:root{
  --blue:#1a5fb4;
  --blue-dark:#12457f;
  --blue-light:#eaf2fc;
  --ink:#111827;
  --gray:#5b6472;
  --line:#e5e9f0;
  --bg-alt:#f7f9fc;
}

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

html{scroll-behavior:smooth;}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:#fff;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

a{text-decoration:none;color:inherit;}
ul{list-style:none;}
img{max-width:100%;display:block;}

.container{
  width:100%;
  max-width:1140px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s, box-shadow .25s;
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 2px 12px rgba(16,24,40,.05);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.logo{display:flex;align-items:center;gap:12px;}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  background:linear-gradient(135deg,var(--blue),#2b7de0);
  color:#fff;
  font-size:16px;
  font-weight:700;
  letter-spacing:1px;
  border-radius:10px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.logo-text strong{font-size:15px;letter-spacing:.5px;}
.logo-text small{font-size:9px;color:var(--gray);letter-spacing:.6px;}

.nav{display:flex;gap:34px;}
.nav a{
  font-size:15px;
  color:#33415c;
  position:relative;
  padding:4px 0;
  transition:color .2s;
}
.nav a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--blue);
  transition:width .25s;
}
.nav a:hover{color:var(--blue);}
.nav a:hover::after{width:100%;}

.nav-toggle{
  display:none;
  background:none;border:none;
  font-size:22px;cursor:pointer;color:var(--ink);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:150px 0 90px;
  background:linear-gradient(180deg,#fbfcfe 0%,#fff 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.13;
  z-index:0;
}
.hero .container{position:relative;z-index:1;}
.hero-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.hero-tag{
  display:inline-block;
  font-size:13px;
  color:var(--blue);
  background:var(--blue-light);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:22px;
  letter-spacing:.5px;
}
.hero h1{
  font-size:48px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.5px;
  margin-bottom:22px;
}
.hero-desc{
  font-size:16px;
  color:var(--gray);
  max-width:520px;
  margin-bottom:34px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-block;
  padding:13px 30px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  transition:all .22s;
}
.btn-primary{
  background:var(--blue);
  color:#fff;
  box-shadow:0 6px 18px rgba(26,95,180,.22);
}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);}
.btn-ghost{
  border:1px solid #cfd8e3;
  color:#33415c;
}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);}

.hero-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:30px 32px;
  box-shadow:0 18px 44px rgba(16,24,40,.07);
}
.hero-card-title{
  font-size:13px;
  color:var(--gray);
  letter-spacing:2px;
  margin-bottom:18px;
  text-transform:uppercase;
}
.flow li{
  display:flex;
  align-items:center;
  gap:14px;
  padding:11px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;
}
.flow li:last-child{border-bottom:none;}
.flow li span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;height:28px;
  flex:0 0 28px;
  background:var(--blue-light);
  color:var(--blue);
  font-size:12px;
  font-weight:700;
  border-radius:8px;
}

/* ---------- Stats ---------- */
.stats{
  background:var(--blue);
  color:#fff;
  padding:44px 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:16px;
  text-align:center;
}
.stat strong{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.2;
}
.stat em{font-size:16px;font-style:normal;font-weight:500;margin-left:2px;}
.stat span{font-size:13px;opacity:.82;}

/* ---------- Section ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{text-align:center;margin-bottom:56px;}
.section-tag{
  font-size:12px;
  letter-spacing:3px;
  color:var(--blue);
  font-weight:600;
  margin-bottom:12px;
}
.section-head h2{font-size:34px;font-weight:700;letter-spacing:-.3px;}
.section-sub{margin-top:12px;color:var(--gray);font-size:15px;}

/* ---------- Cards ---------- */
.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:34px 30px;
  transition:transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:0 16px 40px rgba(16,24,40,.08);
  border-color:#cfe0f5;
}
.card-icon{
  width:46px;height:46px;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-light);
  color:var(--blue);
  font-size:18px;
  border-radius:12px;
  margin-bottom:20px;
}
.card h3{font-size:19px;margin-bottom:12px;line-height:1.45;}
.card p{font-size:14.5px;color:var(--gray);margin-bottom:18px;}
.card-list li{
  font-size:14px;
  color:#33415c;
  padding-left:18px;
  position:relative;
  margin-bottom:8px;
}
.card-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:6px;height:6px;
  background:var(--blue);
  border-radius:2px;
}

/* ---------- Furosine bars ---------- */
.furosine{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:40px 42px;
  margin-bottom:40px;
  box-shadow:0 12px 34px rgba(16,24,40,.05);
}
.furosine-head{text-align:center;margin-bottom:36px;}
.furosine-head h3{font-size:23px;font-weight:700;margin-bottom:10px;}
.furosine-head p{font-size:14px;color:var(--gray);max-width:640px;margin:0 auto;}
.bar-list{display:flex;flex-direction:column;gap:22px;}
.bar-row{
  display:grid;
  grid-template-columns:210px 1fr 168px;
  gap:20px;
  align-items:center;
}
.bar-label{font-size:14.5px;font-weight:500;line-height:1.4;}
.bar-label small{display:block;font-size:12px;color:var(--gray);font-weight:400;margin-top:2px;}
.bar-track{height:16px;background:#eef2f7;border-radius:8px;overflow:hidden;}
.bar{height:100%;border-radius:8px;}
.bar-1{background:#c3cedd;}
.bar-2{background:#9fb2c9;}
.bar-3{background:linear-gradient(90deg,var(--blue),#2b7de0);}
.bar-value{font-size:13px;color:var(--gray);text-align:right;}
.bar-value strong{font-size:20px;color:var(--ink);margin-right:6px;}
.data-source{
  margin-top:24px;
  font-size:12.5px;
  color:#8a94a6;
  text-align:right;
  border-top:1px dashed var(--line);
  padding-top:14px;
}

/* ---------- Compare table ---------- */
.compare-wrap{margin-top:44px;}
.compare-wrap h3{font-size:22px;font-weight:700;margin-bottom:20px;}
.table-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  border-collapse:collapse;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  font-size:14px;
  min-width:720px;
}
table.compare th{
  background:#f2f6fc;
  text-align:left;
  padding:14px 18px;
  font-weight:600;
  font-size:13.5px;
  color:#33415c;
  white-space:nowrap;
}
table.compare td{
  padding:14px 18px;
  border-top:1px solid var(--line);
  color:#33415c;
  white-space:nowrap;
}
table.compare tr.hl td{
  background:var(--blue-light);
  font-weight:500;
  color:var(--blue-dark);
}

/* ---------- Principle ---------- */
.principle{
  margin-top:44px;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--blue);
  border-radius:12px;
  padding:32px 36px;
}
.principle h3{font-size:19px;margin-bottom:12px;}
.principle p{font-size:14.5px;color:var(--gray);margin-bottom:20px;}
.principle-tags{display:flex;flex-wrap:wrap;gap:10px;}
.principle-tags span{
  font-size:13px;
  background:var(--blue-light);
  color:var(--blue-dark);
  padding:7px 16px;
  border-radius:999px;
}

/* ---------- Cases ---------- */
.case-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.case{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:30px;
  transition:transform .25s, box-shadow .25s;
}
.case:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(16,24,40,.07);}
.case-year{
  font-size:26px;
  font-weight:700;
  color:var(--blue);
  margin-bottom:12px;
  letter-spacing:-.5px;
}
.case p{font-size:14.5px;color:var(--gray);}
.case-note{text-align:center;margin-top:28px;font-size:14px;color:var(--gray);}

/* ---------- Cards two ---------- */
.cards.two{grid-template-columns:repeat(2,1fr);}
.cards.two > article:only-child{grid-column:1 / -1;max-width:640px;margin:0 auto;}
.card-note{
  margin-top:16px;
  font-size:12.5px;
  color:#8a94a6;
  border-top:1px dashed var(--line);
  padding-top:12px;
  margin-bottom:0 !important;
}

/* ---------- Card with image ---------- */
.card.has-img{
  padding:0;
  overflow:hidden;
  display:flex;
  flex-direction:column;
}
.card.has-img img{
  width:100%;
  height:200px;
  object-fit:cover;
  display:block;
  transition:transform .5s ease;
}
.card.has-img:hover img{transform:scale(1.05);}
.card-body{padding:26px 28px 30px;}
.card.has-img h3{margin-bottom:10px;}

/* ---------- About gallery ---------- */
.about-gallery{
  display:grid;
  grid-template-columns:1.15fr 1fr 1fr;
  gap:16px;
  margin-bottom:52px;
}
.about-gallery img{
  width:100%;
  height:250px;
  object-fit:cover;
  border-radius:14px;
  display:block;
  transition:transform .35s ease, box-shadow .35s ease;
}
.about-gallery img:hover{
  transform:translateY(-4px);
  box-shadow:0 14px 34px rgba(16,24,40,.13);
}

/* ---------- Advantages ---------- */
.adv-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:26px;
}
.adv{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:32px;
  display:flex;
  gap:22px;
  align-items:flex-start;
}
.adv-num{
  font-size:28px;
  font-weight:700;
  color:#d9e6f7;
  line-height:1;
  flex:0 0 auto;
}
.adv h4{font-size:18px;margin-bottom:10px;}
.adv p{font-size:14.5px;color:var(--gray);}

/* ---------- About ---------- */
.about-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:56px;
  align-items:start;
}
.about-grid h2{font-size:34px;margin-bottom:22px;font-weight:700;}
.about-text{color:var(--gray);font-size:15.5px;margin-bottom:18px;}
.about-points{margin-top:26px;}
.about-points li{
  font-size:15px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  color:#33415c;
}
.about-points li:last-child{border-bottom:none;}
.about-points strong{color:var(--ink);}

.about-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 28px;
  box-shadow:0 10px 30px rgba(16,24,40,.05);
}
.panel-row{
  display:flex;
  justify-content:space-between;
  gap:20px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  font-size:14.5px;
}
.panel-row:last-child{border-bottom:none;}
.panel-row span{color:var(--gray);flex:0 0 auto;}
.panel-row strong{text-align:right;font-weight:500;}

/* ---------- Contact ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:32px;
  text-align:center;
}
.contact-card h4{
  font-size:13px;
  letter-spacing:2px;
  color:var(--blue);
  margin-bottom:12px;
}
.contact-card p{font-size:15.5px;color:#33415c;word-break:break-all;}

/* ---------- Footer ---------- */
.site-footer{
  background:#0f172a;
  color:#93a1b8;
  padding:36px 0;
}
.footer-inner{text-align:center;}
.footer-inner p{font-size:13.5px;}
.footer-sub{font-size:11px;letter-spacing:1.2px;margin-top:8px;opacity:.6;}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-inner,.about-grid{grid-template-columns:1fr;gap:38px;}
  .hero h1{font-size:38px;}
  .cards,.contact-grid{grid-template-columns:1fr;}
  .adv-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(3,1fr);gap:24px;}
  .case-grid,.cards.two{grid-template-columns:1fr;}
  .about-gallery{grid-template-columns:1fr;}
  .about-gallery img{height:210px;}
  .bar-row{grid-template-columns:1fr;gap:8px;}
  .bar-value{text-align:left;}
  .furosine{padding:28px 22px;}
  .principle{padding:24px 22px;}
  .section{padding:70px 0;}
}
@media (max-width:700px){
  .nav{
    display:none;
    position:absolute;
    top:72px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    gap:0;
    padding:8px 24px 20px;
    border-bottom:1px solid var(--line);
    box-shadow:0 12px 24px rgba(16,24,40,.08);
  }
  .nav.open{display:flex;}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line);}
  .nav a:last-child{border-bottom:none;}
  .nav-toggle{display:block;}
  .lang-switch{margin-left:12px;margin-right:8px;}
  .lang-btn{padding:4px 9px;font-size:12px;}
  .logo-text strong{font-size:13px;}
  .logo-text small{font-size:8px;}
  .hero{padding:120px 0 64px;}
  .hero h1{font-size:30px;}
  .hero-card{padding:24px;}
  .section-head h2,.about-grid h2{font-size:26px;}
  .stat strong{font-size:28px;}
  .panel-row{flex-direction:column;gap:4px;}
  .panel-row strong{text-align:left;}
}

/* ---------- Language switch (bi-lingual site) ---------- */
.lang-switch{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:18px;
  padding:3px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
}
.lang-btn{
  border:0;
  background:transparent;
  color:var(--gray);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
  padding:5px 12px;
  border-radius:999px;
  cursor:pointer;
  transition:background .2s,color .2s;
  font-family:inherit;
  line-height:1.2;
}
.lang-btn:hover{color:var(--blue);}
.lang-btn.active{
  background:var(--blue);
  color:#fff;
}
.flow li b{font-weight:400;}
@media (max-width:860px){
  .lang-switch{margin-left:auto;margin-right:10px;}
}