@charset "UTF-8";
:root{--blue:#0756b8;--navy:#062a53;--ink:#142f48;--muted:#4b6173;--line:#d7e1e9;--pale:#f0f5f8;--accent:#69d4e5;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}body{margin:0;color:var(--ink);background:white;font-family:"Microsoft YaHei","DengXian",Arial,sans-serif;font-size:18px;line-height:1.75}button,input,textarea,select{font:inherit;color:inherit}button,a,input,textarea{touch-action:manipulation}a{color:var(--blue);text-underline-offset:5px}a:hover{text-decoration:underline}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}h1,h2,h3,p{margin:0 0 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@media(max-width:1100px){.wrap{width:calc(100% - 56px)}.header-row{gap:22px}.header-row nav{gap:18px}.brand img{width:150px}.hero-index{display:none}.product-info{padding:23px}.product-grid{gap:20px}.quick-strip{gap:22px}.editorial{gap:36px}}
@media(max-width:800px){html{scroll-padding-top:105px}.wrap{width:calc(100% - 36px)}.prototype-bar{padding:8px 16px;line-height:1.55;text-align:left}.header-row{min-height:80px;gap:16px;flex-wrap:wrap}.brand img{width:141px}.menu-toggle{display:block;font-size:18px;border:0;background:transparent;padding:12px 0}.header-cta{font-size:18px}.header-row nav{display:none;flex-basis:100%;order:5;flex-direction:column;gap:0;padding-bottom:18px}.header-row nav.open{display:flex}.header-row nav a{padding:12px 0}.home-hero{min-height:610px}.hero-copy{padding:55px 0}.home-hero h1{font-size:42px}.lead,.section-intro{font-size:20px}.hero-photo{object-position:60% center}.home-hero:after{background:linear-gradient(90deg,#031c39e8,#042b4c9c)}.actions{gap:12px}.btn{padding:14px 18px}.quick-strip{display:grid;grid-template-columns:1fr 1fr;gap:16px;font-size:18px}.quick-strip a{margin:0}.section{padding:54px 0}.page-top{padding:46px 0}.product-grid,.editorial,.product-detail,.photo-grid,.split,.faq-layout,.option-grid,.evidence-grid,.footer-grid{grid-template-columns:1fr}.product-image{height:340px}.product-info h3{min-height:0}.product-stage{position:static;padding:25px}.product-stage img{height:400px}.product-detail{gap:32px}.editorial{gap:28px}.photo-grid{gap:34px}.panel{padding:24px}.form-grid{grid-template-columns:1fr}.span2{grid-column:auto}.download-list a{display:block}.download-list span{display:block;margin-top:10px}.step-nav{grid-template-columns:1fr 1fr;gap:8px}.step-nav a{padding:12px 10px}.evidence-grid{gap:28px}.evidence-no{font-size:36px;margin-bottom:8px}.footer-grid{gap:24px}.footer-grid>div:last-child{grid-template-columns:1fr 1fr}.hero-note{line-height:1.8}.check-btn{justify-content:flex-start}.video-frame{margin-top:28px}th,td{padding:12px 8px}h3{font-size:25px}.dialog-top{align-items:start}.dialog-top h2{font-size:28px}.selected-item{align-items:start}.step-controls{gap:15px}.notice{padding:18px}.header-row nav a.current{box-shadow:none;color:var(--blue)}.brand{margin-right:auto}}
@media(max-width:800px){.brand img{width:120px}.header-row{gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.product-image img{transition:none}}
@media print{header,.prototype-bar,footer,.actions,.step-nav,button{display:none!important}body{font-size:18px}.wrap{width:100%}.section,.page-top{padding:20px 0}.proposal-step{display:block;break-before:page}.option{break-inside:avoid}.product-stage{position:static}a{color:#142f48}.split{display:block}.panel{margin-bottom:20px}}