:root{
  --bg:#F2EFE8;
  --bg-soft:#E7E3DA;
  --paper:#FBFAF6;
  --ink:#141414;
  --ink-soft:#333333;
  --muted:#7A7670;
  --line:#141414;
  --line-soft:#C8C3B8;
  --shadow:0 12px 36px rgba(20,20,20,0.10);
  --shadow-soft:0 4px 14px rgba(20,20,20,0.06);
  --radius:2px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.serif{font-family:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;}
.container{max-width:1200px;margin:0 auto;padding:0 28px;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}

/* Film strip decoration */
.film-strip{
  height:22px;
  background:#141414;
  background-image:radial-gradient(circle, #F2EFE8 4px, transparent 5px);
  background-size:36px 22px;
  background-repeat:repeat-x;
  background-position:center;
  position:relative;
}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(242,239,232,0.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-logo{height:38px;width:auto;}
.brand-name{font-family:'Noto Serif SC',serif;font-size:20px;font-weight:700;letter-spacing:2px;color:var(--ink);}
.nav-wrap{display:flex;align-items:center;gap:6px;}
.nav-link{
  padding:8px 14px;font-size:14px;color:var(--ink-soft);
  border-radius:var(--radius);transition:all .25s ease;
  position:relative;
}
.nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:4px;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-cta{
  background:var(--ink);color:#fff;padding:9px 18px;font-size:13px;letter-spacing:1px;
  border:1px solid var(--ink);transition:all .25s ease;
}
.nav-cta:hover{background:transparent;color:var(--ink);}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.3s;}

/* Hero */
.hero{
  position:relative;
  padding:80px 0 70px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(242,239,232,1) 0%, rgba(231,227,218,0.6) 100%);
  overflow:hidden;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(20,20,20,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,20,20,0.04) 1px, transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  mask-image:linear-gradient(180deg, transparent, #000 20%, #000 80%, transparent);
}
.hero-inner{position:relative;text-align:center;max-width:880px;margin:0 auto;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:4px;color:var(--muted);
  margin-bottom:24px;text-transform:uppercase;
}
.eyebrow::before,.eyebrow::after{content:'';width:36px;height:1px;background:var(--muted);}
.hero h1{
  font-family:'Noto Serif SC',serif;
  font-size:clamp(32px,5vw,56px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:2px;
  color:var(--ink);
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--ink);position:relative;display:inline-block;}
.hero h1 em::after{
  content:'';position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:rgba(20,20,20,0.10);z-index:-1;
}
.hero-sub{
  font-size:17px;color:var(--ink-soft);max-width:680px;margin:0 auto 36px;
  line-height:1.8;
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:48px;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 30px;font-size:14px;letter-spacing:1px;
  border:1px solid var(--ink);transition:all .3s ease;cursor:pointer;
  background:transparent;color:var(--ink);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:#000;transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.hero-meta{
  display:flex;justify-content:center;gap:48px;flex-wrap:wrap;
  padding-top:32px;border-top:1px dashed var(--line-soft);
}
.hero-meta-item{text-align:center;}
.hero-meta-num{font-family:'Noto Serif SC',serif;font-size:30px;font-weight:700;color:var(--ink);line-height:1;}
.hero-meta-label{font-size:12px;color:var(--muted);letter-spacing:2px;margin-top:8px;}

/* Section common */
.section{padding:80px 0;border-bottom:1px solid var(--line-soft);}
.section-head{text-align:center;margin-bottom:56px;}
.section-tag{
  display:inline-block;font-size:12px;letter-spacing:4px;color:var(--muted);
  padding:4px 12px;border:1px solid var(--line-soft);margin-bottom:18px;
}
.section-title{
  font-family:'Noto Serif SC',serif;
  font-size:clamp(26px,3.5vw,38px);
  font-weight:700;letter-spacing:2px;color:var(--ink);
  margin-bottom:16px;line-height:1.3;
}
.section-desc{font-size:15px;color:var(--muted);max-width:680px;margin:0 auto;line-height:1.8;}

/* Stats */
.stats{padding:60px 0;background:#141414;color:#F2EFE8;}
.stats .section-tag{color:#9a9690;border-color:#3a3a3a;}
.stats .section-title{color:#F2EFE8;}
.stats .section-desc{color:#a8a4a0;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;
}
.stat-card{
  border:1px solid #2a2a2a;padding:28px 24px;
  background:linear-gradient(180deg,#1a1a1a,#161616);
  text-align:left;position:relative;
}
.stat-card::before{
  content:'';position:absolute;top:14px;right:14px;width:8px;height:8px;background:#F2EFE8;border-radius:50%;
}
.stat-num{font-family:'Noto Serif SC',serif;font-size:38px;font-weight:700;color:#F2EFE8;line-height:1;}
.stat-label{font-size:13px;color:#a8a4a0;margin-top:10px;letter-spacing:1px;}
.stat-desc{font-size:12px;color:#7a7670;margin-top:8px;line-height:1.6;}

/* About */
.about-grid{
  display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:start;
}
.about-lead{
  font-family:'Noto Serif SC',serif;
  font-size:22px;line-height:1.7;color:var(--ink);margin-bottom:24px;
}
.about-text{font-size:15px;color:var(--ink-soft);line-height:1.9;margin-bottom:18px;}
.about-quote{
  border-left:3px solid var(--ink);padding:8px 0 8px 20px;
  font-family:'Noto Serif SC',serif;font-size:16px;color:var(--ink);
  margin:24px 0;
}
.about-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.about-card{
  background:var(--paper);border:1px solid var(--line);
  padding:24px;transition:all .3s ease;
}
.about-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.about-card-icon{
  width:36px;height:36px;border:1px solid var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:'Noto Serif SC',serif;font-weight:700;margin-bottom:14px;
}
.about-card h3{font-size:15px;font-weight:600;margin-bottom:8px;letter-spacing:1px;}
.about-card p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Services */
.services-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.service-card{
  background:var(--paper);border:1px solid var(--line);
  padding:32px 28px;position:relative;transition:all .35s ease;
  display:flex;flex-direction:column;
}
.service-card::before{
  content:'';position:absolute;top:0;left:0;width:100%;height:3px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.service-card:hover::before{transform:scaleX(1);}
.service-num{
  font-family:'Noto Serif SC',serif;font-size:13px;color:var(--muted);
  letter-spacing:2px;margin-bottom:18px;
}
.service-card h3{
  font-size:19px;font-weight:700;margin-bottom:12px;
  font-family:'Noto Serif SC',serif;letter-spacing:1px;
}
.service-card p{font-size:14px;color:var(--ink-soft);line-height:1.8;margin-bottom:18px;flex:1;}
.service-tags{display:flex;flex-wrap:wrap;gap:8px;}
.service-tag{
  font-size:12px;color:var(--ink);border:1px solid var(--line-soft);
  padding:3px 10px;letter-spacing:1px;
}
.platform-band{
  margin-top:48px;background:var(--paper);border:1px solid var(--line);padding:32px;
}
.platform-band h3{
  font-family:'Noto Serif SC',serif;font-size:18px;letter-spacing:2px;
  margin-bottom:20px;text-align:center;
}
.platform-list{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
}
.platform-item{
  font-size:13px;color:var(--ink);padding:6px 14px;
  border:1px solid var(--line-soft);background:var(--bg);
  transition:all .25s ease;
}
.platform-item:hover{background:var(--ink);color:#fff;border-color:var(--ink);}

/* Process */
.process-wrap{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  border:1px solid var(--line);background:var(--paper);
}
.process-step{
  padding:36px 24px;border-right:1px solid var(--line-soft);
  position:relative;transition:background .3s ease;
}
.process-step:last-child{border-right:none;}
.process-step:hover{background:var(--bg-soft);}
.process-step-num{
  font-family:'Noto Serif SC',serif;font-size:42px;font-weight:700;
  color:var(--ink);line-height:1;opacity:0.15;margin-bottom:14px;
}
.process-step h3{font-size:16px;font-weight:700;margin-bottom:10px;letter-spacing:1px;}
.process-step p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Solutions */
.solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.solution-card{
  border:1px solid var(--line);background:var(--paper);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:all .3s ease;
}
.solution-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.solution-icon{
  width:48px;height:48px;border:1px solid var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-family:'Noto Serif SC',serif;font-size:20px;font-weight:700;
}
.solution-card h3{font-size:17px;font-weight:700;letter-spacing:1px;}
.solution-card p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Network */
.network-grid{
  display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start;
}
.network-map{
  background:var(--paper);border:1px solid var(--line);padding:32px;
}
.network-cities{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;
}
.network-city{
  font-size:13px;padding:6px 12px;border:1px solid var(--line-soft);
  background:var(--bg);transition:all .25s;
}
.network-city:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.network-info-card{
  background:#141414;color:#F2EFE8;padding:32px;
}
.network-info-card h3{
  font-family:'Noto Serif SC',serif;font-size:20px;letter-spacing:2px;margin-bottom:18px;
}
.network-info-list{list-style:none;}
.network-info-list li{
  padding:12px 0;border-bottom:1px solid #2a2a2a;font-size:14px;color:#c8c3b8;
  display:flex;justify-content:space-between;gap:12px;
}
.network-info-list li:last-child{border-bottom:none;}
.network-info-list strong{color:#F2EFE8;font-weight:500;}

/* Flow timeline */
.flow-timeline{position:relative;padding-left:32px;}
.flow-timeline::before{
  content:'';position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:var(--line);
}
.flow-item{position:relative;padding-bottom:32px;}
.flow-item:last-child{padding-bottom:0;}
.flow-item::before{
  content:'';position:absolute;left:-32px;top:6px;width:17px;height:17px;
  background:var(--bg);border:2px solid var(--ink);border-radius:50%;
}
.flow-item h3{font-size:16px;font-weight:700;margin-bottom:6px;letter-spacing:1px;}
.flow-item .flow-time{font-size:12px;color:var(--muted);letter-spacing:2px;margin-bottom:8px;}
.flow-item p{font-size:14px;color:var(--ink-soft);line-height:1.8;}

/* Standards */
.standards-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.standard-card{
  background:var(--paper);border:1px solid var(--line);padding:28px;
  display:flex;gap:20px;align-items:flex-start;transition:all .3s;
}
.standard-card:hover{box-shadow:var(--shadow);}
.standard-code{
  font-family:'Noto Serif SC',serif;font-size:13px;color:#fff;background:var(--ink);
  padding:4px 10px;letter-spacing:2px;flex-shrink:0;
}
.standard-card h3{font-size:16px;font-weight:700;margin-bottom:8px;letter-spacing:1px;}
.standard-card p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Cases */
.cases-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.case-card{
  border:1px solid var(--line);background:var(--paper);overflow:hidden;
  transition:all .35s ease;
}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.case-img-wrap{
  aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);
  border-bottom:1px solid var(--line);
}
.case-img-wrap img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(100%) contrast(1.05);
  transition:filter .5s ease,transform .5s ease;
}
.case-card:hover .case-img-wrap img{filter:grayscale(40%);transform:scale(1.03);}
.case-body{padding:24px;}
.case-tag{
  font-size:11px;letter-spacing:2px;color:var(--muted);
  border:1px solid var(--line-soft);padding:3px 8px;display:inline-block;margin-bottom:12px;
}
.case-body h3{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:1px;font-family:'Noto Serif SC',serif;}
.case-body p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Comparison */
.comparison-top{
  display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:center;margin-bottom:48px;
}
.score-card{
  background:#141414;color:#F2EFE8;padding:40px;text-align:center;
  position:relative;overflow:hidden;
}
.score-card::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(circle, rgba(242,239,232,0.06) 1px, transparent 1px);
  background-size:20px 20px;pointer-events:none;
}
.score-card-tag{font-size:12px;letter-spacing:4px;color:#a8a4a0;margin-bottom:18px;}
.score-card-num{font-family:'Noto Serif SC',serif;font-size:88px;font-weight:700;line-height:1;color:#F2EFE8;}
.score-card-max{font-size:18px;color:#7a7670;margin-top:6px;}
.score-stars{margin-top:18px;font-size:22px;letter-spacing:6px;color:#F2EFE8;}
.score-card-label{font-size:13px;color:#a8a4a0;margin-top:14px;letter-spacing:2px;}
.comparison-summary h3{
  font-family:'Noto Serif SC',serif;font-size:24px;letter-spacing:2px;margin-bottom:16px;
}
.comparison-summary p{font-size:14px;color:var(--ink-soft);line-height:1.9;margin-bottom:14px;}
.comparison-table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--paper);}
.comparison-table{width:100%;border-collapse:collapse;min-width:680px;}
.comparison-table th,.comparison-table td{
  padding:16px 18px;text-align:left;border-bottom:1px solid var(--line-soft);font-size:14px;
}
.comparison-table th{
  background:var(--bg-soft);font-weight:700;letter-spacing:1px;
  font-family:'Noto Serif SC',serif;
}
.comparison-table tr:last-child td{border-bottom:none;}
.comparison-table .col-highlight{background:#141414;color:#F2EFE8;font-weight:600;}
.comparison-table .col-highlight th{background:#141414;color:#F2EFE8;}

/* Form */
.match-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:48px;align-items:start;}
.match-info h3{font-family:'Noto Serif SC',serif;font-size:22px;letter-spacing:2px;margin-bottom:16px;}
.match-info p{font-size:14px;color:var(--ink-soft);line-height:1.9;margin-bottom:20px;}
.match-list{list-style:none;}
.match-list li{
  padding:12px 0;border-bottom:1px dashed var(--line-soft);
  font-size:14px;display:flex;gap:12px;
}
.match-list li::before{
  content:'';width:6px;height:6px;background:var(--ink);margin-top:9px;flex-shrink:0;
}
.match-form{
  background:var(--paper);border:1px solid var(--line);padding:36px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.form-field{display:flex;flex-direction:column;gap:6px;}
.form-field.full{grid-column:1/-1;}
.form-field label{font-size:13px;color:var(--ink-soft);letter-spacing:1px;}
.form-field input,.form-field select,.form-field textarea{
  padding:11px 14px;border:1px solid var(--line-soft);background:var(--bg);
  font-size:14px;color:var(--ink);font-family:inherit;transition:border .25s;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--ink);background:var(--paper);
}
.form-field textarea{resize:vertical;min-height:110px;}
.form-submit{
  width:100%;background:var(--ink);color:#fff;border:1px solid var(--ink);
  padding:14px;font-size:14px;letter-spacing:2px;cursor:pointer;transition:all .3s;
  margin-top:8px;
}
.form-submit:hover{background:#000;transform:translateY(-2px);box-shadow:var(--shadow);}

/* Token */
.token-table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--paper);}
.token-table{width:100%;border-collapse:collapse;min-width:680px;}
.token-table th,.token-table td{padding:14px 18px;border-bottom:1px solid var(--line-soft);font-size:14px;text-align:left;}
.token-table th{background:var(--bg-soft);font-weight:700;letter-spacing:1px;font-family:'Noto Serif SC',serif;}
.token-table tr:last-child td{border-bottom:none;}
.token-table .badge{
  display:inline-block;font-size:11px;padding:2px 8px;
  border:1px solid var(--line);letter-spacing:1px;
}
.token-table .badge-low{background:var(--ink);color:#fff;border-color:var(--ink);}
.token-note{
  font-size:12px;color:var(--muted);margin-top:14px;text-align:right;
}

/* Training */
.training-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.training-card{
  background:var(--paper);border:1px solid var(--line);padding:28px;
  transition:all .3s;position:relative;
}
.training-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.training-card-num{
  font-family:'Noto Serif SC',serif;font-size:14px;color:var(--muted);letter-spacing:2px;
  border-bottom:1px solid var(--line-soft);padding-bottom:12px;margin-bottom:14px;
}
.training-card h3{font-size:17px;font-weight:700;margin-bottom:10px;letter-spacing:1px;font-family:'Noto Serif SC',serif;}
.training-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px;}
.training-cert{
  font-size:12px;color:var(--ink);border:1px solid var(--line);
  padding:4px 10px;display:inline-block;letter-spacing:1px;
}

/* AI Training list */
.ai-training-list{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;
}
.ai-training-item{
  background:var(--paper);border:1px solid var(--line);padding:22px 18px;
  text-align:center;transition:all .3s;
}
.ai-training-item:hover{background:var(--ink);color:#fff;}
.ai-training-item:hover .ai-training-desc{color:#c8c3b8;}
.ai-training-item h3{font-size:14px;font-weight:700;letter-spacing:1px;margin-bottom:8px;}
.ai-training-desc{font-size:12px;color:var(--muted);line-height:1.6;transition:color .3s;}

/* Help */
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.help-card{
  background:var(--paper);border:1px solid var(--line);padding:24px;
  transition:all .3s;text-align:center;
}
.help-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.help-card-icon{
  width:48px;height:48px;border:1px solid var(--ink);margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;
  font-family:'Noto Serif SC',serif;font-size:20px;font-weight:700;
}
.help-card h3{font-size:15px;font-weight:700;margin-bottom:8px;letter-spacing:1px;}
.help-card p{font-size:12px;color:var(--muted);line-height:1.6;}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);background:var(--paper);margin-bottom:12px;
  transition:all .3s;
}
.faq-item:hover{box-shadow:var(--shadow-soft);}
.faq-question{
  padding:20px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-weight:600;font-size:15px;letter-spacing:1px;
}
.faq-question::after{
  content:'+';font-size:22px;font-weight:300;color:var(--ink);transition:transform .3s;
  flex-shrink:0;
}
.faq-item.active .faq-question::after{transform:rotate(45deg);}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .4s ease;
}
.faq-item.active .faq-answer{max-height:400px;}
.faq-answer-inner{
  padding:0 24px 22px;font-size:14px;color:var(--ink-soft);line-height:1.85;border-top:1px dashed var(--line-soft);padding-top:16px;
}

/* Troubleshooting */
.trouble-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.trouble-card{
  background:var(--paper);border:1px solid var(--line);padding:24px;
  transition:all .3s;
}
.trouble-card:hover{box-shadow:var(--shadow-soft);}
.trouble-card h3{font-size:15px;font-weight:700;margin-bottom:12px;letter-spacing:1px;display:flex;align-items:center;gap:10px;}
.trouble-card h3::before{
  content:'';width:24px;height:24px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'Noto Serif SC',serif;font-size:13px;font-weight:700;
}
.trouble-card p{font-size:13px;color:var(--muted);line-height:1.7;}
.trouble-step{font-size:13px;color:var(--ink-soft);padding:6px 0;border-bottom:1px dashed var(--line-soft);}
.trouble-step:last-child{border-bottom:none;}

/* Glossary */
.glossary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.glossary-card{
  background:var(--paper);border:1px solid var(--line-soft);padding:20px;
  transition:all .3s;
}
.glossary-card:hover{border-color:var(--ink);box-shadow:var(--shadow-soft);}
.glossary-term{
  font-family:'Noto Serif SC',serif;font-size:16px;font-weight:700;
  letter-spacing:1px;margin-bottom:8px;color:var(--ink);
}
.glossary-card p{font-size:13px;color:var(--muted);line-height:1.7;}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  border:1px solid var(--line);background:var(--paper);padding:24px;
  transition:all .3s;display:flex;flex-direction:column;gap:12px;
}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.news-date{font-size:12px;color:var(--muted);letter-spacing:2px;}
.news-card h3{font-size:16px;font-weight:700;line-height:1.5;letter-spacing:1px;}
.news-card p{font-size:13px;color:var(--muted);line-height:1.7;flex:1;}
.news-link{font-size:13px;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px;display:inline-block;width:fit-content;}

/* Tag cloud */
.tag-cloud{
  margin-top:40px;padding:28px;background:var(--paper);border:1px solid var(--line);
}
.tag-cloud h3{font-family:'Noto Serif SC',serif;font-size:16px;letter-spacing:2px;margin-bottom:16px;text-align:center;}
.tag-cloud-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.tag-cloud-list a{
  font-size:13px;padding:6px 14px;border:1px solid var(--line-soft);background:var(--bg);
  transition:all .25s;
}
.tag-cloud-list a:hover{background:var(--ink);color:#fff;border-color:var(--ink);}

/* Reviews */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  background:var(--paper);border:1px solid var(--line);padding:28px;
  display:flex;flex-direction:column;gap:14px;transition:all .3s;position:relative;
}
.review-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);}
.review-card::before{
  content:'“';position:absolute;top:14px;right:20px;
  font-family:'Noto Serif SC',serif;font-size:60px;color:var(--line-soft);line-height:1;
}
.review-stars{color:var(--ink);letter-spacing:3px;font-size:14px;}
.review-text{font-size:14px;color:var(--ink-soft);line-height:1.85;flex:1;}
.review-user{display:flex;align-items:center;gap:12px;border-top:1px dashed var(--line-soft);padding-top:14px;}
.review-avatar{
  width:40px;height:40px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:'Noto Serif SC',serif;font-weight:700;
}
.review-name{font-size:14px;font-weight:600;letter-spacing:1px;}
.review-role{font-size:12px;color:var(--muted);}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start;}
.contact-info-card{
  background:var(--paper);border:1px solid var(--line);padding:36px;
}
.contact-info-card h3{font-family:'Noto Serif SC',serif;font-size:22px;letter-spacing:2px;margin-bottom:20px;}
.contact-list{list-style:none;margin-bottom:24px;}
.contact-list li{
  padding:14px 0;border-bottom:1px dashed var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;font-size:14px;
}
.contact-list li:last-child{border-bottom:none;}
.contact-list .label{color:var(--muted);letter-spacing:1px;flex-shrink:0;}
.contact-list .value{color:var(--ink);font-weight:500;text-align:right;}
.contact-qr{
  background:var(--paper);border:1px solid var(--line);padding:32px;text-align:center;
}
.contact-qr h3{font-family:'Noto Serif SC',serif;font-size:18px;letter-spacing:2px;margin-bottom:18px;}
.contact-qr-img{
  width:200px;height:200px;margin:0 auto 16px;border:1px solid var(--line);
  overflow:hidden;background:var(--bg);
}
.contact-qr-img img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%);}
.contact-qr p{font-size:13px;color:var(--muted);line-height:1.7;}

/* Footer */
.site-footer{
  background:#141414;color:#a8a4a0;padding:60px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand img{height:36px;}
.footer-brand-name{font-family:'Noto Serif SC',serif;font-size:18px;color:#F2EFE8;letter-spacing:2px;}
.footer-desc{font-size:13px;line-height:1.8;color:#7a7670;margin-bottom:18px;}
.footer-social{display:flex;gap:12px;flex-wrap:wrap;}
.footer-social span{
  font-size:12px;padding:5px 10px;border:1px solid #2a2a2a;color:#a8a4a0;letter-spacing:1px;
}
.footer-col h4{
  font-family:'Noto Serif SC',serif;font-size:14px;color:#F2EFE8;
  letter-spacing:2px;margin-bottom:18px;
}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13px;color:#7a7670;transition:color .25s;}
.footer-col a:hover{color:#F2EFE8;}
.footer-links{
  border-top:1px solid #2a2a2a;padding:24px 0;margin-bottom:18px;
}
.footer-links-title{font-size:13px;color:#a8a4a0;margin-bottom:14px;letter-spacing:2px;}
.footer-links-list{display:flex;flex-wrap:wrap;gap:12px;}
.footer-links-list a{
  font-size:12px;color:#7a7670;padding:4px 10px;border:1px solid #2a2a2a;transition:all .25s;
}
.footer-links-list a:hover{border-color:#F2EFE8;color:#F2EFE8;}
.footer-bottom{
  border-top:1px solid #2a2a2a;padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:12px;color:#5a5650;
}
.footer-bottom a{color:#7a7670;}

/* Floating service */
.float-service{
  position:fixed;right:20px;bottom:30px;z-index:90;
  display:flex;flex-direction:column;gap:10px;
}
.float-btn{
  width:48px;height:48px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;border:1px solid var(--ink);transition:all .3s;
  font-family:'Noto Serif SC',serif;font-size:13px;font-weight:700;letter-spacing:1px;
}
.float-btn:hover{background:#000;transform:translateY(-3px);}
.back-top{display:none;}
.back-top.show{display:flex;}

.float-panel{
  position:fixed;right:20px;bottom:90px;z-index:91;
  background:var(--paper);border:1px solid var(--line);padding:18px;
  width:220px;display:none;box-shadow:var(--shadow);
}
.float-panel.show{display:block;}
.float-panel h4{font-size:13px;letter-spacing:2px;margin-bottom:10px;text-align:center;}
.float-panel-qr{width:160px;height:160px;margin:0 auto 8px;border:1px solid var(--line-soft);overflow:hidden;}
.float-panel-qr img{width:100%;height:100%;object-fit:cover;filter:grayscale(100%);}
.float-panel p{font-size:11px;color:var(--muted);text-align:center;line-height:1.6;}

/* Animations */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.fade-in.visible{opacity:1;transform:translateY(0);}

/* Responsive */
@media (max-width:980px){
  .nav-wrap{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;padding:16px;gap:4px;max-height:70vh;overflow-y:auto;}
  .nav-wrap.open{display:flex;}
  .nav-link{padding:12px 16px;width:100%;}
  .nav-link::after{display:none;}
  .nav-cta{width:100%;text-align:center;margin-top:8px;}
  .menu-toggle{display:block;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .about-grid,.match-grid,.contact-grid,.comparison-top,.network-grid{grid-template-columns:1fr;gap:32px;}
  .services-grid,.solutions-grid,.training-grid,.reviews-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
  .ai-training-list{grid-template-columns:repeat(2,1fr);}
  .process-wrap{grid-template-columns:repeat(2,1fr);}
  .process-step{border-right:none;border-bottom:1px solid var(--line-soft);}
  .process-step:nth-child(2n){border-right:none;}
  .help-grid{grid-template-columns:repeat(2,1fr);}
  .glossary-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cases-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .hero{padding:56px 0 48px;}
  .hero-meta{gap:24px;}
  .section{padding:56px 0;}
  .stats-grid,.services-grid,.solutions-grid,.training-grid,.reviews-grid,.news-grid,.help-grid,.glossary-grid,.about-cards,.trouble-grid,.standards-grid,.form-row{grid-template-columns:1fr;}
  .ai-training-list{grid-template-columns:1fr;}
  .process-wrap{grid-template-columns:1fr;}
  .match-form,.contact-info-card,.contact-qr{padding:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .review-card::before{font-size:48px;}
}