/* ===== Tokens ===== */
:root {
  --bg: #07070f;
  --bg-2: #0d0c1c;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.16);
  --text: #f4f3ff;
  --muted: #a3a1c2;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --amber: #ffc46b;
  --grad: linear-gradient(100deg, #a78bfa 0%, #22d3ee 55%, #ffd98a 100%);
  --radius: 20px;
  --font-head: "Sora", "Segoe UI", system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; }

.container { width: min(1180px, 100% - 32px); margin-inline: auto; }
.ic { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.ic-sm { width: 14px; height: 14px; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; background-size: 200% auto; animation: shimmer 6s linear infinite; }
.muted { color: var(--muted); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  padding: 14px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  font-family: inherit; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(100deg, var(--violet), #6d5cf6 45%, var(--cyan));
  color: #fff; box-shadow: 0 8px 30px -8px rgba(139, 92, 246, .7);
}
.btn-primary:hover { box-shadow: 0 12px 40px -6px rgba(34, 211, 238, .6); }
.btn-ghost { border-color: var(--border-2); background: var(--surface); color: var(--text); }
.btn-ghost:hover { border-color: rgba(255,255,255,.35); }
.btn-light { background: #fff; color: #12101f; }
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* ===== Header ===== */
.header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.header.scrolled { background: rgba(7, 7, 15, .72); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-color: var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 34px; height: 34px; }
.brand-mark .spark, .core .spark { transform-origin: 43px 20px; animation: twinkle 3.2s ease-in-out infinite; }
.brand-name { font-family: var(--font-head); font-weight: 600; font-size: 22px; letter-spacing: -.02em; }
.nav-links { display: flex; gap: 30px; font-size: 15px; color: var(--muted); }
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.menu-btn { display: none; background: none; border: 1px solid var(--border-2); color: var(--text); border-radius: 12px; padding: 8px; cursor: pointer; }

/* Language switcher */
.lang { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 9px 12px;
  background: var(--surface); border: 1px solid var(--border-2); border-radius: 999px;
  color: var(--text); font: 600 13px var(--font-body); cursor: pointer; transition: border-color .2s;
}
.lang-btn:hover { border-color: rgba(255,255,255,.35); }
.lang-btn .ic { width: 16px; height: 16px; }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 180px; padding: 6px;
  background: rgba(16, 15, 32, .96); border: 1px solid var(--border-2); border-radius: 14px;
  backdrop-filter: blur(16px); box-shadow: 0 20px 50px -10px rgba(0,0,0,.6);
  opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity .18s, transform .18s;
}
.lang.open .lang-menu { opacity: 1; transform: none; pointer-events: auto; }
.lang-menu li {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 9px; cursor: pointer; font-size: 14px; transition: background .15s;
}
.lang-menu li small { color: var(--muted); font-size: 11px; font-weight: 600; }
.lang-menu li:hover { background: var(--surface-2); }
.lang-menu li.active { background: rgba(139, 92, 246, .18); }
.lang-menu li.active small { color: var(--cyan); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
#lights { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.aurora { position: absolute; inset: 0; z-index: 0; pointer-events: none; filter: blur(80px); opacity: .55; }
.aurora span { position: absolute; border-radius: 50%; animation: drift 18s ease-in-out infinite alternate; }
.aurora span:nth-child(1) { width: 520px; height: 520px; background: #5b3df5; top: -140px; left: -120px; }
.aurora span:nth-child(2) { width: 460px; height: 460px; background: #0ea5c6; bottom: -160px; right: -80px; animation-delay: -6s; }
.aurora span:nth-child(3) { width: 300px; height: 300px; background: #ff9a5c; top: 30%; left: 55%; opacity: .35; animation-delay: -12s; }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 160px; background: linear-gradient(transparent, var(--bg)); z-index: 1; }

.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 10px;
  border: 1px solid var(--border-2); border-radius: 999px; background: var(--surface);
  font-size: 13px; color: var(--muted); backdrop-filter: blur(8px);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 2s ease-in-out infinite; }
h1 {
  font-family: var(--font-head); font-weight: 700; letter-spacing: -.035em; line-height: 1.05;
  font-size: clamp(40px, 6.4vw, 76px); margin: 22px 0 22px;
}
.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 36px; color: var(--muted); font-size: 14px; }
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points .ic { color: var(--cyan); width: 18px; height: 18px; }

/* Orbit */
.orbit { --s: min(460px, 82vw); position: relative; width: var(--s); height: var(--s); margin-inline: auto; }
.core {
  position: absolute; left: 50%; top: 50%; width: 30%; height: 30%; transform: translate(-50%, -50%);
  border-radius: 50%; display: grid; place-items: center;
  background: radial-gradient(circle, rgba(139,92,246,.35), rgba(34,211,238,.08) 60%, transparent 72%);
  animation: breathe 5s ease-in-out infinite;
}
.core::before {
  content: ""; position: absolute; inset: 14%; border-radius: 50%;
  background: rgba(13, 12, 28, .9); border: 1px solid var(--border-2);
  box-shadow: 0 0 60px rgba(139,92,246,.55), inset 0 0 30px rgba(34,211,238,.15);
}
.core svg { position: relative; width: 52%; height: 52%; }
.ring {
  --d: calc(var(--s) * var(--k)); position: absolute; width: var(--d); height: var(--d);
  left: calc(50% - var(--d) / 2); top: calc(50% - var(--d) / 2);
  border: 1px solid var(--border); border-radius: 50%;
  animation: spin var(--dur) linear infinite;
}
.r1 { --k: .52; }
.r2 { --k: .76; border-style: dashed; border-color: rgba(255,255,255,.07); }
.r3 { --k: .99; }
.sat {
  position: absolute; left: 50%; top: 50%; width: 46px; height: 46px; margin: -23px;
  transform: rotate(var(--a)) translateY(calc(var(--d) / -2)) rotate(calc(var(--a) * -1));
}
.sat i {
  display: grid; place-items: center; width: 100%; height: 100%; border-radius: 14px;
  background: rgba(18, 16, 38, .9); border: 1px solid var(--border-2); color: var(--text);
  box-shadow: 0 8px 24px -6px rgba(139,92,246,.5);
  animation: spin var(--dur) linear infinite reverse;
}
.r2 .sat i { color: var(--cyan); }
.r3 .sat i { color: var(--amber); }

/* ===== Sections ===== */
.section { padding: 110px 0; position: relative; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px;
}
h2 { font-family: var(--font-head); font-weight: 600; letter-spacing: -.03em; line-height: 1.12; font-size: clamp(30px, 4vw, 48px); }
.section-head p { color: var(--muted); margin-top: 16px; font-size: 17px; }
h3 { font-family: var(--font-head); font-weight: 600; font-size: 20px; letter-spacing: -.01em; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.card {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; overflow: hidden; transition: border-color .3s, transform .3s;
}
.card:hover { border-color: var(--border-2); transform: translateY(-4px); }
.card p { color: var(--muted); margin-top: 10px; }
.card-lg { padding: 38px; }
.card-lg h3 { font-size: 26px; margin-top: 14px; }
/* Cursor-following light on cards */
.glow::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(139,92,246,.16), transparent 45%);
}
.glow:hover::before { opacity: 1; }

.card-icon {
  display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px;
  background: rgba(139, 92, 246, .14); color: #b9a6ff; border: 1px solid rgba(139, 92, 246, .3);
}
.card-icon.cyan { background: rgba(34, 211, 238, .12); color: var(--cyan); border-color: rgba(34, 211, 238, .3); }
.card-icon.amber { background: rgba(255, 196, 107, .12); color: var(--amber); border-color: rgba(255, 196, 107, .3); }
.card-lg .card-icon { position: absolute; top: 34px; right: 34px; }
.tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .1em; padding: 5px 11px; border-radius: 999px; background: rgba(139,92,246,.16); color: #c4b5fd; }
.tag.cyan { background: rgba(34,211,238,.14); color: var(--cyan); }
.checks { margin-top: 24px; display: grid; gap: 12px; }
.checks li { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.checks .ic { width: 18px; height: 18px; color: var(--cyan); }

/* Apps */
.app-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 22px; }
.soon { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--amber); border: 1px solid rgba(255,196,107,.35); padding: 4px 10px; border-radius: 999px; }
.apps-note { text-align: center; margin-top: 40px; color: var(--muted); }
.apps-note a { color: var(--cyan); font-weight: 600; }

/* Custom SaaS */
.custom-box {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 56px; border-radius: 28px; border: 1px solid var(--border-2);
  background:
    radial-gradient(600px circle at 0% 0%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(500px circle at 100% 100%, rgba(34,211,238,.15), transparent 60%),
    var(--bg-2);
}
.custom-copy p { color: var(--muted); margin: 18px 0 30px; font-size: 17px; }
.code-window { border-radius: 16px; background: #0a0918; border: 1px solid var(--border-2); overflow: hidden; box-shadow: 0 30px 60px -20px rgba(0,0,0,.7); }
.cw-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.cw-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.cw-bar i:nth-child(2) { background: #febc2e; }
.cw-bar i:nth-child(3) { background: #28c840; }
.cw-bar span { margin-left: 10px; font-size: 12px; color: var(--muted); }
.code-window pre { padding: 22px; font: 14px/1.75 ui-monospace, "Cascadia Code", Consolas, monospace; color: #d7d5f0; overflow-x: auto; }
.code-window b { font-weight: 500; }
.code-window .k { color: #c084fc; }
.code-window .f { color: #67e8f9; }
.code-window .s { color: #fcd38d; }
.code-window .c { color: #6f6c92; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 60px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 24px; left: 6%; right: 6%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139,92,246,.6), rgba(34,211,238,.6), transparent);
}
.step { position: relative; padding-top: 70px; }
.step-num {
  position: absolute; top: 0; left: 0; width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
  background: var(--bg); border: 1px solid var(--border-2); font: 600 14px var(--font-head); color: var(--cyan);
  box-shadow: 0 0 24px rgba(139,92,246,.35);
}
.step > .ic { color: #b9a6ff; margin-bottom: 12px; width: 24px; height: 24px; }
.step p { color: var(--muted); margin-top: 8px; font-size: 15px; }

/* Features */
.feature { padding: 30px; border-radius: var(--radius); border: 1px solid var(--border); background: linear-gradient(180deg, var(--surface), transparent); transition: border-color .3s; }
.feature:hover { border-color: var(--border-2); }
.feature .ic { width: 26px; height: 26px; color: var(--cyan); margin-bottom: 18px; }
.feature:nth-child(3n+2) .ic { color: #b9a6ff; }
.feature:nth-child(3n) .ic { color: var(--amber); }
.feature p { color: var(--muted); margin-top: 8px; font-size: 15px; }

/* CTA band */
.cta-band {
  text-align: center; padding: 72px 32px; border-radius: 28px; position: relative; overflow: hidden;
  background: linear-gradient(120deg, #5b3df5, #7c5cff 40%, #0ea5c6);
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(500px circle at 80% 0%, rgba(255,217,138,.45), transparent 60%);
}
.cta-band > * { position: relative; }
.cta-band p { margin: 14px auto 30px; max-width: 520px; color: rgba(255,255,255,.85); font-size: 17px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact-info > p { color: var(--muted); margin: 16px 0 32px; font-size: 17px; }
.contact-row { display: flex; align-items: center; gap: 16px; padding: 18px; border-radius: 16px; border: 1px solid var(--border); background: var(--surface); transition: border-color .2s; }
.contact-row:hover { border-color: var(--border-2); }
.contact-row small, .socials > small { display: block; color: var(--muted); font-size: 13px; }
.contact-row b { font-weight: 600; font-size: 17px; }
.socials { margin-top: 28px; }
.social-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.social { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; border: 1px solid var(--border-2); background: var(--surface); transition: border-color .2s, color .2s; }
.social:hover { border-color: var(--cyan); color: var(--cyan); }
.social.is-soon { opacity: .45; pointer-events: none; }
.social-row .soon { margin-left: 4px; }

.form { display: grid; gap: 18px; padding: 34px; }
.form:hover { transform: none; }
.form label { display: grid; gap: 8px; font-size: 14px; color: var(--muted); }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 15px; border-radius: 12px; border: 1px solid var(--border-2);
  background: rgba(7,7,15,.6); color: var(--text); font: 15px var(--font-body); transition: border-color .2s, box-shadow .2s; resize: vertical;
}
.form select option { background: #121027; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 4px rgba(139,92,246,.18); }
.form .btn { justify-self: start; }
.form-note { color: var(--muted); font-size: 12px; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 60px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-grid p { margin-top: 14px; max-width: 320px; font-size: 15px; }
.footer h4 { font-family: var(--font-head); font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.footer-grid a:not(.brand) { display: block; color: var(--muted); font-size: 15px; margin-bottom: 10px; transition: color .2s; }
.footer-grid a:not(.brand):hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; }

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ===== Keyframes ===== */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { to { background-position: 200% center; } }
@keyframes twinkle { 0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; } 50% { transform: scale(.78) rotate(20deg); opacity: .85; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }
@keyframes breathe { 0%, 100% { transform: translate(-50%, -50%) scale(1); } 50% { transform: translate(-50%, -50%) scale(1.08); } }
@keyframes drift { to { transform: translate(60px, 40px) scale(1.15); } }

/* ===== Responsive ===== */
@media (max-width: 1000px) {
  .hero-grid, .custom-box, .contact-grid { grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-copy .lead { margin-inline: auto; }
  .hero-cta, .hero-points { justify-content: center; }
  .orbit { --s: min(400px, 82vw); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .steps::before { display: none; }
  .custom-box { padding: 36px; }
}
@media (max-width: 860px) {
  .menu-btn { display: inline-grid; place-items: center; }
  .nav-links {
    position: absolute; top: 72px; left: 16px; right: 16px; flex-direction: column; gap: 0;
    background: rgba(16, 15, 32, .97); border: 1px solid var(--border-2); border-radius: 16px; padding: 8px;
    opacity: 0; transform: translateY(-8px); pointer-events: none; transition: opacity .2s, transform .2s;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 14px; border-radius: 10px; color: var(--text); }
  .nav-links a:hover { background: var(--surface-2); }
  .hide-sm { display: none; }
}
@media (max-width: 640px) {
  .section { padding: 80px 0; }
  .grid-2, .grid-3, .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .card-lg { padding: 28px; }
  .card-lg .card-icon { top: 26px; right: 26px; }
  .custom-box { padding: 26px; }
  .form { padding: 24px; }
  .form input, .form select, .form textarea { font-size: 16px; }
  .steps { row-gap: 28px; margin-top: 44px; }
  .step { padding: 0 0 0 66px; min-height: 48px; }
  .step > .ic { display: none; }
  .step h3 { padding-top: 10px; }
  .feature { display: grid; grid-template-columns: auto 1fr; column-gap: 16px; padding: 22px; }
  .feature .ic { grid-row: span 2; margin: 2px 0 0; }
  .feature p { margin-top: 4px; }
  .grid-3.features { gap: 14px; }
  .hero-cta .btn { width: 100%; max-width: 320px; }
  .sat { width: 38px; height: 38px; margin: -19px; }
  .sat .ic { width: 17px; height: 17px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}