:root{
  --brand:#1a5fb4;
  --brand-2:#26a269;
  --brand-3:#c64600;
  --brand-glow:rgba(26,95,180,.35);
  --ink:#1b1f24;
  --muted:#5a6570;
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --line:#e2e8f0;
  --card:#ffffff;
  --glass:rgba(255,255,255,.62);
  --glass-line:rgba(255,255,255,.75);
  --shadow:0 6px 24px rgba(20,40,80,.08);
  --shadow-hover:0 14px 38px rgba(20,40,80,.16);
  --radius:14px;
  --radius-lg:20px;
  --max:1180px;
  --grad-hero:linear-gradient(135deg,#eaf1fb 0%,#f7fbf8 55%,#fff6ef 100%);
  --grad-brand:linear-gradient(120deg,#1a5fb4 0%,#26a269 100%);
  --grad-accent:linear-gradient(120deg,#26a269 0%,#1a5fb4 100%);
  --speed:.28s;
}
html[data-theme="dark"]{
  --ink:#e8eef6;
  --muted:#a3b1c2;
  --bg:#0f141a;
  --bg-soft:#151c25;
  --line:#243040;
  --card:#151c25;
  --glass:rgba(21,28,37,.6);
  --glass-line:rgba(255,255,255,.08);
  --shadow:0 6px 24px rgba(0,0,0,.4);
  --shadow-hover:0 14px 38px rgba(0,0,0,.55);
  --brand-glow:rgba(46,120,210,.4);
  --grad-hero:linear-gradient(135deg,#101a26 0%,#121d18 55%,#1d1712 100%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  transition:background var(--speed) ease,color var(--speed) ease;
}
a{color:var(--brand);text-decoration:none;transition:color var(--speed) ease}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;color:var(--ink)}
h1{font-size:2rem}
h2{font-size:1.6rem;border-left:5px solid var(--brand);padding-left:.6em}
h3{font-size:1.22rem}
h4{font-size:1.05rem;color:var(--brand)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.4em}
li{margin-bottom:.25em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* 按钮 */
.btn{
  display:inline-block;
  padding:.7em 1.5em;
  border-radius:999px;
  background:var(--grad-brand);
  color:#fff;
  font-weight:600;
  border:0;
  cursor:pointer;
  box-shadow:0 6px 18px var(--brand-glow);
  transition:transform var(--speed) ease,box-shadow var(--speed) ease,filter var(--speed) ease;
}
.btn:hover{
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 12px 26px var(--brand-glow);
  filter:brightness(1.06);
}
.btn.ghost{
  background:transparent;
  color:var(--brand);
  border:1.5px solid var(--brand);
  box-shadow:none;
}
.btn.ghost:hover{background:var(--brand);color:#fff;box-shadow:0 10px 24px var(--brand-glow)}

/* 顶部导航 */
.topbar{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--line);
  transition:background var(--speed) ease,border-color var(--speed) ease;
}
.nav{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--ink)}
.logo svg{width:34px;height:34px;transition:transform var(--speed) ease}
.logo:hover svg{transform:rotate(-6deg) scale(1.06)}
.logo:hover{text-decoration:none}
.nav-links{display:flex;gap:16px;flex-wrap:wrap;margin-left:8px}
.nav-links a{color:var(--muted);font-size:.94rem;font-weight:500;position:relative;padding:4px 0}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--speed) ease;
}
.nav-links a:hover{color:var(--brand);text-decoration:none}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{
  display:flex;align-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 6px 4px 14px;
  background:var(--bg-soft);
  transition:border-color var(--speed) ease,box-shadow var(--speed) ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-glow)}
.search-box input{border:0;background:transparent;outline:none;color:var(--ink);width:130px;font-size:.9rem}
.search-box input::placeholder{color:var(--muted)}
.search-box button{
  border:0;background:var(--grad-brand);color:#fff;border-radius:999px;
  padding:5px 12px;cursor:pointer;font-size:.85rem;
  transition:filter var(--speed) ease;
}
.search-box button:hover{filter:brightness(1.08)}
.icon-btn{
  border:1px solid var(--line);
  background:var(--bg-soft);
  color:var(--ink);
  width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:1rem;
  display:grid;place-items:center;
  transition:transform var(--speed) ease,border-color var(--speed) ease,color var(--speed) ease;
}
.icon-btn:hover{transform:translateY(-2px) rotate(8deg);border-color:var(--brand);color:var(--brand)}
.menu-toggle{display:none}

/* 首屏 */
.hero{background:var(--grad-hero);position:relative;overflow:hidden}
.hero::before,
.hero::after{
  content:"";
  position:absolute;
  border-radius:50%;
  filter:blur(70px);
  opacity:.55;
  pointer-events:none;
  animation:floatBlob 14s ease-in-out infinite;
}
.hero::before{
  width:420px;height:420px;
  background:radial-gradient(circle,#1a5fb4 0%,transparent 70%);
  top:-140px;left:-120px;
}
.hero::after{
  width:360px;height:360px;
  background:radial-gradient(circle,#26a269 0%,transparent 70%);
  bottom:-160px;right:-100px;
  animation-delay:-6s;
}
@keyframes floatBlob{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(24px,-18px) scale(1.08)}
}
.hero-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:40px;
  align-items:center;
  padding:56px 0 60px;
  position:relative;
  z-index:1;
}
.hero h1{font-size:2.5rem;letter-spacing:-.5px}
.hero h1 em{
  font-style:normal;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero .lead{font-size:1.08rem;color:var(--muted)}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 24px}
.tag{
  background:var(--glass);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border:1px solid var(--glass-line);
  border-radius:999px;
  padding:.35em .9em;
  font-size:.85rem;
  color:var(--muted);
  transition:transform var(--speed) ease,border-color var(--speed) ease,color var(--speed) ease;
}
.tag:hover{transform:translateY(-2px);border-color:var(--brand);color:var(--brand)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{position:relative}
.hero-art svg{border-radius:var(--radius);box-shadow:var(--shadow)}

/* 轮播 */
.carousel{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow);
  transition:box-shadow var(--speed) ease,transform var(--speed) ease;
}
.carousel:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.slides{display:flex;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
.slide{min-width:100%;padding:26px 26px 22px}
.slide h3{margin-bottom:.3em}
.slide p{color:var(--muted);margin-bottom:0;font-size:.95rem}
.dots{display:flex;gap:8px;justify-content:center;padding:0 0 16px}
.dots button{
  width:9px;height:9px;border-radius:50%;border:0;background:#c7d2df;cursor:pointer;padding:0;
  transition:width var(--speed) ease,background var(--speed) ease;
}
.dots button:hover{background:var(--brand-2)}
.dots button.active{background:var(--brand);width:22px;border-radius:999px}

/* 通用区块 */
section{padding:56px 0}
.section-soft{background:var(--bg-soft);transition:background var(--speed) ease}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head p{color:var(--muted)}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* 卡片 */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform var(--speed) ease,box-shadow var(--speed) ease,border-color var(--speed) ease;
  position:relative;
  overflow:hidden;
}
.card::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:linear-gradient(135deg,rgba(26,95,180,.06),rgba(38,162,105,.06));
  opacity:0;
  transition:opacity var(--speed) ease;
  pointer-events:none;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(26,95,180,.35)}
.card:hover::after{opacity:1}
.card h3{margin-top:0}
.card p{color:var(--muted);font-size:.95rem}

/* 数据 */
.stat{text-align:center}
.stat .num{
  font-size:2.2rem;
  font-weight:800;
  display:block;
  line-height:1.2;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.stat .lbl{color:var(--muted);font-size:.9rem}

/* 产品图标 */
.feature-icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;
  background:var(--bg-soft);
  transition:transform var(--speed) ease,background var(--speed) ease;
}
.card:hover .feature-icon{transform:translateY(-3px) rotate(-4deg);background:rgba(26,95,180,.1)}

/* 场景 */
.scene{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--card);
  transition:transform var(--speed) ease,box-shadow var(--speed) ease,border-color var(--speed) ease;
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(38,162,105,.4)}
.scene .badge{
  flex:0 0 auto;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  background:var(--bg-soft);font-size:1.15rem;
  transition:transform var(--speed) ease;
}
.scene:hover .badge{transform:scale(1.1)}
.scene h4{margin:.1em 0 .3em}
.scene p{margin:0;font-size:.92rem;color:var(--muted)}

/* 时间线 */
.timeline{position:relative;margin:0;padding:0;list-style:none}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline li{position:relative;padding:0 0 22px 34px}
.timeline li::before{
  content:"";position:absolute;left:2px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--grad-brand);border:3px solid var(--bg);
  transition:transform var(--speed) ease;
}
.timeline li:hover::before{transform:scale(1.25)}
.timeline h4{margin:0 0 .2em}
.timeline p{margin:0;color:var(--muted);font-size:.93rem}

/* 文章卡片 */
.article-card{display:flex;flex-direction:column}
.article-card .meta{font-size:.82rem;color:var(--muted);margin-bottom:.5em}
.article-card h3{font-size:1.08rem}
.article-card .more{margin-top:auto;font-weight:600;font-size:.9rem;transition:letter-spacing var(--speed) ease}
.article-card:hover .more{letter-spacing:.5px}

/* FAQ */
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--speed) ease,box-shadow var(--speed) ease;
}
.faq-item:hover{border-color:rgba(26,95,180,.35);box-shadow:var(--shadow)}
.faq-item.open{border-color:var(--brand);box-shadow:0 8px 26px var(--brand-glow)}
.faq-q{
  width:100%;text-align:left;background:transparent;border:0;
  padding:18px 20px;font-size:1rem;font-weight:600;color:var(--ink);cursor:pointer;
  display:flex;justify-content:space-between;gap:14px;align-items:center;
  transition:color var(--speed) ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q .ic{flex:0 0 auto;transition:transform .3s ease;color:var(--brand);font-weight:800}
.faq-item.open .faq-q .ic{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 20px}
.faq-a p{margin:0 0 18px;color:var(--muted);font-size:.95rem}

/* HowTo 步骤 */
.steps{counter-reset:step;list-style:none;padding:0;margin:0}
.steps li{position:relative;padding:0 0 22px 56px;counter-increment:step}
.steps li::before{
  content:counter(step);
  position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;
  background:var(--grad-brand);color:#fff;display:grid;place-items:center;font-weight:700;
  box-shadow:0 6px 16px var(--brand-glow);
  transition:transform var(--speed) ease;
}
.steps li:hover::before{transform:scale(1.1)}
.steps h4{margin:0 0 .2em}
.steps p{margin:0;color:var(--muted);font-size:.94rem}

/* 表格 */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:box-shadow var(--speed) ease;
}
.table-wrap:hover{box-shadow:var(--shadow-hover)}
table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:560px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--bg-soft);font-weight:700;color:var(--ink)}
tbody tr{transition:background var(--speed) ease}
tbody tr:hover{background:rgba(26,95,180,.05)}
tr:last-child td{border-bottom:0}

/* 评价 */
.quote{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  position:relative;
  transition:transform var(--speed) ease,box-shadow var(--speed) ease,border-color var(--speed) ease;
}
.quote::before{
  content:"“";
  position:absolute;
  top:2px;left:16px;
  font-size:3rem;
  line-height:1;
  color:var(--brand);
  opacity:.18;
  font-family:Georgia,serif;
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(26,95,180,.35)}
.quote p{font-size:.95rem;color:var(--ink);position:relative}
.quote .who{font-size:.85rem;color:var(--muted);margin:0}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.info-list{list-style:none;padding:0;margin:0}
.info-list li{
  padding:10px 0;
  border-bottom:1px dashed var(--line);
  font-size:.95rem;
  color:var(--muted);
  transition:color var(--speed) ease;
}
.info-list li:hover{color:var(--ink)}
.info-list li strong{color:var(--ink);margin-right:8px}

/* 页脚 */
footer{
  background:linear-gradient(160deg,#0f1720 0%,#111c27 100%);
  color:#c7d2df;
  padding:48px 0 24px;
  font-size:.9rem;
}
footer a{color:#9fc2ef;transition:color var(--speed) ease}
footer a:hover{color:#fff;text-decoration:none}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot-grid h4{color:#fff;font-size:1rem;margin-bottom:.8em}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin-bottom:.5em}
.foot-grid li a{position:relative;transition:padding-left var(--speed) ease}
.foot-grid li a:hover{padding-left:6px}
.foot-bottom{
  border-top:1px solid #243040;
  margin-top:32px;
  padding-top:18px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:#8fa1b5;
  font-size:.84rem;
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:22px;bottom:22px;
  width:46px;height:46px;border-radius:50%;border:0;
  background:var(--grad-brand);
  color:#fff;font-size:1.2rem;cursor:pointer;
  box-shadow:0 8px 24px var(--brand-glow);
  opacity:0;pointer-events:none;
  transition:opacity var(--speed) ease,transform var(--speed) ease;
  z-index:90;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-4px) scale(1.06)}

/* 滚动动画 */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* 面包屑 */
.breadcrumb{font-size:.85rem;color:var(--muted);padding:16px 0 0;position:relative;z-index:1}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 6px}

/* 锚点导航 */
.anchor-nav{display:flex;gap:10px;flex-wrap:wrap;padding:16px 0 0}
.anchor-nav a{
  font-size:.85rem;
  padding:.35em .85em;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--muted);
  background:var(--card);
  transition:color var(--speed) ease,border-color var(--speed) ease,transform var(--speed) ease,box-shadow var(--speed) ease;
}
.anchor-nav a:hover{
  color:var(--brand);
  border-color:var(--brand);
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 6px 16px var(--brand-glow);
}

/* 搜索高亮 */
mark{background:#ffe58a;color:#1b1f24;border-radius:3px;padding:0 2px}
html[data-theme="dark"] mark{background:#ffd54a;color:#1b1f24}

/* 焦点可见性 */
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}

/* 响应式 */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero h1{font-size:2.1rem}
}
@media (max-width:720px){
  .nav-links{
    display:none;
    position:absolute;
    top:64px;left:0;right:0;
    background:var(--glass);
    -webkit-backdrop-filter:blur(16px) saturate(160%);
    backdrop-filter:blur(16px) saturate(160%);
    border-bottom:1px solid var(--line);
    flex-direction:column;
    padding:14px 20px;
    gap:12px;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:6px 0}
  .menu-toggle{display:grid}
  .search-box input{width:90px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .hero h1{font-size:1.9rem}
  h2{font-size:1.35rem}
  section{padding:42px 0}
  .foot-grid{grid-template-columns:1fr}
  .hero-inner{padding:36px 0 44px}
  .card{padding:20px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media (max-width:420px){
  .search-box{display:none}
  .hero-tags{gap:8px}
  .tag{font-size:.8rem}
}

/* 减少动画偏好 */
@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}
}

/* 打印 */
@media print{
  .topbar,.to-top,.hero::before,.hero::after,.carousel{display:none !important}
  body{background:#fff;color:#000}
  .card,.scene,.faq-item,.quote,.table-wrap{box-shadow:none;border-color:#ccc}
  .reveal{opacity:1;transform:none}
}