/* ============================================================
   铭商互联 · 公司官网公共样式  site.css
   湖北铭商互联科技有限公司 · 商务蓝 #1677FF · PC / H5 / 微信 三端
   ============================================================ */
:root{
  --blue:#1677FF; --blue-3:#4096FF; --blue-deep:#0958D9; --blue-dark:#003EB3;
  --blue-soft:#EAF3FF; --blue-soft2:#F4F9FF; --blue-line:#CDE1FF;
  --indigo:#5B7BFF;
  --ink:#16203A; --ink2:#44506A; --ink3:#7A8499;
  --line:#E4EAF3; --line2:#EEF2F8;
  --bg:#FFFFFF; --bg2:#F6F9FE; --bg3:#EEF4FE;
  --radius:16px; --radius-lg:22px;
  --shadow-sm:0 1px 3px rgba(17,24,39,.05),0 2px 10px rgba(17,24,39,.05);
  --shadow:0 12px 30px rgba(22,59,110,.12);
  --shadow-lg:0 24px 64px rgba(16,60,140,.14);
  --shadow-blue:0 6px 18px rgba(22,119,255,.22);
  --nav-h:68px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,"Noto Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:74px 0}
.section.alt{background:var(--bg2)}
.section.tight{padding:56px 0}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:11px;font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .2s;white-space:nowrap;line-height:1}
.btn-primary{background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;box-shadow:var(--shadow-blue)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(22,119,255,.34)}
.btn-ghost{background:#fff;color:var(--blue-deep);border-color:#BCD6FF}
.btn-ghost:hover{background:var(--blue-soft);border-color:var(--blue)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--blue-dark)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-lg{height:54px;padding:0 34px;font-size:17px;border-radius:12px}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- 通用区块标题 ---------- */
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-head .tag{display:inline-block;color:var(--blue-deep);font-size:13px;font-weight:700;letter-spacing:3px;background:var(--blue-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:32px;font-weight:800;letter-spacing:.5px;margin-bottom:12px}
.sec-head p{color:var(--ink2);font-size:16px}
.sec-head.left{text-align:left;margin-left:0}

/* ---------- 顶部导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:44px;width:auto;display:block}
.brand-txt{font-size:19px;font-weight:800;letter-spacing:1px;color:var(--ink);line-height:1.15}
.brand-txt small{display:block;font-size:9.5px;font-weight:600;color:var(--ink3);letter-spacing:2.5px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a.link{font-size:15px;color:var(--ink2);font-weight:500;position:relative;padding:4px 0}
.nav-links a.link:hover{color:var(--blue)}
.nav-links a.link.active{color:var(--blue-deep);font-weight:700}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px;stroke:var(--ink)}

/* ---------- 首页 Hero 轮播 ---------- */
.hero{position:relative;background:linear-gradient(180deg,#EAF3FF 0%,#F4F8FF 58%,#fff 100%);overflow:hidden}
.hero::before{content:"";position:absolute;top:-200px;right:-140px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(22,119,255,.14),transparent 70%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-160px;left:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(91,123,255,.10),transparent 70%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:44px;align-items:center;padding:70px 0 66px}
.hero-carousel{position:relative;overflow:visible;min-width:0}
.hero-viewport{overflow:hidden;width:100%;min-width:0}
.hero-track{display:flex;transition:transform .55s cubic-bezier(.22,.61,.36,1)}
.hero-slide{flex:0 0 100%;min-width:100%;padding:2px 6px}
.hero-slide .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--blue-line);color:var(--blue-deep);font-size:13px;font-weight:600;padding:7px 15px;border-radius:999px;box-shadow:var(--shadow-sm)}
.hero-slide h1{font-size:46px;line-height:1.18;font-weight:800;letter-spacing:1px;margin:22px 0 14px}
.hero-slide h1 .hl{background:linear-gradient(120deg,var(--blue),var(--indigo));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-slide .firm{font-size:17px;font-weight:700;color:var(--blue-dark);margin-bottom:14px;letter-spacing:.5px}
.hero-slide .lead{font-size:16.5px;color:var(--ink2);max-width:540px;line-height:1.75}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:1px solid var(--blue-line);background:#fff;color:var(--blue-deep);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);z-index:5;transition:all .2s}
.hero-arrow:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.hero-arrow.prev{left:-18px}.hero-arrow.next{right:-18px}
.hero-arrow svg{width:22px;height:22px}
.hero-dots{display:flex;gap:9px;margin-top:30px}
.hero-dot{width:9px;height:9px;border-radius:50%;background:#C4D6F5;cursor:pointer;border:none;padding:0;transition:all .25s}
.hero-dot.on{width:26px;border-radius:6px;background:linear-gradient(90deg,var(--blue),var(--indigo))}
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-panel{background:#fff;border-radius:26px;padding:34px 30px;box-shadow:var(--shadow);border:1px solid #E7F0FF;width:100%;max-width:400px}
.hero-panel .biglogo{width:132px;height:132px;margin:0 auto 16px}
.hero-panel .hp-name{text-align:center;font-size:22px;font-weight:800;color:var(--blue-dark);letter-spacing:1px}
.hero-panel .hp-sub{text-align:center;font-size:12px;color:var(--ink3);letter-spacing:4px;margin:3px 0 22px}
.hero-panel .hp-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center;padding:18px 0;border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}
.hero-panel .hp-stats b{display:block;font-size:22px;font-weight:800;color:var(--blue-deep)}
.hero-panel .hp-stats small{font-size:11.5px;color:var(--ink3)}
.hero-panel .hp-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:20px}
.hero-panel .hp-tags span{font-size:12px;color:var(--ink2);background:var(--bg2);border:1px solid var(--line);padding:5px 11px;border-radius:8px}

/* ---------- 信任 / 数据条 ---------- */
.trust{background:#fff;border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:28px 0}
.trust-item{display:flex;align-items:center;gap:13px;justify-content:center}
.trust-item .ic{width:44px;height:44px;flex:none;border-radius:12px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(22,119,255,.22)}
.trust-item .ic svg{width:23px;height:23px}
.trust-item b{display:block;font-size:15px;font-weight:700}
.trust-item small{font-size:12px;color:var(--ink3)}

/* ---------- 产品卡片 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prod-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;display:flex;flex-direction:column;transition:all .25s;box-shadow:var(--shadow-sm);overflow:hidden}
.prod-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--indigo));opacity:0;transition:opacity .25s}
.prod-card:hover{transform:translateY(-6px);border-color:#AECFFF;box-shadow:var(--shadow)}
.prod-card:hover::before{opacity:1}
.prod-top{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.prod-logo{width:54px;height:54px;flex:none;border-radius:14px;background:linear-gradient(135deg,var(--blue-3),var(--blue));display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 4px 12px rgba(22,119,255,.24)}
.prod-logo img{width:46px;height:46px}
.prod-logo .pi{width:28px;height:28px;color:#fff}
.prod-top h3{font-size:20px;font-weight:800;line-height:1.2}
.prod-top .domain{font-size:12px;color:var(--ink3);margin-top:2px}
.prod-badge{position:absolute;top:24px;right:24px;font-size:11px;font-weight:700;color:var(--blue-deep);background:var(--blue-soft);padding:3px 9px;border-radius:6px}
.prod-badge.soon{color:#a8740a;background:#FFF7E6}
.prod-card .desc{font-size:14.5px;color:var(--ink2);margin-bottom:18px;line-height:1.7}
.prod-feats{margin-bottom:22px;display:flex;flex-direction:column;gap:10px}
.prod-feats li{font-size:13.5px;color:var(--ink2);display:flex;gap:9px;align-items:flex-start}
.prod-feats svg{width:16px;height:16px;flex:none;margin-top:4px;color:var(--blue)}
.prod-card .go{margin-top:auto;display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;font-size:14px}
.prod-card .go svg{width:15px;height:15px;transition:transform .2s}
.prod-card:hover .go svg{transform:translateX(3px)}
/* 更多产品横条 */
.more-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:920px;margin:34px auto 0}
.more-card{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line2);border-radius:14px;padding:22px 24px;box-shadow:var(--shadow-sm);transition:all .22s}
.more-card:hover{transform:translateY(-3px);border-color:#AECFFF;box-shadow:var(--shadow)}
.more-card .mc-ic{width:48px;height:48px;flex:none;border-radius:12px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(22,119,255,.22)}
.more-card .mc-ic svg{width:25px;height:25px}
.more-card h4{font-size:16.5px;font-weight:700}
.more-card p{font-size:13px;color:var(--ink3);margin-top:2px}

/* ---------- 服务能力 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-sm);transition:all .22s}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#C7DAFA}
.svc-card .ic{width:48px;height:48px;border-radius:13px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:15px;box-shadow:0 4px 12px rgba(22,119,255,.22)}
.svc-card .ic svg{width:25px;height:25px}
.svc-card h4{font-size:16.5px;font-weight:700;margin-bottom:7px}
.svc-card p{font-size:13px;color:var(--ink3);line-height:1.6}
.svc-note{text-align:center;margin-top:36px;font-size:14.5px;color:var(--ink2)}
.svc-note b{color:var(--blue-deep)}

/* ---------- 解决方案 / 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm)}
.scene-card .num{font-size:14px;font-weight:800;color:var(--blue);letter-spacing:2px}
.scene-card h4{font-size:19px;font-weight:800;margin:10px 0 12px}
.scene-card p{font-size:14px;color:var(--ink2);margin-bottom:16px;line-height:1.7}
.scene-card ul{display:flex;flex-direction:column;gap:9px}
.scene-card li{font-size:13.5px;color:var(--ink2);padding-left:22px;position:relative}
.scene-card li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--blue)}

/* ---------- 优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.adv{text-align:center;padding:8px 6px}
.adv .ic{width:60px;height:60px;margin:0 auto 16px;border-radius:16px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 5px 14px rgba(22,119,255,.22)}
.adv .ic svg{width:30px;height:30px}
.adv h4{font-size:17px;font-weight:700;margin-bottom:8px}
.adv p{font-size:13.5px;color:var(--ink3);line-height:1.6}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}
.about-txt p{font-size:15.5px;color:var(--ink2);margin-bottom:16px;line-height:1.85}
.about-txt .lead-q{font-size:18px;font-weight:700;color:var(--blue-dark);line-height:1.7;margin-bottom:20px}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.stat{background:linear-gradient(160deg,#fff,var(--blue-soft2));border:1px solid #E0ECFF;border-radius:14px;padding:20px 10px;text-align:center}
.stat b{display:block;font-size:26px;font-weight:800;color:var(--blue-dark)}
.stat small{font-size:12px;color:var(--ink3)}
.about-visual{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.about-visual img{width:100%;border-radius:12px}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:10px}
.value-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow-sm)}
.value-card h4{font-size:16.5px;font-weight:700;color:var(--blue-dark);margin-bottom:8px}
.value-card p{font-size:13.5px;color:var(--ink2);line-height:1.65}

/* ---------- 内页头 ---------- */
.page-hero{background:linear-gradient(180deg,#EAF3FF,#F6F9FE);border-bottom:1px solid var(--line);padding:56px 0 48px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-120px;right:-80px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(22,119,255,.12),transparent 70%)}
.crumb{font-size:13px;color:var(--ink3);margin-bottom:16px;position:relative}
.crumb a:hover{color:var(--blue)}
.crumb span{margin:0 8px;color:#C0C9D8}
.page-hero h1{font-size:36px;font-weight:800;letter-spacing:.5px;margin-bottom:14px;position:relative}
.page-hero .sub{font-size:16.5px;color:var(--ink2);max-width:760px;position:relative;line-height:1.8}

/* ---------- 产品详情 ---------- */
.pd-head{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.pd-badge{display:inline-block;font-size:13px;font-weight:700;color:var(--blue-deep);background:var(--blue-soft);padding:5px 14px;border-radius:999px;margin-bottom:16px}
.pd-head h1{font-size:34px;font-weight:800;margin-bottom:12px}
.pd-head .tagline{font-size:18px;color:var(--blue-dark);font-weight:600;margin-bottom:18px}
.pd-head .doc{font-size:15px;color:var(--ink2);line-height:1.85;margin-bottom:24px}
.pd-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow)}
.pd-side .ps-row{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:12px 0;border-bottom:1px solid var(--line2)}
.pd-side .ps-row:last-of-type{border-bottom:none}
.pd-side .ps-row span{color:var(--ink3)}
.pd-side .ps-row b{font-weight:600;text-align:right}
.pd-side .btn{width:100%;margin-top:18px}
.mod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.mod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 22px;box-shadow:var(--shadow-sm);transition:all .22s}
.mod-card:hover{box-shadow:var(--shadow);border-color:#C7DAFA}
.mod-card .mt{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.mod-card .mt .ic{width:42px;height:42px;flex:none;border-radius:11px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(22,119,255,.22)}
.mod-card .mt .ic svg{width:22px;height:22px}
.mod-card .mt h3{font-size:18px;font-weight:800}
.mod-card ul{display:flex;flex-direction:column;gap:13px}
.mod-card li{display:flex;gap:11px}
.mod-card li b{display:block;font-size:14.5px;font-weight:700;margin-bottom:2px}
.mod-card li p{font-size:13px;color:var(--ink3);line-height:1.6}
.mod-card li .dot{width:7px;height:7px;flex:none;border-radius:50%;background:var(--blue);margin-top:7px}
.feat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feat-strip .f{background:var(--blue-soft2);border:1px solid #E0ECFF;border-radius:13px;padding:20px;display:flex;gap:12px;align-items:flex-start}
.feat-strip .f svg{width:20px;height:20px;flex:none;color:var(--blue);margin-top:2px}
.feat-strip .f b{font-size:14px;font-weight:600;line-height:1.55}
.scene-tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.scene-tags span{background:#fff;border:1px solid var(--blue-line);color:var(--blue-deep);font-size:14px;font-weight:600;padding:10px 22px;border-radius:999px}

/* ---------- 步骤 / 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative;box-shadow:var(--shadow-sm)}
.step .n{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;box-shadow:0 4px 12px rgba(22,119,255,.22)}
.step h4{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--ink3);line-height:1.65}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq{border:1px solid var(--line);border-radius:13px;margin-bottom:14px;background:#fff;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:20px 24px;font-size:15.5px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{flex:none;width:26px;height:26px;border-radius:50%;background:var(--blue-soft);color:var(--blue-deep);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;transition:transform .2s}
.faq[open] summary .pm{transform:rotate(45deg)}
.faq .ans{padding:0 24px 20px;font-size:14.5px;color:var(--ink2);line-height:1.8}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm)}
.contact-card h3{font-size:19px;font-weight:800;margin-bottom:20px}
.c-row{display:flex;gap:14px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line2)}
.c-row:last-child{border-bottom:none}
.c-row .ic{width:42px;height:42px;flex:none;border-radius:11px;background:linear-gradient(135deg,var(--blue-3),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(22,119,255,.22)}
.c-row .ic svg{width:22px;height:22px}
.c-row b{display:block;font-size:15px;font-weight:700;margin-bottom:3px}
.c-row p{font-size:14px;color:var(--ink3);line-height:1.6}
.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.qr-box{text-align:center;border:1px solid var(--line);border-radius:14px;padding:22px 16px}
.qr-box img{width:100%;max-width:180px;margin:0 auto 12px;border-radius:10px;border:1px solid var(--line2)}
.qr-box b{display:block;font-size:14.5px;font-weight:700}
.qr-box small{font-size:12px;color:var(--ink3)}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(135deg,#0E5BE0,#1677FF 55%,#3D8BFF);border-radius:var(--radius-lg);padding:52px 48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.cta-band h2{font-size:28px;font-weight:800;margin-bottom:12px}
.cta-band p{font-size:15.5px;color:#DCEBFF;max-width:560px;line-height:1.7}
.cta-band .btn{background:#fff;color:var(--blue-deep);height:52px;padding:0 34px;font-size:16px}
.cta-band .btn:hover{background:#F0F6FF}

/* ---------- 页脚 ---------- */
.footer{background:#0E1830;color:#AEB9CC;padding:58px 0 26px}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:34px}
.f-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.f-brand img{width:38px;height:38px}
.f-brand b{color:#fff;font-size:18px}
.f-col p{font-size:13.5px;line-height:1.85;margin-bottom:8px}
.f-col h5{color:#fff;font-size:15px;margin-bottom:16px}
.f-col ul{display:flex;flex-direction:column;gap:11px}
.f-col li a{font-size:13.5px;color:#AEB9CC}
.f-col li a:hover{color:#fff}
.f-qr{display:flex;gap:14px;margin-top:4px}
.f-qr .q{text-align:center}
.f-qr img{width:84px;height:84px;border-radius:8px;border:1px solid #233050;background:#fff;padding:3px}
.f-qr small{display:block;font-size:11px;color:#8A97B3;margin-top:6px}
.f-bottom{border-top:1px solid #1E2A45;margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#7E8AA3}
.f-bottom a{color:#9FB4D8}
.f-bottom .building{color:#9FB4D8}

/* ---------- 动画 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.reveal{animation:fadeUp .6s ease both}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{animation:none}}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:26px;padding:40px 0 34px}
  .hero-visual{order:2}
  .hero-slide{padding:2px 0}
  .pd-head{grid-template-columns:1fr;gap:28px}
  .about-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:6px 22px 18px;box-shadow:0 16px 28px rgba(0,0,0,.08);opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;transition:opacity .24s ease,transform .24s ease,visibility .24s}
  .nav-links.open{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-links a.link{width:100%;padding:14px 0;border-bottom:1px solid var(--line2);font-size:15px}
  .nav-links .btn{margin-top:14px;width:100%}
  .nav-toggle{display:block;background:#f1f5fc;border:1px solid #dce5f2;border-radius:10px;padding:8px 10px}
  .brand img{height:36px}
  .section{padding:46px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:26px}
  .hero-slide h1{font-size:33px;margin:16px 0 10px}
  .hero-slide .firm{margin-bottom:10px}
  .hero-slide .lead{font-size:15.5px;line-height:1.7}
  .hero-cta{margin-top:22px}
  .prod-grid{grid-template-columns:1fr;gap:16px}
  .svc-grid{grid-template-columns:repeat(2,1fr);gap:13px}
  .scene-grid{grid-template-columns:1fr;gap:16px}
  .adv-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .value-grid{grid-template-columns:1fr 1fr;gap:14px}
  .mod-grid{grid-template-columns:1fr;gap:14px}
  .feat-strip{grid-template-columns:1fr;gap:12px}
  .steps{grid-template-columns:1fr 1fr;gap:14px}
  .contact-grid{grid-template-columns:1fr;gap:18px}
  .trust-grid{grid-template-columns:1fr 1fr;gap:18px}
  .f-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:38px 28px;flex-direction:column;align-items:flex-start;text-align:left}
  .cta-band h2{font-size:23px}
  .page-hero h1{font-size:28px}
  .pd-head h1{font-size:28px}
  .about-stats{grid-template-columns:1fr 1fr;gap:12px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .brand img{height:32px}
  /* 区块与标题 */
  .section{padding:38px 0}
  .section.tight{padding:32px 0}
  .sec-head{margin-bottom:22px}
  .sec-head .tag{margin-bottom:9px;padding:4px 12px;font-size:12px}
  .sec-head h2{font-size:23px;margin-bottom:8px}
  .sec-head p{font-size:14px;line-height:1.6}
  /* 首屏 */
  .hero-grid{padding:32px 0 28px;gap:20px}
  .hero-slide h1{font-size:26px;margin:12px 0 8px}
  .hero-slide .lead{font-size:14.5px;line-height:1.65}
  .hero-slide .firm{margin-bottom:8px}
  .hero-cta{margin-top:18px}
  .hero-panel{padding:20px 16px;border-radius:18px}
  .hero-panel .biglogo{width:84px;height:84px;margin-bottom:8px}
  .hero-panel .hp-name{font-size:19px}
  .hero-panel .hp-sub{margin:2px 0 12px}
  .hero-panel .hp-stats{padding:12px 0}
  .hero-panel .hp-stats b{font-size:19px}
  .hero-panel .hp-tags{margin-top:12px}
  /* 信任条 */
  .trust-grid{gap:14px 8px;padding:18px 0}
  .trust-item{gap:9px}
  .trust-item .ic{width:38px;height:38px;border-radius:10px}
  .trust-item .ic svg{width:19px;height:19px}
  .trust-item b{font-size:13.5px}
  .trust-item small{font-size:11px}
  /* 产品卡 */
  .prod-grid{gap:14px}
  .prod-card{padding:20px 18px}
  .prod-top{margin-bottom:10px;gap:11px}
  .prod-logo{width:46px;height:46px;border-radius:12px}
  .prod-logo img{width:38px;height:38px}
  .prod-top h3{font-size:18px}
  .prod-badge{top:16px;right:16px}
  .prod-card .desc{font-size:13.5px;margin-bottom:11px;line-height:1.6}
  .prod-feats{margin-bottom:12px;gap:6px}
  .prod-feats li{font-size:13px;line-height:1.45}
  .more-grid{grid-template-columns:1fr;gap:12px;margin-top:20px}
  .more-card{padding:14px 16px;gap:12px}
  .more-card .mc-ic{width:42px;height:42px}
  /* 解决方案 */
  .scene-grid{gap:14px}
  .scene-card{padding:20px 18px}
  .scene-card h4{font-size:17px;margin:6px 0 8px}
  .scene-card p{font-size:13.5px;margin-bottom:10px;line-height:1.6}
  .scene-card ul{gap:6px}
  .scene-card li{font-size:13px;line-height:1.45}
  /* 在线服务/优势/价值 两列饱满 */
  .svc-grid{grid-template-columns:1fr 1fr;gap:11px}
  .svc-card{padding:18px 15px;text-align:center}
  .svc-card .ic{width:42px;height:42px;margin:0 auto 10px;border-radius:11px}
  .svc-card .ic svg{width:21px;height:21px}
  .svc-card h4{font-size:15px}
  .svc-card p{font-size:12.5px;line-height:1.5}
  .svc-note{margin-top:20px;font-size:13.5px}
  .adv-grid{grid-template-columns:1fr 1fr;gap:18px 10px}
  .adv{padding:2px}
  .adv .ic{width:50px;height:50px;margin-bottom:9px}
  .adv .ic svg{width:25px;height:25px}
  .adv h4{font-size:15px;margin-bottom:4px}
  .adv p{font-size:12.5px;line-height:1.5}
  .value-grid{grid-template-columns:1fr 1fr;gap:11px}
  .value-card{padding:16px 14px}
  .value-card h4{font-size:14.5px}
  .value-card p{font-size:12.5px;line-height:1.5}
  /* 模块/步骤 */
  .mod-card{padding:18px 16px}
  .mod-card .mt{margin-bottom:10px}
  .mod-card ul{gap:9px}
  .steps{grid-template-columns:1fr 1fr;gap:11px}
  .step{padding:18px 15px}
  .step .n{width:34px;height:34px;font-size:15px;margin-bottom:10px}
  .step h4{font-size:15px}
  .step p{font-size:12.5px;line-height:1.5}
  /* 内页头/CTA */
  .page-hero{padding:32px 0 26px}
  .page-hero h1{font-size:25px}
  .page-hero .sub{font-size:14px}
  .cta-band{padding:26px 22px;gap:14px}
  .cta-band h2{font-size:21px}
  .cta-band p{font-size:13.5px}
  /* 页脚 */
  .footer{padding:34px 0 18px}
  .f-grid{grid-template-columns:1fr 1fr;gap:20px 14px}
  .f-col:first-child{grid-column:1/-1}
  .f-col:nth-child(4){grid-column:1/-1;text-align:center}
  .f-col h5{margin-bottom:9px}
  .f-col ul{gap:7px}
  .f-col li a{font-size:13px}
  .f-col p{margin-bottom:3px;font-size:13px}
  .f-qr{gap:26px;justify-content:center}
  .f-qr img{width:70px;height:70px}
  .f-bottom{margin-top:22px;padding-top:14px;gap:7px;font-size:12px}
  .btn{height:44px;padding:0 20px}
  .qr-grid{grid-template-columns:1fr;gap:14px}
  /* 联系/详情/FAQ 卡片收紧 */
  .pd-side{padding:20px 18px}
  .pd-side .ps-row{padding:10px 0;font-size:13.5px}
  .contact-card{padding:22px 18px}
  .contact-card h3{font-size:17px;margin-bottom:14px}
  .faq{margin-bottom:10px}
  .faq summary{padding:15px 16px;font-size:14.5px}
  .faq .ans{padding:0 16px 16px;font-size:13.5px}
  .feat-strip{gap:10px}
}