:root {
  --bg: #06080d;
  --bg-2: #0a0e15;
  --surface: #0e131c;
  --surface-2: #131a26;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #e9edf4;
  --muted: #8d97aa;
  --dim: #5d6679;
  --orange: #ff5a1f;
  --orange-2: #ff8a4c;
  --cyan: #22d3ee;
  --cyan-dim: rgba(34, 211, 238, 0.14);
  --radius: 18px;
  --maxw: 1240px;
  --font-display: "Space Grotesk", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; margin: 0; letter-spacing: -0.02em; text-wrap: balance; }
p { margin: 0; }
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0; line-height: 1.25; }
:lang(zh) body { line-height: 1.8; }

.wrap { width: min(var(--maxw), calc(100% - 48px)); margin: 0 auto; }
.mono { font-family: var(--font-mono); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.accent { color: var(--orange); }
.grad {
  background: linear-gradient(92deg, #fff 0%, #ffd2bf 38%, var(--orange) 70%, var(--orange-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(6, 8, 13, 0.72); backdrop-filter: blur(16px) saturate(140%); border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.nav .logo img { height: 34px; width: auto; }
.nav ul { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; font-size: 14px; color: var(--muted); }
.nav ul a:hover { color: var(--text); }
.nav .right { display: flex; align-items: center; gap: 14px; }
.lang {
  display: inline-flex; border: 1px solid var(--line-2); border-radius: 999px; padding: 3px; font: 500 12px/1 var(--font-mono);
}
.lang a { padding: 7px 11px; border-radius: 999px; color: var(--muted); }
.lang a.on { background: var(--surface-2); color: var(--text); }
.menu-btn { display: none; background: none; border: 1px solid var(--line-2); color: var(--text); border-radius: 10px; width: 40px; height: 40px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 48px; padding: 0 22px; border-radius: 12px; font: 600 15px/1 var(--font-body);
  border: 1px solid transparent; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 10px 30px -10px rgba(255, 90, 31, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.btn-primary:hover { box-shadow: 0 16px 40px -10px rgba(255, 90, 31, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.btn-ghost { border-color: var(--line-2); color: var(--text); background: rgba(255, 255, 255, 0.02); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.06); }
.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; border-radius: 10px; }
.btn .arr { transition: transform 0.2s; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; isolation: isolate; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; -webkit-mask-image: linear-gradient(90deg, rgba(0,0,0,.28) 0%, rgba(0,0,0,.45) 45%, #000 75%); mask-image: linear-gradient(90deg, rgba(0,0,0,.28) 0%, rgba(0,0,0,.45) 45%, #000 75%); }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -3;
  background:
    radial-gradient(900px 500px at 78% 38%, rgba(255, 90, 31, 0.13), transparent 60%),
    radial-gradient(700px 480px at 15% 80%, rgba(34, 211, 238, 0.08), transparent 60%),
    var(--bg);
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 220px; z-index: -1;
  background: linear-gradient(to bottom, transparent, var(--bg));
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(44px, 6.6vw, 92px); font-weight: 700; margin: 22px 0 24px; }
:lang(zh) .hero h1 { font-size: clamp(40px, 5.6vw, 76px); }
.hero .lede { font-size: clamp(17px, 1.5vw, 20px); color: #b7c0d0; max-width: 620px; }
.hero .ctas { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.hero .chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 13px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.025); color: #c3cad7; font-size: 13px;
}
.chip i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

/* hero HUD panel */
.hud {
  position: relative; border: 1px solid var(--line-2); border-radius: 22px; overflow: hidden;
  background: linear-gradient(180deg, rgba(19, 26, 38, 0.8), rgba(10, 14, 21, 0.85));
  backdrop-filter: blur(10px);
  box-shadow: 0 40px 120px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}
.hud-img { position: relative; aspect-ratio: 4 / 3.1; overflow: hidden; }
.hud-img img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.9) contrast(1.05); }
.hud-img::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, transparent 55%, rgba(6, 8, 13, 0.9)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px);
}
.scanline {
  position: absolute; left: 0; right: 0; height: 2px; top: 0; z-index: 2;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 18px var(--cyan); animation: scan 4.5s ease-in-out infinite;
}
@keyframes scan { 0%, 100% { top: 4%; opacity: 0; } 10% { opacity: 1; } 50% { top: 92%; } 90% { opacity: 1; } }
.reticle { position: absolute; z-index: 2; border: 1.5px solid var(--cyan); border-radius: 6px; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.3), 0 0 22px rgba(34, 211, 238, 0.35); }
.reticle span {
  position: absolute; top: -24px; left: -1px; font: 500 10.5px/1 var(--font-mono); letter-spacing: 0.08em;
  background: var(--cyan); color: #04121a; padding: 5px 7px; border-radius: 4px; white-space: nowrap;
}
.hud-bar { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.hud-bar div { padding: 16px 18px; border-right: 1px solid var(--line); }
.hud-bar div:last-child { border-right: 0; }
.hud-bar small { display: block; font: 500 10.5px/1 var(--font-mono); color: var(--dim); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 8px; }
.hud-bar b { font: 600 15px/1.2 var(--font-display); }
.hud-bar b .ok { color: #3ee08f; }
.hud-tag {
  position: absolute; top: 14px; left: 14px; z-index: 3; display: flex; gap: 8px; align-items: center;
  font: 500 11px/1 var(--font-mono); color: #d7fbff; background: rgba(4, 18, 26, 0.7); border: 1px solid rgba(34, 211, 238, 0.4);
  padding: 7px 10px; border-radius: 8px; letter-spacing: 0.06em;
}
.hud-tag i { width: 7px; height: 7px; border-radius: 50%; background: #3ee08f; box-shadow: 0 0 10px #3ee08f; animation: blink 1.6s infinite; }
@keyframes blink { 50% { opacity: 0.25; } }

/* ---------- marquee ---------- */
.marquee { border-block: 1px solid var(--line); background: var(--bg-2); overflow: hidden; padding: 20px 0; }
.marquee-track { display: flex; gap: 56px; width: max-content; animation: marquee 42s linear infinite; }
.marquee span { display: inline-flex; align-items: center; gap: 14px; font: 500 15px/1 var(--font-display); color: #aab3c3; white-space: nowrap; }
.marquee span::after { content: "✦"; color: var(--orange); font-size: 11px; margin-left: 42px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
section { position: relative; }
.sec { padding: 128px 0; }
.sec-head { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; margin-bottom: 64px; }
.sec-head h2 { font-size: clamp(34px, 4.2vw, 58px); font-weight: 600; margin-top: 18px; }
:lang(zh) .sec-head h2 { font-size: clamp(30px, 3.6vw, 48px); }
.sec-head p { color: var(--muted); font-size: 17px; max-width: 540px; justify-self: end; }
.sec-head.center { grid-template-columns: 1fr; text-align: center; justify-items: center; }
.sec-head.center p { justify-self: center; }

/* problem / gap */
.gap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.gap-cell { background: var(--bg); padding: 36px 32px; }
.gap-cell .n { font: 600 13px/1 var(--font-mono); color: var(--orange); letter-spacing: 0.1em; }
.gap-cell h3 { font-size: 22px; margin: 18px 0 12px; font-weight: 600; }
.gap-cell p { color: var(--muted); font-size: 15px; }

/* audiences */
.aud { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.aud-card {
  position: relative; border-radius: 24px; overflow: hidden; min-height: 520px; display: flex; flex-direction: column; justify-content: flex-end;
  border: 1px solid var(--line-2); isolation: isolate;
}
.aud-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform 1.2s cubic-bezier(.2,.7,.2,1); }
.aud-card:hover img { transform: scale(1.05); }
.aud-card::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to top, rgba(6, 8, 13, 0.98) 45%, rgba(6, 8, 13, 0.6) 70%, rgba(6, 8, 13, 0.15)); }
.aud-card .in { padding: 40px; }
.aud-card .tag { font: 500 12px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--orange); }
.aud-card h3 { font-size: 30px; margin: 14px 0 14px; font-weight: 600; }
.aud-card p { color: #b8c0cf; }
.ticks { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 12px; font-size: 15px; color: #d4d9e2; }
.ticks li::before { content: ""; flex: 0 0 18px; height: 18px; margin-top: 3px; border-radius: 6px; background: var(--cyan-dim) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/12px no-repeat; }

/* services */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.svc {
  position: relative; padding: 30px 26px 28px; border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), var(--bg-2)); overflow: hidden; transition: border-color 0.3s, transform 0.3s;
}
.svc::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(420px 200px at var(--mx, 50%) var(--my, 0%), rgba(255, 90, 31, 0.16), transparent 70%);
}
.svc:hover { border-color: var(--line-2); transform: translateY(-3px); }
.svc:hover::after { opacity: 1; }
.svc .ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: rgba(255, 90, 31, 0.1); border: 1px solid rgba(255, 90, 31, 0.28); color: var(--orange); margin-bottom: 22px; }
.svc .ic svg { width: 22px; height: 22px; }
.svc h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.svc p { color: var(--muted); font-size: 14.5px; }
.svc.wide { grid-column: span 2; }

/* robots */
.bots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.bot { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; transition: border-color 0.3s, transform 0.3s; }
.bot:hover { border-color: rgba(255, 90, 31, 0.45); transform: translateY(-4px); }
.bot figure { margin: 0; position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.bot figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s cubic-bezier(.2,.7,.2,1); }
.bot:hover figure img { transform: scale(1.06); }
.bot figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(14, 19, 28, 1), transparent 55%); }
.bot figure .k { position: absolute; left: 16px; top: 16px; z-index: 2; font: 500 11px/1 var(--font-mono); letter-spacing: 0.1em; background: rgba(6, 8, 13, 0.7); border: 1px solid var(--line-2); padding: 7px 9px; border-radius: 7px; color: #cfe; backdrop-filter: blur(6px); }
.bot .body { padding: 6px 24px 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.bot h3 { font-size: 21px; font-weight: 600; }
.bot p { color: var(--muted); font-size: 14.5px; }
.bot ul { list-style: none; padding: 0; margin: 6px 0 0; display: grid; gap: 8px; border-top: 1px dashed var(--line-2); padding-top: 16px; }
.bot li { font-size: 13.5px; color: #c7cedb; display: flex; gap: 10px; }
.bot li::before { content: "→"; color: var(--orange); font-family: var(--font-mono); }

/* elevator deep dive */
.lift { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; }
.lift h2 { font-size: clamp(32px, 3.8vw, 52px); font-weight: 600; margin: 18px 0 20px; }
.lift > div > p { color: var(--muted); font-size: 17px; }
.lift .ticks { margin-top: 28px; }
.diagram { border: 1px solid var(--line-2); border-radius: 22px; background: radial-gradient(600px 300px at 50% 0%, rgba(34, 211, 238, 0.07), transparent), var(--bg-2); padding: 28px; }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram .flow { stroke-dasharray: 6 8; animation: dash 1.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -28; } }

/* playbooks */
.plays { display: grid; gap: 22px; }
.play {
  display: grid; grid-template-columns: 0.9fr 1.1fr; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; background: var(--surface);
}
.play:nth-child(even) { grid-template-columns: 1.1fr 0.9fr; }
.play:nth-child(even) figure { order: 2; }
.play figure { margin: 0; position: relative; min-height: 380px; }
.play figure img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.play figure figcaption {
  position: absolute; left: 18px; bottom: 18px; font: 500 11px/1.4 var(--font-mono); color: #cfd6e2;
  background: rgba(6, 8, 13, 0.72); border: 1px solid var(--line-2); padding: 8px 10px; border-radius: 8px; backdrop-filter: blur(6px); letter-spacing: 0.04em;
}
.play .txt { padding: 40px 42px; display: flex; flex-direction: column; gap: 18px; }
.play .meta { display: flex; flex-wrap: wrap; gap: 8px; }
.play .meta span { font: 500 11.5px/1 var(--font-mono); letter-spacing: 0.06em; padding: 7px 10px; border-radius: 7px; border: 1px solid var(--line-2); color: #b9c2d1; }
.play .meta span.o { border-color: rgba(255, 90, 31, 0.45); color: var(--orange-2); }
.play h3 { font-size: 26px; font-weight: 600; }
.play .scope { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.play h4 { font: 600 11.5px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); margin-bottom: 12px; }
.play .scope p { color: var(--muted); font-size: 14.5px; }
.play .scope ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.play .scope li { font-size: 14px; color: #cbd2de; padding-left: 16px; position: relative; }
.play .scope li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 2px; background: var(--cyan); }
.play .out { display: flex; gap: 10px; flex-wrap: wrap; border-top: 1px dashed var(--line-2); padding-top: 18px; }
.play .out span { font-size: 13px; color: #d9dee7; background: rgba(34, 211, 238, 0.08); border: 1px solid rgba(34, 211, 238, 0.22); border-radius: 999px; padding: 6px 12px; }
.note { margin-top: 26px; color: var(--dim); font-size: 13px; text-align: center; }

/* process */
.steps { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0; position: relative; counter-reset: s; }
.steps::before { content: ""; position: absolute; left: 0; right: 0; top: 27px; height: 1px; background: linear-gradient(90deg, var(--orange), var(--cyan)); opacity: 0.5; }
.step { position: relative; padding: 0 14px 0 0; }
.step .dot { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--bg); border: 1px solid var(--line-2); font: 600 15px/1 var(--font-mono); color: var(--orange); position: relative; z-index: 1; margin-bottom: 22px; transition: all 0.3s; }
.step:hover .dot { background: var(--orange); color: #fff; border-color: var(--orange); box-shadow: 0 0 30px rgba(255, 90, 31, 0.5); }
.step h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 13.5px; }
.step .t { display: inline-block; margin-top: 12px; font: 500 11px/1 var(--font-mono); color: var(--cyan); letter-spacing: 0.06em; }

/* manufacturers */
.oem { border: 1px solid var(--line-2); border-radius: 28px; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; background: linear-gradient(135deg, rgba(255, 90, 31, 0.08), transparent 45%), var(--surface); }
.oem .l { padding: 56px; }
.oem h2 { font-size: clamp(30px, 3.4vw, 46px); font-weight: 600; margin: 18px 0 18px; }
.oem .l > p { color: var(--muted); }
.oem .r { border-left: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; }
.oem .r div { padding: 30px 28px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
.oem .r div:nth-child(2n) { border-right: 0; }
.oem .r div:nth-last-child(-n+2) { border-bottom: 0; }
.oem .r b { display: block; font: 600 16px/1.3 var(--font-display); margin-bottom: 8px; }
.oem .r span { color: var(--muted); font-size: 14px; }

/* compliance */
.comp { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.comp div { border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: var(--bg-2); }
.comp b { display: block; font: 600 13px/1 var(--font-mono); color: var(--cyan); letter-spacing: 0.06em; margin-bottom: 12px; }
.comp h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.comp p { color: var(--muted); font-size: 14px; }

/* plans */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan { border: 1px solid var(--line); border-radius: 22px; padding: 34px 30px; background: var(--surface); display: flex; flex-direction: column; gap: 16px; }
.plan.hot { border-color: rgba(255, 90, 31, 0.55); background: linear-gradient(180deg, rgba(255, 90, 31, 0.09), var(--surface) 40%); box-shadow: 0 30px 80px -40px rgba(255, 90, 31, 0.5); }
.plan .nm { font: 600 13px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--orange); }
.plan h3 { font-size: 26px; font-weight: 600; }
.plan > p { color: var(--muted); font-size: 14.5px; }
.plan .ticks { margin-top: 4px; }

/* coverage */
.cov { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.cov-map { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid var(--line-2); aspect-ratio: 5 / 4; }
.cov-map img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(0.25) brightness(0.62) contrast(1.1); }
.cov-map .pin { position: absolute; left: 44%; top: 52%; }
.cov-map .pin i { position: absolute; width: 14px; height: 14px; border-radius: 50%; background: var(--orange); transform: translate(-50%, -50%); box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.3); }
.cov-map .pin i::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--orange); animation: ping 2.2s ease-out infinite; }
@keyframes ping { from { transform: scale(1); opacity: 0.9; } to { transform: scale(5); opacity: 0; } }
.cov-map .pin span { position: absolute; left: 16px; top: -12px; font: 600 12px/1 var(--font-mono); background: rgba(6, 8, 13, 0.8); border: 1px solid var(--line-2); padding: 7px 9px; border-radius: 7px; white-space: nowrap; }
.rings { display: grid; gap: 14px; }
.ring { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 22px 24px; border-radius: 16px; border: 1px solid var(--line); background: var(--bg-2); align-items: center; }
.ring b { font: 600 13px/1.3 var(--font-mono); color: var(--orange); letter-spacing: 0.04em; }
.ring h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.ring p { color: var(--muted); font-size: 14px; }

/* faq */
.faq { max-width: 880px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: 16px; background: var(--bg-2); padding: 0 26px; transition: border-color 0.2s; }
.faq details[open] { border-color: var(--line-2); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 0; font: 600 17px/1.4 var(--font-display); display: flex; justify-content: space-between; gap: 20px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--orange); font: 400 24px/1 var(--font-mono); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 24px; }

/* contact */
.contact { border-radius: 32px; overflow: hidden; position: relative; isolation: isolate; border: 1px solid var(--line-2); }
.contact > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.contact::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(100deg, rgba(6, 8, 13, 0.97) 35%, rgba(6, 8, 13, 0.75) 65%, rgba(6, 8, 13, 0.55)); }
.contact .in { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; padding: 72px 64px; }
.contact h2 { font-size: clamp(34px, 4vw, 56px); font-weight: 600; margin: 18px 0 18px; }
.contact .in > div > p { color: #b8c0cf; font-size: 17px; }
.mails { display: grid; gap: 12px; margin-top: 30px; }
.mails a { display: flex; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 14px; border: 1px solid var(--line-2); background: rgba(6, 8, 13, 0.5); transition: border-color 0.2s; }
.mails a:hover { border-color: var(--orange); }
.mails small { display: block; color: var(--dim); font: 500 11px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 6px; }
.mails b { font: 600 17px/1 var(--font-display); }
form.brief { display: grid; gap: 12px; background: rgba(10, 14, 21, 0.82); border: 1px solid var(--line-2); border-radius: 22px; padding: 28px; backdrop-filter: blur(10px); }
form.brief .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
form.brief label { display: grid; gap: 7px; font: 500 11.5px/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }
form.brief input, form.brief select, form.brief textarea {
  width: 100%; font: 400 15px/1.4 var(--font-body); color: var(--text); background: var(--bg); border: 1px solid var(--line-2);
  border-radius: 11px; padding: 13px 14px; outline: none; transition: border-color 0.2s;
}
form.brief input:focus, form.brief select:focus, form.brief textarea:focus { border-color: var(--orange); }
form.brief textarea { min-height: 96px; resize: vertical; }
form.brief .btn { margin-top: 6px; }
form.brief .fine { color: var(--dim); font-size: 12.5px; text-transform: none; letter-spacing: 0; font-family: var(--font-body); }

/* footer */
footer { border-top: 1px solid var(--line); padding: 56px 0 40px; margin-top: 128px; color: var(--muted); font-size: 14px; }
footer .top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
footer .top img { height: 30px; margin-bottom: 16px; }
footer .cols { display: flex; gap: 64px; flex-wrap: wrap; }
footer h4 { font: 600 12px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); margin-bottom: 16px; }
footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
footer a:hover { color: var(--text); }
footer .bottom { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; border-top: 1px solid var(--line); margin-top: 44px; padding-top: 26px; font-size: 13px; color: var(--dim); }

/* reveal */
.js .rv { opacity: 0; transform: translateY(26px); transition: opacity 0.9s cubic-bezier(.2,.7,.2,1), transform 0.9s cubic-bezier(.2,.7,.2,1); }
.js .rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: 0.08s; } .rv.d2 { transition-delay: 0.16s; } .rv.d3 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .js .rv { opacity: 1; transform: none; transition: none; }
  .marquee-track, .scanline, .diagram .flow { animation: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .bots { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); row-gap: 40px; }
  .steps::before { display: none; }
  .comp { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav ul { display: none; }
  .nav.open ul { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(6, 8, 13, 0.96); padding: 20px 24px 28px; gap: 18px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .menu-btn { display: grid; place-items: center; }
  .nav .right .btn { display: none; }
  .hero-grid, .lift, .cov, .contact .in, .oem, .aud, .sec-head { grid-template-columns: 1fr; }
  .sec-head p { justify-self: start; }
  .hero { padding-top: 110px; }
  .gap-grid { grid-template-columns: 1fr; }
  .play, .play:nth-child(even) { grid-template-columns: 1fr; }
  .play:nth-child(even) figure { order: 0; }
  .play figure { min-height: 260px; }
  .play .scope { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr; }
  .oem .r { border-left: 0; border-top: 1px solid var(--line); }
  .sec { padding: 96px 0; }
}
@media (max-width: 620px) {
  .wrap { width: calc(100% - 36px); }
  .svc-grid, .bots, .comp { grid-template-columns: 1fr; }
  .svc.wide { grid-column: auto; }
  .steps { grid-template-columns: 1fr 1fr; }
  .oem .l, .contact .in { padding: 40px 26px; }
  .oem .r { grid-template-columns: 1fr; }
  .oem .r div { border-right: 0 !important; border-bottom: 1px solid var(--line) !important; }
  form.brief .row { grid-template-columns: 1fr; }
  .ring { grid-template-columns: 1fr; gap: 8px; }
  .aud-card { min-height: 460px; }
  .aud-card .in, .play .txt { padding: 28px 24px; }
  .hud-bar b { font-size: 13px; }
}