@charset "utf-8";
/* 昌源达 SEO 改版 - 主样式 | 移动优先，无外部依赖，零阻塞字体 */
:root{
  --gold:#c9a227; --gold-lt:#e8c75a; --gold-dk:#9c7a12;
  --ink:#111418; --ink-2:#1c222b; --ink-3:#2b3440;
  --gray:#5a6572; --gray-lt:#8b96a3; --line:#e3e7ec;
  --bg:#fff; --bg-soft:#f6f8fa; --bg-dark:#14181d;
  --brand:#0d2a4a; --ok:#1a7f4b;
  --wrap:1200px; --r:8px; --sh:0 2px 12px rgba(17,20,24,.07);
  --nav-h:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.35;margin:0 0 .6em}
p{margin:0 0 1em}
table{border-collapse:collapse;width:100%}
input,textarea,button,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.sec{padding:48px 0}
.sec-alt{background:var(--bg-soft)}
.tac{text-align:center}
.h2-t{font-size:clamp(22px,4vw,32px);margin-bottom:8px}
.h2-s{color:var(--gray);font-size:15px;margin-bottom:28px}
.eyebrow{color:var(--gold);font-size:13px;letter-spacing:.18em;text-transform:uppercase;font-weight:700;margin-bottom:6px}
.gold{color:var(--gold-dk)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 顶栏 ---------- */
.topbar{background:var(--bg-dark);color:#c9d1da;font-size:13px}
.topbar .wrap{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between;align-items:center;min-height:36px}
.topbar a{color:#c9d1da}
.topbar a:hover{color:var(--gold-lt)}
.hot-line{color:var(--gold-lt);font-weight:700;letter-spacing:.03em}

.masthead{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 6px rgba(0,0,0,.04)}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo img{height:46px;width:auto}
.logo-tx strong{display:block;font-size:19px;letter-spacing:.02em;line-height:1.2}
.logo-tx span{display:block;font-size:12px;color:var(--gray);letter-spacing:.04em}
.nav-tel{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-tel b{color:var(--gold-dk);font-size:clamp(16px,2.4vw,21px);letter-spacing:.02em;white-space:nowrap}

/* 导航 */
.nav{background:var(--brand);position:relative}
.nav .wrap{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav .wrap::-webkit-scrollbar{display:none}
.nav .wrap>li{flex:0 0 auto}
.nav .wrap>li>a{display:block;padding:14px 15px;color:#dce6f0;font-size:15px;white-space:nowrap;border-bottom:3px solid transparent}
.nav .wrap>li>a:hover{color:#fff;border-bottom-color:var(--gold-lt)}
.nav .wrap>li.on>a{color:#fff;border-bottom-color:var(--gold)}
.nav-toggle{display:none;background:none;border:0;padding:10px 0 10px 14px;cursor:pointer}
.nav-toggle i{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;transition:.25s}
.nav-toggle[aria-expanded=true] i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded=true] i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded=true] i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:var(--bg-dark) url(/images/banner.jpg) center/cover no-repeat;color:#fff;isolation:isolate}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,14,20,.92) 0%,rgba(10,14,20,.72) 55%,rgba(10,14,20,.45) 100%);z-index:-1}
.hero-in{padding:76px 0 64px;max-width:720px}
.hero h1{font-size:clamp(26px,5.4vw,46px);line-height:1.25;margin-bottom:16px;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--gold-lt)}
.hero .lead{font-size:clamp(15px,2.2vw,18px);color:#c3ccd6;margin-bottom:26px;max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.hero-tags li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:5px 14px;font-size:13px;color:#e6ecf3}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-stat{display:flex;flex-wrap:wrap;gap:28px 40px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-stat div b{display:block;font-size:clamp(22px,3.4vw,30px);color:var(--gold-lt);line-height:1.2}
.hero-stat div span{font-size:13px;color:#aeb8c4}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:12px 26px;border-radius:var(--r);font-weight:700;font-size:15px;text-align:center;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-gold{background:linear-gradient(135deg,var(--gold-lt),var(--gold));color:#241c00;box-shadow:0 4px 14px rgba(201,162,39,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(201,162,39,.45)}
.btn-out{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.35);color:#fff}
.btn-out:hover{background:rgba(255,255,255,.14)}
.btn-line{border-color:var(--gold);color:var(--gold-dk)}
.btn-line:hover{background:var(--gold);color:#241c00}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-b{width:100%;border:0;background:linear-gradient(135deg,var(--gold-lt),var(--gold));color:#241c00;font-weight:700;border-radius:var(--r);padding:13px}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:#d6dde5}
.card figcaption,.card-b{padding:16px}
.card h3{font-size:16px;margin-bottom:6px}
.card p{font-size:14px;color:var(--gray);margin:0}
.card-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg-soft)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-img img{transform:scale(1.05)}
.badge{position:absolute;top:10px;left:10px;background:var(--gold);color:#241c00;font-size:12px;font-weight:700;padding:3px 9px;border-radius:4px}

/* ---------- 痛点/优势 ---------- */
.pain li,.adv-item{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.pain li{border-left:3px solid #d9534f}
.pain li b{display:block;font-size:16px;margin-bottom:6px}
.pain li p{font-size:14px;color:var(--gray);margin:0}
.adv-item{border-left:3px solid var(--gold)}
.adv-item b{display:block;margin-bottom:6px}
.adv-item p{font-size:14px;color:var(--gray);margin:0}
.num{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--gold);color:#241c00;font-size:13px;font-weight:700;margin-right:8px}

/* ---------- 产品 ---------- */
.pro-grid{grid-template-columns:repeat(4,1fr)}
.spec{width:100%;font-size:14px;margin:0}
.spec th,.spec td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.spec th{background:var(--bg-soft);font-weight:600;width:34%;color:var(--gray)}
.spec tr:nth-child(even) td{background:#fcfdfe}
.pro-layout{display:grid;gap:32px;grid-template-columns:minmax(0,1fr) 380px}
.pro-main h2{border-left:4px solid var(--gold);padding-left:12px;font-size:20px;margin-top:36px}
.pro-main h2:first-child{margin-top:0}
.feat li{position:relative;padding-left:26px;margin-bottom:10px;font-size:15px}
.feat li::before{content:"";position:absolute;left:6px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--gold)}
.quote-box{background:var(--bg-soft);border-left:4px solid var(--gold);padding:16px 18px;border-radius:0 var(--r) var(--r) 0;font-size:15px}
.aside-box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;position:sticky;top:88px}
.aside-box+.aside-box{margin-top:20px}
.aside-box h2{font-size:16px;padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:14px}
.form-row{margin-bottom:12px}
.form-row input,.form-row textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;background:#fff}
.form-row input:focus,.form-row textarea:focus{border-color:var(--gold);outline:none}
.form-row textarea{min-height:82px;resize:vertical}
.form-note{font-size:12px;color:var(--gray-lt);margin-top:8px}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:11px 0;color:var(--gray)}
.crumb a:hover{color:var(--gold-dk)}
.crumb li+li::before{content:"/";margin-right:6px;color:#c2cad3}
.crumb li[aria-current]{color:var(--ink);font-weight:600}

/* ---------- 案例/客户 ---------- */
.logo-wall{grid-template-columns:repeat(5,1fr);gap:14px}
.logo-wall li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 10px;text-align:center;font-size:14px;color:var(--gray);transition:.2s}
.logo-wall li:hover{border-color:var(--gold);color:var(--ink)}
.quote{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:#fff}
.quote blockquote{margin:0 0 14px;font-size:15px;color:var(--gray)}
.quote cite{font-style:normal;font-weight:700;font-size:14px}

/* ---------- 流程 ---------- */
.flow{grid-template-columns:repeat(4,1fr);counter-reset:f}
.flow li{position:relative;padding:22px 16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--r);text-align:center}
.flow li::before{counter-increment:f;content:counter(f);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--gold);color:#241c00;font-weight:700;margin-bottom:10px}
.flow li b{display:block;font-size:15px;margin-bottom:4px}
.flow li span{font-size:13px;color:var(--gray)}

/* ---------- 新闻 ---------- */
.news-list li{border-bottom:1px dashed var(--line);padding:14px 0}
.news-list li:first-child{padding-top:0}
.news-list a{display:flex;gap:14px;align-items:flex-start}
.news-date{flex:0 0 62px;text-align:center;background:var(--bg-soft);border-radius:6px;padding:6px 4px}
.news-date b{display:block;font-size:20px;color:var(--gold-dk);line-height:1.1}
.news-date span{font-size:11px;color:var(--gray-lt)}
.news-tx strong{display:block;font-size:15px;margin-bottom:3px}
.news-tx small{color:var(--gray);font-size:13px}
.news-list a:hover strong{color:var(--gold-dk)}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;background:#fff;overflow:hidden}
.faq summary{padding:14px 18px;cursor:pointer;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .faq-b{padding:14px 18px;font-size:14.5px;color:var(--gray)}

/* ---------- CTA 条 ---------- */
.cta-bar{background:linear-gradient(120deg,var(--brand),#123b63);color:#fff;padding:38px 0}
.cta-bar .wrap{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.cta-bar h2{font-size:clamp(19px,3vw,26px);margin:0 0 4px}
.cta-bar p{margin:0;color:#bccbda;font-size:14px}

/* ---------- 表单区 ---------- */
.form-zone{background:var(--bg-soft)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.form-2{display:grid;gap:12px;grid-template-columns:1fr 1fr}
.form-2 .full{grid-column:1/-1}
.info-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:15px}
.info-list li:last-child{border:0}
.info-list b{flex:0 0 72px;color:var(--gray);font-weight:600}

/* ---------- 页脚 ---------- */
.foot{background:var(--bg-dark);color:#97a3b0;font-size:14px;padding:44px 0 0}
.foot .grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:28px}
.foot h2{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.04em}
.foot a{color:#97a3b0}
.foot a:hover{color:var(--gold-lt)}
.foot li{margin-bottom:8px}
.foot-tel{color:var(--gold-lt);font-size:22px;font-weight:700;letter-spacing:.02em;display:block;margin-bottom:6px}
.foot-b{border-top:1px solid #232b34;margin-top:32px;padding:18px 0 26px;font-size:13px;color:#6f7c8a}
.foot-b .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.foot-b a{color:#8e9aa8}

/* 悬浮转化条（移动端） */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:1fr 1fr;gap:0;box-shadow:0 -2px 12px rgba(0,0,0,.12)}
.mbar a{padding:13px 8px;text-align:center;font-weight:700;font-size:15px;color:#fff}
.mbar a:first-child{background:var(--brand)}
.mbar a:last-child{background:linear-gradient(135deg,var(--gold-lt),var(--gold));color:#241c00}

/* 返回顶部 */
#top{position:fixed;right:16px;bottom:78px;z-index:65;width:42px;height:42px;border-radius:50%;border:0;background:rgba(13,42,74,.85);color:#fff;font-size:18px;cursor:pointer;display:none}
#top.show{display:block}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .pro-grid{grid-template-columns:repeat(3,1fr)}
  .g4,.flow{grid-template-columns:repeat(2,1fr)}
  .pro-layout{grid-template-columns:1fr}
  .aside-box{position:static}
  .foot .grid{grid-template-columns:1fr 1fr}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  body{padding-bottom:52px}
  .sec{padding:34px 0}
  .masthead .wrap{min-height:58px}
  .nav-tel{display:none}
  .logo-tx span{display:none}
  .logo img{height:38px}
  .nav-toggle{display:block}
  .nav .wrap{flex-direction:column;align-items:stretch;overflow:hidden;max-height:0;transition:max-height .3s ease;padding:0}
  .nav .wrap.open{max-height:70vh;overflow-y:auto;padding:4px 0}
  .nav .wrap>li>a{padding:12px 4px;border-bottom:1px solid rgba(255,255,255,.1);border-left:0}
  .hero-in{padding:52px 0 44px}
  .hero-stat{gap:18px 26px;margin-top:28px}
  .g2,.g3,.pro-grid{grid-template-columns:1fr}
  .grid.g2,.grid.g3{grid-template-columns:1fr}
  .grid.g4.repeat2{grid-template-columns:repeat(2,1fr)}
  .form-2{grid-template-columns:1fr}
  .cta-bar .wrap{flex-direction:column;align-items:flex-start}
  .spec th{width:42%}
}
@media(max-width:480px){
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .g4,.flow{grid-template-columns:1fr}
  .hero-tags li{font-size:12px;padding:4px 11px}
}
@media print{.masthead,.mbar,#top,.hero-cta,.cta-bar{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}