*{margin:0;padding:0;box-sizing:border-box}
:root{
  --brand:#E85D3D;
  --brand-dark:#C94A2E;
  --brand-light:#FF8A6B;
  --accent:#F2A03D;
  --accent-2:#FF6B9D;
  --bg:#FFFFFF;
  --bg-soft:#FFF7F4;
  --text:#1F2329;
  --muted:#5B6470;
  --line:#EAECEF;
  --card:#F7F8FA;
  --glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.55);
  --shadow-sm:0 4px 14px rgba(31,35,41,.06);
  --shadow-md:0 12px 32px rgba(232,93,61,.14);
  --shadow-lg:0 24px 60px rgba(232,93,61,.22);
  --radius:16px;
  --radius-sm:11px;
  --radius-lg:26px;
  --grad-hero:linear-gradient(135deg,#FFF1EB 0%,#FFFFFF 48%,#FFF6E9 100%);
  --grad-brand:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  --grad-soft:linear-gradient(135deg,rgba(232,93,61,.14),rgba(242,160,61,.14));
  --ease:cubic-bezier(.22,.61,.36,1);
}
body.dark{
  --bg:#12151A;
  --bg-soft:#181C22;
  --text:#E9ECEF;
  --muted:#9AA3AD;
  --line:#2A2F37;
  --card:#1B2027;
  --glass:rgba(24,28,34,.72);
  --glass-border:rgba(255,255,255,.08);
  --shadow-sm:0 4px 14px rgba(0,0,0,.35);
  --shadow-md:0 12px 32px rgba(0,0,0,.45);
  --shadow-lg:0 24px 60px rgba(0,0,0,.55);
  --grad-hero:linear-gradient(135deg,#26191A 0%,#12151A 52%,#1E1A14 100%);
  --grad-soft:linear-gradient(135deg,rgba(232,93,61,.22),rgba(242,160,61,.18));
}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background-color .35s var(--ease),color .35s var(--ease);
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block;height:auto}
button{font-family:inherit}
::selection{background:rgba(232,93,61,.22);color:var(--text)}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;
  font-size:14px;font-weight:600;
}
.skip-link:focus{left:0;top:0;outline:2px solid #fff;outline-offset:2px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background-color .35s var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:19px;letter-spacing:.4px;white-space:nowrap;
  transition:transform .25s var(--ease);
}
.logo:hover{transform:translateY(-1px)}
.logo .mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--grad-brand);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;
  box-shadow:0 6px 16px rgba(232,93,61,.32);
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.logo:hover .mark{box-shadow:0 10px 22px rgba(232,93,61,.45);transform:rotate(-4deg) scale(1.04)}
.main-nav{display:flex;gap:2px;margin-left:8px;flex:1;flex-wrap:nowrap}
.main-nav a{
  padding:8px 12px;border-radius:10px;font-size:15px;color:var(--muted);
  transition:color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
  white-space:nowrap;position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.main-nav a:hover,.main-nav a:focus-visible{color:var(--brand);background:var(--card);outline:none}
.main-nav a:hover::after,.main-nav a:focus-visible::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:8px}
.search-box{
  display:flex;align-items:center;gap:2px;
  background:var(--card);border:1px solid var(--line);
  border-radius:11px;padding:0 6px 0 12px;height:38px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(232,93,61,.14)}
.search-box input{
  border:none;background:transparent;outline:none;color:var(--text);
  width:130px;font-size:14px;font-family:inherit;
}
.search-box input::placeholder{color:var(--muted);opacity:.8}
.search-box button{
  border:none;background:transparent;cursor:pointer;color:var(--muted);
  font-size:15px;padding:5px;border-radius:8px;line-height:1;
  transition:color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.search-box button:hover{color:var(--brand);background:rgba(232,93,61,.1);transform:scale(1.08)}
.icon-btn{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  background:var(--card);cursor:pointer;font-size:16px;color:var(--text);
  display:flex;align-items:center;justify-content:center;line-height:1;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.icon-btn:active{transform:translateY(0) scale(.96)}
.menu-toggle{display:none}
.mobile-nav{
  display:none;border-top:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:8px 0;
  animation:slideDown .3s var(--ease);
}
.mobile-nav.open{display:block}
.mobile-nav a{
  display:block;padding:12px 20px;font-size:15px;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),background-color .2s var(--ease),padding-left .2s var(--ease);
}
.mobile-nav a:last-child{border-bottom:none}
.mobile-nav a:hover,.mobile-nav a:focus-visible{color:var(--brand);background:var(--card);padding-left:26px;outline:none}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:13.5px;color:var(--muted);padding:16px 0}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 6px;opacity:.6}
.breadcrumb strong{color:var(--text);font-weight:600}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 56px;
  background:var(--grad-hero);
  transition:background .35s var(--ease);
}
.hero::before,.hero::after{
  content:"";position:absolute;border-radius:50%;pointer-events:none;
  filter:blur(60px);opacity:.55;z-index:0;
}
.hero::before{
  width:420px;height:420px;top:-140px;right:-80px;
  background:radial-gradient(circle,rgba(232,93,61,.35),transparent 70%);
  animation:floatA 14s ease-in-out infinite;
}
.hero::after{
  width:340px;height:340px;bottom:-120px;left:-100px;
  background:radial-gradient(circle,rgba(242,160,61,.35),transparent 70%);
  animation:floatB 18s ease-in-out infinite;
}
@keyframes floatA{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-28px,26px) scale(1.08)}}
@keyframes floatB{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(24px,-22px) scale(1.1)}}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:44px;align-items:center;position:relative;z-index:1;
}
.hero h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:-.6px}
.hero h1 .hl{
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--brand);
  position:relative;
}
.hero .lead{margin-top:18px;font-size:17px;color:var(--muted);max-width:620px}
.hero .lead + .lead{margin-top:12px;font-size:15.5px}
.hero-cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  position:relative;overflow:hidden;
}
.btn::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 20%,rgba(255,255,255,.35) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .6s var(--ease);
}
.btn:hover::after{transform:translateX(120%)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(232,93,61,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(232,93,61,.42)}
.btn-ghost{background:var(--glass);color:var(--text);border-color:var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.hero-stats{display:flex;gap:32px;margin-top:36px;flex-wrap:wrap}
.stat{transition:transform .25s var(--ease)}
.stat:hover{transform:translateY(-3px)}
.stat .num{
  font-size:28px;font-weight:800;line-height:1.2;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--brand);
}
.stat .lbl{font-size:13px;color:var(--muted);margin-top:2px}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;inset:-18px;border-radius:40px;
  background:var(--grad-soft);filter:blur(30px);z-index:-1;
}
.phone-frame{
  border-radius:30px;overflow:hidden;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--line);
  background:var(--card);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
  animation:phoneFloat 6s ease-in-out infinite;
}
.phone-frame:hover{transform:translateY(-6px) scale(1.01);box-shadow:0 32px 72px rgba(232,93,61,.3)}
@keyframes phoneFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- carousel ---------- */
.carousel{
  position:relative;margin-top:48px;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .3s var(--ease);
}
.carousel:hover{box-shadow:var(--shadow-md)}
.slides{display:flex;transition:transform .55s var(--ease);will-change:transform}
.slide{
  min-width:100%;padding:44px 40px;
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
}
.slide h3{font-size:24px;margin-bottom:10px;letter-spacing:-.2px}
.slide p{color:var(--muted);max-width:520px;font-size:15.5px}
.slide .tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.5px;
  background:var(--grad-brand);color:#fff;padding:4px 12px;border-radius:20px;margin-bottom:14px;
  box-shadow:0 4px 12px rgba(232,93,61,.28);
}
.slide svg{transition:transform .45s var(--ease)}
.slide:hover svg{transform:scale(1.06) rotate(-3deg)}
.dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:2}
.dots button{
  width:9px;height:9px;border-radius:50%;border:none;
  background:var(--muted);opacity:.35;cursor:pointer;padding:0;
  transition:width .3s var(--ease),background-color .3s var(--ease),opacity .3s var(--ease);
}
.dots button:hover{opacity:.7}
.dots button.active{background:var(--brand);opacity:1;width:24px;border-radius:6px}

/* ---------- sections ---------- */
section{padding:64px 0;position:relative}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.4px;line-height:1.3}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:1.2px;margin-bottom:10px;
  padding:3px 12px;border-radius:20px;background:rgba(232,93,61,.1);
}
.alt-bg{
  background:var(--bg-soft);
  transition:background-color .35s var(--ease);
}
.alt-bg::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 12% 0%,rgba(232,93,61,.06),transparent 40%),
             radial-gradient(circle at 88% 100%,rgba(242,160,61,.07),transparent 40%);
}

/* ---------- grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}

/* ---------- cards ---------- */
.card{
  position:relative;
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease),background-color .35s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-brand);opacity:0;
  transition:opacity .28s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(232,93,61,.35);
}
.card:hover::before{opacity:1}
.card h3{font-size:18px;margin-bottom:10px;letter-spacing:-.2px}
.card h4{font-size:15px;margin:14px 0 6px;color:var(--text)}
.card h4:first-of-type{margin-top:8px}
.card p{color:var(--muted);font-size:15px}
.card p + p{margin-top:8px}
.card .ico{
  width:48px;height:48px;border-radius:13px;
  background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;font-size:22px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.card:hover .ico{transform:scale(1.08) rotate(-4deg);box-shadow:0 8px 20px rgba(232,93,61,.18)}

/* ---------- article body ---------- */
.article-body{max-width:860px;margin:0 auto;font-size:16px}
.article-body h2{
  font-size:26px;margin:38px 0 14px;padding-left:14px;
  border-left:4px solid var(--brand);line-height:1.35;
  letter-spacing:-.3px;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;margin:26px 0 10px;letter-spacing:-.2px}
.article-body h4{font-size:17px;margin:20px 0 8px}
.article-body p{margin-bottom:14px;color:var(--muted)}
.article-body ul,.article-body ol{margin:0 0 16px 22px;color:var(--muted)}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--brand)}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(232,93,61,.3);transition:border-color .2s var(--ease),color .2s var(--ease)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand)}

/* ---------- news / articles ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.news-item{
  display:flex;flex-direction:column;gap:8px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease),background-color .35s var(--ease);
  position:relative;
}
.news-item::after{
  content:"";position:absolute;right:22px;top:22px;
  width:8px;height:8px;border-radius:50%;background:var(--brand);
  opacity:0;transform:scale(.4);
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.news-item:hover{
  transform:translateY(-4px);
  border-color:rgba(232,93,61,.4);
  box-shadow:var(--shadow-md);
}
.news-item:hover::after{opacity:1;transform:scale(1)}
.news-meta{
  font-size:13px;color:var(--muted);
  display:flex;gap:12px;flex-wrap:wrap;align-items:center;
}
.news-meta span{
  padding:2px 9px;border-radius:20px;background:rgba(232,93,61,.1);
  color:var(--brand);font-weight:600;font-size:12px;
}
.news-item h3{font-size:18px;letter-spacing:-.2px;transition:color .2s var(--ease)}
.news-item:hover h3{color:var(--brand)}
.news-item p{font-size:14.5px;color:var(--muted)}
.read-more{
  color:var(--brand);font-weight:600;font-size:14px;margin-top:auto;
  display:inline-flex;align-items:center;gap:4px;
  transition:gap .2s var(--ease),color .2s var(--ease);
}
.news-item:hover .read-more{gap:8px;color:var(--brand-dark)}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);border-radius:14px;margin-bottom:12px;
  overflow:hidden;background:var(--glass);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background-color .35s var(--ease);
}
.faq-item:hover{border-color:rgba(232,93,61,.35)}
.faq-item.open{border-color:rgba(232,93,61,.45);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;text-align:left;background:transparent;border:none;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;display:flex;justify-content:space-between;gap:16px;align-items:center;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;border-radius:14px}
.faq-q .plus{
  color:var(--brand);font-size:22px;line-height:1;flex-shrink:0;
  transition:transform .3s var(--ease);
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  border-radius:50%;background:rgba(232,93,61,.1);
}
.faq-item.open .plus{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a p{padding:0 20px 18px;color:var(--muted);font-size:15px}

/* ---------- howto ---------- */
.steps{counter-reset:step;max-width:900px;margin:0 auto}
.step{
  position:relative;padding:0 0 28px 62px;
  border-left:2px solid var(--line);margin-left:22px;
  transition:border-color .3s var(--ease);
}
.step:hover{border-left-color:var(--brand)}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:-23px;top:0;width:44px;height:44px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;
  box-shadow:0 6px 16px rgba(232,93,61,.32);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.step:hover::before{transform:scale(1.08);box-shadow:0 10px 22px rgba(232,93,61,.45)}
.step h3{font-size:18px;margin-bottom:8px;letter-spacing:-.2px}
.step p{color:var(--muted);font-size:15px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.contact-list{list-style:none}
.contact-list li{
  display:flex;gap:12px;padding:14px 0;
  border-bottom:1px solid var(--line);font-size:15px;
  transition:padding-left .2s var(--ease);
}
.contact-list li:hover{padding-left:6px}
.contact-list li:last-child{border-bottom:none}
.contact-list li span:first-child{color:var(--muted);min-width:84px;flex-shrink:0}
.contact-list li span:last-child{word-break:break-word}
.map-box{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  padding:26px;
}
.map-box h3{font-size:18px;margin-bottom:12px}
.map-box h4{font-size:15px;margin:16px 0 6px;color:var(--brand)}
.map-box p{color:var(--muted);font-size:15px}
.map-box p + p{margin-top:8px}

/* ---------- author box ---------- */
.author-box{
  display:flex;gap:14px;align-items:center;
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px;margin:30px 0;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.author-box:hover{box-shadow:var(--shadow-sm);border-color:rgba(232,93,61,.3)}
.author-box .avatar{
  width:52px;height:52px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:20px;flex-shrink:0;
  box-shadow:0 6px 16px rgba(232,93,61,.3);
}
.author-box .info{font-size:14px;color:var(--muted);line-height:1.7}
.author-box .info strong{color:var(--text);font-size:15px}

/* ---------- footer ---------- */
.site-footer{
  background:#1A1E24;color:#B7BEC7;
  padding:56px 0 24px;margin-top:20px;
  position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-brand);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.3px}
.site-footer a{
  color:#B7BEC7;font-size:14px;display:block;padding:5px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.site-footer a:hover{color:var(--accent);transform:translateX(3px)}
.site-footer p{color:#B7BEC7}
.footer-bottom{
  border-top:1px solid #2E343C;margin-top:36px;padding-top:20px;
  font-size:13px;color:#8A929C;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:22px;bottom:22px;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad-brand);color:#fff;border:none;cursor:pointer;
  font-size:20px;display:none;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(232,93,61,.42);
  z-index:120;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.back-top.show{display:flex;animation:popIn .3s var(--ease)}
.back-top:hover{transform:translateY(-3px) scale(1.06);box-shadow:0 16px 34px rgba(232,93,61,.55)}
.back-top:active{transform:scale(.95)}
@keyframes popIn{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .main-nav a{padding:8px 9px;font-size:14px}
  .search-box input{width:100px}
}
@media(max-width:980px){
  .main-nav{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:30px}
  .hero-visual{max-width:360px;margin:0 auto;width:100%}
  .grid-3,.grid-4,.news-grid,.contact-grid,.footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid{gap:26px}
  section{padding:52px 0}
  .section-head h2{font-size:26px}
}
@media(max-width:760px){
  .hero{padding:44px 0 40px}
  .hero-stats{gap:22px;margin-top:28px}
  .stat .num{font-size:24px}
  .slide{grid-template-columns:1fr;padding:32px 24px;gap:16px}
  .slide svg{width:88px;height:88px}
  .carousel{margin-top:34px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .author-box{flex-direction:column;align-items:flex-start;text-align:left}
}
@media(max-width:640px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .grid-3,.grid-4,.news-grid,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px;letter-spacing:-.3px}
  .hero .lead{font-size:15.5px}
  .hero .lead + .lead{font-size:14.5px}
  .hero-cta{gap:10px}
  .btn{padding:12px 20px;font-size:14.5px;flex:1 1 auto}
  .section-head h2{font-size:23px}
  .section-head p{font-size:15px}
  .section-head{margin-bottom:30px}
  section{padding:44px 0}
  .card{padding:22px}
  .news-item{padding:20px}
  .step{padding-left:54px;margin-left:18px}
  .step::before{width:38px;height:38px;left:-20px;font-size:15px}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px}
  .back-top{right:14px;bottom:14px;width:44px;height:44px}
  .faq-q{padding:16px;font-size:15px}
  .faq-a p{padding:0 16px 16px;font-size:14.5px}
  .contact-list li{flex-direction:column;gap:4px}
  .contact-list li span:first-child{min-width:0;font-size:13px}
  .article-body ul,.article-body ol{margin-left:18px}
}
@media(max-width:400px){
  .hero h1{font-size:23px}
  .logo{font-size:17px}
  .logo .mark{width:32px;height:32px;font-size:17px}
  .hero-stats{gap:16px}
}

/* ---------- accessibility / motion ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
@media print{
  .site-header,.back-top,.hero::before,.hero::after,.dots,.site-footer{display:none !important}
  body{background:#fff;color:#000}
  .card,.news-item,.faq-item{box-shadow:none;border:1px solid #ccc;background:#fff}
}