/* =========== TOKENS =========== */
:root{
  --bg-0:#05070f;
  --bg-1:#0a1028;
  --bg-2:#11172e;
  --surface:rgba(255,255,255,0.04);
  --surface-hi:rgba(255,255,255,0.08);
  --glass:rgba(255,255,255,0.05);
  --glass-border:rgba(255,255,255,0.12);
  --text:#eaf1ff;
  --text-dim:#9aa6c7;
  --text-soft:#c2cce6;
  --accent-1:#00d4ff;
  --accent-2:#5b8cff;
  --accent-3:#ff6b35;   /* heat */
  --accent-5:#ffd166;
  --accent-6:#06d6a0;
  --grad-hero:linear-gradient(135deg,#0a1028 0%,#111a3d 45%,#22183a 100%);
  --grad-accent:linear-gradient(135deg,#00d4ff 0%,#5b8cff 50%,#ff6b35 100%);
  --grad-fire:linear-gradient(180deg,#ffd166 0%,#ff6b35 55%,#c0261b 100%);
  --grad-water:linear-gradient(180deg,#b8f1ff 0%,#00d4ff 50%,#1e6cff 100%);
  --shadow-lg:0 30px 80px -20px rgba(0,0,0,.6), 0 0 60px rgba(0,212,255,.08);
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg-0);
  line-height:1.7;
  overflow-x:hidden;
  position:relative;
  min-height:100vh;
}
a{color:var(--accent-1);text-decoration:none;transition:color .25s,transform .25s}
a:hover{color:var(--accent-5)}
img,svg{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--accent-1);outline-offset:3px;border-radius:6px}

/* =========== AMBIENT BACKGROUND =========== */
.ambient-bg{
  position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;
  background:var(--grad-hero);
}
.orb{
  position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;
  mix-blend-mode:screen;
}
.orb-1{width:520px;height:520px;top:-120px;left:-120px;background:radial-gradient(circle,#00d4ff 0%,transparent 60%);animation:float1 22s ease-in-out infinite}
.orb-2{width:460px;height:460px;top:30%;right:-140px;background:radial-gradient(circle,#ff6b35 0%,transparent 60%);animation:float2 28s ease-in-out infinite}
.orb-3{width:420px;height:420px;bottom:-160px;left:30%;background:radial-gradient(circle,#5b8cff 0%,transparent 60%);animation:float1 30s ease-in-out infinite reverse}

@keyframes float1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(60px,-40px) scale(1.1)}}
@keyframes float2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-50px,40px) scale(1.15)}}

.grid-floor{
  position:absolute;bottom:0;left:0;right:0;height:60vh;
  background-image:
    linear-gradient(rgba(91,140,255,.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(91,140,255,.12) 1px,transparent 1px);
  background-size:60px 60px;
  transform:perspective(600px) rotateX(60deg);
  transform-origin:bottom;
  mask-image:linear-gradient(to top,rgba(0,0,0,1),transparent 70%);
  animation:gridMove 20s linear infinite;
}
@keyframes gridMove{from{background-position:0 0}to{background-position:60px 60px}}

/* =========== PROGRESS BAR =========== */
.progress-bar{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-accent);
  z-index:1000;transition:width .1s linear;
  box-shadow:0 0 10px var(--accent-1);
}

/* =========== CANVAS =========== */
#particleCanvas{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
}

/* =========== DROPLETS =========== */
.floating-droplets{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.drop{
  position:absolute;top:-20px;width:14px;height:18px;
  background:var(--grad-water);
  border-radius:50% 50% 50% 50% / 60% 60% 40% 40%;
  opacity:.35;filter:blur(.5px);
  animation:dropFall linear infinite;
}
.d1{left:5%;animation-duration:14s;animation-delay:0s}
.d2{left:22%;animation-duration:18s;animation-delay:3s;width:10px;height:13px}
.d3{left:40%;animation-duration:16s;animation-delay:1s;width:12px;height:16px}
.d4{left:62%;animation-duration:20s;animation-delay:5s}
.d5{left:78%;animation-duration:15s;animation-delay:2s;width:10px;height:13px}
.d6{left:92%;animation-duration:17s;animation-delay:4s}
@keyframes dropFall{
  0%{transform:translateY(-40px) rotate(0deg);opacity:0}
  10%{opacity:.4}
  90%{opacity:.3}
  100%{transform:translateY(110vh) rotate(360deg);opacity:0}
}

/* =========== GLASS =========== */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  box-shadow:0 8px 30px rgba(0,0,0,.3),inset 0 1px 0 rgba(255,255,255,.08);
}

/* =========== NAVIGATION =========== */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  padding:0 20px;
}
.nav-container{
  max-width:1280px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 22px;
}
.logo{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:800;letter-spacing:.5px}
.logo-mark{width:44px;height:44px;filter:drop-shadow(0 0 12px rgba(0,212,255,.45));transition:transform .4s ease}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.05)}
.logo-text{font-size:1.25rem;background:linear-gradient(90deg,#fff,#b8f0ff);-webkit-background-clip:text;background-clip:text;color:transparent}

.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{color:var(--text-dim);font-size:.95rem;font-weight:500;position:relative;padding:4px 0}
.main-nav a:not(.cta-btn):hover{color:var(--text)}
.main-nav a:not(.cta-btn)::after{
  content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;
  background:var(--grad-accent);transition:width .3s;
}
.main-nav a:not(.cta-btn):hover::after{width:100%}

.cta-btn{
  padding:10px 20px;border-radius:999px;font-weight:600;
  background:var(--grad-accent);color:#fff !important;
  box-shadow:0 6px 20px rgba(0,212,255,.35),inset 0 1px 0 rgba(255,255,255,.3);
  transition:transform .25s,box-shadow .25s;
}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,212,255,.5)}

/* =========== HERO =========== */
.hero{
  min-height:100vh;padding:140px 20px 60px;
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.hero-inner{
  max-width:1280px;width:100%;
  display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;
  perspective:1500px;
}
.hero-text{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(0,212,255,.12);border:1px solid rgba(0,212,255,.3);
  color:var(--accent-1);font-size:.82rem;font-weight:600;
  letter-spacing:1px;text-transform:uppercase;margin-bottom:22px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent-1);box-shadow:0 0 10px var(--accent-1);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{50%{opacity:.4;transform:scale(1.3)}}

h1{
  font-size:clamp(2.1rem,5vw,3.8rem);line-height:1.08;letter-spacing:-1.5px;
  font-weight:900;margin-bottom:22px;
  background:linear-gradient(180deg,#ffffff 0%,#b8f0ff 50%,#5b8cff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 60px rgba(0,212,255,.15);
}
.hero .lead{
  color:var(--text-dim);font-size:clamp(1rem,1.2rem,1.15rem);max-width:620px;margin-bottom:32px;
}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:.98rem;
  transition:all .3s;cursor:pointer;border:none;
}
.btn-icon{font-size:1.1rem}
.btn-primary{
  background:var(--grad-accent);color:#fff;
  box-shadow:0 10px 30px rgba(0,212,255,.35);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,212,255,.5)}
.btn-primary.glow{animation:glowPulse 3s ease-in-out infinite}
@keyframes glowPulse{0%,100%{box-shadow:0 10px 30px rgba(0,212,255,.35),0 0 0 0 rgba(0,212,255,.4)}50%{box-shadow:0 10px 30px rgba(0,212,255,.35),0 0 0 12px rgba(0,212,255,0)}}}

.btn-ghost{
  background:rgba(255,255,255,.05);color:var(--text);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-2px);color:var(--text);border-color:rgba(255,255,255,.3)}

.hero-stats{display:flex;gap:32px;flex-wrap:wrap;padding-top:28px;border-top:1px solid var(--glass-border)}
.stat{display:flex;flex-direction:column;align-items:flex-start}
.stat .num{font-size:2rem;font-weight:900;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat .plus{font-size:1.4rem;color:var(--accent-5);font-weight:800}
.stat .lbl{font-size:.82rem;color:var(--text-dim);margin-top:4px;text-transform:uppercase;letter-spacing:1px}

/* =========== HEATER SCENE =========== */
.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;transform-style:preserve-3d}
.heater-scene{position:relative;width:100%;max-width:420px;aspect-ratio:1;transform-style:preserve-3d}
.heater{
  position:absolute;inset:15%;
  display:flex;flex-direction:column;align-items:center;
  animation:floatHeater 6s ease-in-out infinite;
  transform-style:preserve-3d;
}
@keyframes floatHeater{0%,100%{transform:translateY(0) rotateY(-8deg)}50%{transform:translateY(-14px) rotateY(8deg)}}
.heater-top,.heater-bottom{width:90%;height:8%;background:linear-gradient(180deg,#3a4566,#1a2038);border-radius:6px;box-shadow:inset 0 2px 4px rgba(255,255,255,.15),inset 0 -2px 4px rgba(0,0,0,.4)}
.heater-body{
  width:96%;flex:1;background:linear-gradient(135deg,#4a5680 0%,#2a3356 60%,#1a2038 100%);
  border-radius:20px;position:relative;margin:4px 0;
  box-shadow:0 20px 50px rgba(0,0,0,.6),inset 0 4px 10px rgba(255,255,255,.1),inset 0 -4px 10px rgba(0,0,0,.3);
  overflow:hidden;
}
.heater-body::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,.25) 0%,transparent 40%);
  pointer-events:none;
}
.heater-panel{
  position:absolute;top:14%;left:50%;transform:translateX(-50%);
  width:70%;height:28%;background:#0a0e1a;border-radius:10px;
  padding:8px;display:flex;flex-direction:column;gap:6px;
  box-shadow:inset 0 2px 8px rgba(0,0,0,.8),0 2px 4px rgba(255,255,255,.05);
  border:1px solid #05070f;
}
.dial{
  flex:1;position:relative;border-radius:50%;width:70%;aspect-ratio:1;margin:auto;
  background:radial-gradient(circle at 30% 30%,#1a2038,#050810);
  border:2px solid #2a3356;
}
.dial-needle{
  position:absolute;top:50%;left:50%;width:2px;height:45%;
  background:var(--accent-3);transform-origin:bottom center;
  transform:translate(-50%,-100%) rotate(30deg);
  animation:needleSweep 4s ease-in-out infinite;
  box-shadow:0 0 6px var(--accent-3);
}
@keyframes needleSweep{0%,100%{transform:translate(-50%,-100%) rotate(30deg)}50%{transform:translate(-50%,-100%) rotate(75deg)}}
.dial-center{position:absolute;top:50%;left:50%;width:8px;height:8px;transform:translate(-50%,-50%);background:#c0c8e0;border-radius:50%;box-shadow:0 0 4px #fff}
.led-led{width:8px;height:8px;border-radius:50%;margin:0 auto;box-shadow:0 0 6px currentColor;animation:blink 2s ease-in-out infinite}
.led-led.red{color:#ff3d3d;animation-delay:0s}
.led-led.amber{color:var(--accent-3);animation-delay:.3s}
.led-led.green{color:var(--accent-6);animation-delay:.6s}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}

.heater-window{
  position:absolute;bottom:10%;left:50%;transform:translateX(-50%);
  width:50%;height:30%;background:#050810;border-radius:10px;
  overflow:hidden;
  box-shadow:inset 0 0 20px rgba(255,107,53,.4),0 0 20px rgba(255,107,53,.2);
}
.flame{
  position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  background:var(--grad-fire);
  border-radius:50% 50% 30% 30%;
  filter:blur(2px);opacity:.9;
  animation:flicker 1.2s ease-in-out infinite alternate;
}
.flame-1{width:50%;height:70%}
.flame-2{width:30%;height:55%;left:40%;animation-delay:.2s;animation-duration:1.4s}
.flame-3{width:20%;height:45%;left:60%;animation-delay:.4s;animation-duration:1.6s}
@keyframes flicker{
  0%{transform:translateX(-50%) scaleY(1) scaleX(1);filter:blur(2px) brightness(1)}
  100%{transform:translateX(-50%) scaleY(1.15) scaleX(.95);filter:blur(3px) brightness(1.2)}
}

.pipe{position:absolute;bottom:-15%;width:8%;height:18%;background:linear-gradient(90deg,#6b7799,#3a4566,#6b7799);border-radius:4px;box-shadow:0 6px 12px rgba(0,0,0,.5)}
.pipe-left{left:22%}
.pipe-right{right:22%}
.steam{
  position:absolute;top:-10%;width:20px;height:20px;
  background:radial-gradient(circle,rgba(255,255,255,.6),transparent 70%);
  border-radius:50%;filter:blur(6px);
  animation:steamRise 4s ease-out infinite;
  opacity:0;
}
.s1{left:30%;animation-delay:0s}
.s2{left:50%;animation-delay:1.2s}
.s3{left:70%;animation-delay:2.4s}
@keyframes steamRise{
  0%{transform:translateY(0) scale(1);opacity:0}
  20%{opacity:.7}
  100%{transform:translateY(-80px) scale(2.5);opacity:0}
}

.ripple{
  position:absolute;left:50%;top:50%;width:120px;height:120px;
  border:2px solid rgba(0,212,255,.5);border-radius:50%;
  transform:translate(-50%,-50%);
  animation:rippleOut 4s ease-out infinite;
  opacity:0;
}
.r1{animation-delay:0s}
.r2{animation-delay:1.3s}
.r3{animation-delay:2.6s}
@keyframes rippleOut{
  0%{width:120px;height:120px;opacity:.8}
  100%{width:360px;height:360px;opacity:0}
}

.scroll-indicator{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-dim);font-size:.78rem;letter-spacing:2px;text-transform:uppercase;opacity:.7}
.scroll-line{width:1px;height:40px;background:linear-gradient(180deg,var(--accent-1),transparent);animation:scrollLine 2s ease-in-out infinite}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* =========== ARTICLE =========== */
.article-wrapper{
  max-width:880px;margin:0 auto;padding:80px 24px 120px;position:relative;z-index:2;
}
.article-header{text-align:center;margin-bottom:56px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(255,107,53,.12);color:var(--accent-3);
  font-size:.8rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;
  border:1px solid rgba(255,107,53,.25);margin-bottom:18px;
}
.article-title{
  font-size:clamp(1.6rem,3.6vw,2.6rem);line-height:1.2;font-weight:800;letter-spacing:-.5px;margin-bottom:14px;
  background:linear-gradient(180deg,#fff,#c4d7ff);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.article-meta{color:var(--text-dim);font-size:.95rem}

.article-body p{margin-bottom:22px;font-size:1.08rem;color:var(--text-soft)}
.article-body a{
  color:var(--accent-1);font-weight:600;text-decoration:none;
  background:linear-gradient(180deg,transparent 60%,rgba(0,212,255,.2) 60%);
  padding:0 2px;border-radius:3px;
}
.article-body a:hover{background:linear-gradient(180deg,transparent 0%,rgba(0,212,255,.4) 0%);color:#fff}
.dropcap::first-letter{
  font-size:3.4rem;float:left;line-height:.9;margin:6px 10px 0 0;font-weight:800;
  background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent;
}

.h-section{
  font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:800;margin:48px 0 18px;
  padding-left:18px;border-left:4px solid var(--accent-1);
  color:#fff;letter-spacing:-.3px;
  text-shadow:0 0 24px rgba(0,212,255,.2);
}
.h-section::before{
  content:"";display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--accent-1);box-shadow:0 0 10px var(--accent-1);
  vertical-align:middle;margin-right:12px;
}
.article-body h3{font-size:1.3rem;margin:32px 0 14px;color:var(--accent-5);font-weight:700}

.callout{
  margin:48px 0;padding:32px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(0,212,255,.08),rgba(255,107,53,.08));
  border:1px solid rgba(0,212,255,.25);
  box-shadow:0 20px 50px rgba(0,0,0,.4),inset 0 0 30px rgba(0,212,255,.05);
  position:relative;overflow:hidden;
}
.callout::before{
  content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;
  background:radial-gradient(circle,rgba(0,212,255,.1) 0%,transparent 60%);
  pointer-events:none;
}
.callout h3{color:var(--accent-1);margin-bottom:10px;font-size:1.35rem}
.callout p{margin:0;position:relative;z-index:1}

.card-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:28px 0;
}
.info-card{padding:24px;border-radius:var(--radius);transition:transform .4s,box-shadow .4s;position:relative;overflow:hidden}
.info-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(135deg,transparent,rgba(0,212,255,.08),transparent);
  opacity:0;transition:opacity .4s;
}
.info-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(0,0,0,.5),0 0 30px rgba(0,212,255,.15)}
.info-card:hover::before{opacity:1}
.card-icon{font-size:2rem;margin-bottom:12px;display:inline-block;filter:drop-shadow(0 0 8px rgba(0,212,255,.4))}
.info-card h3{font-size:1.15rem;margin-bottom:8px;color:var(--accent-1)}
.info-card p{font-size:.94rem;color:var(--text-dim);margin:0}

.tip-list{list-style:none;padding:0;margin:24px 0;display:grid;gap:12px}
.tip-list li{
  padding:16px 20px 16px 56px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--glass-border);
  position:relative;font-size:1rem;
  transition:transform .25s,background .25s;
}
.tip-list li:hover{background:var(--surface-hi);transform:translateX(4px)}
.tip-list li::before{
  content:"💧";position:absolute;left:20px;top:50%;transform:translateY(-50%);
  font-size:1.2rem;
}

/* =========== FAQ =========== */
.faq-list{display:grid;gap:12px;margin-top:24px}
.faq-item{border-radius:var(--radius);overflow:hidden;transition:background .3s}
.faq-item[open]{background:rgba(0,212,255,.06)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-weight:700;font-size:1.05rem;
  display:flex;align-items:center;justify-content:space-between;gap:16px;color:#fff;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:1.8rem;color:var(--accent-1);transition:transform .3s;line-height:1;
  width:28px;height:28px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent-3)}
.faq-item p{padding:0 24px 22px;color:var(--text-dim);margin:0}

/* =========== FINAL CTA =========== */
.final-cta{margin-top:60px}
.final-cta-inner{
  padding:56px 36px;text-align:center;
  background:linear-gradient(135deg,rgba(0,212,255,.12),rgba(255,107,53,.1),rgba(91,140,255,.08));
  border:1px solid rgba(0,212,255,.25);position:relative;overflow:hidden;
}
.final-cta-inner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at top,rgba(0,212,255,.15),transparent 60%);
  pointer-events:none;
}
.final-cta h2{font-size:clamp(1.5rem,3vw,2.4rem);margin-bottom:14px;color:#fff;position:relative}
.final-cta p{color:var(--text-dim);margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto;position:relative}
.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}

/* =========== FOOTER =========== */
.site-footer{
  margin-top:100px;padding:60px 20px 30px;
  border-top:1px solid var(--glass-border);
  background:linear-gradient(180deg,transparent,rgba(0,0,0,.3));
  position:relative;
}
.footer-grid{
  max-width:1280px;margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.3rem}
.footer-logo .logo-mark{width:40px;height:40px}
.footer-tag{color:var(--text-dim);font-size:.95rem;max-width:320px}
.footer-col h4{font-size:.85rem;text-transform:uppercase;letter-spacing:2px;color:var(--accent-1);margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:var(--text-dim);font-size:.95rem}
.footer-col a:hover{color:#fff}
.socials,.social-list{display:flex;gap:10px;margin-top:4px}
.social-list{padding:0}
.social-list li{list-style:none}
.social-list a{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  background:var(--surface);border:1px solid var(--glass-border);
  transition:all .3s;color:var(--text-dim);
}
.social-list a:hover{background:var(--grad-accent);color:#fff;transform:translateY(-3px);box-shadow:0 10px 20px rgba(0,212,255,.3)}
.social-list svg{width:18px;height:18px}

.footer-bottom{
  max-width:1280px;margin:40px auto 0;padding-top:24px;
  border-top:1px solid var(--glass-border);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;
  color:var(--text-dim);font-size:.88rem;
}
.disclaimer{opacity:.6;font-style:italic}

/* =========== BACK TO TOP =========== */
.to-top{
  position:fixed;bottom:26px;right:26px;
  width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;
  background:var(--grad-accent);color:#fff;font-size:1.4rem;font-weight:900;
  box-shadow:0 10px 30px rgba(0,212,255,.4);
  opacity:0;visibility:hidden;transform:translateY(20px);
  transition:all .3s;z-index:99;
}
.to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-4px);box-shadow:0 14px 40px rgba(0,212,255,.6)}

/* =========== REVEALS =========== */
.fade-in{opacity:0;transform:translateY(20px);animation:fadeUp .9s ease forwards}
.fade-in:nth-child(2){animation-delay:.15s}
.fade-in:nth-child(3){animation-delay:.3s}
.fade-in:nth-child(4){animation-delay:.45s}
.fade-in:nth-child(5){animation-delay:.6s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s,transform .8s}
.reveal.visible{opacity:1;transform:translateY(0)}

/* =========== RESPONSIVE =========== */
@media (max-width: 960px){
  .hero-inner{grid-template-columns:1fr;gap:60px}
  .hero-visual{order:-1;max-width:320px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .main-nav a:not(.cta-btn){display:none}
  .ambient-bg .orb{opacity:.35}
  .grid-floor{opacity:.5}
}
@media (max-width: 560px){
  .hero{padding-top:110px}
  h1{font-size:2rem}
  .hero-stats{gap:22px}
  .stat .num{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .article-wrapper{padding:60px 20px 80px}
  .h-section{padding-left:14px}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .grid-floor,.orb-1,.orb-2,.orb-3,.ripple{animation:none !important;opacity:.3}
  .drop,.steam{display:none}
}