; height: 300px; display: grid; place-items: center; border-radius: 50%; background: var(--gradient); box-shadow: 0 32px 80px rgba(67,81,224,.25); position: relative; }
.orb::before, .orb::after { position: absolute; content: ""; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; }
.orb::before { inset: 34px; }
.orb::after { inset: 68px; }
.orb img { width: 96px; filter: brightness(0) invert(1); }
.orbit-chip { position: absolute; padding: 9px 12px; border: 1px solid #dfe7f5; border-radius: 10px; background: white; box-shadow: var(--shadow-sm); color: var(--ink-2); font-size: .78rem; font-weight: 750; }
.orbit-chip:nth-of-type(1) { left: 0; top: 65px; }
.orbit-chip:nth-of-type(2) { right: 0; top: 98px; }
.orbit-chip:nth-of-type(3) { left: 45px; bottom: 20px; }
.orbit-chip:nth-of-type(4) { right: 22px; bottom: 40px; }

.grid-2, .grid-3, .grid-4 { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s; }
.card:hover { transform: translateY(-5px); border-color: #bccbf1; box-shadow: 0 20px 48px rgba(30, 65, 145, .12); }
.card p:last-child { margin-bottom: 0; }
.icon { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 22px; border-radius: 14px; color: var(--blue); background: #edf3ff; font-size: 1.25rem; font-weight: 800; }
.icon.violet { color: var(--violet); background: #f1edff; }
.icon.green { color: #138f62; background: #eafbf4; }
.icon.orange { color: #b76c13; background: #fff5e8; }
.feature-card h3 { margin-bottom: 11px; }
.feature-card .kicker { color: var(--blue); font-size: .75rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 20px; }
.bento > * { grid-column: span 4; }
.bento .wide { grid-column: span 8; }
.bento .half { grid-column: span 6; }
.bento .full { grid-column: 1 / -1; }
.mini-list { display: grid; gap: 12px; padding: 0; margin: 22px 0 0; list-style: none; }
.mini-list li { display: flex; gap: 10px; color: var(--muted); }
.mini-list li::before { width: 20px; height: 20px; flex: 0 0 auto; display: grid; place-items: center; content: "✓"; border-radius: 50%; color: white; background: var(--gradient); font-size: .7rem; font-weight: 900; }

.logo-strip { overflow: hidden; padding: 18px 0; border-block: 1px solid var(--line); }
.logo-track { display: flex; gap: 12px; min-width: max-content; animation: marquee 35s linear infinite; }
.logo-chip { min-width: 150px; padding: 10px 16px; border: 1px solid #e2e8f3; border-radius: 12px; color: #65708a; background: #fff; text-align: center; font-size: .82rem; font-weight: 750; }
@keyframes marquee { to { transform: translateX(-50%); } }

.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; align-items: stretch; }
.flow-step { padding: 22px 18px; border: 1px solid var(--line); border-radius: 16px; background: #fff; position: relative; }
.flow-step:not(:last-child)::after { position: absolute; right: -13px; top: 50%; z-index: 2; content: "→"; color: var(--blue); font-weight: 900; }
.flow-step small { color: var(--blue); font-weight: 800; }
.flow-step strong { display: block; margin-top: 8px; }
.flow-step p { margin: 7px 0 0; font-size: .88rem; }

.steps { display: grid; gap: 0; counter-reset: step; }
.step { display: grid; grid-template-columns: 78px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); counter-increment: step; }
.step::before { width: 58px; height: 58px; display: grid; place-items: center; content: counter(step, decimal-leading-zero); border-radius: 16px; color: white; background: var(--gradient); font-weight: 850; box-shadow: 0 12px 28px rgba(61,88,220,.2); }
.step h3 { margin: 4px 0 8px; }
.step p { margin: 0; }

.format-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.format-card { min-height: 210px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg, white, #f5f8ff); }
.format-device { width: 68px; height: 102px; padding: 7px; border: 3px solid #202d51; border-radius: 13px; background: #fff; }
.format-device i { width: 100%; display: block; border-radius: 4px; background: var(--gradient); }
.format-device.splash i { height: 100%; }
.format-device.interstitial i { height: 62%; margin-top: 18px; }
.format-device.native i { height: 32%; margin-top: 8px; box-shadow: 0 28px 0 #dfe7f4, 0 43px 0 #e8edf6; }
.format-device.banner i { height: 18%; margin-top: 64px; }
.format-device.reward i { height: 100%; clip-path: polygon(0 0,100% 0,100% 100%,0 100%,0 72%,48% 47%,0 22%); }
.format-card strong { margin-top: 20px; }

.architecture { padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow-sm); }
.architecture-row { display: grid; grid-template-columns: 180px 1fr; gap: 24px; align-items: center; padding: 19px 0; border-bottom: 1px dashed #dbe3f0; }
.architecture-row:last-child { border: 0; }
.architecture-row > strong { color: var(--blue); }
.architecture-nodes { display: flex; flex-wrap: wrap; gap: 8px; }
.architecture-nodes span { padding: 9px 12px; border-radius: 10px; background: var(--surface); color: var(--ink-2); font-size: .84rem; font-weight: 650; }

.data-panel { padding: 22px; border: 1px solid #dfe7f4; border-radius: 22px; background: #fff; box-shadow: var(--shadow-lg); }
.data-toolbar { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.data-toolbar span { padding: 8px 12px; border-radius: 8px; background: #f3f6fb; color: #68738b; font-size: .78rem; }
.api-table { width: 100%; border-collapse: collapse; font-size: .83rem; }
.api-table th, .api-table td { padding: 12px 10px; border-bottom: 1px solid #edf0f6; text-align: left; }
.api-table th { color: var(--muted); font-size: .72rem; text-transform: uppercase; }
.status-dot { width: 8px; height: 8px; display: inline-block; margin-right: 6px; border-radius: 50%; background: var(--green); }

.case-card { overflow: hidden; padding: 0; }
.case-cover { min-height: 210px; padding: 26px; display: flex; flex-direction: column; justify-content: space-between; color: white; background: linear-gradient(135deg, #1b2b62, #355df0 56%, #7541e7); }
.case-cover.alt { background: linear-gradient(135deg, #143b47, #1b8f8e 55%, #42c899); }
.case-cover.warm { background: linear-gradient(135deg, #3b265d, #7e49bd 55%, #e182bb); }
.case-cover .tag { align-self: flex-start; color: white; border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.12); }
.case-cover strong { max-width: 300px; font-size: 1.45rem; line-height: 1.3; }
.case-body { padding: 24px; }
.case-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: .8rem; }

.article-card { display: flex; flex-direction: column; min-height: 100%; }
.article-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 18px; color: var(--muted); font-size: .78rem; }
.article-card h3 { font-size: 1.18rem; }
.article-card .text-link { margin-top: auto; padding-top: 14px; }

.platform-intro { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.platform-stack { display: grid; gap: 14px; }
.platform-line { display: grid; grid-template-columns: 56px 1fr; gap: 16px; align-items: start; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: white; box-shadow: var(--shadow-sm); }
.platform-line .icon { margin: 0; }
.platform-line h3 { margin: 3px 0 7px; }
.platform-line p { margin: 0; font-size: .92rem; }
.world-map { position: relative; overflow: hidden; padding: 32px; border: 1px solid rgba(123,155,225,.28); border-radius: 28px; background: radial-gradient(circle at 50% 50%, rgba(18,181,255,.13), transparent 42%), linear-gradient(145deg,#101b3c,#10172f 62%,#251b4b); box-shadow: var(--shadow-lg); }
.world-map::before { position: absolute; inset: 0; content: ""; background-image: linear-gradient(rgba(111,148,226,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(111,148,226,.07) 1px,transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(to bottom,transparent,#000 18%,#000 82%,transparent); }
.world-map svg { width: 100%; min-height: 420px; position: relative; }
.map-land { fill: rgba(129,168,255,.19); stroke: rgba(128,193,255,.48); stroke-width: 1.2; }
.map-route { fill: none; stroke: url(#routeGradient); stroke-width: 2; stroke-dasharray: 8 8; opacity: .75; }
.map-node { fill: #fff; stroke: #12b5ff; stroke-width: 5; }
.map-pulse { fill: rgba(18,181,255,.16); transform-box: fill-box; transform-origin: center; animation: mapPulse 2.6s ease-out infinite; }
.map-label { fill: #d9e7ff; font: 700 13px Inter,"Microsoft YaHei",sans-serif; }
.map-caption { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 20px; position: relative; }
.map-caption span { padding: 7px 11px; border: 1px solid rgba(139,181,255,.24); border-radius: 999px; color: #b8caec; background: rgba(255,255,255,.045); font-size: .76rem; }
@keyframes mapPulse { 0% { transform: scale(.5); opacity: .8; } 80%,100% { transform: scale(2.4); opacity: 0; } }
.principles { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--line); }
.principle { min-height: 190px; padding: 28px; background: white; }
.principle b { display: block; margin-bottom: 11px; color: var(--blue); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.principle p { margin: 0; }

.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 42px; align-items: start; }
.contact-grid > *, .contact-grid .field, .contact-grid .contact-item > div { min-width: 0; }
.contact-grid .form-card { width: 100%; }
.contact-grid h2 { text-wrap: balance; }
.contact-grid .contact-item a { overflow-wrap: anywhere; }
.contact-grid .field :is(input, select, textarea) { min-width: 0; }
.contact-list { display: grid; gap: 14px; margin-top: 28px; }
.contact-item { display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: center; }
.contact-item i { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: #eef3ff; color: var(--blue); font-style: normal; }
.contact-item small { display: block; color: var(--muted); }
.form-card { padding: 34px; border-radius: 22px; color: white; background: #101a3a; box-shadow: var(--shadow-lg); }
.form-card p { color: #aebbd6; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { color: #d7def1; font-size: .82rem; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid #3b4768; border-radius: 10px; outline: none; color: white; background: #182444; }
.field textarea { min-height: 122px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: #66c8ff; box-shadow: 0 0 0 3px rgba(18,181,255,.14); }
.field select option { color: var(--ink); background: white; }
.checkbox { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0; color: #aebbd6; font-size: .8rem; }
.checkbox input { margin-top: 4px; }
.form-status { min-height: 26px; margin: 12px 0 0; color: #79e0bb !important; font-weight: 700; }

.cta-band { padding: 54px; display: flex; align-items: center; justify-content: space-between; gap: 40px; border-radius: 28px; color: white; background: radial-gradient(circle at 80% 30%, rgba(18,181,255,.35), transparent 27%), linear-gradient(135deg, #111d44, #294dcf 60%, #6738ca); box-shadow: var(--shadow-lg); }
.cta-band h2 { max-width: 680px; margin-bottom: 12px; }
.cta-band p { margin: 0; color: #bfcae7; }
.cta-band .button { flex: 0 0 auto; color: var(--blue); background: white; box-shadow: none; }

.site-footer { padding-top: 72px; color: #d9e0f0; background: #0a1229; }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 54px; padding-bottom: 54px; }
.footer-brand img { width: 150px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 330px; margin: 22px 0 16px; color: #8f9bb7; }
.demo-note { color: #6f7b98; font-size: .74rem; }
.footer-links { display: grid; align-content: start; gap: 10px; }
.footer-links h2 { margin-bottom: 7px; color: white; font-size: .88rem; letter-spacing: 0; }
.footer-links a { color: #8f9bb7; font-size: .84rem; }
.footer-links a:hover { color: #82d8ff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; border-top: 1px solid #202b47; color: #71809e; font-size: .76rem; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .65s, transform .65s; }
[data-reveal].revealed { opacity: 1; transform: none; }

@media (max-width: 1040px) {
  .header-cta { display: none; }
  .main-nav { gap: 0; }
  .nav-link { padding-inline: 9px; }
  .hero-grid, .page-hero-grid { gap: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .format-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1.7fr 1fr 1fr; }
  .footer-main > :last-child { grid-column: 2 / -1; }
}

@media (max-width: 820px) {
  .section { padding: 82px 0; }
  .header-inner { height: 68px; }
  .brand { width: 136px; }
  .nav-toggle { display: block; margin-left: auto; }
  .main-nav { position: fixed; inset: 68px 0 auto; max-height: calc(100vh - 68px); display: none; align-items: stretch; padding: 16px 20px 28px; border-top: 1px solid var(--line); background: rgba(255,255,255,.98); overflow-y: auto; }
  .nav-open .main-nav { display: flex; flex-direction: column; }
  .nav-link { justify-content: flex-start; height: 48px; padding-inline: 12px; }
  .nav-parent-row { justify-content: space-between; }
  .nav-parent { flex: 1; }
  .dropdown-toggle { width: 48px; }
  .mega-menu { position: static; display: none; min-width: 0; margin: 4px 0 10px 12px; opacity: 1; visibility: visible; transform: none; box-shadow: none; }
  .nav-group.is-open .mega-menu { display: block; }
  .hero { min-height: auto; padding: 138px 0 76px; }
  .hero-grid, .page-hero-grid, .contact-grid, .platform-intro { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-copy .lead { margin-inline: auto; }
  .hero-pills, .button-row { justify-content: center; }
  .dashboard-shell { max-width: 620px; margin: 20px auto 0; transform: none; }
  .floating-card.one { left: -10px; }
  .floating-card.two { right: -8px; }
  .page-hero { padding: 138px 0 68px; }
  .page-hero-grid { text-align: center; }
  .page-hero p { margin-inline: auto; }
  .page-hero .button-row { justify-content: center; }
  .hero-visual { min-height: 260px; }
  .orb { width: 220px; height: 220px; }
  .orb img { width: 74px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .bento > *, .bento .wide, .bento .half { grid-column: span 6; }
  .flow { grid-template-columns: 1fr; }
  .flow-step:not(:last-child)::after { right: 50%; top: auto; bottom: -16px; transform: rotate(90deg); }
  .format-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-band { padding: 42px; flex-direction: column; align-items: flex-start; }
  .footer-main { grid-template-columns: repeat(2, 1fr); }
  .footer-main > :last-child { grid-column: auto; }
  .principles { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  h1 { font-size: clamp(2.4rem, 12vw, 3.45rem); }
  .hero h1, .page-hero h1 { font-size: clamp(1.375rem, 6.25vw, 2rem); line-height: 1.16; }
  h2 { font-size: 2rem; }
  .section { padding: 68px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .bento > *, .bento .wide, .bento .half, .bento .full { grid-column: 1 / -1; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid > :last-child { grid-column: 1 / -1; }
  .dashboard { min-height: 470px; }
  .source-row { grid-template-columns: 1fr .7fr; }
  .source-row i { display: none; }
  .floating-card { display: none; }
  .orbit-chip { font-size: .7rem; }
  .format-grid { grid-template-columns: 1fr 1fr; }
  .architecture { padding: 20px; }
  .architecture-row { grid-template-columns: 1fr; gap: 10px; }
  .step { grid-template-columns: 58px 1fr; gap: 16px; }
  .step::before { width: 50px; height: 50px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .form-card { padding: 24px; }
  .cta-band { padding: 32px 24px; border-radius: 22px; }
  .footer-main { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; }
  .principles { grid-template-columns: 1fr; }
  .world-map { padding: 12px; border-radius: 20px; }
  .world-map svg { min-height: 270px; }
}

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


/* Bilingual navigation and Chinese typography. The English v2.5 layout remains unchanged. */
.language-switch { display: flex; align-items: center; gap: 6px; padding: 5px 9px; border: 1px solid var(--line); border-radius: 9px; color: var(--muted); font-size: .76rem; font-weight: 800; white-space: nowrap; }
.language-switch a { transition: color .2s ease; }
.language-switch a.active { color: var(--blue); }
html[lang="zh-CN"] body { font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3, html[lang="zh-CN"] h4 { letter-spacing: -.015em; }
html[lang="zh-CN"] .hero h1, html[lang="zh-CN"] .page-hero h1 { line-height: 1.25; }
html[lang="zh-CN"] p, html[lang="zh-CN"] li, html[lang="zh-CN"] small { line-height: 1.72; }
html[lang="zh-CN"] .eyebrow { letter-spacing: .12em; }
@media (max-width: 820px) {
  .language-switch { margin-left: auto; order: 2; }
  .nav-toggle { margin-left: 10px; order: 3; }
  .main-nav { order: 4; }
}