/* ============================================================
   XUGUANG SMART LIGHTING — dark, glowing, Govee-inspired
   ============================================================ */
:root{
  --bg:#07080b;
  --bg-2:#0b0d12;
  --bg-3:#10131a;
  --surface:rgba(255,255,255,.04);
  --surface-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.09);
  --border-2:rgba(255,255,255,.16);
  --text:#eef0f4;
  --muted:#9aa2b0;
  --muted-2:#6c7484;
  --amber:#ffb25e;
  --amber-deep:#ff8a3d;
  --amber-soft:rgba(255,178,94,.16);
  --cyan:#3fd8ca;
  --cyan-soft:rgba(63,216,202,.14);
  --grad-accent:linear-gradient(135deg,#ffc46b 0%,#ff8a3d 55%,#ff6a3d 100%);
  --grad-text:linear-gradient(100deg,#ffd39b 0%,#ffb25e 45%,#ff7a3d 100%);
  --radius:22px;
  --radius-lg:30px;
  --maxw:1200px;
  --shadow:0 30px 80px -30px rgba(0,0,0,.7);
  --glow-amber:0 12px 44px -10px rgba(255,150,60,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  font-family:"Inter","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,.stat-num,.result-num{font-family:"Space Grotesk","Noto Sans SC","Inter",sans-serif;font-weight:700}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(255,177,92,.28)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ambient page glows */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60% 50% at 85% -10%,rgba(255,130,60,.10),transparent 60%),
    radial-gradient(50% 40% at 8% 20%,rgba(63,216,202,.07),transparent 60%),
    radial-gradient(70% 60% at 50% 120%,rgba(255,120,60,.06),transparent 60%);
}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .35s var(--ease),border-color .35s,backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(7,8,11,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-img{height:38px;width:auto;display:block;transition:filter .5s var(--ease);
  filter:sepia(.60) saturate(1.45) brightness(1.06) drop-shadow(0 2px 12px rgba(255,180,105,.35))}
.footer .brand-mark .logo-img{height:34px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-cn{font-size:19px;font-weight:800;letter-spacing:.5px}
.brand-en{font-size:9.5px;letter-spacing:2.4px;color:var(--muted-2);font-weight:600;margin-top:3px}
.nav-links{display:flex;gap:20px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--muted);font-weight:500;position:relative;padding:6px 0;transition:color .25s;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--grad-accent);border-radius:2px;transition:width .3s var(--ease)}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:16px}
.menu-btn{display:none;flex-direction:column;gap:5px;padding:8px}
.menu-btn span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.menu-btn.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn.open span:nth-child(2){opacity:0}
.menu-btn.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* theme toggle */
.theme-toggle{position:relative;width:40px;height:40px;border-radius:50%;background:var(--surface);
  border:1px solid var(--border);display:grid;place-items:center;color:var(--muted);transition:color .3s,border-color .3s}
.theme-toggle .ic-sun,.theme-toggle .ic-moon{position:absolute;width:20px;height:20px;transition:opacity .3s,transform .5s var(--ease)}
.theme-toggle .ic-moon{opacity:0;transform:rotate(-90deg) scale(.5)}
.theme-toggle:hover{color:var(--text);border-color:var(--border-2)}
.theme-toggle.cool{color:var(--cyan)}
.theme-toggle.cool .ic-sun{opacity:0;transform:rotate(90deg) scale(.5)}
.theme-toggle.cool .ic-moon{opacity:1;transform:rotate(0) scale(1)}

/* lang toggle */
.lang-toggle{display:flex;align-items:center;gap:0;background:var(--surface);border:1px solid var(--border);
  border-radius:40px;padding:4px 6px;position:relative;font-weight:600}
.lang-toggle .lang-on,.lang-toggle .lang-en{position:relative;z-index:2;padding:4px 9px;font-size:13px;color:var(--muted);transition:color .3s;border-radius:40px}
.lang-toggle .lang-slider{position:absolute;top:4px;left:4px;width:31px;height:calc(100% - 8px);background:var(--grad-accent);border-radius:40px;transition:transform .3s var(--ease),width .3s var(--ease);box-shadow:var(--glow-amber)}
.lang-toggle.en .lang-slider{transform:translateX(31px);width:40px}
.lang-toggle.en .lang-en{color:#241203}
.lang-toggle:not(.en) .lang-on{color:#241203}
.lang-toggle.en .lang-on{color:var(--muted)}
.lang-toggle:not(.en) .lang-en{color:var(--muted)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;
  padding:14px 28px;border-radius:60px;font-size:15px;transition:transform .25s var(--ease),box-shadow .25s,background .25s;white-space:nowrap}
.btn-primary{background:var(--grad-accent);color:#241203;box-shadow:var(--glow-amber)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 52px -12px rgba(255,150,60,.6)}
.btn-ghost{background:rgba(255,255,255,.05);border:1px solid var(--border-2);color:var(--text);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.btn-sm{padding:10px 22px;font-size:14px}

/* ============ HERO ============ */
.hero{position:relative;padding:150px 0 0;overflow:hidden;display:flex;flex-direction:column}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 30%;opacity:.5}
.hero-overlay{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,8,11,.55) 0%,rgba(7,8,11,.82) 55%,var(--bg) 100%)}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px)}
.hero-glow-a{width:420px;height:420px;top:-80px;right:6%;background:radial-gradient(circle,rgba(255,150,60,.42),transparent 70%)}
.hero-glow-b{width:340px;height:340px;bottom:-60px;left:4%;background:radial-gradient(circle,rgba(63,216,202,.28),transparent 70%)}
.hero-inner{position:relative;max-width:860px;margin:0 auto;text-align:center;padding-top:24px}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:2.6px;font-weight:600;color:var(--amber);
  text-transform:uppercase;margin-bottom:22px;padding:8px 18px;border:1px solid rgba(255,178,94,.3);
  border-radius:40px;background:rgba(255,178,94,.07)}
.hero-title{font-size:clamp(38px,6.2vw,76px);line-height:1.06;letter-spacing:-1px;margin-bottom:24px}
.text-grad{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:640px;margin:0 auto 34px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:70px}
.hero-trust{margin-top:8px;opacity:.9}
.hero-trust>span{font-size:12px;letter-spacing:2.4px;color:var(--muted-2);font-weight:600;text-transform:uppercase}
.trust-marks{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center;margin-top:18px}
.trust-marks span{font-size:17px;font-weight:600;color:#cfd4dd;letter-spacing:1px;opacity:.85}
.trust-marks i{width:5px;height:5px;border-radius:50%;background:var(--amber);opacity:.6}

/* hero stats */
.hero-stats{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:14px;
  margin-top:60px;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 26px;backdrop-filter:blur(10px)}
.stat{text-align:center;padding:6px 6px;position:relative}
.stat:not(:last-child)::after{content:"";position:absolute;right:-8px;top:20%;height:60%;width:1px;background:var(--border)}
.stat-num{font-size:clamp(24px,2.8vw,36px);font-weight:700;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.stat-suf{font-size:.55em;margin-left:3px;font-weight:700}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px}

/* ============ SECTIONS ============ */
.section{position:relative;padding:110px 0}
.section-alt{background:linear-gradient(180deg,var(--bg-2),var(--bg));}
.section-head{max-width:720px;margin:0 auto 60px;text-align:center}
.kicker{display:inline-block;font-size:12.5px;letter-spacing:2.4px;font-weight:700;color:var(--amber);
  text-transform:uppercase;margin-bottom:16px}
.kicker.light{color:#241203}
.section-title{font-size:clamp(30px,4.2vw,48px);line-height:1.15;letter-spacing:-.6px;margin-bottom:20px}
.section-sub{font-size:17px;color:var(--muted);line-height:1.75}

/* --- text wrapping polish (fix CJK orphan lines) --- */
p, li, td, .adv-vs, .adv-desc, .org-list p, .org-list span, .tech-card p, .scene-body p,
.case-list span, .rd-step p, .prod-body p, .prod-more p, .compare-table td{
  overflow-wrap:break-word;
  text-wrap:pretty;
}
/* centered short paragraphs / headings: balance lines so no single-char orphan */
.section-sub,.hero-sub,.cta-sub,.case-quote p,.section-title{
  text-wrap:balance;
}

/* reveal animation */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ ABOUT ============ */
.about-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:stretch}
.about-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:460px;border:1px solid var(--border)}
.about-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.about-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(7,8,11,.85) 100%)}
.media-badge{position:absolute;left:22px;bottom:22px;z-index:2;background:rgba(7,8,11,.7);border:1px solid var(--border-2);
  backdrop-filter:blur(12px);padding:12px 20px;border-radius:16px;font-weight:600;font-size:15px}
.about-cards{display:flex;flex-direction:column;gap:20px}
.org-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 28px;backdrop-filter:blur(8px);transition:border-color .3s,transform .3s}
.org-card:hover{border-color:rgba(255,178,94,.35);transform:translateY(-4px)}
.org-card.accent{border-color:rgba(63,216,202,.22)}
.org-card.accent:hover{border-color:rgba(63,216,202,.42)}
.org-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.org-head h3{font-size:21px}
.org-tag{font-size:12px;font-weight:700;color:var(--amber);background:var(--amber-soft);
  padding:6px 12px;border-radius:30px;white-space:nowrap}
.org-card.accent .org-tag{color:var(--cyan);background:var(--cyan-soft)}
.org-list li{display:block;padding:11px 0;border-top:1px solid var(--border)}
.org-list li:first-child{border-top:none;padding-top:0}
.org-list span{font-size:15px;font-weight:600;color:var(--text);display:block;margin-bottom:3px}
.org-list p{font-size:14px;color:var(--muted);line-height:1.6}

/* ============ ADVANTAGES ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.adv-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;position:relative;overflow:hidden;transition:transform .3s var(--ease),border-color .3s}
.adv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.adv-card:hover{transform:translateY(-6px);border-color:rgba(255,178,94,.3)}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;margin-bottom:20px;
  background:var(--amber-soft);color:var(--amber);border:1px solid rgba(255,178,94,.2)}
.adv-icon svg{width:28px;height:28px}
.adv-card h3{font-size:20px;margin-bottom:10px}
.adv-desc{font-size:14.5px;color:var(--text);margin-bottom:14px;font-weight:500}
.adv-vs{font-size:13px;color:var(--muted-2);line-height:1.6}
.adv-vs span{color:var(--muted);font-weight:600;font-style:italic}

/* ============ COMPARE TABLE ============ */
.compare-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow-x:auto;backdrop-filter:blur(8px)}
.compare-table{width:100%;border-collapse:collapse;min-width:680px;font-size:15px}
.compare-table thead th{font-size:13px;letter-spacing:1.6px;text-transform:uppercase;font-weight:700;
  color:var(--muted);text-align:left;padding:20px 24px;border-bottom:1px solid var(--border-2);white-space:nowrap}
.compare-table .col-dim{width:20%}
.compare-table thead .col-xg{color:var(--amber)}
.compare-table td{padding:20px 24px;border-bottom:1px solid var(--border);line-height:1.6;vertical-align:top}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .col-dim{font-weight:600;color:var(--text);white-space:nowrap}
.compare-table .col-other{color:var(--muted)}
.compare-table .col-xg{color:var(--text);font-weight:500;border-left:1px solid var(--border-2);
  background:linear-gradient(90deg,rgba(255,178,94,.06),transparent 70%)}
.compare-table tbody tr:hover .col-dim,.compare-table tbody tr:hover .col-xg{color:var(--amber)}
.compare-table thead .col-other{color:var(--muted-2)}
html[data-theme="tech"] .compare-table thead .col-xg{color:var(--cyan)}
html[data-theme="tech"] .compare-table .col-xg{background:linear-gradient(90deg,rgba(87,200,255,.08),transparent 70%)}
html[data-theme="tech"] .compare-table tbody tr:hover .col-dim,
html[data-theme="tech"] .compare-table tbody tr:hover .col-xg{color:var(--cyan)}

/* ============ PRODUCTS ============ */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s,border-color .3s}
.prod-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--border-2)}
.prod-media{aspect-ratio:1/1.05;overflow:hidden;position:relative}
.prod-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.prod-card:hover .prod-media img{transform:scale(1.07)}
.prod-body{padding:22px 22px 26px}
.prod-cat{font-size:11px;letter-spacing:1.6px;font-weight:700;color:var(--cyan);text-transform:uppercase;
  background:var(--cyan-soft);padding:5px 11px;border-radius:30px}
.prod-body h3{font-size:19px;margin:14px 0 8px}
.prod-body p{font-size:14px;color:var(--muted);line-height:1.65}
.prod-more{display:flex;gap:20px;align-items:center;margin-top:26px;background:var(--surface-2);
  border:1px solid var(--border);border-radius:var(--radius);padding:26px 28px}
.prod-more-icon{width:56px;height:56px;flex-shrink:0;border-radius:16px;display:grid;place-items:center;
  background:var(--amber-soft);color:var(--amber);border:1px solid rgba(255,178,94,.2)}
.prod-more-icon svg{width:28px;height:28px}
.prod-more h3{font-size:18px;margin-bottom:5px}
.prod-more p{font-size:14.5px;color:var(--muted)}

/* ============ USE SCENES ============ */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s,border-color .3s}
.scene-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--border-2)}
.scene-media{aspect-ratio:4/3;overflow:hidden;position:relative}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(7,8,11,.55) 100%)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.06)}
.scene-body{padding:20px 20px 24px;position:relative}
.scene-tag{display:inline-block;font-size:11px;letter-spacing:1.4px;font-weight:700;color:var(--cyan);
  text-transform:uppercase;background:var(--cyan-soft);padding:5px 11px;border-radius:30px}
.scene-body h3{font-size:17.5px;margin:13px 0 7px}
.scene-body p{font-size:13.8px;color:var(--muted);line-height:1.62}

/* ============ TECH ============ */
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.tech-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);background:#000}
.tech-visual img{width:100%;height:auto;display:block;mix-blend-mode:screen}
.tech-visual::after{content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 120px rgba(255,150,60,.12)}
.tech-visual-chip{position:absolute;left:20px;bottom:20px;z-index:2;background:rgba(7,8,11,.72);
  border:1px solid var(--border-2);backdrop-filter:blur(12px);padding:10px 18px;border-radius:40px;
  font-size:13px;font-weight:600}
.tech-cards{display:flex;flex-direction:column;gap:16px}
.tech-card{display:flex;gap:18px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px 24px;transition:border-color .3s,transform .3s}
.tech-card:hover{border-color:rgba(63,216,202,.35);transform:translateX(4px)}
.tech-icon{width:46px;height:46px;flex-shrink:0;border-radius:14px;display:grid;place-items:center;
  background:var(--cyan-soft);color:var(--cyan);border:1px solid rgba(63,216,202,.2)}
.tech-icon svg{width:26px;height:26px}
.tech-card h3{font-size:17px;margin-bottom:6px}
.tech-card p{font-size:14px;color:var(--muted);line-height:1.62}

/* ============ MARQUEE (brands) ============ */
.marquee{overflow:hidden;padding:26px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,178,94,.03),rgba(63,216,202,.02))}
.marquee-track{display:flex;gap:70px;width:max-content;animation:marquee 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{font-family:"Space Grotesk",sans-serif;font-size:28px;font-weight:700;letter-spacing:1px;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.38);white-space:nowrap;transition:.3s}
.marquee-item:hover{color:var(--amber);-webkit-text-stroke:1px var(--amber)}
@keyframes marquee{to{transform:translateX(-50%)}}
.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.brand-pill{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 24px;transition:border-color .3s,transform .3s}
.brand-pill:hover{border-color:rgba(255,178,94,.3);transform:translateY(-4px)}
.brand-pill b{font-size:18px;display:block;margin-bottom:8px;letter-spacing:.4px}
.brand-pill span{font-size:13.5px;color:var(--muted);line-height:1.6}

/* ============ CASE ============ */
.case-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:stretch;margin-bottom:34px}
.case-img{border-radius:var(--radius-lg);overflow:hidden;min-height:300px;position:relative;border:1px solid var(--border)}
.case-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.case-quote{display:flex;flex-direction:column;justify-content:center;background:var(--surface);
  border:1px solid rgba(255,178,94,.24);border-radius:var(--radius-lg);padding:38px;position:relative;overflow:hidden}
.case-quote::before{content:"“";position:absolute;top:-20px;left:20px;font-size:150px;font-family:Georgia,serif;color:rgba(255,178,94,.12);line-height:1}
.case-quote p{font-size:22px;line-height:1.55;font-weight:600;position:relative;z-index:1}
.case-quote-meta{margin-top:22px;font-size:13px;color:var(--muted);letter-spacing:1px}
.case-cols{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:40px}
.case-col{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 28px}
.case-h{font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--amber);margin-bottom:20px}
.case-col:last-child .case-h{color:var(--cyan)}
.case-list li{padding:13px 0;border-top:1px solid var(--border)}
.case-list li:first-child{border-top:none;padding-top:0}
.case-list b{display:block;font-size:15.5px;margin-bottom:3px}
.case-list span{font-size:13.8px;color:var(--muted);line-height:1.6}
.case-results{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.result{text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 16px;position:relative;overflow:hidden}
.result::after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--grad-accent);opacity:.7}
.result-num{font-size:clamp(30px,3.6vw,44px);font-weight:700;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.result-num span{font-size:.45em;font-weight:600;margin-left:4px}
.result-label{font-size:14px;color:var(--muted);margin-top:10px}

/* ============ R&D ============ */
.rd-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:30px}
.rd-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 24px;position:relative;transition:border-color .3s,transform .3s}
.rd-step:hover{border-color:rgba(63,216,202,.35);transform:translateY(-5px)}
.rd-num{font-family:"Space Grotesk",sans-serif;font-size:42px;font-weight:700;color:transparent;
  -webkit-text-stroke:1.4px rgba(255,178,94,.6);display:block;margin-bottom:14px}
.rd-step h3{font-size:18px;margin-bottom:10px}
.rd-step p{font-size:13.8px;color:var(--muted);line-height:1.62}
.rd-roles{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.rd-role{background:var(--surface-2);border:1px solid var(--border);border-radius:16px;padding:16px 12px;text-align:center}
.rd-role span{font-size:14.5px;font-weight:600;display:block;margin-bottom:4px}
.rd-role small{font-size:12px;color:var(--muted-2)}

/* ============ COMPLIANCE ============ */
.comp-badges{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-bottom:44px}
.badge{font-family:"Space Grotesk",sans-serif;font-size:20px;font-weight:700;letter-spacing:1px;color:var(--text);
  padding:18px 30px;border-radius:18px;background:var(--surface);border:1px solid var(--border-2);
  transition:transform .3s,color .3s,border-color .3s}
.badge:hover{transform:translateY(-4px);color:var(--amber);border-color:rgba(255,178,94,.4)}
.comp-note{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.comp-note-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;text-align:center}
.comp-note-item b{font-size:17px;display:block;margin-bottom:6px}
.comp-note-item span{font-size:14px;color:var(--muted);letter-spacing:1px}

/* ============ CTA ============ */
.cta{padding:120px 0}
.cta-panel{position:relative;border-radius:40px;overflow:hidden;padding:70px 30px;text-align:center;
  background:linear-gradient(135deg,#1a130a,#241206 55%,#160e08);
  border:1px solid rgba(255,178,94,.28);box-shadow:var(--shadow)}
.cta-glow{position:absolute;width:520px;height:520px;border-radius:50%;filter:blur(100px);
  background:radial-gradient(circle,rgba(255,150,60,.4),transparent 70%);top:-180px;left:50%;transform:translateX(-50%)}
.cta-content{position:relative;z-index:2;max-width:760px;margin:0 auto}
.cta-title{font-size:clamp(32px,4.4vw,52px);letter-spacing:-.6px;margin-bottom:18px}
.cta-sub{font-size:18px;color:#d9c9b2;max-width:560px;margin:0 auto 42px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;text-align:left}
.contact-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;
  padding:22px 22px;transition:background .3s,transform .3s,border-color .3s}
.contact-card:hover{background:rgba(255,255,255,.11);transform:translateY(-4px);border-color:rgba(255,178,94,.4)}
.contact-ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(255,178,94,.16);color:var(--amber);border:1px solid rgba(255,178,94,.25)}
.contact-ico svg{width:24px;height:24px}
.contact-k{display:block;font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:#c8b28e;margin-bottom:4px;font-weight:600}
.contact-v{font-size:16.5px;font-weight:600;color:#fff;word-break:break-word}
.cta .contact-v{color:#fff}

/* ============ FOOTER ============ */
.footer{background:var(--bg-3);border-top:1px solid var(--border);padding:64px 0 0}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.footer-brand{display:flex;gap:14px;align-items:flex-start}
.footer-name{font-size:18px;font-weight:800;margin-bottom:8px}
.footer-brand p{font-size:13px;color:var(--muted);line-height:1.6}
.footer-col h4{font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--muted-2);margin-bottom:18px;font-weight:700}
.footer-col a,.footer-col p{display:block;font-size:14.5px;color:var(--muted);margin-bottom:12px;transition:color .25s}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{border-top:1px solid var(--border);padding:22px 0}
.footer-bottom span{font-size:13px;color:var(--muted-2)}

/* ============================================================
   COOL "TECH" THEME  (cooler + brighter, cyan→violet)
   ============================================================ */
html[data-theme="tech"]{
  --bg:#0a0e17;
  --bg-2:#0d1320;
  --bg-3:#121a2b;
  --surface:rgba(160,200,255,.06);
  --surface-2:rgba(160,200,255,.10);
  --border:rgba(175,205,255,.13);
  --border-2:rgba(175,205,255,.22);
  --text:#eef4fc;
  --muted:#a9b6cb;
  --muted-2:#7b87a0;
  --amber:#5cc8ff;
  --amber-deep:#3aa6ff;
  --amber-soft:rgba(92,200,255,.16);
  --cyan:#a78bfa;
  --cyan-soft:rgba(167,139,250,.16);
  --grad-accent:linear-gradient(135deg,#7fdcff 0%,#4aa8ff 55%,#7b7bff 100%);
  --grad-text:linear-gradient(100deg,#bfe9ff 0%,#5cc8ff 45%,#7b8bff 100%);
  --glow-amber:0 12px 44px -10px rgba(80,170,255,.6);
}
html[data-theme="tech"] body::before{
  background:
    radial-gradient(60% 50% at 85% -10%,rgba(80,170,255,.16),transparent 60%),
    radial-gradient(50% 40% at 8% 20%,rgba(150,120,255,.14),transparent 60%),
    radial-gradient(70% 60% at 50% 120%,rgba(80,170,255,.12),transparent 60%);
}
html[data-theme="tech"] .hero-glow-a{background:radial-gradient(circle,rgba(80,170,255,.5),transparent 70%)}
html[data-theme="tech"] .hero-glow-b{background:radial-gradient(circle,rgba(140,120,255,.36),transparent 70%)}
html[data-theme="tech"] .eyebrow{border-color:rgba(92,200,255,.35);background:rgba(92,200,255,.08)}
html[data-theme="tech"] .logo-img{filter:saturate(1.28) brightness(1.08) drop-shadow(0 2px 12px rgba(95,185,255,.36))}
html[data-theme="tech"] .btn-primary{color:#05243d;box-shadow:0 12px 44px -10px rgba(80,170,255,.6)}
html[data-theme="tech"] .lang-toggle.en .lang-en,
html[data-theme="tech"] .lang-toggle:not(.en) .lang-on{color:#062a44}
html[data-theme="tech"] .adv-card:hover{border-color:rgba(92,200,255,.32)}
html[data-theme="tech"] .adv-icon{border-color:rgba(92,200,255,.24)}
html[data-theme="tech"] .prod-more-icon{border-color:rgba(92,200,255,.24)}
html[data-theme="tech"] .brand-pill:hover{border-color:rgba(92,200,255,.32)}
html[data-theme="tech"] .case-quote{border-color:rgba(92,200,255,.28)}
html[data-theme="tech"] .case-quote::before{color:rgba(92,200,255,.12)}
html[data-theme="tech"] .rd-num{-webkit-text-stroke-color:rgba(92,200,255,.6)}
html[data-theme="tech"] .cta-panel{background:linear-gradient(135deg,#0b1526,#0e1a33 55%,#0a1122);border-color:rgba(92,200,255,.32)}
html[data-theme="tech"] .cta-glow{background:radial-gradient(circle,rgba(80,170,255,.45),transparent 70%)}
html[data-theme="tech"] .cta .kicker.light{color:var(--cyan)}
html[data-theme="tech"] .cta-sub{color:#b8cede}
html[data-theme="tech"] .contact-ico{color:var(--cyan);background:rgba(92,200,255,.14);border-color:rgba(92,200,255,.28)}
html[data-theme="tech"] .contact-k{color:#a9c4e8}

/* mid-width nav keeps things tidy */
@media(max-width:1180px){
  .nav-actions .btn-sm{display:none}
  .nav-links{gap:15px}
  .nav-links a{font-size:14px}
  .nav-actions{gap:10px}
}

/* ============ RESPONSIVE ============ */
@media(max-width:1024px){
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .rd-flow{grid-template-columns:repeat(2,1fr)}
  .rd-roles{grid-template-columns:repeat(3,1fr)}
  .hero-stats{grid-template-columns:repeat(3,1fr)}
  .about-grid,.tech-grid,.case-hero{grid-template-columns:1fr}
  .about-media{min-height:360px}
  .case-cols{grid-template-columns:1fr}
  .case-results{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .nav-links{position:fixed;top:74px;left:0;right:0;background:rgba(7,8,11,.96);backdrop-filter:blur(20px);
    flex-direction:column;gap:0;padding:10px 24px;border-bottom:1px solid var(--border);
    transform:translateY(-130%);transition:transform .4s var(--ease);display:flex}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{width:100%;padding:15px 0;border-bottom:1px solid var(--border);font-size:16px}
  .menu-btn{display:flex}
  .nav-actions .btn-sm{display:none}
  .adv-grid,.prod-grid,.scene-grid,.rd-flow{grid-template-columns:1fr}
  .rd-roles{grid-template-columns:repeat(2,1fr)}
  .brand-grid{grid-template-columns:1fr}
  .comp-note{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stat::after{display:none}
  .hero{padding-top:120px}
  .section{padding:80px 0}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}