/* 页面基础与响应式布局 */
:root{--blue:#1450eb;--ink:#162434;--muted:#7a899c;--bg:#f5f7fb}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei", "PingFang SC", sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}.container{width:min(1280px,calc(100% - 48px));margin:auto}.section{padding:96px 0}.header{position:absolute;z-index:10;top:38px;left:0;width:100%}.nav-shell{width:min(1280px,calc(100% - 48px));height:82px;margin:auto;padding:0 34px;display:flex;align-items:center;gap:40px;border:1px solid rgba(255,255,255,.75);border-radius:50px;background:rgba(255,255,255,.72);box-shadow:0 5px 22px #4b79a61a;backdrop-filter:blur(15px)}.logo{width:150px;flex:none}.logo img{width:100%;max-height:48px;object-fit:contain}.nav{display:flex;align-items:center;justify-content:center;gap:38px;flex:1;height:100%;white-space:nowrap}.nav a{height:100%;display:flex;align-items:center;position:relative;font-size:15px;font-weight:600;transition:color .25s}.nav a:hover,.nav a.active{color:var(--blue)}.nav a.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;border-radius:4px;background:var(--blue)}.phone{white-space:nowrap;font-size:14px}.phone span{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;color:#fff;background:#102945;margin-right:8px}.menu-toggle{display:none}.hero{height:min(800px,58vw);min-height:620px;position:relative;overflow:hidden;background:#dceaf4 url('assets/hero.webp') center center/cover no-repeat;border-radius:0 0 26px 26px}.hero-content{height:100%;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding-top:75px}.hero-kicker{letter-spacing:.25em;color:#5590c2;font-size:11px;font-weight:bold;margin:0 0 18px}.hero h1{font-size:clamp(32px,2.65vw,52px);line-height:1.42;letter-spacing:.01em;margin:0;color:#1651e9}.hero-copy{font-size:15px;line-height:2;color:#7294aa;max-width:570px;margin:38px 0}.outline-link{display:inline-flex;align-items:center;gap:24px;border:1px solid var(--blue);border-radius:40px;color:var(--blue);font-size:14px;padding:10px 12px 10px 20px;transition:background .25s,color .25s,transform .25s}.outline-link:hover{background:var(--blue);color:white;transform:translateY(-3px)}.outline-link span{width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff}.outline-link:hover span{background:white;color:var(--blue)}.hero-scroll{position:absolute;bottom:26px;right:10%;color:#7097ae;font-size:10px;letter-spacing:.2em;display:flex;gap:15px;align-items:center}.hero-scroll i{width:46px;height:1px;background:#7da8c4}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:42px}.section-heading h2{font-size:30px;line-height:1.2;margin:0 0 10px;display:flex;align-items:center;gap:14px}.section-heading h2:before{content:"";width:17px;height:17px;display:inline-block;background:var(--blue);border-radius:5px;transform:rotate(45deg);box-shadow:5px -5px 0 -2px #b8d4ff}.section-heading p{font-size:13px;color:#8b98a8;margin:0}.section-en{font-size:11px;letter-spacing:.2em;color:#b1bfd1}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.service-card{height:360px;position:relative;overflow:hidden;border-radius:20px;background:#b8cee2;box-shadow:0 10px 24px #2f67a21a}.service-card:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(18,65,206,.88))}.service-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s}.service-card:hover img{transform:scale(1.08)}.service-card div{position:absolute;z-index:1;left:12px;right:12px;bottom:24px;color:white;text-align:center}.service-card h3{font-size:19px;margin:0 0 8px}.service-card p{font-size:12px;margin:0;opacity:.9}.products{padding-top:30px}.product-tabs{display:flex;justify-content:space-between;gap:8px;margin-bottom:22px;overflow:auto}.product-tabs button{border:0;background:transparent;color:#7d8998;font-size:14px;white-space:nowrap;padding:13px 15px;cursor:pointer;position:relative}.product-tabs button.selected{color:var(--blue);font-weight:bold}.product-tabs button.selected:after{content:"";position:absolute;bottom:0;left:15px;right:15px;height:3px;background:var(--blue);border-radius:3px}.product-grid{display:grid;grid-template-columns:1fr 1.1fr;grid-template-rows:240px 240px;gap:18px}.product-card{position:relative;overflow:hidden;border-radius:18px;background:#dbe7f0}.product-tall{grid-column:2;grid-row:1/3}.product-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s}.product-card:hover img{transform:scale(1.05)}.product-card span{position:absolute;bottom:0;left:0;right:0;padding:28px 20px 16px;text-align:center;color:white;font-weight:bold;background:linear-gradient(transparent,#164bc9bd)}.banner{min-height:300px;display:flex;align-items:center;text-align:center;color:var(--blue);background-position:center;background-size:cover}.banner-one{background-image:url('assets/banner-one.webp')}.banner h2{font-size:32px;margin:0 0 14px}.banner p{font-size:14px;color:#6d91b0;margin:0 0 24px}.about-wrap{background:#fff url('assets/about-bg.webp') center/cover no-repeat}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.about-copy h3{font-size:28px;line-height:1.5;margin:0 0 22px}.about-copy p{font-size:14px;color:#718094;line-height:2.1;margin:0 0 18px}.about-copy .outline-link{margin-top:10px}.about-photo{border-radius:22px;overflow:hidden;box-shadow:0 20px 45px #2463a828}.about-photo img{width:100%;height:420px;object-fit:cover}.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}.back-top{position:fixed;bottom:28px;right:28px;z-index:9;width:46px;height:46px;border:0;border-radius:50%;background:var(--blue);color:white;font-size:22px;box-shadow:0 8px 20px #1450eb55;cursor:pointer;opacity:0;pointer-events:none;transition:.25s}.back-top.show{opacity:1;pointer-events:auto}
@media(max-width:1050px){.nav-shell{gap:20px;padding:0 24px}.nav{gap:18px}.phone{font-size:12px}.service-card{height:290px}.service-card h3{font-size:16px}}
@media(max-width:760px){.container{width:calc(100% - 36px)}.section{padding:64px 0}.header{top:16px}.nav-shell{width:calc(100% - 32px);height:64px;justify-content:space-between}.logo{width:112px}.phone{display:none}.menu-toggle{display:flex;flex-direction:column;gap:5px;border:0;background:none;padding:10px;cursor:pointer}.menu-toggle span{width:22px;height:2px;background:#163755}.nav{display:none;position:absolute;top:74px;left:0;right:0;height:auto;padding:14px 20px;flex-direction:column;align-items:stretch;gap:0;border-radius:18px;background:#fff;box-shadow:0 12px 30px #16375522}.nav.open{display:flex}.nav a{height:auto;padding:13px}.nav a.active:after{display:none}.hero{height:700px;min-height:0;background-position:62% center}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(228,240,248,.96) 0%,rgba(228,240,248,.84) 48%,rgba(228,240,248,.1) 100%)}.hero-content{position:relative;padding-top:60px}.hero h1{font-size:clamp(28px,7vw,40px)}.hero-copy{max-width:80%;font-size:13px;margin:25px 0}.hero-scroll{display:none}.section-heading h2{font-size:25px}.section-heading p{font-size:12px;line-height:1.7}.section-en{display:none}.service-grid{grid-template-columns:repeat(2,1fr);gap:12px}.service-card{height:260px;border-radius:14px}.service-card h3{font-size:14px}.service-card p{font-size:10px}.products{padding-top:0}.product-grid{grid-template-rows:150px 150px;gap:10px}.product-card{border-radius:12px}.product-card span{font-size:12px;padding:28px 8px 12px}.banner{min-height:220px}.banner h2{font-size:23px}.banner p{font-size:12px;line-height:1.8}.about-grid{grid-template-columns:1fr;gap:30px}.about-photo img{height:270px}.about-copy h3{font-size:24px}}
@media(max-width:390px){.service-card{height:210px}.service-card h3{font-size:13px}.hero-copy{max-width:90%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}
.product-tabs span{color:#7d8998;font-size:14px;white-space:nowrap;padding:13px 15px}.product-tabs span.selected{color:var(--blue);font-weight:bold;border-bottom:3px solid var(--blue)}
/* 二级页面入口。 */
.inner-more,.inner-about-link{display:inline-block;color:#1450eb;font-size:14px;white-space:nowrap;transition:transform .25s}.inner-more:hover,.inner-about-link:hover{transform:translateX(4px)}.inner-about-link{margin-left:20px}.lower-heading{position:relative}.lower-heading .inner-more{position:absolute;right:0;top:10px}
.inner-contact-link{color:#a8c4ff;font-size:14px}
/* 动态分类选项与无内容提示。 */
.product-tabs button:focus-visible,.case-tabs button:focus-visible{outline:2px solid #1450eb;outline-offset:3px}
.content-empty{grid-column:1/-1;display:grid;place-items:center;min-height:160px;color:#8290a3;background:#fff;border-radius:14px}
.site-error{position:fixed;z-index:99;top:12px;left:50%;transform:translateX(-50%);padding:12px 20px;background:#a32121;color:#fff;border-radius:8px;box-shadow:0 5px 20px #0003}
.product-grid{grid-auto-rows:240px}
@media(max-width:760px){.product-grid{grid-auto-rows:150px}}
/* 后台内容中的换行保留为页面排版。 */
.hero h1,.banner h2,.lower-banner h2,.about-copy h3,.about-copy p,.process-grid p{white-space:pre-line}
#news .news-feature + .news-feature{margin-top:36px}
[hidden]{display:none!important}