/* =========================================================
   FUJIN — Responsive
   ========================================================= */

@media (max-width:1180px){
  .container{padding-inline:24px}
  .hero-inner{gap:36px}
  .hero h1{font-size:clamp(2.5rem,4.8vw,3.9rem)}
  .console-wrap{max-width:470px}
  .chip-b{left:-18px}
}

@media (max-width:1040px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;inset:0;z-index:1;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:104px 24px 40px;
    background:rgba(18,27,46,.97);
    backdrop-filter:blur(22px);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s;
    overflow-y:auto;
  }
  body.nav-open .nav{opacity:1;visibility:visible;transform:none}
  body.nav-open{overflow:hidden}
  .nav-link{font-size:1.18rem;padding:18px 10px;border-bottom:1px solid rgba(255,255,255,.055);border-radius:0}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:#5eead4}
  .nav-mobile-extra{display:flex;flex-direction:column;gap:20px;margin-top:30px}
  .nav-mobile-extra .btn{width:100%}
  .header-cta{display:none}
  .header-inner{height:72px}
  .hero{min-height:auto;padding:132px 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:54px}
  .hero-copy{max-width:760px}
  .console-wrap{max-width:560px;margin:0 auto}
  .console{transform:none}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:24px}
  .ai-band-inner{padding:48px 40px}
  .ai-head{flex-direction:column;align-items:flex-start;gap:24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:38px}
  .footer-brand{grid-column:1/-1}
  .footer-brand p{max-width:520px}
}

@media (max-width:920px){
  .section{padding:88px 0}
  .page-hero{padding:138px 0 60px}
  .split,.split.narrow{grid-template-columns:1fr;gap:40px}
  .split.reverse .split-copy{order:1}
  .split.reverse .split-visual{order:2}
  .split-visual{max-width:620px}
  .ai-layout{grid-template-columns:1fr;gap:28px}
  .tab-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;scrollbar-width:none}
  .tab-list::-webkit-scrollbar{display:none}
  .tab-btn{flex:none;width:auto;padding:12px 16px}
  .tab-btn .t-arrow{display:none}
  .tab-panels{min-height:0}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .process::before{display:none}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .tech-groups{grid-template-columns:repeat(2,1fr)}
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .case-card{grid-column:span 1}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .audience-grid{grid-template-columns:repeat(2,1fr)}
  .format-row{grid-template-columns:repeat(2,1fr)}
  .contact-layout{grid-template-columns:1fr;gap:30px}
  .contact-side{order:2}
  .page-hero--split{grid-template-columns:1fr;gap:38px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3)::before{display:none}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .arch-row{grid-template-columns:110px 1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1/-1}
  .cta-box{padding:54px 30px}
  .ai-band-inner{padding:40px 28px;border-radius:24px}
  .panel-list{grid-template-columns:1fr}
}

@media (max-width:720px){
  .container{padding-inline:20px}
  .header-inner{height:66px}
  .brand-mark{width:34px;height:34px}
  .brand-sub{font-size:.53rem}
  .lang-btn{min-width:34px;height:28px;font-size:.67rem;padding:0 7px}
  .header-actions{gap:9px}
  .hero{padding:116px 0 60px}
  .hero h1{font-size:clamp(2.3rem,9vw,3.2rem);letter-spacing:-.035em}
  .hero-sub{font-size:.96rem;line-height:1.75}
  .hero-badge{font-size:.68rem;margin-bottom:22px}
  .hero-micro{gap:8px 16px;font-size:.73rem}
  .hero-glow.g1{width:400px;height:400px}
  .hero-glow.g2{width:380px;height:380px}
  .console-body{padding:16px}
  .c-metrics{gap:6px}
  .c-metric{padding:9px}
  .c-metric b{font-size:.86rem}
  .float-chip{display:none}
  .stack-bar{padding-top:20px}
  .stats{padding-top:40px}
  .stat{padding:22px 20px}
  .section{padding:74px 0}
  .section-head{margin-bottom:38px}
  .section-head p{margin-top:14px}
  .h2{font-size:clamp(1.75rem,6.5vw,2.35rem)}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .industry-grid{grid-template-columns:1fr 1fr;gap:10px}
  .industry{padding:18px 16px}
  .industry p{font-size:.72rem}
  .process{grid-template-columns:1fr;gap:26px}
  .step{display:grid;grid-template-columns:50px 1fr;column-gap:16px}
  .step-num{grid-row:1/5;margin-bottom:0}
  .step h3{margin-bottom:4px}
  .step .step-en{margin-top:6px}
  .why-grid{grid-template-columns:1fr}
  .why{display:grid;grid-template-columns:40px 1fr;gap:0 14px;align-items:start}
  .why .num{grid-row:1/3;margin:2px 0 0}
  .why h3{grid-column:2}
  .why p{grid-column:2}
  .case-metrics{gap:18px}
  .course-grid,.tech-groups,.tech-groups.four,.team-grid,.audience-grid,.format-row,.value-grid{grid-template-columns:1fr}
  .course-card{min-height:0}
  .ai-band-inner{padding:32px 20px}
  .panel-card{padding:22px}
  .panel-foot{flex-direction:column;align-items:flex-start;gap:14px}
  .panel-metric{text-align:left}
  .tab-panels{min-height:0}
  .cta-section{padding-bottom:80px}
  .cta-box{padding:44px 22px;border-radius:24px}
  .cta-box .btn-row .btn{width:100%}
  .page-hero{padding:118px 0 50px}
  .page-hero h1{font-size:clamp(2rem,8vw,2.8rem);letter-spacing:-.035em}
  .breadcrumb{margin-bottom:20px;font-size:.7rem}
  .arch{padding:20px 16px}
  .arch-row{grid-template-columns:1fr;gap:10px;padding:16px 0}
  .arch-label{text-align:left;display:flex;align-items:baseline;gap:8px}
  .arch-label span{margin-top:0}
  .form-panel{padding:24px 20px;border-radius:20px}
  .form-grid{grid-template-columns:1fr;gap:16px}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-note{min-width:0}
  .contact-card{padding:18px}
  .faq-item summary{padding:17px 18px;font-size:.86rem;gap:12px}
  .faq-body{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:38px}
  .site-footer{padding-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:16px}
  .footer-lang{order:-1}
  .timeline{padding-left:26px}
  .tl-item{padding-left:18px}
  .tl-item::before{left:-26px}
  .tl-item::after{left:-22px}
  .quote-box{padding:26px 20px}
  .quote-box p{font-size:.92rem}
  .mini-stats{gap:8px}
  .mini-stat{padding:14px 10px}
  .mini-stat b{font-size:1.15rem}
  .logo-strip{gap:14px 26px}
  .logo-strip span{font-size:.75rem}
}

@media (max-width:460px){
  .brand-sub{display:none}
  .hero h1{font-size:2.25rem}
  .btn{min-height:50px;padding:0 20px;font-size:.9rem}
  .hero-actions{display:flex;flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .industry-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:18px 16px}
  .stat-num{font-size:1.65rem}
  .stat-label{font-size:.72rem}
  .c-query p{font-size:.76rem}
  .c-metric span{font-size:.55rem}
  .c-log{font-size:.58rem}
  .tab-btn .t-name{font-size:.82rem}
  .tab-btn{padding:10px 13px}
  .page-hero .btn-row .btn{width:100%}
  .form-grid{grid-template-columns:1fr}
  .check-list.two-col{grid-template-columns:1fr}
  .arch-chips{gap:5px}
  .arch-chip{font-size:.64rem;padding:5px 8px}
  .footer-lang .lang-btn{min-width:58px}
}