:root{
  --primary:#1a73e8;
  --primary-dark:#155cc0;
  --primary-light:#e8f1ff;
  --primary-soft:#dbeafe;
  --accent:#ffe082;
  --accent-2:#7c4dff;
  --bg:#f7f9fc;
  --bg-glass:rgba(255,255,255,.72);
  --bg-elevated:#ffffff;
  --text:#222222;
  --text-strong:#112233;
  --text-muted:#667788;
  --text-soft:#8899aa;
  --border:#dde3ec;
  --border-soft:#eef1f6;
  --shadow-sm:0 2px 8px rgba(0,0,0,.04);
  --shadow-md:0 4px 16px rgba(0,0,0,.05);
  --shadow-lg:0 6px 20px rgba(26,115,232,.08);
  --shadow-xl:0 18px 48px rgba(26,115,232,.14);
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:16px;
  --radius-pill:24px;
  --gradient-banner:linear-gradient(135deg,#e8f1ff 0%,#f0f7ff 45%,#eef4ff 100%);
  --gradient-primary:linear-gradient(135deg,#1a73e8 0%,#4a90f7 60%,#7c4dff 100%);
  --gradient-accent:linear-gradient(135deg,#ffe082 0%,#ffb74d 100%);
  --header-h:68px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

body.dark{
  --primary:#8ab4f8;
  --primary-dark:#6fa3f0;
  --primary-light:#22344a;
  --primary-soft:#1c2838;
  --accent:#ffe082;
  --accent-2:#b388ff;
  --bg:#0f1621;
  --bg-glass:rgba(28,40,56,.72);
  --bg-elevated:#1c2838;
  --text:#d6dde8;
  --text-strong:#e8eef7;
  --text-muted:#aab6c6;
  --text-soft:#8899aa;
  --border:#22344a;
  --border-soft:#22344a;
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow-md:0 4px 16px rgba(0,0,0,.35);
  --shadow-lg:0 6px 20px rgba(0,0,0,.4);
  --shadow-xl:0 18px 48px rgba(0,0,0,.5);
  --gradient-banner:linear-gradient(135deg,#16202e 0%,#1c2838 50%,#1a2a40 100%);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

*::before,
*::after{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background-color .35s var(--ease),color .35s var(--ease);
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(720px 420px at 12% -8%,rgba(26,115,232,.10),transparent 62%),
    radial-gradient(620px 380px at 92% 4%,rgba(124,77,255,.08),transparent 60%),
    radial-gradient(560px 360px at 50% 108%,rgba(255,224,130,.10),transparent 62%);
  pointer-events:none;
}

body.dark::before{
  background:
    radial-gradient(720px 420px at 12% -8%,rgba(138,180,248,.10),transparent 62%),
    radial-gradient(620px 380px at 92% 4%,rgba(179,136,255,.08),transparent 60%),
    radial-gradient(560px 360px at 50% 108%,rgba(255,224,130,.05),transparent 62%);
}

a{
  color:var(--primary);
  text-decoration:none;
  transition:color .25s var(--ease),opacity .25s var(--ease);
}

a:hover{
  text-decoration:underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}

img,
svg{
  max-width:100%;
  height:auto;
  display:block;
}

ul{
  list-style:none;
}

::selection{
  background:rgba(26,115,232,.22);
  color:var(--text-strong);
}

/* ============ Header ============ */
header.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--bg-glass);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--border-soft);
  box-shadow:0 2px 16px rgba(0,0,0,.05);
  transition:background-color .35s var(--ease),box-shadow .35s var(--ease);
}

.header-inner{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 20px;
  gap:16px;
  flex-wrap:wrap;
  min-height:var(--header-h);
}

.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:20px;
  color:var(--primary);
  letter-spacing:.5px;
  text-decoration:none;
  transition:transform .3s var(--ease);
}

.logo:hover{
  text-decoration:none;
  transform:translateY(-1px);
}

.logo svg{
  width:36px;
  height:36px;
  border-radius:50%;
  box-shadow:0 4px 14px rgba(26,115,232,.35);
  transition:transform .5s var(--ease),box-shadow .35s var(--ease);
}

.logo:hover svg{
  transform:rotate(-8deg) scale(1.06);
  box-shadow:0 6px 20px rgba(26,115,232,.5);
}

.logo span{
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

body.dark .logo span{
  background:linear-gradient(135deg,#8ab4f8,#b388ff);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

nav.main-nav ul{
  display:flex;
  gap:22px;
  list-style:none;
  flex-wrap:wrap;
  align-items:center;
}

nav.main-nav a{
  position:relative;
  color:var(--text);
  font-size:15px;
  padding:4px 0;
  transition:color .25s var(--ease);
}

nav.main-nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--gradient-primary);
  transition:width .3s var(--ease);
}

nav.main-nav a:hover{
  color:var(--primary);
  text-decoration:none;
}

nav.main-nav a:hover::after{
  width:100%;
}

.header-tools{
  display:flex;
  align-items:center;
  gap:12px;
}

.search-box{
  display:flex;
  align-items:center;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  padding:4px 12px;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background-color .35s var(--ease);
}

.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(26,115,232,.12);
}

.search-box input{
  border:none;
  background:transparent;
  outline:none;
  font-size:14px;
  width:140px;
  color:var(--text);
  font-family:inherit;
}

.search-box input::placeholder{
  color:var(--text-soft);
}

.search-box button{
  border:none;
  background:transparent;
  cursor:pointer;
  color:var(--primary);
  font-size:14px;
  padding:2px 4px;
  transition:transform .25s var(--ease);
}

.search-box button:hover{
  transform:scale(1.15);
}

.dark-toggle{
  border:1px solid var(--border);
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-radius:var(--radius-pill);
  padding:6px 12px;
  cursor:pointer;
  font-size:13px;
  color:var(--text);
  font-family:inherit;
  white-space:nowrap;
  transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}

.dark-toggle:hover{
  border-color:var(--primary);
  color:var(--primary);
  transform:translateY(-1px);
}

.mobile-menu-btn{
  display:none;
  background:none;
  border:none;
  font-size:22px;
  cursor:pointer;
  color:var(--primary);
  padding:4px 8px;
  border-radius:8px;
  transition:background-color .25s var(--ease);
}

.mobile-menu-btn:hover{
  background:var(--primary-light);
}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:var(--gradient-banner);
  padding:64px 20px;
  overflow:hidden;
}

.hero::before{
  content:"";
  position:absolute;
  top:-140px;
  right:-120px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,224,130,.55),transparent 68%);
  filter:blur(8px);
  pointer-events:none;
}

.hero::after{
  content:"";
  position:absolute;
  bottom:-180px;
  left:-100px;
  width:380px;
  height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(26,115,232,.18),transparent 68%);
  filter:blur(10px);
  pointer-events:none;
}

.hero-inner{
  position:relative;
  z-index:1;
  max-width:1200px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:40px;
  align-items:center;
}

.hero h1{
  font-size:38px;
  line-height:1.3;
  color:var(--text-strong);
  margin-bottom:16px;
  letter-spacing:-.5px;
  animation:fadeUp .8s var(--ease) both;
}

.hero h1 span{
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

body.dark .hero h1 span{
  background:linear-gradient(135deg,#8ab4f8,#b388ff);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

.hero p.lead{
  font-size:17px;
  color:var(--text-muted);
  margin-bottom:24px;
  text-align:justify;
  animation:fadeUp .8s .1s var(--ease) both;
}

.hero-cta{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  animation:fadeUp .8s .2s var(--ease) both;
}

.btn{
  display:inline-block;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:none;
  font-family:inherit;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background-color .3s var(--ease),color .3s var(--ease);
}

.btn-primary{
  background:var(--gradient-primary);
  color:#fff;
  box-shadow:0 8px 22px rgba(26,115,232,.32);
}

.btn-primary:hover{
  color:#fff;
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(26,115,232,.42);
}

.btn-primary:active{
  transform:translateY(0);
}

.btn-ghost{
  background:var(--bg-glass);
  color:var(--primary);
  border:1px solid var(--primary);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}

.btn-ghost:hover{
  text-decoration:none;
  background:var(--primary);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(26,115,232,.28);
}

.hero-visual svg{
  width:100%;
  height:auto;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-xl);
  animation:floatY 6s ease-in-out infinite;
}

/* ============ Stats ============ */
.stats{
  max-width:1200px;
  margin:-34px auto 0;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  padding:0 20px;
  position:relative;
  z-index:2;
}

.stat-card{
  background:var(--bg-glass);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border:1px solid rgba(255,255,255,.5);
  border-radius:var(--radius-md);
  padding:22px;
  text-align:center;
  box-shadow:var(--shadow-lg);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}

body.dark .stat-card{
  border-color:rgba(138,180,248,.14);
}

.stat-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-xl);
}

.stat-num{
  font-size:30px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}

.stat-label{
  font-size:14px;
  color:var(--text-muted);
  margin-top:4px;
}

/* ============ Main layout ============ */
main{
  max-width:1200px;
  margin:0 auto;
  padding:44px 20px;
}

section{
  margin-bottom:56px;
  scroll-margin-top:90px;
}

section h2{
  position:relative;
  font-size:26px;
  color:var(--text-strong);
  margin-bottom:14px;
  padding-left:16px;
  line-height:1.4;
  letter-spacing:-.3px;
}

section h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:5px;
  border-radius:4px;
  background:var(--gradient-primary);
  box-shadow:0 2px 10px rgba(26,115,232,.35);
}

section h2 .sub{
  display:inline-block;
  font-size:14px;
  color:var(--text-soft);
  font-weight:400;
  margin-left:10px;
  vertical-align:middle;
}

section h3{
  font-size:19px;
  color:var(--primary);
  margin:24px 0 10px;
  line-height:1.5;
}

section h4{
  font-size:16px;
  color:var(--text-strong);
  margin:16px 0 8px;
}

section p{
  color:var(--text-muted);
  margin-bottom:12px;
  text-align:justify;
  text-justify:inter-ideograph;
}

.breadcrumb{
  font-size:13px;
  color:var(--text-soft);
  margin-bottom:24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
}

.breadcrumb a{
  color:var(--text-muted);
  transition:color .25s var(--ease);
}

.breadcrumb a:hover{
  color:var(--primary);
}

.breadcrumb span{
  margin:0 6px;
  color:var(--text-soft);
}

/* ============ Grids & Cards ============ */
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}

.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}

.card{
  position:relative;
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  border-radius:var(--radius-md);
  padding:24px;
  box-shadow:var(--shadow-md);
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}

.card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:var(--gradient-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s var(--ease);
}

.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-xl);
  border-color:rgba(26,115,232,.25);
}

.card:hover::before{
  transform:scaleX(1);
}

.card h3{
  margin-top:0;
  margin-bottom:10px;
  transition:color .25s var(--ease);
}

.card:hover h3{
  color:var(--primary-dark);
}

.card p{
  font-size:15px;
  margin-bottom:10px;
}

.card p:last-child{
  margin-bottom:0;
}

.tag{
  display:inline-block;
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  padding:3px 12px;
  border-radius:999px;
  margin-right:6px;
  margin-bottom:6px;
  font-weight:500;
  transition:transform .25s var(--ease),background-color .25s var(--ease);
}

.tag:hover{
  transform:translateY(-2px);
  background:var(--primary);
  color:#fff;
}

/* ============ Articles ============ */
.article-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}

.article-card{
  position:relative;
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  border-radius:var(--radius-md);
  padding:22px;
  box-shadow:var(--shadow-md);
  display:flex;
  flex-direction:column;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}

.article-card::after{
  content:"";
  position:absolute;
  right:-40px;
  bottom:-40px;
  width:120px;
  height:120px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(26,115,232,.12),transparent 70%);
  opacity:0;
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}

.article-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-xl);
  border-color:rgba(26,115,232,.25);
}

.article-card:hover::after{
  opacity:1;
  transform:scale(1.3);
}

.article-card h3{
  font-size:17px;
  margin:0 0 8px;
  color:var(--text-strong);
  line-height:1.5;
  transition:color .25s var(--ease);
}

.article-card:hover h3{
  color:var(--primary);
}

.article-meta{
  font-size:12px;
  color:var(--text-soft);
  margin-bottom:10px;
  letter-spacing:.2px;
}

.article-card p{
  font-size:14px;
  flex:1;
  margin-bottom:0;
}

.read-more{
  display:inline-block;
  align-self:flex-start;
  font-size:14px;
  font-weight:600;
  margin-top:12px;
  color:var(--primary);
  transition:transform .3s var(--ease),color .25s var(--ease);
}

.read-more:hover{
  text-decoration:none;
  transform:translateX(4px);
  color:var(--primary-dark);
}

/* ============ Brand History ============ */
.brand-history{
  position:relative;
  padding-left:26px;
  border-left:2px solid var(--primary-light);
  margin-top:8px;
}

.history-item{
  position:relative;
  margin-bottom:22px;
}

.history-item:last-child{
  margin-bottom:0;
}

.history-item::before{
  content:"";
  position:absolute;
  left:-34px;
  top:7px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--primary);
  border:2px solid var(--bg-elevated);
  box-shadow:0 0 0 2px var(--primary-light);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}

.history-item:hover::before{
  transform:scale(1.3);
  box-shadow:0 0 0 4px rgba(26,115,232,.2);
}

.history-year{
  font-weight:700;
  color:var(--primary);
  font-size:15px;
  margin-bottom:2px;
}

.history-item p{
  margin-bottom:0;
}

/* ============ FAQ ============ */
.faq-item{
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  border-radius:var(--radius-sm);
  margin-bottom:10px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.faq-item:hover{
  border-color:rgba(26,115,232,.22);
  box-shadow:var(--shadow-md);
}

.faq-item.open{
  border-color:rgba(26,115,232,.3);
  box-shadow:var(--shadow-lg);
}

.faq-q{
  position:relative;
  width:100%;
  text-align:left;
  background:none;
  border:none;
  padding:16px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--text-strong);
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  font-family:inherit;
  line-height:1.6;
  transition:color .25s var(--ease),background-color .25s var(--ease);
}

.faq-q:hover{
  color:var(--primary);
  background:rgba(26,115,232,.04);
}

.faq-q::after{
  content:"+";
  flex-shrink:0;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:400;
  color:var(--primary);
  border-radius:50%;
  background:var(--primary-light);
  transition:transform .3s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
}

.faq-item.open .faq-q::after{
  content:"−";
  transform:rotate(180deg);
  background:var(--primary);
  color:#fff;
}

.faq-a{
  padding:0 20px;
  max-height:0;
  overflow:hidden;
  transition:max-height .35s var(--ease),padding .35s var(--ease);
  font-size:15px;
  color:var(--text-muted);
}

.faq-a p{
  margin-bottom:16px;
}

.faq-item.open .faq-a{
  max-height:600px;
  padding:0 20px 16px;
}

/* ============ HowTo ============ */
.howto-step{
  display:flex;
  gap:16px;
  margin-bottom:18px;
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  border-radius:var(--radius-sm);
  padding:18px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.howto-step:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(26,115,232,.25);
}

.step-num{
  flex-shrink:0;
  width:36px;
  height:36px;
  border-radius:50%;
  background:var(--gradient-primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  box-shadow:0 4px 12px rgba(26,115,232,.3);
  transition:transform .3s var(--ease);
}

.howto-step:hover .step-num{
  transform:scale(1.1) rotate(-6deg);
}

.howto-step strong{
  display:block;
  color:var(--text-strong);
  margin-bottom:2px;
}

.howto-step p{
  margin-bottom:0;
  font-size:15px;
}

/* ============ Table ============ */
table{
  width:100%;
  border-collapse:collapse;
  background:var(--bg-elevated);
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border-soft);
}

th,
td{
  padding:12px 14px;
  text-align:left;
  font-size:14px;
  border-bottom:1px solid var(--border-soft);
}

th{
  background:var(--primary-light);
  color:var(--text-strong);
  font-weight:600;
}

tr:last-child td{
  border-bottom:none;
}

tbody tr{
  transition:background-color .25s var(--ease);
}

tbody tr:hover{
  background:rgba(26,115,232,.04);
}

/* ============ Contact ============ */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}

.contact-item{
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  border-radius:var(--radius-sm);
  padding:18px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}

.contact-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:rgba(26,115,232,.25);
}

.contact-item strong{
  display:block;
  color:var(--text-strong);
  margin-bottom:4px;
  font-size:14px;
}

/* ============ Carousel ============ */
.banner-carousel{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--bg-elevated);
  border:1px solid var(--border-soft);
  box-shadow:var(--shadow-lg);
}

.banner-slide{
  display:none;
  padding:28px;
  animation:fadeIn .5s var(--ease) both;
}

.banner-slide.active{
  display:block;
}

.banner-slide h3{
  margin-top:0;
  margin-bottom:8px;
}

.banner-slide p{
  margin-bottom:0;
}

.banner-dots{
  text-align:center;
  padding:12px;
  border-top:1px solid var(--border-soft);
}

.banner-dots button{
  width:10px;
  height:10px;
  border-radius:50%;
  border:none;
  background:var(--border);
  margin:0 4px;
  cursor:pointer;
  padding:0;
  transition:background-color .3s var(--ease),transform .3s var(--ease),width .3s var(--ease);
}

.banner-dots button:hover{
  background:var(--text-soft);
  transform:scale(1.2);
}

.banner-dots button.active{
  width:24px;
  border-radius:6px;
  background:var(--gradient-primary);
}

/* ============ Footer ============ */
.footer{
  position:relative;
  background:linear-gradient(160deg,#0f1c2e 0%,#122238 60%,#0d1826 100%);
  color:#c9d4e3;
  padding:48px 20px 24px;
  margin-top:48px;
  overflow:hidden;
}

.footer::before{
  content:"";
  position:absolute;
  top:-120px;
  right:-80px;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(26,115,232,.22),transparent 68%);
  filter:blur(6px);
  pointer-events:none;
}

.footer-inner{
  position:relative;
  z-index:1;
  max-width:1200px;
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}

.footer h4{
  color:#fff;
  font-size:15px;
  margin-bottom:14px;
  position:relative;
  padding-bottom:8px;
}

.footer h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  border-radius:2px;
  background:var(--gradient-accent);
}

.footer a{
  color:#c9d4e3;
  font-size:14px;
  display:block;
  margin-bottom:8px;
  transition:color .25s var(--ease),transform .25s var(--ease);
  width:fit-content;
}

.footer a:hover{
  color:#fff;
  text-decoration:none;
  transform:translateX(4px);
}

.footer p{
  color:#c9d4e3;
  font-size:14px;
  line-height:1.8;
}

.footer-bottom{
  position:relative;
  z-index:1;
  max-width:1200px;
  margin:28px auto 0;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:#8899aa;
  text-align:center;
}

.footer-bottom p{
  color:#8899aa;
  font-size:13px;
  margin-bottom:6px;
}

.footer-bottom a{
  display:inline;
  color:#8899aa;
  font-size:13px;
  margin:0;
}

.footer-bottom a:hover{
  color:#fff;
  transform:none;
}

/* ============ Back to top ============ */
.back-to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:48px;
  height:48px;
  border-radius:50%;
  background:var(--gradient-primary);
  color:#fff;
  border:none;
  font-size:20px;
  cursor:pointer;
  box-shadow:0 8px 22px rgba(26,115,232,.42);
  display:none;
  z-index:200;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),opacity .3s var(--ease);
}

.back-to-top.show{
  display:block;
  animation:fadeUp .4s var(--ease) both;
}

.back-to-top:hover{
  transform:translateY(-4px) scale(1.06);
  box-shadow:0 12px 30px rgba(26,115,232,.55);
}

.back-to-top:active{
  transform:translateY(0) scale(.98);
}

/* ============ Reveal animation ============ */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  will-change:opacity,transform;
}

.reveal.visible{
  opacity:1;
  transform:none;
}

/* ============ Keyframes ============ */
@keyframes fadeUp{
  from{
    opacity:0;
    transform:translateY(20px);
  }
  to{
    opacity:1;
    transform:none;
  }
}

@keyframes fadeIn{
  from{
    opacity:0;
  }
  to{
    opacity:1;
  }
}

@keyframes floatY{
  0%,100%{
    transform:translateY(0);
  }
  50%{
    transform:translateY(-12px);
  }
}

/* ============ Dark mode extra ============ */
body.dark .hero{
  background:var(--gradient-banner);
}

body.dark .hero::before{
  background:radial-gradient(circle,rgba(255,224,130,.12),transparent 68%);
}

body.dark .hero::after{
  background:radial-gradient(circle,rgba(138,180,248,.14),transparent 68%);
}

body.dark .btn-primary{
  color:#0f1621;
  box-shadow:0 8px 22px rgba(138,180,248,.28);
}

body.dark .btn-primary:hover{
  color:#0f1621;
  box-shadow:0 12px 30px rgba(138,180,248,.38);
}

body.dark .btn-ghost{
  background:var(--bg-elevated);
  color:var(--primary);
  border-color:var(--primary);
}

body.dark .btn-ghost:hover{
  background:var(--primary);
  color:#0f1621;
}

body.dark .step-num{
  color:#0f1621;
}

body.dark .faq-item.open .faq-q::after{
  color:#0f1621;
}

body.dark .tag:hover{
  color:#0f1621;
}

body.dark .back-to-top{
  color:#0f1621;
}

body.dark .footer{
  background:linear-gradient(160deg,#0a121c 0%,#0d1826 60%,#081019 100%);
}

body.dark .footer::before{
  background:radial-gradient(circle,rgba(138,180,248,.16),transparent 68%);
}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .hero h1{
    font-size:34px;
  }
  .hero-inner{
    gap:30px;
  }
  .header-inner{
    gap:12px;
  }
  nav.main-nav ul{
    gap:16px;
  }
  .search-box input{
    width:110px;
  }
}

@media (max-width:900px){
  .hero-inner{
    grid-template-columns:1fr;
    gap:32px;
  }
  .hero{
    padding:48px 20px 72px;
  }
  .hero-visual{
    order:-1;
    max-width:440px;
    margin:0 auto;
    width:100%;
  }
  .stats{
    grid-template-columns:repeat(2,1fr);
    margin-top:-44px;
  }
  .grid-2,
  .grid-3,
  .article-list,
  .contact-grid,
  .footer-inner{
    grid-template-columns:1fr;
  }
  nav.main-nav{
    display:none;
    width:100%;
    order:3;
    border-top:1px solid var(--border-soft);
    margin-top:4px;
  }
  nav.main-nav.open{
    display:block;
    animation:fadeIn .3s var(--ease) both;
  }
  nav.main-nav ul{
    flex-direction:column;
    gap:4px;
    padding:12px 0;
    align-items:stretch;
  }
  nav.main-nav a{
    display:block;
    padding:10px 12px;
    border-radius:8px;
    transition:background-color .25s var(--ease),color .25s var(--ease);
  }
  nav.main-nav a::after{
    display:none;
  }
  nav.main-nav a:hover{
    background:var(--primary-light);
  }
  .mobile-menu-btn{
    display:block;
    order:2;
  }
  .header-tools{
    order:4;
    width:100%;
    justify-content:space-between;
    padding-top:8px;
    border-top:1px solid var(--border-soft);
    margin-top:4px;
  }
  .search-box{
    flex:1;
  }
  .search-box input{
    width:100%;
  }
  .hero h1{
    font-size:28px;
  }
  .hero p.lead{
    font-size:16px;
  }
  .stats{
    gap:12px;
  }
  .stat-card{
    padding:18px 12px;
  }
  .stat-num{
    font-size:24px;
  }
  .stat-label{
    font-size:13px;
  }
  section h2{
    font-size:22px;
  }
  section h2 .sub{
    display:block;
    margin-left:0;
    margin-top:4px;
  }
  .footer{
    padding:36px 20px 20px;
  }
  .footer-inner{
    gap:24px;
  }
  .back-to-top{
    right:16px;
    bottom:16px;
    width:44px;
    height:44px;
  }
}

@media (max-width:600px){
  body{
    font-size:15px;
  }
  .header-inner{
    padding:10px 16px;
  }
  .logo{
    font-size:18px;
  }
  .logo svg{
    width:32px;
    height:32px;
  }
  .hero{
    padding:36px 16px 64px;
  }
  .hero h1{
    font-size:24px;
  }
  .hero p.lead{
    font-size:15px;
  }
  .hero-cta{
    gap:10px;
  }
  .btn{
    padding:11px 20px;
    font-size:14px;
    flex:1;
    text-align:center;
  }
  .stats{
    padding:0 16px;
    gap:10px;
  }
  .stat-num{
    font-size:22px;
  }
  main{
    padding:32px 16px;
  }
  section{
    margin-bottom:44px;
  }
  section h2{
    font-size:20px;
    padding-left:14px;
  }
  section h3{
    font-size:17px;
  }
  .card,
  .article-card,
  .contact-item{
    padding:18px;
  }
  .howto-step{
    padding:14px;
    gap:12px;
  }
  .step-num{
    width:32px;
    height:32px;
    font-size:14px;
  }
  .faq-q{
    font-size:15px;
    padding:14px 16px;
  }
  .faq-a{
    padding:0 16px;
  }
  .faq-item.open .faq-a{
    padding:0 16px 14px;
  }
  .banner-slide{
    padding:20px;
  }
  .breadcrumb{
    font-size:12px;
  }
}

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

@media print{
  header.site-header,
  .back-to-top,
  .dark-toggle,
  .search-box,
  .mobile-menu-btn,
  .hero-cta,
  .banner-dots{
    display:none !important;
  }
  body{
    background:#fff;
    color:#000;
  }
  .card,
  .article-card,
  .faq-item{
    box-shadow:none;
    border:1px solid #ddd;
  }
}