:root{
  --brand:#e63946;
  --brand-dark:#b02a37;
  --brand-soft:rgba(230,57,70,.1);
  --accent:#457b9d;
  --accent-dark:#2a4d63;
  --accent-2:#f4a261;
  --accent-2-dark:#e07a3e;
  --accent-3:#2a9d8f;
  --accent-3-dark:#1e6f66;
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --bg-card:#ffffff;
  --bg-glass:rgba(255,255,255,.72);
  --text:#1d2433;
  --text-soft:#5a6478;
  --border:#e6e9ef;
  --border-glass:rgba(255,255,255,.35);
  --shadow-sm:0 2px 8px rgba(20,30,60,.06);
  --shadow:0 6px 24px rgba(20,30,60,.08);
  --shadow-lg:0 12px 32px rgba(20,30,60,.12);
  --shadow-brand:0 8px 24px rgba(230,57,70,.32);
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --header-h:66px;
  --grad-hero:linear-gradient(135deg,#fff5f6 0%,#ffffff 45%,#f2f7fb 100%);
  --grad-brand:linear-gradient(135deg,#e63946 0%,#b02a37 100%);
  --grad-accent:linear-gradient(135deg,#457b9d 0%,#2a4d63 100%);
  --grad-warm:linear-gradient(135deg,#f4a261 0%,#e07a3e 100%);
  --grad-teal:linear-gradient(135deg,#2a9d8f 0%,#1e6f66 100%);
}
html[data-theme="dark"]{
  --brand:#ff6b78;
  --brand-dark:#e63946;
  --brand-soft:rgba(255,107,120,.14);
  --accent:#7fb2d6;
  --accent-dark:#457b9d;
  --accent-2:#f4a261;
  --accent-2-dark:#e07a3e;
  --accent-3:#4fc4b6;
  --accent-3-dark:#2a9d8f;
  --bg:#12151c;
  --bg-soft:#181c25;
  --bg-card:#1c212c;
  --bg-glass:rgba(28,33,44,.72);
  --text:#e8ecf3;
  --text-soft:#a3adc0;
  --border:#2a3140;
  --border-glass:rgba(255,255,255,.08);
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow:0 6px 24px rgba(0,0,0,.4);
  --shadow-lg:0 12px 32px rgba(0,0,0,.5);
  --shadow-brand:0 8px 24px rgba(255,107,120,.28);
  --grad-hero:linear-gradient(135deg,#1a1f2b 0%,#12151c 50%,#141a24 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background .35s ease,color .35s ease;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{text-decoration:underline}
button{font-family:inherit}
ul,ol{list-style:none}
::selection{background:var(--brand);color:#fff}
.container{max-width:1180px;margin:0 auto;padding:0 20px;width:100%}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:9999;
  background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;
  font-weight:600;
}
.skip-link:focus{left:0;top:0}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease,background .35s ease;
}
.site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:20px;color:var(--text);
  white-space:nowrap;letter-spacing:-.3px;
  transition:transform .25s ease;
}
.logo:hover{text-decoration:none;transform:translateY(-1px)}
.logo svg{
  width:36px;height:36px;flex-shrink:0;border-radius:10px;
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .3s;
}
.logo:hover svg{transform:rotate(-6deg) scale(1.06);box-shadow:var(--shadow-brand)}
.logo span b{color:var(--brand)}
.main-nav{display:flex;gap:2px;flex:1;flex-wrap:wrap}
.main-nav a{
  position:relative;color:var(--text-soft);font-size:15px;
  padding:8px 12px;border-radius:8px;
  transition:background .2s ease,color .2s ease;text-decoration:none;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.main-nav a:hover,.main-nav a:focus-visible{background:var(--bg-soft);color:var(--brand);text-decoration:none}
.main-nav a:hover::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-box{
  display:flex;align-items:center;
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:999px;padding:4px 6px 4px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .35s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search-box input{
  border:none;background:transparent;outline:none;color:var(--text);
  font-size:14px;width:150px;padding:6px 0;
}
.search-box input::placeholder{color:var(--text-soft);opacity:.8}
.search-box button{
  border:none;background:var(--brand);color:#fff;border-radius:999px;
  padding:6px 14px;font-size:14px;cursor:pointer;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.search-box button:hover{background:var(--brand-dark);transform:scale(1.04)}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--bg-soft);color:var(--text);cursor:pointer;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}
.icon-btn:active{transform:translateY(0) scale(.96)}
.menu-toggle{display:none}

/* ============ Hero / Banner ============ */
.hero{
  position:relative;
  background:var(--grad-hero);
  border-bottom:1px solid var(--border);
  padding:56px 0 48px;
  overflow:hidden;
  transition:background .35s ease;
}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;
  width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(230,57,70,.16) 0%,rgba(230,57,70,0) 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-180px;left:-140px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(69,123,157,.14) 0%,rgba(69,123,157,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand);
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;margin-bottom:18px;
  border:1px solid rgba(230,57,70,.16);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.hero-eyebrow svg{flex-shrink:0}
.hero h1{
  font-size:40px;line-height:1.28;font-weight:800;
  margin-bottom:18px;letter-spacing:-.8px;
}
.hero h1 em{
  color:var(--brand);font-style:normal;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent-2) 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-lead{
  color:var(--text-soft);font-size:16.5px;
  margin-bottom:26px;max-width:580px;line-height:1.85;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:12px;font-weight:600;font-size:15px;
  cursor:pointer;border:none;text-decoration:none;
  transition:transform .25s cubic-bezier(.34,1.56,.64,1),box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease;
  will-change:transform;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{box-shadow:0 12px 30px rgba(230,57,70,.42)}
.btn-ghost{
  background:var(--bg-glass);color:var(--text);
  border:1px solid var(--border);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--shadow)}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.stat b{
  display:block;font-size:28px;font-weight:800;color:var(--brand);
  line-height:1.2;letter-spacing:-.5px;
  font-variant-numeric:tabular-nums;
}
.stat span{font-size:13px;color:var(--text-soft)}

/* ============ Carousel ============ */
.carousel{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);background:var(--bg-card);
  border:1px solid var(--border);
  transition:transform .4s ease,box-shadow .4s ease;
}
.carousel:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(20,30,60,.16)}
.carousel-track{position:relative;height:330px}
.carousel-slide{
  position:absolute;inset:0;opacity:0;
  transition:opacity .7s ease,transform .7s ease;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:30px;color:#fff;transform:scale(1.02);
}
.carousel-slide.active{opacity:1;transform:scale(1);z-index:1}
.carousel-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(0,0,0,.42) 0%,rgba(0,0,0,0) 60%);
  pointer-events:none;
}
.carousel-slide h3{position:relative;z-index:1;font-size:22px;font-weight:800;margin-bottom:8px;color:#fff;letter-spacing:-.3px}
.carousel-slide p{position:relative;z-index:1;font-size:14px;opacity:.94;color:#fff;line-height:1.7}
.slide-1{background:var(--grad-brand)}
.slide-2{background:var(--grad-accent)}
.slide-3{background:var(--grad-warm)}
.slide-4{background:var(--grad-teal)}
.carousel-dots{position:absolute;bottom:16px;right:18px;display:flex;gap:8px;z-index:3}
.carousel-dots button{
  width:9px;height:9px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,.45);padding:0;
  transition:all .3s cubic-bezier(.34,1.56,.64,1);
}
.carousel-dots button:hover{background:rgba(255,255,255,.8)}
.carousel-dots button.active{background:#fff;width:24px;border-radius:5px}

/* ============ Breadcrumb ============ */
.breadcrumb{padding:16px 0;font-size:14px;color:var(--text-soft)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{content:"›";margin-right:6px;color:var(--text-soft);opacity:.6}
.breadcrumb a{color:var(--text-soft)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current]{color:var(--text);font-weight:600}

/* ============ Anchor nav ============ */
.anchor-nav{
  position:sticky;top:var(--header-h);z-index:900;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--border);
  overflow-x:auto;white-space:nowrap;
  scrollbar-width:none;-ms-overflow-style:none;
  transition:background .35s ease;
}
.anchor-nav::-webkit-scrollbar{display:none}
.anchor-nav ul{display:flex;gap:4px;padding:10px 0}
.anchor-nav a{
  display:inline-block;padding:6px 14px;border-radius:999px;
  font-size:14px;color:var(--text-soft);text-decoration:none;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.anchor-nav a:hover,.anchor-nav a.active{
  background:var(--brand-soft);color:var(--brand);
  transform:translateY(-1px);
}

/* ============ Sections ============ */
.section{padding:72px 0;position:relative}
.section.alt{background:var(--bg-soft);transition:background .35s ease}
.section-head{max-width:800px;margin-bottom:42px}
.section-head .kicker{
  display:inline-block;color:var(--brand);
  font-size:13px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;margin-bottom:12px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);
}
.section-head h2{
  font-size:32px;font-weight:800;line-height:1.35;
  margin-bottom:14px;letter-spacing:-.5px;
}
.section-head p{color:var(--text-soft);font-size:16px;line-height:1.8}

/* ============ Grid ============ */
.grid{display:grid;gap:22px}
.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(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-sm);
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s ease,border-color .35s ease,background .35s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s ease;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(230,57,70,.28);
}
.card:hover::before{transform:scaleX(1)}
.card-icon{
  width:50px;height:50px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);margin-bottom:18px;
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),background .3s ease;
}
.card:hover .card-icon{transform:scale(1.08) rotate(-4deg);background:rgba(230,57,70,.16)}
.card-icon svg{width:26px;height:26px;stroke:var(--brand);fill:none}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px;letter-spacing:-.2px}
.card p{color:var(--text-soft);font-size:14.5px;line-height:1.78}

/* ============ Prose ============ */
.prose{max-width:920px}
.prose h2{font-size:27px;font-weight:800;margin:44px 0 16px;line-height:1.4;letter-spacing:-.4px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:21px;font-weight:700;margin:32px 0 12px;line-height:1.5;letter-spacing:-.2px}
.prose h4{font-size:17px;font-weight:700;margin:24px 0 10px}
.prose p{color:var(--text-soft);margin-bottom:16px;font-size:15.5px;line-height:1.9}
.prose ul,.prose ol{margin:0 0 18px 4px;color:var(--text-soft);font-size:15.5px}
.prose ul li{position:relative;padding-left:22px;margin-bottom:9px;line-height:1.85}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.7;
}
.prose ol{list-style:decimal;margin-left:22px}
.prose ol li{margin-bottom:9px;line-height:1.85;padding-left:4px}
.prose strong{color:var(--text);font-weight:700}
.prose blockquote{
  border-left:4px solid var(--brand);
  background:var(--bg-soft);
  padding:18px 22px;border-radius:0 12px 12px 0;
  margin:22px 0;color:var(--text-soft);font-size:15px;
  transition:background .35s ease;
}

/* ============ Timeline ============ */
.timeline{position:relative;padding-left:32px;margin:24px 0 8px}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(to bottom,var(--brand),var(--accent),var(--accent-3));
  border-radius:2px;opacity:.55;
}
.timeline-item{position:relative;padding-bottom:28px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-28px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--brand);border:3px solid var(--bg);
  box-shadow:0 0 0 2px var(--brand);
  transition:transform .3s ease,box-shadow .3s ease;
}
.timeline-item:hover::before{transform:scale(1.25);box-shadow:0 0 0 4px var(--brand-soft)}
.timeline-item h4{font-size:16px;font-weight:700;margin-bottom:4px}
.timeline-item .year{
  display:inline-block;font-size:13px;color:var(--brand);font-weight:700;
  margin-bottom:6px;letter-spacing:.5px;
}
.timeline-item p{font-size:14.5px;color:var(--text-soft);line-height:1.78}

/* ============ Article cards ============ */
.article-card{
  display:flex;flex-direction:column;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm);
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s ease,border-color .35s ease,background .35s ease;
}
.article-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(230,57,70,.28);
}
.article-meta{
  display:flex;gap:12px;flex-wrap:wrap;align-items:center;
  font-size:13px;color:var(--text-soft);margin-bottom:12px;
}
.article-meta .tag{
  color:var(--brand);font-weight:700;
  background:var(--brand-soft);padding:2px 10px;border-radius:999px;
}
.article-meta time{font-variant-numeric:tabular-nums}
.article-card h3{
  font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.5;
  transition:color .2s ease;
}
.article-card:hover h3{color:var(--brand)}
.article-card p{
  color:var(--text-soft);font-size:14px;line-height:1.78;
  flex:1;margin-bottom:16px;
}
.read-more{
  display:inline-flex;align-items:center;gap:4px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:gap .25s ease;
  align-self:flex-start;
}
.read-more:hover{gap:10px;text-decoration:none}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:12px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,background .35s ease;
}
.faq-item:hover{border-color:rgba(230,57,70,.3);box-shadow:var(--shadow-sm)}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow)}
.faq-item summary{
  padding:18px 22px;font-weight:600;font-size:15.5px;cursor:pointer;
  list-style:none;display:flex;justify-content:space-between;align-items:center;
  gap:16px;color:var(--text);
  transition:color .2s ease,background .2s ease;
}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;color:var(--brand);font-weight:400;
  line-height:1;flex-shrink:0;
  transition:transform .3s cubic-bezier(.34,1.56,.64,1);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-answer{
  padding:0 22px 20px;color:var(--text-soft);
  font-size:14.5px;line-height:1.88;
  animation:fadeSlide .35s ease;
}
@keyframes fadeSlide{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:translateY(0)}
}

/* ============ HowTo ============ */
.howto-steps{display:grid;gap:18px;counter-reset:step;margin-top:24px}
.howto-step{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:12px;padding:22px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;
}
.howto-step:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow);
  border-color:rgba(230,57,70,.28);
}
.howto-step::before{
  counter-increment:step;content:counter(step);
  width:42px;height:42px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;flex-shrink:0;font-size:16px;
  box-shadow:var(--shadow-brand);
  transition:transform .3s cubic-bezier(.34,1.56,.64,1);
}
.howto-step:hover::before{transform:scale(1.1) rotate(-6deg)}
.howto-step h4{font-size:16px;font-weight:700;margin-bottom:6px}
.howto-step p{color:var(--text-soft);font-size:14.5px;line-height:1.78}

/* ============ Table ============ */
.table-wrap{
  overflow-x:auto;border-radius:12px;
  border:1px solid var(--border);background:var(--bg-card);
  box-shadow:var(--shadow-sm);
  transition:background .35s ease;
}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:580px}
caption{caption-side:top}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border)}
th{
  background:var(--bg-soft);font-weight:700;color:var(--text);
  font-size:14px;letter-spacing:.2px;
  transition:background .35s ease;
}
td{color:var(--text-soft);line-height:1.75}
tbody tr{transition:background .2s ease}
tbody tr:hover{background:var(--brand-soft)}
tr:last-child td{border-bottom:none}

/* ============ Team ============ */
.team-card{display:flex;gap:16px;align-items:flex-start}
.avatar{
  width:56px;height:56px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:20px;
  transition:transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease;
}
.card:hover .avatar{transform:scale(1.08) rotate(-6deg);box-shadow:var(--shadow)}
.avatar-1{background:var(--grad-brand)}
.avatar-2{background:var(--grad-accent)}
.avatar-3{background:var(--grad-warm)}
.avatar-4{background:var(--grad-teal)}
.team-card h4{font-size:16px;font-weight:700;margin-bottom:4px}
.team-card .role{font-size:13px;color:var(--brand);font-weight:600;margin-bottom:6px}
.team-card p{font-size:14px;color:var(--text-soft);line-height:1.72}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.contact-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px;background:var(--bg-card);
  border:1px solid var(--border);border-radius:12px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;
}
.contact-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow);
  border-color:rgba(230,57,70,.28);
}
.contact-item svg{
  width:22px;height:22px;stroke:var(--brand);fill:none;
  flex-shrink:0;margin-top:3px;
  transition:transform .3s ease;
}
.contact-item:hover svg{transform:scale(1.15)}
.contact-item b{display:block;font-size:14px;margin-bottom:3px;color:var(--text)}
.contact-item span{font-size:14px;color:var(--text-soft);line-height:1.6}

/* ============ Footer ============ */
.site-footer{
  background:var(--bg-soft);
  border-top:1px solid var(--border);
  padding:56px 0 28px;margin-top:20px;
  transition:background .35s ease;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;margin-bottom:38px;
}
.footer-brand p{
  color:var(--text-soft);font-size:14px;line-height:1.82;
  margin-top:14px;max-width:320px;
}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  color:var(--text-soft);font-size:14px;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(3px);text-decoration:none}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-soft);line-height:1.8;
}
.footer-bottom a{color:var(--text-soft)}
.footer-bottom a:hover{color:var(--brand)}
.footer-bottom>div{flex:1;min-width:240px}

/* ============ Back to top ============ */
.back-top{
  position:fixed;right:22px;bottom:22px;z-index:999;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad-brand);color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-brand);
  opacity:0;visibility:hidden;transform:translateY(16px) scale(.9);
  transition:opacity .3s ease,visibility .3s ease,transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s ease;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.back-top:hover{transform:translateY(-3px) scale(1.06);box-shadow:0 12px 30px rgba(230,57,70,.5)}
.back-top:active{transform:translateY(0) scale(.95)}

/* ============ Reveal animation ============ */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);
  will-change:opacity,transform;
}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Stagger children */
.grid>.reveal:nth-child(1){transition-delay:0s}
.grid>.reveal:nth-child(2){transition-delay:.06s}
.grid>.reveal:nth-child(3){transition-delay:.12s}
.grid>.reveal:nth-child(4){transition-delay:.18s}
.grid>.reveal:nth-child(5){transition-delay:.24s}
.grid>.reveal:nth-child(6){transition-delay:.3s}

/* ============ Focus visibility ============ */
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ Responsive: 1024 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .hero-lead{max-width:100%}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
  .footer-grid .footer-col:last-child{grid-column:auto}
}

/* ============ Responsive: 980 ============ */
@media (max-width:980px){
  .search-box{display:none}
  .section{padding:56px 0}
  .section-head h2{font-size:27px}
  .carousel-track{height:300px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-stats{gap:28px}
}

/* ============ Responsive: 720 ============ */
@media (max-width:720px){
  :root{--header-h:60px}
  .main-nav{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;
    background:var(--bg-glass);
    -webkit-backdrop-filter:blur(20px) saturate(180%);
    backdrop-filter:blur(20px) saturate(180%);
    border-bottom:1px solid var(--border);
    flex-direction:column;padding:12px;gap:4px;
    box-shadow:var(--shadow-lg);
    animation:navDrop .3s ease;
  }
  @keyframes navDrop{
    from{opacity:0;transform:translateY(-8px)}
    to{opacity:1;transform:translateY(0)}
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;font-size:15px}
  .main-nav a::after{display:none}
  .menu-toggle{display:flex}
  .anchor-nav{top:var(--header-h)}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero{padding:40px 0 36px}
  .hero h1{font-size:27px;letter-spacing:-.4px}
  .hero-lead{font-size:15.5px}
  .hero-stats{gap:22px}
  .stat b{font-size:23px}
  .hero-actions{gap:10px}
  .btn{padding:11px 20px;font-size:14.5px;flex:1;min-width:140px}
  .section{padding:44px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:23px}
  .section-head p{font-size:15px}
  .prose h2{font-size:22px}
  .prose h3{font-size:18px}
  .prose p,.prose ul,.prose ol{font-size:15px}
  .card{padding:22px}
  .article-card{padding:20px}
  .carousel-track{height:250px}
  .carousel-slide{padding:22px}
  .carousel-slide h3{font-size:18px}
  .carousel-slide p{font-size:13px}
  .timeline{padding-left:26px}
  .timeline-item::before{left:-24px;width:12px;height:12px}
  .howto-step{padding:18px;gap:14px}
  .howto-step::before{width:36px;height:36px;font-size:14px}
  .contact-item{padding:16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:10px}
  .footer-bottom>div{min-width:0}
  .back-top{right:16px;bottom:16px;width:44px;height:44px}
  .breadcrumb{font-size:13px}
}

/* ============ Responsive: 420 ============ */
@media (max-width:420px){
  .container{padding:0 16px}
  .hero h1{font-size:24px}
  .logo{font-size:18px}
  .logo svg{width:32px;height:32px}
  .hero-stats{gap:18px}
  .stat b{font-size:21px}
  .stat span{font-size:12px}
  .btn{min-width:100%;flex:1 1 100%}
  .carousel-track{height:230px}
  .section-head h2{font-size:21px}
  .faq-item summary{padding:16px 18px;font-size:14.5px}
  .faq-item .faq-answer{padding:0 18px 18px}
}

/* ============ Dark mode refinements ============ */
html[data-theme="dark"] .hero-eyebrow{border-color:rgba(255,107,120,.24)}
html[data-theme="dark"] .card:hover{border-color:rgba(255,107,120,.34)}
html[data-theme="dark"] .article-card:hover{border-color:rgba(255,107,120,.34)}
html[data-theme="dark"] .faq-item:hover{border-color:rgba(255,107,120,.34)}
html[data-theme="dark"] .contact-item:hover{border-color:rgba(255,107,120,.34)}
html[data-theme="dark"] .howto-step:hover{border-color:rgba(255,107,120,.34)}
html[data-theme="dark"] .search-box input{color:var(--text)}
html[data-theme="dark"] .carousel-slide::after{background:linear-gradient(to top,rgba(0,0,0,.55) 0%,rgba(0,0,0,0) 60%)}

/* ============ Print ============ */
@media print{
  .site-header,.anchor-nav,.back-top,.hero-actions,.carousel,.search-box,.menu-toggle{display:none!important}
  body{background:#fff;color:#000}
  .section{padding:20px 0}
  .card,.article-card,.faq-item{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
  a{color:#000;text-decoration:underline}
}