@media (max-width: 600px){
  html,body{width:100%;max-width:100%;overflow-x:hidden}
  body{padding-bottom:76px;background:#fff}
  .site-header{height:64px;padding:0 16px}
  .brand{font-size:20px;gap:8px}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:22px;border-radius:11px}
  .menu-btn{font-size:28px;line-height:1;padding:4px}
  .hero{display:block;min-height:auto;padding:24px 16px 34px;width:100%;overflow:hidden}
  .hero-content{width:100%;max-width:100%;min-width:0}
  .eyebrow{font-size:9px;letter-spacing:.09em;line-height:1.35;margin:0 0 8px}
  h1{font-size:clamp(34px,10.3vw,43px);line-height:1.02;letter-spacing:-.035em;margin:8px 0 14px;max-width:100%;overflow-wrap:normal;word-break:normal}
  h1 br{display:none}
  h1 em{display:block}
  .hero-lead{font-size:14px;line-height:1.5;margin:0 0 16px;max-width:100%}
  .tour-gpt{width:100%;max-width:100%;margin:16px 0 0;padding:14px;border-radius:18px;overflow:hidden;box-shadow:0 14px 36px rgba(16,42,67,.14)}
  .tour-gpt:before{font-size:8px;padding:5px 8px;margin-bottom:10px}
  .gpt-head{display:grid;grid-template-columns:40px minmax(0,1fr);gap:10px;align-items:center;width:100%}
  .gpt-logo{width:40px;height:40px;flex-basis:40px;border-radius:12px;font-size:18px}
  .gpt-head>div{min-width:0;width:100%}
  .gpt-head small{font-size:8px;line-height:1.25;letter-spacing:.1em}
  .gpt-head h2{font-size:17px;line-height:1.22;margin:2px 0 0;white-space:normal;overflow-wrap:anywhere}
  .gpt-composer{display:grid;grid-template-columns:minmax(0,1fr) 42px;gap:8px;align-items:end;width:100%;padding:10px 8px 8px 12px;border-radius:15px;margin-top:12px}
  .gpt-composer textarea{width:100%;min-width:0;min-height:88px;font-size:14px;line-height:1.45;padding:0}
  .gpt-composer button{width:42px;height:42px;min-width:42px;flex:0 0 42px;border-radius:12px;font-size:20px}
  .gpt-chips{display:flex;width:100%;max-width:100%;overflow-x:auto;flex-wrap:nowrap;gap:8px;padding:1px 0 4px;margin-top:10px;scroll-snap-type:x proximity;scrollbar-width:none}
  .gpt-chips::-webkit-scrollbar{display:none}
  .gpt-chips button{flex:0 0 auto;max-width:82vw;white-space:nowrap;font-size:10px;padding:7px 10px;scroll-snap-align:start}
  .advanced-search{width:100%;max-width:100%;margin-top:14px}
  .advanced-search summary{font-size:11px;line-height:1.4}
  .search-box{width:100%;max-width:100%;grid-template-columns:1fr;padding:8px;border-radius:16px}
  .search-field{min-width:0;padding:10px 8px;border-right:0;border-bottom:1px solid var(--line)}
  .search-box button{width:100%;padding:14px 12px;margin-top:8px}
  .trust-row{display:grid;grid-template-columns:1fr;gap:6px;margin-top:14px;font-size:10px}
  .hero-visual{display:none}
  .section{padding:54px 16px}
  .section-head{align-items:flex-start;gap:12px}
  .section-head h2{font-size:32px;line-height:1.08}
  .how-section{margin:24px 16px 44px;padding:26px 18px;border-radius:24px}
  .how-section h2{font-size:34px;line-height:1.08}
  .bottom-nav{height:70px;padding-bottom:max(0px,env(safe-area-inset-bottom));display:flex;align-items:stretch}
  .bottom-nav a{flex:1;min-width:0;gap:3px;font-size:10px}
  .bottom-nav a span{font-size:17px;line-height:1}
}

@media (max-width: 380px){
  .site-header{padding:0 13px}
  .brand{font-size:18px}
  .brand-mark{width:34px;height:34px;flex-basis:34px}
  .hero{padding:20px 13px 30px}
  h1{font-size:34px}
  .hero-lead{font-size:13px}
  .tour-gpt{padding:12px}
  .gpt-head h2{font-size:16px}
  .gpt-composer textarea{font-size:13px;min-height:82px}
}