:root{
  --primary:#4A90D9;
  --primary-dark:#2a6fb0;
  --primary-light:#7fb8e8;
  --accent:#f0932b;
  --accent2:#6c5ce7;
  --bg:#f5f8fc;
  --bg-card:#ffffff;
  --bg-elevated:#ffffff;
  --text:#2c3e50;
  --text-secondary:#3a4a5a;
  --text-muted:#7a8a9a;
  --text-faint:#98a8b8;
  --border:rgba(42,111,176,.1);
  --shadow-sm:0 3px 12px rgba(42,111,176,.06);
  --shadow-md:0 4px 18px rgba(42,111,176,.08);
  --shadow-lg:0 10px 26px rgba(42,111,176,.15);
  --glass-bg:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.45);
  --radius-sm:12px;
  --radius-md:14px;
  --radius-lg:16px;
  --radius-pill:24px;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
}

body.dark{
  --bg:#12161c;
  --bg-card:#1a212a;
  --bg-elevated:#1e252e;
  --text:#d6dde6;
  --text-secondary:#b6c2cf;
  --text-muted:#8a98a8;
  --text-faint:#6a7888;
  --border:rgba(127,184,232,.12);
  --shadow-sm:0 3px 12px rgba(0,0,0,.3);
  --shadow-md:0 4px 18px rgba(0,0,0,.3);
  --shadow-lg:0 10px 26px rgba(0,0,0,.45);
  --glass-bg:rgba(18,22,28,.78);
  --glass-border:rgba(127,184,232,.12);
}

*{
  margin:0;
  padding:0;
  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;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  transition:background var(--transition),color var(--transition);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

body.dark{
  background:var(--bg);
  color:var(--text);
}

a{
  color:var(--primary-dark);
  text-decoration:none;
  transition:color var(--transition);
}

body.dark a{
  color:var(--primary-light);
}

a:hover{
  text-decoration:underline;
  color:var(--primary);
}

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

ul,ol{
  list-style:none;
}

.container{
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}

/* ===== Header ===== */
header.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  box-shadow:0 2px 12px rgba(0,0,0,.06);
  border-bottom:1px solid var(--glass-border);
  transition:background var(--transition),box-shadow var(--transition);
}

body.dark header.site-header{
  background:var(--glass-bg);
  box-shadow:0 2px 12px rgba(0,0,0,.35);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:66px;
  gap:16px;
}

.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:20px;
  color:var(--primary-dark);
  white-space:nowrap;
  transition:transform var(--transition),opacity var(--transition);
}

body.dark .logo{
  color:var(--primary-light);
}

.logo:hover{
  transform:scale(1.03);
  text-decoration:none;
}

.logo svg{
  width:36px;
  height:36px;
  flex-shrink:0;
  transition:transform var(--transition);
}

.logo:hover svg{
  transform:rotate(-8deg) scale(1.08);
}

nav.main-nav ul{
  display:flex;
  gap:22px;
  font-size:15px;
}

nav.main-nav a{
  color:inherit;
  padding:6px 2px;
  border-bottom:2px solid transparent;
  transition:border-color var(--transition),color var(--transition);
  position:relative;
}

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

body.dark nav.main-nav a:hover{
  color:var(--primary-light);
}

.header-tools{
  display:flex;
  align-items:center;
  gap:10px;
}

.search-box{
  display:flex;
  align-items:center;
  background:var(--bg-elevated);
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  padding:5px 12px;
  transition:box-shadow var(--transition),border-color var(--transition),background var(--transition);
}

.search-box:focus-within{
  box-shadow:0 0 0 3px rgba(74,144,217,.18);
  border-color:var(--primary);
}

body.dark .search-box{
  background:var(--bg-elevated);
}

.search-box input{
  border:none;
  background:transparent;
  outline:none;
  font-size:14px;
  width:130px;
  color:inherit;
  font-family:inherit;
}

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

.search-box button{
  border:none;
  background:transparent;
  cursor:pointer;
  color:var(--primary);
  font-size:15px;
  padding:0 2px;
  transition:transform var(--transition);
  line-height:1;
}

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

.icon-btn{
  border:none;
  background:var(--bg-elevated);
  width:36px;
  height:36px;
  border-radius:50%;
  cursor:pointer;
  font-size:16px;
  color:var(--primary-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background var(--transition),transform var(--transition),box-shadow var(--transition);
  flex-shrink:0;
}

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

.icon-btn:hover{
  transform:scale(1.1);
  box-shadow:0 4px 12px rgba(74,144,217,.25);
}

.icon-btn:active{
  transform:scale(0.95);
}

.menu-toggle{
  display:none;
}

/* ===== Breadcrumb ===== */
.breadcrumb{
  font-size:13px;
  padding:14px 0;
  color:var(--text-muted);
}

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

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

/* ===== Slider ===== */
.slider-wrap{
  overflow:hidden;
  border-radius:var(--radius-lg);
  margin-bottom:30px;
  box-shadow:var(--shadow-md);
}

.slides{
  display:flex;
  transition:transform .6s cubic-bezier(0.4,0,0.2,1);
  will-change:transform;
}

.slide{
  min-width:100%;
  flex-shrink:0;
}

.slide-inner{
  padding:56px 40px;
  color:#fff;
  position:relative;
  overflow:hidden;
}

.slide-inner::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:240px;
  height:240px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  pointer-events:none;
}

.slide-inner h2{
  font-size:28px;
  margin-bottom:14px;
  line-height:1.4;
  position:relative;
  z-index:1;
}

.slide-inner p{
  opacity:.95;
  max-width:680px;
  color:rgba(255,255,255,.95);
  position:relative;
  z-index:1;
}

.s1{
  background:linear-gradient(135deg,#4A90D9 0%,#2a6fb0 100%);
}

.s2{
  background:linear-gradient(135deg,#f0932b 0%,#e17055 100%);
}

.s3{
  background:linear-gradient(135deg,#6c5ce7 0%,#4834d4 100%);
}

.slider-dots{
  display:flex;
  justify-content:center;
  gap:8px;
  margin-top:-22px;
  position:relative;
  z-index:2;
  margin-bottom:30px;
}

.slider-dots span{
  width:9px;
  height:9px;
  border-radius:50%;
  background:rgba(255,255,255,.5);
  cursor:pointer;
  transition:width var(--transition),background var(--transition),border-radius var(--transition);
}

.slider-dots span.active{
  background:#fff;
  width:22px;
  border-radius:5px;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  margin:10px 0 30px;
  background:linear-gradient(135deg,#4A90D9 0%,#2a6fb0 60%,#4834d4 120%);
  color:#fff;
  padding:56px 40px;
  box-shadow:var(--shadow-lg);
}

.hero::before{
  content:"";
  position:absolute;
  right:-80px;
  bottom:-80px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%);
  pointer-events:none;
}

.hero::after{
  content:"";
  position:absolute;
  left:-40px;
  top:-40px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%);
  pointer-events:none;
}

.hero h1{
  font-size:34px;
  line-height:1.35;
  margin-bottom:16px;
  letter-spacing:.5px;
  position:relative;
  z-index:1;
}

.hero p{
  font-size:16px;
  max-width:720px;
  opacity:.95;
  color:rgba(255,255,255,.95);
  position:relative;
  z-index:1;
}

.hero .cta{
  margin-top:22px;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}

.hero .cta a{
  background:#fff;
  color:var(--primary-dark);
  padding:11px 26px;
  border-radius:var(--radius-pill);
  font-weight:600;
  font-size:15px;
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition);
  display:inline-block;
}

.hero .cta a:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(0,0,0,.2);
  text-decoration:none;
}

.hero .cta a.ghost{
  background:transparent;
  border:1.5px solid #fff;
  color:#fff;
}

.hero .cta a.ghost:hover{
  background:rgba(255,255,255,.12);
}

/* ===== Sections ===== */
section{
  padding:34px 0;
}

h2.sec-title{
  font-size:26px;
  color:#1f3a56;
  margin-bottom:8px;
  position:relative;
  padding-left:14px;
  line-height:1.4;
}

body.dark h2.sec-title{
  color:#cfe2f5;
}

h2.sec-title::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:5px;
  border-radius:3px;
  background:linear-gradient(180deg,#4A90D9,#6c5ce7);
}

.sec-sub{
  color:var(--text-muted);
  font-size:14px;
  margin-bottom:22px;
}

h3{
  font-size:19px;
  color:var(--primary-dark);
  margin:22px 0 10px;
  line-height:1.5;
}

body.dark h3{
  color:var(--primary-light);
}

h4{
  font-size:16px;
  color:#1f3a56;
  margin:16px 0 8px;
  line-height:1.5;
}

body.dark h4{
  color:#cfe2f5;
}

p{
  margin-bottom:14px;
  font-size:15px;
  color:var(--text-secondary);
}

body.dark p{
  color:var(--text-secondary);
}

/* ===== Grid ===== */
.grid{
  display:grid;
  gap:20px;
}

.g2{
  grid-template-columns:repeat(2,1fr);
}

.g3{
  grid-template-columns:repeat(3,1fr);
}

.g4{
  grid-template-columns:repeat(4,1fr);
}

/* ===== Card ===== */
.card{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:22px;
  box-shadow:var(--shadow-md);
  border:1px solid var(--border);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
  position:relative;
  overflow:hidden;
}

.card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,#4A90D9,#6c5ce7);
  opacity:0;
  transition:opacity var(--transition);
}

.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(74,144,217,.25);
}

.card:hover::before{
  opacity:1;
}

body.dark .card{
  background:var(--bg-card);
  box-shadow:var(--shadow-md);
}

.card h3{
  margin-top:0;
}

.card h4{
  margin-top:0;
}

.card ul{
  list-style:none;
  font-size:14px;
  line-height:2;
}

.card ul a{
  color:var(--primary-dark);
  transition:color var(--transition),padding-left var(--transition);
  display:inline-block;
}

body.dark .card ul a{
  color:var(--primary-light);
}

.card ul a:hover{
  padding-left:4px;
  text-decoration:none;
}

/* ===== Stats ===== */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin:20px 0;
}

.stat{
  text-align:center;
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:24px 12px;
  box-shadow:var(--shadow-md);
  border:1px solid var(--border);
  transition:transform var(--transition),box-shadow var(--transition);
}

.stat:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
}

body.dark .stat{
  background:var(--bg-card);
}

.stat .num{
  font-size:32px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}

.stat .label{
  font-size:13px;
  color:var(--text-muted);
  margin-top:6px;
}

/* ===== Article List ===== */
.article-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}

.article-item{
  background:var(--bg-card);
  border-radius:var(--radius-sm);
  padding:20px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
  display:flex;
  flex-direction:column;
}

.article-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(74,144,217,.25);
}

body.dark .article-item{
  background:var(--bg-card);
}

.article-item .meta{
  font-size:12px;
  color:var(--text-faint);
  margin-bottom:8px;
}

.article-item h3{
  font-size:16px;
  margin:0 0 8px;
  line-height:1.5;
}

.article-item p{
  font-size:14px;
  color:var(--text-muted);
  margin-bottom:10px;
  flex:1;
}

.article-item .more{
  font-size:13px;
  color:var(--primary);
  font-weight:600;
  transition:color var(--transition),letter-spacing var(--transition);
  display:inline-block;
  align-self:flex-start;
}

.article-item .more:hover{
  color:var(--primary-dark);
  letter-spacing:.5px;
  text-decoration:none;
}

body.dark .article-item .more:hover{
  color:var(--primary-light);
}

/* ===== FAQ ===== */
.faq-item{
  background:var(--bg-card);
  border-radius:var(--radius-sm);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition:box-shadow var(--transition),border-color var(--transition);
}

.faq-item:hover{
  border-color:rgba(74,144,217,.3);
}

.faq-item.open{
  box-shadow:var(--shadow-md);
  border-color:rgba(74,144,217,.3);
}

body.dark .faq-item{
  background:var(--bg-card);
}

.faq-q{
  padding:16px 20px;
  cursor:pointer;
  font-weight:600;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:15px;
  gap:12px;
  user-select:none;
  transition:color var(--transition),background var(--transition);
  color:var(--text);
}

.faq-q:hover{
  color:var(--primary-dark);
  background:rgba(74,144,217,.04);
}

body.dark .faq-q:hover{
  color:var(--primary-light);
}

.faq-q .arrow{
  transition:transform var(--transition);
  color:var(--primary);
  font-size:12px;
  flex-shrink:0;
}

.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease,padding .4s ease;
  padding:0 20px;
}

.faq-item.open .faq-a{
  max-height:500px;
  padding:0 20px 18px;
}

.faq-item.open .arrow{
  transform:rotate(180deg);
}

.faq-a p{
  font-size:14px;
  color:var(--text-muted);
  margin:0;
  line-height:1.8;
}

/* ===== HowTo ===== */
.howto-step{
  display:flex;
  gap:16px;
  margin-bottom:18px;
  align-items:flex-start;
}

.howto-step .idx{
  flex-shrink:0;
  width:38px;
  height:38px;
  border-radius:50%;
  background:linear-gradient(135deg,#4A90D9,#6c5ce7);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  box-shadow:0 4px 12px rgba(74,144,217,.3);
  transition:transform var(--transition);
}

.howto-step:hover .idx{
  transform:scale(1.1) rotate(-5deg);
}

.howto-step .body{
  flex:1;
  padding-top:2px;
}

.howto-step .body h4{
  margin:0 0 6px;
}

.howto-step .body p{
  margin:0;
  font-size:14px;
}

/* ===== Timeline ===== */
.timeline{
  position:relative;
  padding-left:26px;
  border-left:2px solid #d6e4f2;
  margin:16px 0;
}

body.dark .timeline{
  border-left-color:#2a3a4a;
}

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

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

.timeline-item::before{
  content:"";
  position:absolute;
  left:-33px;
  top:6px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--primary);
  border:2px solid var(--bg);
  box-shadow:0 0 0 2px var(--primary);
  transition:transform var(--transition),background var(--transition);
}

.timeline-item:hover::before{
  transform:scale(1.3);
  background:var(--accent2);
  box-shadow:0 0 0 2px var(--accent2);
}

.timeline-item .year{
  font-weight:700;
  color:var(--primary-dark);
  font-size:15px;
}

body.dark .timeline-item .year{
  color:var(--primary-light);
}

.timeline-item p{
  font-size:14px;
  margin:4px 0 0;
}

/* ===== Team ===== */
.team-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}

.team-member{
  text-align:center;
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:22px 14px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition:transform var(--transition),box-shadow var(--transition);
}

.team-member:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-lg);
}

body.dark .team-member{
  background:var(--bg-card);
}

.team-member svg{
  width:70px;
  height:70px;
  border-radius:50%;
  margin:0 auto 12px;
  transition:transform var(--transition);
}

.team-member:hover svg{
  transform:scale(1.08);
}

.team-member h4{
  margin:0 0 4px;
}

.team-member p{
  font-size:13px;
  color:var(--text-muted);
  margin:0;
}

/* ===== Testimonial ===== */
.testimonial{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:22px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  position:relative;
  transition:transform var(--transition),box-shadow var(--transition);
}

.testimonial:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
}

body.dark .testimonial{
  background:var(--bg-card);
}

.testimonial::before{
  content:"\201C";
  position:absolute;
  top:6px;
  left:14px;
  font-size:44px;
  color:#cfe2f5;
  line-height:1;
  font-family:Georgia,serif;
}

body.dark .testimonial::before{
  color:#2a3a4a;
}

.testimonial p{
  font-size:14px;
  margin:14px 0 10px;
  color:var(--text-secondary);
  position:relative;
  z-index:1;
}

.testimonial .who{
  font-size:13px;
  color:var(--text-muted);
  font-weight:600;
}

/* ===== Contact ===== */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}

.contact-item{
  background:var(--bg-card);
  border-radius:var(--radius-md);
  padding:22px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
}

.contact-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(74,144,217,.3);
}

body.dark .contact-item{
  background:var(--bg-card);
}

.contact-item h4{
  margin-top:0;
}

.contact-item p{
  font-size:14px;
  margin:0;
  color:var(--text-muted);
}

/* ===== Badge ===== */
.badge{
  display:inline-block;
  background:#e8f1fb;
  color:var(--primary-dark);
  font-size:12px;
  padding:3px 10px;
  border-radius:12px;
  margin-right:6px;
  transition:background var(--transition),color var(--transition);
}

body.dark .badge{
  background:#1e2c3c;
  color:var(--primary-light);
}

/* ===== Footer ===== */
footer.site-footer{
  background:linear-gradient(180deg,#1f2d3d,#182430);
  color:#b8c5d4;
  padding:40px 0 20px;
  margin-top:40px;
  border-top:1px solid rgba(127,184,232,.1);
}

footer.site-footer a{
  color:#8fb8e0;
  transition:color var(--transition),padding-left var(--transition);
  display:inline-block;
}

footer.site-footer a:hover{
  color:#fff;
  padding-left:4px;
  text-decoration:none;
}

footer.site-footer h4{
  color:#fff;
  font-size:15px;
  margin-bottom:12px;
}

footer.site-footer p{
  color:#b8c5d4;
}

.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:30px;
  margin-bottom:26px;
}

.footer-grid ul{
  list-style:none;
  font-size:13px;
}

.footer-grid li{
  margin-bottom:8px;
}

.footer-bottom{
  border-top:1px solid #33475c;
  padding-top:18px;
  font-size:12px;
  color:#7a8a9a;
  text-align:center;
}

.footer-bottom p{
  color:#7a8a9a;
  margin-bottom:6px;
  font-size:12px;
}

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

/* ===== Back Top ===== */
.back-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;
  height:46px;
  border-radius:50%;
  background:linear-gradient(135deg,#4A90D9,#6c5ce7);
  color:#fff;
  border:none;
  cursor:pointer;
  font-size:20px;
  box-shadow:0 4px 16px rgba(74,144,217,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--transition),visibility var(--transition),transform var(--transition);
  z-index:999;
  display:flex;
  align-items:center;
  justify-content:center;
  line-height:1;
}

.back-top.show{
  opacity:1;
  visibility:visible;
}

.back-top:hover{
  transform:translateY(-4px) scale(1.08);
  box-shadow:0 8px 24px rgba(74,144,217,.55);
}

.back-top:active{
  transform:translateY(-2px) scale(0.98);
}

/* ===== Reveal Animation ===== */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .7s cubic-bezier(0.4,0,0.2,1),transform .7s cubic-bezier(0.4,0,0.2,1);
  will-change:opacity,transform;
}

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

/* ===== Focus Visible ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:4px;
}

/* ===== Selection ===== */
::selection{
  background:rgba(74,144,217,.28);
  color:inherit;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{
  width:10px;
  height:10px;
}

::-webkit-scrollbar-track{
  background:var(--bg);
}

::-webkit-scrollbar-thumb{
  background:rgba(74,144,217,.35);
  border-radius:5px;
  border:2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover{
  background:rgba(74,144,217,.6);
}

body.dark ::-webkit-scrollbar-thumb{
  background:rgba(127,184,232,.3);
  border-color:var(--bg);
}

body.dark ::-webkit-scrollbar-thumb:hover{
  background:rgba(127,184,232,.5);
}

/* ===== Responsive: Tablet ===== */
@media(max-width:960px){
  .g4,
  .stats,
  .team-grid{
    grid-template-columns:repeat(2,1fr);
  }

  .g3{
    grid-template-columns:repeat(2,1fr);
  }

  .footer-grid{
    grid-template-columns:1fr 1fr;
  }

  .contact-grid{
    grid-template-columns:1fr;
  }

  .hero{
    padding:44px 30px;
  }

  .hero h1{
    font-size:28px;
  }

  .slide-inner{
    padding:44px 30px;
  }

  .slide-inner h2{
    font-size:24px;
  }
}

/* ===== Responsive: Mobile ===== */
@media(max-width:680px){
  .g2,
  .g3,
  .g4,
  .stats,
  .team-grid,
  .article-list{
    grid-template-columns:1fr;
  }

  nav.main-nav{
    display:none;
    position:absolute;
    top:66px;
    left:0;
    right:0;
    background:var(--glass-bg);
    backdrop-filter:blur(14px) saturate(1.4);
    -webkit-backdrop-filter:blur(14px) saturate(1.4);
    flex-direction:column;
    padding:16px 20px;
    box-shadow:0 8px 20px rgba(0,0,0,.1);
    border-bottom:1px solid var(--glass-border);
  }

  body.dark nav.main-nav{
    background:var(--glass-bg);
    box-shadow:0 8px 20px rgba(0,0,0,.4);
  }

  nav.main-nav.open{
    display:flex;
  }

  nav.main-nav ul{
    flex-direction:column;
    gap:12px;
  }

  nav.main-nav a{
    display:block;
    padding:8px 0;
    border-bottom:1px solid var(--border);
  }

  nav.main-nav a:hover{
    border-bottom-color:var(--primary);
  }

  .menu-toggle{
    display:flex;
  }

  .search-box input{
    width:90px;
  }

  .header-inner{
    height:60px;
    gap:10px;
  }

  .logo{
    font-size:16px;
  }

  .logo svg{
    width:30px;
    height:30px;
  }

  nav.main-nav{
    top:60px;
  }

  .hero{
    padding:36px 22px;
    border-radius:var(--radius-sm);
  }

  .hero h1{
    font-size:24px;
  }

  .hero p{
    font-size:15px;
  }

  .hero .cta a{
    padding:10px 20px;
    font-size:14px;
  }

  .slide-inner{
    padding:36px 22px;
  }

  .slide-inner h2{
    font-size:22px;
  }

  .slide-inner p{
    font-size:14px;
  }

  .footer-grid{
    grid-template-columns:1fr;
    gap:22px;
  }

  h2.sec-title{
    font-size:22px;
  }

  h3{
    font-size:17px;
  }

  .stat .num{
    font-size:26px;
  }

  .card{
    padding:18px;
  }

  .back-top{
    right:16px;
    bottom:16px;
    width:42px;
    height:42px;
    font-size:18px;
  }

  section{
    padding:26px 0;
  }

  .container{
    padding:0 16px;
  }
}

/* ===== Reduced Motion ===== */
@media(prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }

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

/* ===== Print ===== */
@media print{
  header.site-header,
  footer.site-footer,
  .back-top,
  .slider-wrap,
  .slider-dots,
  .hero,
  .search-box,
  .icon-btn{
    display:none !important;
  }

  body{
    background:#fff;
    color:#000;
  }

  .card,
  .article-item,
  .faq-item,
  .stat{
    box-shadow:none;
    border:1px solid #ddd;
  }

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