:root{
  --bg:#0b0c10;
  --surface:#12141c;
  --surface-2:#1a1d29;
  --surface-3:#232737;
  --text:#e8eaf0;
  --text-muted:#9aa0b5;
  --accent:#f5c518;
  --accent-2:#e63946;
  --accent-3:#4ecdc4;
  --border:rgba(255,255,255,.08);
  --shadow:0 20px 40px -20px rgba(0,0,0,.8);
  --radius:16px;
  --radius-sm:10px;
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
  --font-serif:"Songti SC","SimSun",serif;
  --maxw:1200px;
  --header-h:68px;
  --glass:rgba(18,20,28,.62);
  --glass-border:rgba(255,255,255,.1);
  --glow-a:rgba(245,197,24,.22);
  --glow-b:rgba(230,57,70,.18);
  --glow-c:rgba(78,205,196,.16);
}
html[data-theme="light"]{
  --bg:#f7f8fb;
  --surface:#ffffff;
  --surface-2:#f0f2f7;
  --surface-3:#e6e9f2;
  --text:#161a24;
  --text-muted:#5c6375;
  --accent:#c99a00;
  --accent-2:#c1121f;
  --accent-3:#0f8b84;
  --border:rgba(0,0,0,.08);
  --shadow:0 20px 40px -24px rgba(20,30,60,.25);
  --glass:rgba(255,255,255,.68);
  --glass-border:rgba(0,0,0,.08);
  --glow-a:rgba(201,154,0,.16);
  --glow-b:rgba(193,18,31,.12);
  --glow-c:rgba(15,139,132,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  transition:background .3s ease,color .3s ease;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{padding-left:1.2em}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.5vw,3rem)}
h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-top:2.4em}
h3{font-size:clamp(1.2rem,2.2vw,1.5rem);margin-top:1.8em}
h4{font-size:1.08rem;margin-top:1.4em}
p{margin:0 0 1.1em}
::selection{background:var(--accent);color:#0b0c10}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:min(var(--maxw),92%);margin-inline:auto}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-100px;left:16px;background:var(--accent);color:#0b0c10;padding:.6em 1em;border-radius:0 0 8px 8px;z-index:999;transition:top .2s}
.skip-link:focus{top:0}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease,background .3s ease;
}
.header-inner{display:flex;align-items:center;gap:1.2rem;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.15rem;letter-spacing:.02em;flex-shrink:0;transition:transform .25s ease}
.brand:hover{transform:translateY(-1px)}
.brand svg{width:34px;height:34px;transition:transform .4s cubic-bezier(.4,0,.2,1),filter .3s ease}
.brand:hover svg{transform:rotate(-8deg) scale(1.05);filter:drop-shadow(0 0 10px var(--glow-a))}
.brand span{color:var(--accent)}
.main-nav{display:flex;gap:.2rem;margin-left:auto;flex-wrap:wrap}
.main-nav a{
  position:relative;
  padding:.5em .8em;border-radius:8px;font-size:.94rem;color:var(--text-muted);
  transition:color .2s,background .2s;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:.8em;right:.8em;bottom:.28em;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-3));
  transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.4,0,.2,1);border-radius:2px;
}
.main-nav a:hover,.main-nav a:focus-visible{color:var(--text);background:var(--surface-2)}
.main-nav a:hover::after,.main-nav a:focus-visible::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:.5rem;margin-left:.6rem}
.icon-btn{
  background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;cursor:pointer;
  transition:background .2s,transform .15s,border-color .2s,box-shadow .25s;
}
.icon-btn:hover{background:var(--surface-3);border-color:color-mix(in srgb,var(--accent) 40%,var(--border));box-shadow:0 8px 20px -12px var(--glow-a)}
.icon-btn:active{transform:scale(.94)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.search-wrap{position:relative;display:flex;align-items:center}
.search-wrap input{
  width:0;opacity:0;padding:0;border:1px solid var(--border);
  background:var(--surface-2);color:var(--text);border-radius:10px;height:40px;
  transition:width .3s ease,opacity .2s ease,padding .3s ease;
}
.search-wrap.open input{width:180px;opacity:1;padding:0 .8em}
.search-wrap input:focus{outline:2px solid var(--accent);outline-offset:1px}
.menu-toggle{display:none}

/* ============ HERO ============ */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(3.5rem,9vw,7rem) 0 clamp(2.5rem,6vw,4rem);
  background:
    radial-gradient(1200px 500px at 15% -10%,var(--glow-a),transparent 60%),
    radial-gradient(900px 500px at 90% 10%,var(--glow-b),transparent 60%),
    radial-gradient(700px 420px at 50% 120%,var(--glow-c),transparent 65%),
    var(--bg);
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:radial-gradient(600px 320px at 70% 30%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(600px 320px at 70% 30%,#000 0%,transparent 75%);
  opacity:.6;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center;position:relative;z-index:1}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:.5em;font-size:.82rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:1.1em;
  border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);
  padding:.35em .9em;border-radius:999px;background:color-mix(in srgb,var(--accent) 10%,transparent);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.hero h1{margin-bottom:.5em}
.hero h1 .grad{
  background:linear-gradient(100deg,var(--accent),var(--accent-3) 60%,var(--accent-2));
  background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gradShift 8s ease-in-out infinite;
}
@keyframes gradShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.hero-lead{font-size:clamp(1rem,1.6vw,1.18rem);color:var(--text-muted);max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.8rem}
.btn{
  display:inline-flex;align-items:center;gap:.5em;padding:.75em 1.5em;border-radius:12px;
  font-weight:700;font-size:.95rem;cursor:pointer;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;
  font-family:inherit;position:relative;overflow:hidden;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 70%,var(--accent-3)));color:#0b0c10;box-shadow:0 12px 28px -12px color-mix(in srgb,var(--accent) 70%,transparent)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 38px -14px color-mix(in srgb,var(--accent) 85%,transparent)}
.btn-ghost{background:var(--glass);color:var(--text);border-color:var(--border);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-ghost:hover{background:var(--surface-2);border-color:color-mix(in srgb,var(--accent) 40%,var(--border));transform:translateY(-2px)}
.hero-stats{display:flex;gap:2.2rem;margin-top:2.4rem;flex-wrap:wrap}
.stat b{display:block;font-size:clamp(1.4rem,3vw,2rem);color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{font-size:.85rem;color:var(--text-muted)}

/* ============ CAROUSEL ============ */
.carousel{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--glass-border);background:var(--surface);box-shadow:var(--shadow);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .4s cubic-bezier(.4,0,.2,1),box-shadow .4s ease;
}
.carousel:hover{transform:translateY(-4px);box-shadow:0 30px 60px -26px rgba(0,0,0,.85)}
.carousel-track{display:flex;transition:transform .6s cubic-bezier(.4,0,.2,1)}
.slide{min-width:100%;position:relative}
.slide svg{width:100%;height:auto;aspect-ratio:16/10}
.slide-caption{
  position:absolute;left:0;right:0;bottom:0;padding:1.6rem 1.4rem 1.2rem;
  background:linear-gradient(to top,rgba(5,6,10,.94),rgba(5,6,10,.35) 60%,transparent);
  color:#fff;
}
.slide-caption strong{display:block;font-size:1.1rem;margin-bottom:.2em}
.slide-caption small{color:#c9cdda;font-size:.82rem}
.carousel-dots{position:absolute;bottom:14px;right:18px;display:flex;gap:8px}
.carousel-dots button{
  width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.4);cursor:pointer;padding:0;
  transition:background .2s,transform .2s,width .25s ease;
}
.carousel-dots button.active{background:var(--accent);transform:scale(1.3);box-shadow:0 0 12px var(--glow-a)}

/* ============ SECTIONS ============ */
section{padding:clamp(3rem,7vw,5.5rem) 0;border-bottom:1px solid var(--border);position:relative}
section:last-of-type{border-bottom:0}
.section-head{max-width:62ch;margin-bottom:2.4rem}
.section-head .kicker{color:var(--accent);font-weight:700;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;display:block;margin-bottom:.6em}
.section-head p{color:var(--text-muted);font-size:1.02rem}
.grid{display:grid;gap:1.4rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ============ CARDS ============ */
.card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:1.6rem;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .3s cubic-bezier(.4,0,.2,1),border-color .3s ease,box-shadow .3s ease,background .3s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(140deg,var(--glow-a),transparent 45%,var(--glow-c));
  opacity:0;transition:opacity .4s ease;
}
.card:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--accent) 40%,var(--border));box-shadow:var(--shadow)}
.card:hover::before{opacity:.5}
.card h3{margin-top:0;position:relative;z-index:1}
.card p:last-child{margin-bottom:0}
.card p,.card ul,.card ol{position:relative;z-index:1}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:1rem;
  background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--accent);
  transition:transform .3s cubic-bezier(.4,0,.2,1),background .3s ease;
}
.card:hover .card-icon{transform:translateY(-2px) scale(1.06);background:color-mix(in srgb,var(--accent) 22%,transparent)}
.card-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pill-list{display:flex;flex-wrap:wrap;gap:.6rem;list-style:none;padding:0;margin:1.2rem 0}
.pill-list li{
  background:var(--surface-2);border:1px solid var(--border);border-radius:999px;
  padding:.4em 1em;font-size:.85rem;color:var(--text-muted);
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.pill-list li:hover{color:var(--text);border-color:color-mix(in srgb,var(--accent) 45%,var(--border));transform:translateY(-2px)}

/* ============ ARTICLES ============ */
.article-card{display:flex;flex-direction:column;height:100%}
.article-thumb{border-radius:var(--radius-sm);overflow:hidden;margin-bottom:1.1rem;background:var(--surface-2);position:relative}
.article-thumb svg{width:100%;height:auto;aspect-ratio:16/9;transition:transform .5s cubic-bezier(.4,0,.2,1)}
.article-card:hover .article-thumb svg{transform:scale(1.05)}
.article-meta{font-size:.8rem;color:var(--text-muted);display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:.5rem}
.article-card h3{font-size:1.12rem;margin-bottom:.4rem}
.article-card h3 a{transition:color .2s}
.article-card h3 a:hover{color:var(--accent)}
.article-card p{color:var(--text-muted);font-size:.94rem;flex:1}
.read-more{color:var(--accent);font-weight:700;font-size:.9rem;display:inline-flex;align-items:center;gap:.35em;transition:gap .25s ease}
.read-more svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s ease}
.read-more:hover svg{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq-list{list-style:none;padding:0;margin:0;display:grid;gap:.8rem}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-sm);overflow:hidden;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:border-color .3s ease,box-shadow .3s ease,background .3s ease;
}
.faq-item:hover{border-color:color-mix(in srgb,var(--accent) 32%,var(--border))}
.faq-item.open{border-color:color-mix(in srgb,var(--accent) 45%,var(--border));box-shadow:0 14px 32px -22px var(--glow-a)}
.faq-q{
  width:100%;text-align:left;background:transparent;border:0;color:var(--text);font-family:inherit;
  font-size:1rem;font-weight:600;padding:1.1rem 1.3rem;display:flex;justify-content:space-between;
  align-items:center;gap:1rem;cursor:pointer;line-height:1.5;
  transition:background .2s ease;
}
.faq-q:hover{background:var(--surface-2)}
.faq-q .chev{flex-shrink:0;width:20px;height:20px;fill:none;stroke:var(--accent);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;transition:transform .35s cubic-bezier(.4,0,.2,1)}
.faq-item.open .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.4,0,.2,1)}
.faq-a-inner{padding:0 1.3rem 1.2rem;color:var(--text-muted);font-size:.95rem}
.faq-item.open .faq-a{max-height:560px}

/* ============ HOWTO STEPS ============ */
.steps{counter-reset:step;list-style:none;padding:0;margin:0;display:grid;gap:1.1rem}
.steps li{
  position:relative;padding:1.3rem 1.4rem 1.3rem 4.2rem;
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-sm);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .3s cubic-bezier(.4,0,.2,1),border-color .3s ease,box-shadow .3s ease;
}
.steps li:hover{transform:translateX(4px);border-color:color-mix(in srgb,var(--accent) 40%,var(--border));box-shadow:0 16px 34px -24px var(--glow-a)}
.steps li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:1.3rem;top:1.3rem;font-weight:800;color:var(--accent);font-size:1rem;
  font-variant-numeric:tabular-nums;
}
.steps li strong{display:block;margin-bottom:.3em}
.steps li p{margin-bottom:0;color:var(--text-muted);font-size:.94rem}

/* ============ TABLE ============ */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:540px}
th,td{padding:.9rem 1.1rem;text-align:left;border-bottom:1px solid var(--border)}
th{background:var(--surface-2);font-weight:700;color:var(--text)}
tr:last-child td{border-bottom:0}
td{color:var(--text-muted)}
tbody tr{transition:background .2s ease}
tbody tr:hover{background:color-mix(in srgb,var(--accent) 6%,transparent)}

/* ============ TEAM ============ */
.team-card{text-align:center}
.avatar{
  width:76px;height:76px;border-radius:50%;margin:0 auto 1rem;display:grid;place-items:center;
  font-weight:800;font-size:1.5rem;color:#0b0c10;
  transition:transform .35s cubic-bezier(.4,0,.2,1),box-shadow .35s ease;
}
.team-card:hover .avatar{transform:scale(1.08) rotate(-4deg);box-shadow:0 12px 28px -14px rgba(0,0,0,.6)}
.team-card h3{margin-bottom:.2rem;font-size:1.05rem}
.team-card .role{font-size:.84rem;color:var(--accent);font-weight:600;margin-bottom:.6rem}
.team-card p{font-size:.9rem;color:var(--text-muted);margin-bottom:0}

/* ============ CONTACT ============ */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:2rem}
.contact-list{list-style:none;padding:0;margin:0;display:grid;gap:1.1rem}
.contact-list li{display:flex;gap:1rem;align-items:flex-start;transition:transform .25s ease}
.contact-list li:hover{transform:translateX(4px)}
.contact-list svg{width:22px;height:22px;flex-shrink:0;fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-top:.2em}
.contact-list strong{display:block;font-size:.95rem}
.contact-list span{color:var(--text-muted);font-size:.92rem}
.map-box{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:1.4rem;display:grid;place-items:center;min-height:260px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:border-color .3s ease,box-shadow .3s ease;
}
.map-box:hover{border-color:color-mix(in srgb,var(--accent-3) 40%,var(--border));box-shadow:0 20px 44px -28px var(--glow-c)}

/* ============ SITEMAP ============ */
.sitemap-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.sitemap-cols h4{margin-top:0;font-size:.95rem;color:var(--accent)}
.sitemap-cols ul{list-style:none;padding:0;margin:0;display:grid;gap:.5rem}
.sitemap-cols a{color:var(--text-muted);font-size:.9rem;transition:color .2s,padding-left .25s ease}
.sitemap-cols a:hover{color:var(--accent);padding-left:4px}

/* ============ FOOTER ============ */
.site-footer{background:var(--surface);border-top:1px solid var(--border);padding:3rem 0 1.5rem;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),var(--accent-3),transparent);
  opacity:.5;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-brand p{color:var(--text-muted);font-size:.9rem;max-width:34ch}
.footer-col h4{font-size:.92rem;margin-bottom:.9rem}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.footer-col a{color:var(--text-muted);font-size:.88rem;transition:color .2s,padding-left .25s ease}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:1.4rem;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:1rem;font-size:.82rem;color:var(--text-muted);
}
.footer-bottom nav{display:flex;gap:1.2rem;flex-wrap:wrap}
.footer-bottom a{transition:color .2s}
.footer-bottom a:hover{color:var(--accent)}

/* ============ BACK TO TOP ============ */
.back-to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--accent);color:#0b0c10;border:0;cursor:pointer;display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s ease;z-index:90;
  box-shadow:0 10px 26px -10px color-mix(in srgb,var(--accent) 80%,transparent);
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 16px 34px -12px color-mix(in srgb,var(--accent) 90%,transparent)}
.back-to-top svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ============ BREADCRUMB ============ */
.breadcrumb{font-size:.84rem;color:var(--text-muted);padding:1rem 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0}
.breadcrumb li::after{content:"›";margin-left:.4rem;color:var(--text-muted)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}

/* ============ LAZY ============ */
svg[role="img"],.article-thumb svg{opacity:1;transition:opacity .5s ease}
.lazy-loaded{opacity:1}

/* ============ RESPONSIVE ============ */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .sitemap-cols{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .menu-toggle{display:grid}
  .main-nav{
    position:fixed;inset:var(--header-h) 0 auto 0;background:var(--glass);
    backdrop-filter:blur(20px) saturate(160%);-webkit-backdrop-filter:blur(20px) saturate(160%);
    flex-direction:column;padding:1rem;gap:.2rem;border-bottom:1px solid var(--border);
    transform:translateY(-130%);transition:transform .35s cubic-bezier(.4,0,.2,1);z-index:99;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:.8em 1em;font-size:1rem}
  .main-nav a::after{display:none}
  .contact-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
}
@media(max-width:640px){
  .grid-2,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .sitemap-cols{grid-template-columns:1fr}
  .hero-stats{gap:1.4rem}
  .search-wrap.open input{width:130px}
  .back-to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero h1 .grad{animation:none}
}
@media print{
  .site-header,.back-to-top,.carousel-dots,.hero-cta{display:none}
  body{background:#fff;color:#000}
}