/* ===== 智华科技官网 全局样式 ===== */
:root{
  --blue:#2563eb;
  --blue-dark:#1e40af;
  --blue-light:#eff4ff;
  --ink:#1f2937;
  --ink-2:#4b5563;
  --ink-3:#6b7280;
  --line:#e5e7eb;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --radius:14px;
  --shadow:0 6px 24px rgba(30,58,138,.08);
  --shadow-lg:0 14px 40px rgba(30,58,138,.12);
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section--soft{background:var(--bg-soft)}
.eyebrow{color:var(--blue);font-weight:700;font-size:14px;letter-spacing:1px;text-transform:uppercase}
.section-title{font-size:30px;font-weight:800;margin:10px 0 12px;letter-spacing:.5px}
.section-sub{color:var(--ink-3);font-size:16px;max-width:680px}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-block;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;transition:.2s;cursor:pointer;border:none}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-outline{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn-outline:hover{background:var(--blue-light)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue),#60a5fa);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px}
.logo>span:last-child{line-height:1.1}
.logo .sub{display:block;font-size:11px;color:var(--ink-3);font-weight:500;letter-spacing:2px;line-height:1;margin-top:2px}
.nav-links{display:flex;gap:6px;align-items:center;list-style:none}
.nav-links a{padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink-2);font-weight:500;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--blue-light)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--ink);cursor:pointer}

/* ===== Hero ===== */
.hero{background:linear-gradient(180deg,#f4f8ff 0%,#ffffff 100%);position:relative;overflow:hidden;padding:72px 0 64px}
.hero:before{content:"";position:absolute;top:-160px;right:-160px;width:520px;height:520px;background:radial-gradient(circle,rgba(37,99,235,.14),transparent 65%);border-radius:50%}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:42px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:41px;line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero h1 .hl{color:var(--blue)}
.hero h1 .nowrap{white-space:nowrap}
.hero p.lead{margin:20px 0 22px;font-size:17px;color:var(--ink-2);max-width:640px}
.hero-services{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:24px}
.hero-services a{display:block;padding:13px 15px;border:1px solid #dbe7ff;border-radius:11px;background:rgba(255,255,255,.82);transition:.2s}
.hero-services a:hover{border-color:#93b4f7;background:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}
.hero-services strong{display:block;color:var(--ink);font-size:14px;line-height:1.4}
.hero-services span{display:block;margin-top:3px;color:var(--ink-3);font-size:12px;line-height:1.5}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{background:#0b1728;border-radius:18px;padding:0;box-shadow:var(--shadow-lg);overflow:hidden}
.hero-visual img{width:100%;height:auto;display:block}
.hero-visual .dot{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:6px}
.hero-visual .bar{margin-bottom:14px}
.code-k{color:#60a5fa}.code-s{color:#34d399}.code-c{color:#64748b}.code-y{color:#fbbf24}

/* ===== Cards grid ===== */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ico{width:52px;height:52px;border-radius:12px;background:var(--blue-light);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.ico svg{width:26px;height:26px;display:block}
.card h3{font-size:19px;margin-bottom:10px;font-weight:700}
.card p{color:var(--ink-3);font-size:15px}
.card ul{margin-top:12px;padding-left:18px;color:var(--ink-3);font-size:14px}
.card ul li{margin-bottom:4px}

/* service scope, cooperation and deliverables */
.engagement{position:relative;overflow:hidden}
.engagement:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.1),transparent 68%);top:-210px;left:-170px}
.engagement-grid{display:grid;grid-template-columns:1fr 1.04fr 1fr;gap:22px;position:relative}
.engagement-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.engagement-card--process{border-color:#bfdbfe;box-shadow:0 14px 40px rgba(37,99,235,.12)}
.engagement-head{display:flex;align-items:center;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.engagement-no{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--blue),#60a5fa);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.engagement-tag{display:block;color:var(--blue);font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;line-height:1.2}
.engagement-head h3{font-size:22px;line-height:1.35;margin-top:3px}
.engagement-intro{color:var(--ink-3);font-size:14px;margin:18px 0 20px}
.engagement-list{display:grid;gap:18px}
.engagement-list>div{display:flex;gap:12px;align-items:flex-start}
.list-ico{width:34px;height:34px;border-radius:9px;background:var(--blue-light);color:var(--blue);font-size:14px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.engagement-list p{line-height:1.45}
.engagement-list strong{display:block;font-size:15px;margin-bottom:5px}
.engagement-list small{display:block;color:var(--ink-3);font-size:13px;line-height:1.65}
.cooperation-flow{list-style:none;display:grid;gap:0;margin:0}
.cooperation-flow li{display:grid;grid-template-columns:32px 1fr;gap:12px;position:relative;padding-bottom:17px}
.cooperation-flow li:not(:last-child):before{content:"";position:absolute;top:29px;bottom:0;left:15px;width:2px;background:#dbeafe}
.cooperation-flow li>span{width:32px;height:32px;border-radius:50%;background:var(--blue-light);border:1px solid #bfdbfe;color:var(--blue);font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}
.cooperation-flow strong{font-size:15px}
.cooperation-flow p{color:var(--ink-3);font-size:13px;line-height:1.6;margin-top:3px}
.engagement-link{margin-top:auto;padding:13px 16px;border-radius:10px;background:var(--blue);color:#fff;font-size:14px;font-weight:700;text-align:center;transition:.2s}
.engagement-link:hover{background:var(--blue-dark);transform:translateY(-2px)}
.engagement-link span{margin-left:4px}
.deliverable-group{margin-bottom:18px}
.deliverable-group h4{font-size:14px;margin-bottom:9px;color:var(--ink-2)}
.deliverable-tags{display:flex;flex-wrap:wrap;gap:7px}
.deliverable-tags span{padding:7px 9px;border-radius:7px;background:var(--blue-light);color:#315a9e;font-size:12px;line-height:1.35}
.deliverable-note{margin-top:auto;padding:12px 14px;border-left:3px solid var(--blue);background:#f8fafc;color:var(--ink-3);font-size:12px;line-height:1.65}

/* feature row */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
.feature:last-child{margin-bottom:0}
.feature.rev .feature-media{order:2}
.feature-media{background:linear-gradient(135deg,#eff4ff,#dbeafe);border-radius:18px;min-height:300px;display:flex;align-items:center;justify-content:center;padding:18px;box-shadow:var(--shadow);overflow:hidden}
.feature-media img{width:100%;height:auto;max-height:300px;display:block}
.feature-media--systems{aspect-ratio:4/3;min-height:0;padding:0;background:#eef4fb}
.feature-media--systems img{width:100%;height:100%;max-height:none;object-fit:cover}
.feature-media--service{aspect-ratio:3/2;min-height:0;padding:0;background:#eef3f9}
.feature-media--service img{width:100%;height:100%;max-height:none;object-fit:cover}
.feature h3{font-size:26px;font-weight:800;margin-bottom:8px}
.feature .tag{color:var(--blue);font-weight:700;font-size:13px;letter-spacing:1px;text-transform:uppercase}
.feature ul{margin-top:18px;list-style:none}
.feature ul li{padding:8px 0 8px 28px;position:relative;color:var(--ink-2)}
.feature ul li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:800;background:var(--blue-light);width:20px;height:20px;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;top:11px}

/* process */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{text-align:center;position:relative}
.step .n{width:54px;height:54px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:var(--ink-3)}
.step:not(:last-child):after{content:"";position:absolute;top:27px;left:62%;width:76%;height:2px;background:linear-gradient(90deg,var(--blue),transparent)}

/* tech stack */
.stack{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.stack span{background:#fff;border:1px solid var(--line);padding:10px 20px;border-radius:30px;font-weight:600;font-size:14px;color:var(--ink-2);transition:.2s}
.stack span:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}

/* stat band */
.statband{background:linear-gradient(135deg,var(--blue-dark),var(--blue));color:#fff;border-radius:18px;padding:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.statband .num{font-size:38px;font-weight:800}
.statband .lbl{opacity:.85;font-size:14px;margin-top:4px}

/* case cards */
.case{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.case:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.case .thumb{height:170px;background:linear-gradient(135deg,#1e3a8a,#2563eb);display:flex;align-items:center;justify-content:center;font-size:54px;color:#fff;overflow:hidden}
.case .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.case .thumb.v2{background:linear-gradient(135deg,#0f766e,#14b8a6)}
.case .thumb.v3{background:linear-gradient(135deg,#7c3aed,#a855f7)}
.case .thumb.v4{background:linear-gradient(135deg,#b45309,#f59e0b)}
.case .thumb.v5{background:linear-gradient(135deg,#be123c,#f43f5e)}
.case .body{display:flex;flex:1;flex-direction:column;padding:22px}
.case .cat{color:var(--blue);font-size:13px;font-weight:700}
.case h3{font-size:18px;margin:6px 0 8px}
.case p{color:var(--ink-3);font-size:14px;margin-bottom:14px}
.case .metrics{display:flex;gap:18px;margin-top:auto;border-top:1px solid var(--line);padding-top:14px}
.case .metrics div span{display:block}
.case .metrics .m{font-weight:800;color:var(--blue);font-size:18px}
.case .metrics .t{font-size:12px;color:var(--ink-3)}

/* news center */
.home-news{border-bottom:1px solid #edf1f7}
.section-heading-row{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-bottom:38px}
.section-heading-row>p,.section-heading-action{max-width:520px;color:var(--ink-3);font-size:15px}
.section-heading-action{text-align:right}
.section-heading-action a,.section-heading-row>a{display:inline-block;margin-top:8px;color:var(--blue);font-weight:700;font-size:14px}
.news-hero{padding-bottom:76px;background:radial-gradient(circle at 78% 24%,rgba(96,165,250,.24),transparent 28%),linear-gradient(135deg,#0b1220,#183b78)}
.news-hero-label{display:inline-block;margin-bottom:9px;color:#93c5fd;font-size:12px;font-weight:800;letter-spacing:2px}
.news-category-nav{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px}
.news-category-nav a{display:flex;align-items:center;gap:9px;padding:9px 14px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(255,255,255,.08);font-size:13px;transition:.2s}
.news-category-nav a:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}
.news-category-nav span{display:flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:#fff;color:var(--blue-dark);font-size:11px;font-weight:800}
.news-featured{padding-bottom:78px}
.news-featured-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:24px}
.news-featured-side{display:grid;gap:24px}
.news-featured-side .news-card{display:grid;grid-template-columns:190px 1fr}
.news-featured-side .news-card-cover{height:100%;min-height:210px}
.news-featured-side .news-card-body{padding:20px}
.news-featured-side .news-card h3{font-size:18px}
.news-featured-side .news-card p{display:none}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;min-width:0;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.25s}
.news-card:hover{transform:translateY(-4px);border-color:#cbdcfb;box-shadow:var(--shadow-lg)}
.news-card-cover{display:block;height:205px;overflow:hidden;background:#dce7f4}
.news-card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-card-cover img{transform:scale(1.025)}
.news-card-body{display:flex;flex:1;flex-direction:column;padding:24px}
.news-card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;font-size:12px}
.news-card-meta span{color:var(--blue);font-weight:800}
.news-card-meta time{color:var(--ink-3)}
.news-card h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.news-card h3 a:hover{color:var(--blue)}
.news-card p{color:var(--ink-3);font-size:14px;line-height:1.75}
.news-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px;color:var(--ink-3);font-size:12px}
.news-card-foot a{color:var(--blue);font-weight:700}
.news-card-foot b{font-size:15px}
.news-card--featured .news-card-cover{height:330px}
.news-card--featured .news-card-body{padding:28px}
.news-card--featured h3{font-size:25px}
.news-section-head{display:grid;grid-template-columns:.75fr 1.25fr;align-items:end;gap:40px;margin-bottom:34px}
.news-section-head h2{margin-top:7px;font-size:29px}
.news-section-head p{color:var(--ink-3);font-size:15px}
.news-list-section{scroll-margin-top:68px}

/* article pages */
.article-page{background:#fff}
.article-header{padding:62px 0 48px;background:linear-gradient(180deg,#f4f8ff 0%,#fff 100%)}
.article-header-inner{max-width:920px}
.article-header .crumb{color:var(--ink-3);opacity:1}
.article-header .crumb a:hover{color:var(--blue)}
.article-category{display:inline-block;margin-top:12px;padding:6px 12px;border-radius:999px;background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:800}
.article-header h1{max-width:880px;margin:18px 0 18px;font-size:42px;line-height:1.28;letter-spacing:.2px}
.article-lead{max-width:840px;color:var(--ink-2);font-size:18px;line-height:1.9}
.article-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:22px;color:var(--ink-3);font-size:13px}
.article-cover{max-width:1040px}
.article-cover img{width:100%;aspect-ratio:16/8.4;object-fit:cover;border-radius:18px;box-shadow:var(--shadow-lg)}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;justify-content:center;gap:64px;padding-top:56px;padding-bottom:82px}
.article-content{min-width:0}
.article-content>section{scroll-margin-top:92px;margin-bottom:45px}
.article-content h2{font-size:26px;line-height:1.45;margin-bottom:18px}
.article-content p{margin-bottom:16px;color:#374151;font-size:16px;line-height:2}
.article-content ul{margin:18px 0 0;padding:18px 22px 18px 46px;border-radius:12px;background:#f5f8fd;color:var(--ink-2)}
.article-content li{padding:5px 0;line-height:1.8}
.article-aside{position:relative}
.article-toc{position:sticky;top:92px;display:grid;padding:21px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
.article-toc>strong{margin-bottom:13px;font-size:15px}
.article-toc a{display:grid;grid-template-columns:28px 1fr;gap:8px;padding:9px 0;border-top:1px solid #eef2f7;color:var(--ink-3);font-size:12px;line-height:1.55}
.article-toc a:hover{color:var(--blue)}
.article-toc a span{color:#94a3b8;font-weight:700}
.article-aside-note{margin-top:18px;padding:18px;border-radius:13px;background:#0f2d61;color:#fff}
.article-aside-note strong{font-size:14px}
.article-aside-note p{margin-top:7px;color:#c9d8f2;font-size:12px;line-height:1.7}
.article-takeaways{margin:52px 0 32px;padding:30px;border:1px solid #bfdbfe;border-radius:16px;background:linear-gradient(145deg,#f7faff,#edf4ff)}
.article-takeaways>span{color:var(--blue);font-size:12px;font-weight:800;letter-spacing:1px}
.article-takeaways h2{margin:7px 0 12px;font-size:22px}
.article-takeaways ul{margin:0;padding:0 0 0 22px;background:none}
.article-service-cta{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:32px;border-radius:17px;background:#101f3b;color:#fff}
.article-service-cta span{color:#93c5fd;font-size:12px;font-weight:800}
.article-service-cta h2{margin:6px 0 7px;font-size:22px}
.article-service-cta p{max-width:520px;margin:0;color:#cbd5e1;font-size:13px;line-height:1.7}
.article-service-cta .btn{flex-shrink:0}
.article-related .section-heading-row{align-items:center}

/* cta band */
.cta-band{background:linear-gradient(135deg,#0f172a,#1e3a8a);color:#fff;text-align:center;padding:64px 24px;border-radius:20px}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:12px}
.cta-band p{opacity:.85;margin-bottom:26px;font-size:17px}

/* page hero (inner) */
.page-hero{background:linear-gradient(135deg,#0f172a,#1e3a8a);color:#fff;padding:64px 0;text-align:center}
.page-hero h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-hero p{opacity:.85;max-width:680px;margin:0 auto;font-size:17px}
.crumb{font-size:13px;opacity:.7;margin-bottom:14px}
.crumb a:hover{text-decoration:underline}

/* contact */
.contact-section{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}
.contact-heading{margin-bottom:42px}
.wechat-contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;max-width:1080px;margin:0 auto}
.wechat-card{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:28px;align-items:center;padding:34px;background:#fff;border:1px solid #dfe8f5;border-radius:18px;box-shadow:0 12px 34px rgba(30,58,138,.08)}
.wechat-type{display:inline-flex;padding:5px 11px;border-radius:999px;background:var(--blue-light);color:var(--blue-dark);font-size:12px;font-weight:700;letter-spacing:.5px}
.wechat-card h3{font-size:22px;margin:12px 0 8px}
.wechat-card-copy>p{color:var(--ink-2);font-size:15px}
.wechat-topics{list-style:none;margin-top:18px}
.wechat-topics li{position:relative;padding:5px 0 5px 20px;color:var(--ink-3);font-size:14px}
.wechat-topics li:before{content:"";position:absolute;left:1px;top:14px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.wechat-qr-wrap{text-align:center}
.wechat-qr-wrap img{width:172px;height:172px;object-fit:contain;margin:0 auto 12px;border:1px solid var(--line);border-radius:12px;background:#fff}
.wechat-qr-wrap strong{display:block;font-size:15px}
.wechat-qr-wrap span{display:block;margin-top:3px;color:var(--ink-3);font-size:12px;white-space:nowrap}
.contact-note{display:flex;align-items:flex-start;justify-content:center;gap:9px;max-width:800px;margin:30px auto 0;padding:15px 20px;border:1px solid #dbe7ff;border-radius:12px;background:#f4f8ff;color:var(--ink-2);font-size:14px}
.contact-note svg{width:19px;height:19px;flex-shrink:0;margin-top:2px;fill:none;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* floating WeChat consultation */
.wechat-float{position:fixed;right:18px;top:50%;z-index:90;transform:translateY(-46%)}
.wechat-float-panel{width:218px;padding:16px;background:rgba(255,255,255,.97);border:1px solid #dbe7ff;border-radius:18px;box-shadow:0 18px 50px rgba(15,23,42,.18);backdrop-filter:blur(12px)}
.wechat-float-head{display:flex;align-items:flex-start;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line)}
.wechat-float-head strong{display:block;font-size:17px}
.wechat-float-head span{display:block;color:var(--ink-3);font-size:12px}
.wechat-float-close{width:28px;height:28px;border:0;border-radius:8px;background:var(--bg-soft);color:var(--ink-3);font-size:22px;line-height:1;cursor:pointer;transition:.2s}
.wechat-float-close:hover{background:var(--blue-light);color:var(--blue)}
.wechat-float-advisors{display:grid;gap:12px;margin-top:13px}
.wechat-float-advisor{padding:11px;border:1px solid #edf1f7;border-radius:12px;background:#fff;text-align:center}
.wechat-float-title{display:flex;align-items:center;gap:8px;margin-bottom:9px;text-align:left}
.wechat-float-title>span{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px #dcfce7;flex-shrink:0}
.wechat-float-title strong{display:block;font-size:14px;line-height:1.35}
.wechat-float-title small{display:block;color:var(--ink-3);font-size:10px;line-height:1.4}
.wechat-float-advisor img{width:132px;height:132px;object-fit:contain;margin:0 auto;border-radius:8px;background:#fff}
.wechat-float-note{margin-top:12px;color:var(--ink-3);font-size:11px;text-align:center;line-height:1.55}
.wechat-float-link{display:block;margin-top:10px;padding:9px 10px;border-radius:9px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;text-align:center;transition:.2s}
.wechat-float-link:hover{background:var(--blue-dark)}
.wechat-float-trigger{display:none;width:62px;padding:12px 7px;border:1px solid #bfdbfe;border-radius:14px;background:linear-gradient(160deg,#2563eb,#4f7cf1);box-shadow:0 12px 32px rgba(37,99,235,.25);color:#fff;text-align:center;cursor:pointer}
.wechat-float-trigger svg{width:28px;height:28px;margin:0 auto 6px;fill:#fff}
.wechat-float-trigger span,.wechat-float-trigger small{display:block}
.wechat-float-trigger span{font-size:13px;font-weight:800}
.wechat-float-trigger small{margin-top:2px;font-size:10px;opacity:.8}
.wechat-float.is-collapsed .wechat-float-panel{display:none}
.wechat-float.is-collapsed .wechat-float-trigger{display:block}

/* timeline */
.timeline{max-width:980px;border-left:2px solid #dbe7ff;margin:0 auto;padding-left:40px}
.tl-item{position:relative;margin-bottom:24px;padding:26px 30px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 26px rgba(30,58,138,.06)}
.tl-item:last-child{margin-bottom:0}
.tl-item:before{content:"";position:absolute;left:-50px;top:30px;width:16px;height:16px;border-radius:50%;background:var(--blue);border:3px solid #fff;box-shadow:0 0 0 2px var(--blue)}
.tl-head{display:flex;align-items:center;gap:12px;margin-bottom:9px}
.tl-item .yr{font-weight:800;color:var(--blue);font-size:20px;line-height:1}
.tl-stage{display:inline-flex;align-items:center;min-height:26px;padding:3px 10px;border-radius:999px;background:var(--blue-light);color:var(--blue-dark);font-size:12px;font-weight:700;letter-spacing:.5px}
.tl-item h3{font-size:20px;line-height:1.45;margin-bottom:9px}
.tl-item p{color:var(--ink-2);font-size:15px;margin:0}
.tl-capability{display:flex;align-items:flex-start;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid #edf1f7;color:var(--ink-3);font-size:14px}
.tl-capability b{flex-shrink:0;color:var(--ink);font-size:13px}

/* ===== Footer ===== */
.site-footer{background:#0f172a;color:#94a3b8;padding:56px 0 24px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-grid a{display:block;padding:5px 0;color:#94a3b8;transition:.2s}
.foot-grid a:hover{color:#fff}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{max-width:300px;line-height:1.8}
.foot-tags{border-top:1px solid #1e293b;padding-top:18px;margin-bottom:18px;color:#64748b;font-size:12.5px;line-height:1.9}
.foot-tags b{color:#94a3b8;font-weight:600}
.foot-bottom{border-top:1px solid #1e293b;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px}
.foot-bottom a:hover{color:#fff}

/* responsive */
@media(max-width:920px){
  .hero-grid,.feature,.feature.rev .feature-media,.engagement-grid,.news-featured-grid,.article-layout{grid-template-columns:1fr}
  .feature.rev .feature-media{order:0}
  .engagement-card{padding:26px}
  .wechat-contact-grid{grid-template-columns:1fr;max-width:650px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-featured-side{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-featured-side .news-card{display:flex}
  .news-featured-side .news-card-cover{height:190px;min-height:0}
  .article-layout{max-width:800px;gap:24px}
  .article-aside{order:-1}
  .article-toc{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-toc>strong{grid-column:1/-1}
  .article-aside-note{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:after{display:none}
  .statband{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px;gap:2px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 14px}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .wechat-float{top:auto;right:14px;bottom:16px;z-index:120;transform:none}
  .wechat-float-panel{display:none;position:fixed;left:12px;right:12px;bottom:76px;width:auto;max-height:calc(100vh - 96px);overflow:auto;padding:16px}
  .wechat-float-trigger{display:flex;width:auto;padding:10px 14px;align-items:center;gap:8px;text-align:left}
  .wechat-float-trigger svg{width:25px;height:25px;margin:0}
  .wechat-float-trigger span{font-size:13px}
  .wechat-float-trigger small{margin:0;font-size:10px}
  .wechat-float.is-open .wechat-float-panel{display:block}
  .wechat-float.is-open .wechat-float-trigger{display:none}
  .wechat-float-advisors{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wechat-float-advisor img{width:128px;height:128px;max-width:100%}
}
@media(max-width:560px){
  .hero h1{font-size:32px}
  .hero h1 .nowrap{white-space:normal}
  .hero{padding:56px 0 50px}
  .hero-services{grid-template-columns:1fr}
  .section-title{font-size:25px}
  .grid-4,.grid-3,.grid-2,.steps,.statband,.news-grid,.news-featured-side,.news-section-head{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-heading-row{display:block;margin-bottom:28px}
  .section-heading-row>p,.section-heading-action{max-width:none;margin-top:10px;text-align:left}
  .news-hero{padding-bottom:56px}
  .news-category-nav{justify-content:flex-start}
  .news-card-cover,.news-card--featured .news-card-cover{height:210px}
  .news-card--featured .news-card-body{padding:22px}
  .news-card--featured h3{font-size:21px}
  .news-section-head{gap:10px}
  .news-section-head h2{font-size:25px}
  .article-header{padding:46px 0 34px}
  .article-header h1{font-size:31px}
  .article-lead{font-size:16px}
  .article-cover img{border-radius:12px}
  .article-layout{padding-top:38px;padding-bottom:56px}
  .article-toc{grid-template-columns:1fr}
  .article-content h2{font-size:23px}
  .article-content p{font-size:15px}
  .article-takeaways,.article-service-cta{padding:24px 21px}
  .article-service-cta{display:block}
  .article-service-cta .btn{margin-top:18px}
  .statband{padding:30px}
  .engagement-card{padding:22px}
  .engagement-head h3{font-size:20px}
  .contact-heading{margin-bottom:30px}
  .wechat-card{grid-template-columns:1fr;padding:26px 22px;gap:24px}
  .wechat-card-copy{text-align:center}
  .wechat-topics{display:inline-block;text-align:left;margin-top:14px}
  .wechat-qr-wrap img{width:184px;height:184px}
  .contact-note{text-align:left}
  .timeline{margin-left:8px;padding-left:24px}
  .tl-item{padding:22px 20px}
  .tl-item:before{left:-34px;top:27px}
  .tl-item h3{font-size:18px}
  .tl-capability{display:block}
  .tl-capability b{display:block;margin-bottom:3px}
  .wechat-float-panel{padding:14px}
  .wechat-float-advisor{padding:9px}
  .wechat-float-advisor img{width:120px;height:120px}
  .wechat-float-title small{font-size:9px}
}