:root {
  --bg: #0b0c10;
  --card: rgba(255, 255, 255, 0.06);
  --glass: rgba(255, 255, 255, 0.08);
  --text: #eef2f6;
  --muted: #b8c2cf;
  --brand-1: #a8c5ff;
  --brand-2: #96f3d8;
  --accent: #9ed2ff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  --radius: 18px;
  --radius-lg: 22px;
  --ring: rgba(255,255,255,0.22);
  --bg-gradient-a: rgba(155, 89, 255, 0.22); /* purple */
  --bg-gradient-b: rgba(10, 132, 255, 0.20); /* blue */
  --bg-gradient-c: rgba(255, 159, 10, 0.18); /* orange */
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --card: rgba(255, 255, 255, 0.7);
    --glass: rgba(255, 255, 255, 0.55);
    --text: #14161a;
    --muted: #4a5563;
    --shadow: 0 18px 38px rgba(24, 28, 36, 0.18);
  }
}

/* Manual light theme via data-theme attribute */
[data-theme="light"] {
  --bg: #f7f9fc;
  --card: rgba(255, 255, 255, 0.82);
  --glass: rgba(255, 255, 255, 0.66);
  --text: #0e1116;
  --muted: #4b5563;
  --bg-gradient-a: rgba(155, 89, 255, 0.16); /* purple */
  --bg-gradient-b: rgba(10, 132, 255, 0.14); /* blue */
  --bg-gradient-c: rgba(255, 159, 10, 0.12); /* orange */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html { scrollbar-gutter: stable; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", system-ui, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  letter-spacing: 0.2px;
  padding-top: 76px;
}

/* Fixed global background canvas */
.bg-canvas {
  position: fixed; inset: -10% -10% 0 -10%; z-index: -2; pointer-events: none;
  background:
    radial-gradient(1400px 680px at 50% -22%, color-mix(in oklab, var(--bg-gradient-a) 95%, transparent), transparent 70%),
    radial-gradient(1260px 620px at 50% -20%, color-mix(in oklab, var(--bg-gradient-b) 90%, transparent), transparent 72%),
    radial-gradient(980px 460px at 20% 30%, color-mix(in oklab, var(--bg-gradient-a) 60%, transparent), transparent 72%),
    radial-gradient(900px 440px at 80% 18%, color-mix(in oklab, var(--bg-gradient-b) 60%, transparent), transparent 72%),
    radial-gradient(720px 420px at 600px calc(100% - 200px), color-mix(in oklab, var(--bg-gradient-c) 70%, transparent), transparent 74%);
  filter: saturate(120%);
}

/* Global frost overlay */
.bg-frost {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background:
    linear-gradient(0deg, rgba(255,255,255,0.02), rgba(255,255,255,0.02)),
    radial-gradient(1000px 480px at 50% -20%, rgba(255,255,255,0.05), transparent 70%);
  mix-blend-mode: normal;
}

/* Optional subtle noise using background pattern */
.bg-frost::after {
  content: "";
  position: absolute; inset: -10% -10% -10% -10%; pointer-events: none;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="80" height="80" viewBox="0 0 80 80"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="80" height="80" filter="url(%23n)" opacity="0.04"/></svg>');
  opacity: .25;
}

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(16px);
  background: rgba(255,255,255,0);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.brand-mark {
  width: 36px; height: 36px;
  display: inline-grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
  color: #fff; font-weight: 700;
  box-shadow: var(--shadow);
}
.brand-name { font-weight: 700; font-size: 20px; letter-spacing: 0.2px; }
.brand .brand-name { font-family: "Poetsen One", sans-serif; font-weight: 400; }
.brand-large .brand-mark { width: 44px; height: 44px; border-radius: 14px; }
.brand-large .brand-name { font-size: 24px; }

.nav { position: relative; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: none; border-radius: 12px;
  background: var(--glass); color: var(--text);
  backdrop-filter: blur(8px);
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; margin: 5px auto;
  background: var(--text); border-radius: 2px;
}
.nav-list { display: flex; gap: 22px; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-list a { color: var(--text); text-decoration: none; font-weight: 600; opacity: 0.9; }
.nav-list a:hover { opacity: 1; }

/* Icon button for theme toggle */
.icon-btn { height: 36px; width: 36px; border: 1px solid rgba(255,255,255,0.18); background: var(--glass); color: var(--text); border-radius: 10px; display: inline-grid; place-items: center; cursor: pointer; }
.icon-btn:hover { background: rgba(255,255,255,0.12); }
.icon-sun, .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: inline; }
html:not([data-theme="light"]) .icon-sun { display: inline; }
html:not([data-theme="light"]) .icon-moon { display: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 18px; border-radius: 100px;
  text-decoration: none; font-weight: 700; letter-spacing: 0.2px;
  transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease, background .2s ease;
  will-change: transform;
}
.btn-small { height: 36px; padding: 0 14px; border-radius: 100px; font-weight: 700; }
.btn-primary { color: #0c1222; background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); box-shadow: none; }
.site-header .btn-primary, .site-header .btn-primary:visited { color: #0a0f1a; }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost { color: var(--text); background: transparent; border: 1px solid rgba(255,255,255,0.18); }
.btn-ghost:hover { background: rgba(255,255,255,0.06); }

/* Hero */
.hero {
  position: relative; overflow: hidden;
}
.hero-inner { padding: 132px 0 84px; }
.hero-title {
  font-size: clamp(40px, 8vw, 76px);
  line-height: 1.08; margin: 0 0 16px;
  letter-spacing: -0.02em; font-weight: 800;
}
.hero-title { font-family: "Poetsen One", sans-serif; font-weight: 400; letter-spacing: 0.5px; }
.hero-subtitle {
  font-size: clamp(16px, 2.4vw, 22px);
  color: var(--muted); max-width: 820px; margin: 0 0 28px;
}
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }

/* Section */
.section { padding: 110px 0; }
.section-title { font-size: clamp(26px, 3.6vw, 40px); margin: 0 0 10px; letter-spacing: -0.02em; }
.section-subtitle { color: var(--muted); margin: 0 0 32px; max-width: 760px; }

/* Cards & Grid */
.grid { display: grid; gap: 24px; }
.features-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: none;
}
.card.feature .icon { font-size: 28px; margin-bottom: 8px; }
.card.feature .icon svg { width: 24px; height: 24px; color: var(--text); opacity: .9; }
.card.feature h3 { margin: 0 0 8px; font-size: 18px; }
.card.feature p { margin: 0; color: var(--muted); }

/* Why */
.reasons-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) { .reasons-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .reasons-grid { grid-template-columns: 1fr; } }
.reason-card { display: grid; grid-template-columns: 48px 1fr; gap: 14px; align-items: center; position: relative; overflow: hidden; }
.reason-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 0; background: transparent; box-shadow: none; color: #ffffff; }
.reason-icon svg { width: 24px; height: 24px; color: #ffffff; opacity: 0.95; }
.reason-text { margin: 0; font-weight: 700; letter-spacing: 0.1px; }
.reason-card::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; box-shadow: 0 0 0 0 rgba(150,243,216,0.6); transition: box-shadow .25s ease; }
.reason-card:hover::after { box-shadow: 0 0 0 2px rgba(150,243,216,0.45), 0 10px 28px rgba(0,0,0,0.14) inset; }

/* Digital */
.split { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; align-items: center; }
@media (max-width: 920px) { .split { grid-template-columns: 1fr; } }
.tags { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0 0; }
.tag { padding: 8px 12px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.18); background: rgba(255,255,255,0.06); }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(160px, 1fr)); gap: 16px; align-items: stretch; justify-items: stretch; }
.metric { display: grid; place-items: center; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); border-radius: var(--radius); padding: 24px 18px; text-align: center; }
.metric .num { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; }
.metric .label { color: var(--muted); margin-top: 6px; font-size: 12px; letter-spacing: 0.2px; }
@media (max-width: 1100px) { .metrics { grid-template-columns: repeat(2, minmax(160px, 1fr)); } }
@media (max-width: 560px) { .metrics { grid-template-columns: 1fr 1fr; } .metric { padding: 18px 12px; } .metric .num { font-size: 28px; } }

/* Solutions */
.solutions-grid { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .solutions-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .solutions-grid { grid-template-columns: 1fr; } }
.solution { height: 120px; display: grid; place-items: center; font-weight: 700; }

/* CTA */
.section-cta { padding: 110px 0 120px; }
.cta-inner { text-align: left; padding: 44px; }
.cta-inner .hero-actions { justify-content: flex-start; }
/* Normalize vertical spacing inside CTA card */
.cta-inner > :first-child { margin-top: 0; }
.cta-inner > :last-child { margin-bottom: 0; }
.cta-inner h2 { margin: 0 0 12px; }
.cta-inner p { margin: 0; }
.cta-inner .hero-actions { margin-top: 18px; }

/* About & Footer */
.section-about { padding-top: 0; }
.site-footer { padding: 70px 0 90px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 2fr; gap: 26px; align-items: start; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.footer-col h3 { margin: 0 0 12px; font-size: 16px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; color: var(--muted); }
.footer-col li { margin: 8px 0; }
.footer-center { text-align: left; }
.footer-company { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: 0.2px; font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif; }
.footer-note { color: var(--muted); margin-top: 8px; font-size: 13px; }

/* Glass helpers */
.glass { background: var(--glass); border: 1px solid rgba(255,255,255,0.18); backdrop-filter: blur(16px) saturate(160%); }
.glass { -webkit-backdrop-filter: blur(16px) saturate(160%); border-radius: var(--radius-lg); }

/* Progress bar */
.progressbar { position: fixed; top: 0; left: 0; right: 0; height: 3px; background: transparent; z-index: 200; }
.progressbar__inner { height: 100%; width: 0%; background: linear-gradient(90deg, var(--brand-1), var(--brand-2)); box-shadow: 0 0 12px rgba(150,243,216,0.5); }

/* Single global spot handled on body background */

/* Reveal animation */
[data-reveal] { opacity: 0; transform: translateY(12px) scale(0.98); will-change: transform, opacity; }
.revealed { opacity: 1 !important; transform: none !important; transition: opacity .5s cubic-bezier(.2,.6,.2,1), transform .5s cubic-bezier(.2,.6,.2,1); }

/* Tilt cards */
[data-tilt] { transform-style: preserve-3d; }
[data-tilt]:hover { transform: perspective(900px) rotateX(2deg) rotateY(-2deg) translateY(-2px); }

/* Magnet buttons */
[data-magnet] { position: relative; overflow: hidden; }
[data-magnet]::after { content: ""; position: absolute; inset: 0; background: radial-gradient(180px 180px at var(--mx,50%) var(--my,50%), rgba(255,255,255,0.28), transparent 60%); opacity: 0; transition: opacity .25s ease; }
[data-magnet].magnet-on::after { opacity: 1; }

/* Responsive nav */
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-list {
    position: absolute; right: 0; top: 52px; width: 240px;
    display: none; flex-direction: column; gap: 0; padding: 8px;
    background: var(--glass); backdrop-filter: blur(12px); border-radius: 14px; border: 1px solid rgba(255,255,255,0.18);
  }
  .nav-list li { width: 100%; }
  .nav-list a { display: block; padding: 10px 12px; }
  .nav.open .nav-list { display: flex; }
}

/* Subtle motion */
.card, .btn, .brand-mark { transition: transform .25s ease, box-shadow .25s ease, background .25s ease; }
.card:hover { transform: translateY(-2px); }

/* Reduce motion respect */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

.container {
  width: 100%;
  max-width: 90%;
  margin: 0 auto;
  padding-left: clamp(16px, 5vw, 32px);
  padding-right: clamp(16px, 5vw, 32px);
}

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 300; display: none; }
.lightbox[aria-hidden="false"] { display: grid; place-items: center; }
.lightbox::before { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,0.001); }
.lightbox-inner { position: relative; max-width: min(480px, 92vw); max-height: min(72vh, 92vh); z-index: 1; display: grid; grid-template-rows: 1fr auto; gap: 10px; transform: translateY(80px); transition: transform .28s cubic-bezier(.2,.6,.2,1); }
.lightbox[aria-hidden="false"] .lightbox-inner { transform: translateY(0); }
.lightbox-inner img { max-width: 100%; max-height: 100%; border-radius: 12px; display: block; }
.lightbox-shade { height: 48px; display: grid; place-items: center; color: #fff; opacity: .8; cursor: pointer; }

html.modal-open { overflow-y: scroll; }