:root{
  --brand:#1E6FE0;
  --brand-d:#1450B0;
  --brand-l:#E8F1FF;
  --eco:#07C160;
  --eco-d:#06703c;
  --eco-l:#E6F8EE;
  --sec:#5B4BD6;
  --sec-d:#3D2FA8;
  --sec-l:#EDECFF;
  --inf:#E08A2E;
  --inf-d:#A85F14;
  --inf-l:#FDF0E1;
  --sw:#0E9BB8;
  --sw-d:#0A6E85;
  --sw-l:#E2F6FA;
  /* 金山生态 ks */
  --ks:#C08A2E;
  --ks-d:#8B5E0F;
  --ks-l:#FCF4E3;
  --dom:#C0392B;
  --dom-d:#8C2519;
  --dom-l:#FBE9E6;
  --op:#D81B60;
  --op-d:#A01148;
  --op-l:#FDE7F0;
  --ink:#1A2233;
  --sub:#5B6678;
  --line:#E4E9F2;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --radius:16px;
  --shadow:0 8px 28px rgba(28,55,99,.09);
  --shadow-h:0 14px 40px rgba(28,55,99,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:#fff;padding:11px 22px;border-radius:30px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.btn:hover{background:var(--brand-d);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn.ghost{background:#fff;color:var(--brand-d);border:1px solid var(--brand)}
.btn.ghost:hover{background:var(--brand-l)}
.btn.eco{background:var(--eco)}
.btn.eco:hover{background:var(--eco-d)}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--brand-d)}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#3ea0ff);display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800}
/* 企业 LOGO（飞凡云科 FFC TECH） */
.logo img{display:block;height:38px;width:auto}
@media(max-width:560px){.logo img{height:31px}}
.nav ul{display:flex;gap:28px;list-style:none;font-size:15px}
.nav ul a{color:var(--sub);font-weight:500;position:relative;padding:4px 0}
.nav ul a:hover,.nav ul a.active{color:var(--brand-d)}
.nav ul a.active::after{content:"";position:absolute;left:0;right:0;bottom:-20px;height:3px;background:var(--brand);border-radius:3px}
.menu-btn{display:none;font-size:24px;background:none;border:none;cursor:pointer;color:var(--brand-d)}


/* 面包屑条（nav 下方独立条，明显可见） */
.crumbbar{background:#fff;border-bottom:1px solid var(--line)}
.crumbbar .wrap{display:flex;align-items:center;gap:9px;padding:13px 0;font-size:13.5px;color:var(--sub);flex-wrap:wrap}
.crumbbar a{color:var(--sub);font-weight:500}
.crumbbar a:hover{color:var(--brand-d)}
.crumbbar .sep{color:#c6d2e4;font-size:12px}
.crumbbar .cur{color:var(--ink);font-weight:700}
.crumbbar .back{margin-left:auto;color:var(--brand-d);font-weight:700;background:var(--brand-l);border-radius:20px;padding:4px 14px;font-size:12.5px}
.crumbbar .back:hover{background:var(--brand);color:#fff}
@media (max-width:640px){.crumbbar .back{margin-left:0}}

/* Hero / 公司介绍墙 */
.hero{background:linear-gradient(125deg,#0f3f8f 0%,var(--brand) 55%,#4f9bff 100%);color:#fff;padding:64px 0 72px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);border-radius:50%}
.hero .badge{display:inline-block;background:rgba(255,255,255,.16);padding:5px 14px;border-radius:30px;font-size:13px;margin-bottom:18px}
.hero h1{font-size:38px;line-height:1.3;font-weight:800;max-width:760px}
.hero p{font-size:16px;opacity:.92;margin:18px 0 28px;max-width:620px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero .stats{display:flex;gap:38px;margin-top:42px;flex-wrap:wrap}
.hero .stats div b{font-size:26px;display:block}
.hero .stats div span{font-size:13px;opacity:.85}
.hero .slogan{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:34px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.18)}
.hero .slogan span{display:flex;align-items:baseline;gap:9px}
.hero .slogan b{font-size:13px;font-weight:800;letter-spacing:.12em;color:#fff}
.hero .slogan i{font-size:13px;font-style:normal;opacity:.78}

/* Section */
.section{padding:58px 0}
.section.alt{background:#fff}
.sec-head{margin-bottom:30px}
.sec-head .eyebrow{color:var(--brand);font-size:13px;font-weight:700;letter-spacing:2px}
.sec-head h2{font-size:27px;margin:8px 0 6px}
.sec-head p{color:var(--sub);font-size:14px;max-width:680px}
.more{display:inline-flex;align-items:center;gap:5px;color:var(--brand-d);font-weight:600;font-size:14px;margin-top:6px}

/* wall grid */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:1fr 1fr}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
@media(max-width:980px){.g4,.g5{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.g2,.g3,.g4,.g5{grid-template-columns:1fr}.nav ul{display:none}.menu-btn{display:block}.hero h1{font-size:28px}}

/* card */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:.22s;height:100%}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#cfe0ff}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--brand-l);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.card h3{font-size:17px;margin-bottom:6px}
.card p{font-size:13.5px;color:var(--sub)}
.card .tag{display:inline-block;font-size:12px;color:var(--brand-d);background:var(--brand-l);padding:2px 10px;border-radius:6px;margin-top:12px}

/* eco entry card */
.eco-card{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;box-shadow:var(--shadow);transition:.22s;display:flex;flex-direction:column;gap:8px;min-height:150px}
.eco-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.eco-card .ic{font-size:30px}
.eco-card h3{font-size:18px}
.eco-card .desc{font-size:13px;color:var(--sub);flex:1}
.eco-card .go{font-size:13px;color:var(--brand-d);font-weight:600}
.card .go{font-size:13px;color:var(--brand-d);font-weight:600;margin-top:8px}
.eco-card.tencent{border-top:4px solid var(--eco)}
.eco-card.tencent .go{color:var(--eco-d)}

/* product empty */
.prod{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow);transition:.2s}
.prod:hover{transform:translateY(-3px);box-shadow:var(--shadow-h)}
.prod .ph{aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#eef3fb;margin-bottom:12px}
.prod .ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s}
.prod:hover .ph img{transform:scale(1.04)}
.ph{aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#eef3fb;margin-bottom:12px}
.prod h4{font-size:15px}
.prod .meta{font-size:12px;color:var(--sub);margin-top:4px}
.prod .empty{display:inline-block;font-size:11px;color:#b08a1a;background:#fdf3da;padding:2px 8px;border-radius:6px;margin-top:10px}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.filters button{border:1px solid var(--line);background:#fff;color:var(--sub);padding:8px 18px;border-radius:30px;font-size:13.5px;cursor:pointer;transition:.2s;font-weight:500}
.filters button.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.filters button.eco.active{background:var(--eco);border-color:var(--eco)}
.eco-head{display:flex;align-items:baseline;gap:6px 16px;flex-wrap:wrap;margin:30px 0 14px;
  padding-bottom:11px;border-bottom:1px solid var(--line)}
.eco-head:first-of-type{margin-top:4px}
.eco-head[id]{scroll-margin-top:100px}
.eco-head h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4}
.eco-head p{font-size:13.5px;color:var(--sub);flex:1 1 340px;min-width:0;line-height:1.7}
.eco-head a{font-size:13px;font-weight:600;color:var(--brand);white-space:nowrap}
.eco-head a:hover{text-decoration:underline}
@media(max-width:680px){
  .eco-head h3{font-size:17px}
  .eco-head p{flex:1 1 100%}
}

/* form */
.form-wrap{background:linear-gradient(135deg,#0f3f8f,var(--brand));border-radius:22px;padding:42px;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
@media(max-width:780px){.form-wrap{grid-template-columns:1fr;padding:30px}}
.form-wrap h2{color:#fff;font-size:24px}
.form-wrap p{opacity:.9;font-size:14px}
.form-wrap form{display:grid;gap:12px}
.form-wrap input,.form-wrap select,.form-wrap textarea{width:100%;padding:12px 14px;border-radius:10px;border:none;font-size:14px;font-family:inherit;background:rgba(255,255,255,.95)}
.form-wrap textarea{resize:vertical;min-height:70px}
.form-wrap .btn{background:#fff;color:var(--brand-d);justify-content:center}
.form-wrap .btn:hover{background:#eef3fb}
.form-note{font-size:12px;opacity:.8;margin-top:6px}

/* footer */
footer{background:#0e1830;color:#aab6cc;padding:46px 0 22px;margin-top:10px;font-size:13px}
footer .wrap{max-width:1200px}
footer .ft-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:34px;align-items:start}
footer .ft-brand .logo{color:#fff;font-size:17px;gap:9px;margin-bottom:14px}
footer .ft-brand .logo .mark{width:28px;height:28px;border-radius:8px;font-size:13px}
footer .ft-brand .logo img{display:block;height:32px;width:auto}
footer .ft-brand p{font-size:13px;line-height:1.85;color:#9dabc4;max-width:660px}
footer .ft-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
footer .ft-tags span{display:inline-block;padding:4px 12px;border-radius:20px;font-size:12px;color:#9fc7f2;background:rgba(63,140,255,.12);border:1px solid rgba(63,140,255,.22)}
footer .ft-contact{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:16px;font-size:13px;color:#c3d0e6}
footer .ft-contact a{display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:600;margin:0}
footer .ft-contact a:hover{color:#8fc0ff}
footer .ft-promise{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:26px;padding:20px 0;border-top:1px solid #1f2d4d;border-bottom:1px solid #1f2d4d}
footer .ft-promise > div{padding-left:14px;border-left:2px solid #2f6fd0}
footer .ft-promise b{display:block;color:#fff;font-size:13px;font-weight:600;margin-bottom:5px}
footer .ft-promise span{display:block;font-size:12px;color:#8b9cb8;line-height:1.6}
footer .ft-qr{display:flex;flex-direction:column;gap:12px}
footer .ft-qr-title{font-size:12px;font-weight:600;color:#8fa3c4;letter-spacing:.08em}
footer .ft-qr-row{display:flex;gap:14px}
footer .qr{width:156px;background:#fff;border-radius:14px;padding:10px 10px 12px;text-align:center;box-shadow:0 12px 28px rgba(0,0,0,.22)}
footer .qr img{display:block;width:136px;height:136px;border-radius:8px}
footer .qr b{display:block;margin-top:8px;font-size:12px;font-weight:600;color:#12233f;line-height:1.35}
footer .qr i{display:block;margin-top:2px;font-size:11px;font-style:normal;color:#7b8aa6}
footer .ft-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:26px 30px;padding:28px 0 0}
footer h4{color:#fff;font-size:14px;margin-bottom:12px}
footer a{display:block;color:#aab6cc;margin:5px 0}
footer a:hover{color:#fff}
footer .ft-sol-block{margin-top:26px;padding-top:24px;border-top:1px solid #1a2742}
footer .ft-sol-head{display:flex;align-items:baseline;justify-content:space-between;gap:18px;flex-wrap:wrap}
footer .ft-sol-head a{display:inline-block;color:#8fc0ff;font-size:12px;font-weight:600;margin:0}
footer .ft-sol-head a:hover{color:#fff}
footer .ft-sol{display:grid;grid-template-columns:repeat(4,1fr);gap:0 30px}
footer .ft-bottom{border-top:1px solid #1f2d4d;margin-top:26px;padding-top:16px;display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:space-between;align-items:center;font-size:12px;color:#8294b0}
footer .ft-links a{display:inline-block;color:#8294b0;margin:0 16px 0 0}
footer .ft-links a:hover{color:#fff}
footer .ft-tip{margin-top:10px;font-size:11px;color:#5f708c}
@media(max-width:980px){
  footer .ft-top{grid-template-columns:1fr;gap:24px}
  footer .ft-brand p{max-width:none}
  footer .ft-promise{grid-template-columns:1fr 1fr;gap:18px}
  footer .ft-nav{grid-template-columns:1fr 1fr;gap:22px 24px}
  footer .ft-sol{grid-template-columns:1fr 1fr;gap:0 24px}
}
@media(max-width:560px){
  footer{padding:34px 0 20px}
  footer .ft-qr-row{flex-wrap:wrap}
  footer .ft-contact{flex-direction:column;align-items:flex-start;gap:8px}
  footer .ft-contact a,footer .ft-contact span{max-width:100%;overflow-wrap:anywhere}
  footer .ft-promise{grid-template-columns:1fr;gap:14px;padding:18px 0}
  footer .ft-promise span{font-size:11.5px}
  footer .ft-nav{grid-template-columns:1fr 1fr;gap:20px 18px}
  footer .ft-sol{grid-template-columns:1fr 1fr;gap:0 18px}
  footer .ft-sol-head a{font-size:11px}
  footer .ft-bottom{flex-direction:column;align-items:flex-start}
}

/* floating wecom */
.float{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;flex-direction:column;gap:12px}
.float a{width:54px;height:54px;border-radius:50%;background:var(--eco);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:var(--shadow-h);transition:.2s}
.float a:hover{transform:scale(1.08)}
.float a.blue{background:var(--brand)}
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:#1A2233;color:#fff;padding:12px 22px;border-radius:30px;font-size:14px;opacity:0;pointer-events:none;transition:.3s;z-index:80}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 线条图标（简洁高科技风） */
.ic svg,.eco-card .ic svg{width:26px;height:26px;stroke:var(--brand-d);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.eco-card .ic svg{stroke:var(--eco-d)}
.float a svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* 导航下拉 */
.nav li.has-drop{position:relative}
.nav li.has-drop > a .caret{font-size:10px;margin-left:3px;opacity:.55;vertical-align:1px}
.drop{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(10px);min-width:210px;background:rgba(255,255,255,.72);backdrop-filter:blur(20px) saturate(170%);-webkit-backdrop-filter:blur(20px) saturate(170%);border:1px solid rgba(24,95,165,.16);border-radius:18px;box-shadow:0 22px 55px rgba(13,42,80,.24);padding:10px;display:flex;flex-direction:column;gap:3px;opacity:0;visibility:hidden;transition:.2s ease;z-index:60}
.nav li.has-drop:hover .drop,.nav li.has-drop:focus-within .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop::before{content:"";position:absolute;top:0;left:16px;right:16px;height:3px;background:linear-gradient(90deg,var(--brand),var(--eco));border-radius:3px}
.drop a{display:block;padding:13px 18px;border-radius:12px;color:#33405a;font-size:16px;font-weight:600;white-space:nowrap;transition:.18s}
.drop a:hover{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;transform:translateX(3px)}
.nav li.has-drop:hover > a .caret{transform:rotate(180deg)}
.nav li.has-drop > a .caret{transition:.2s;display:inline-block}

/* 移动端菜单 */
.m-menu{display:none;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:6px 24px 14px}
.m-menu.open{display:flex}
.m-menu > a,.m-menu > details > summary{padding:14px 4px;color:var(--ink);font-weight:600;font-size:16px;border-bottom:1px solid var(--line);cursor:pointer}
.m-menu details > summary{list-style:none}
.m-menu details > summary::-webkit-details-marker{display:none}
.m-menu details a{display:block;padding:11px 4px 11px 20px;color:var(--sub);font-weight:500;font-size:15px;border-bottom:1px solid #f0f3f8}

/* breadcrumb */
.crumb{font-size:13px;color:var(--sub);padding:18px 0 0}
.crumb a:hover{color:var(--brand-d)}

/* 产品分类角标（安全生态：网络/数据；基础设施：超融合） */
.cat{display:inline-block;font-size:11px;font-weight:600;padding:2px 9px;border-radius:20px;margin-bottom:10px}
.cat.net{background:#FCEBEB;color:#A32D2D}
.cat.data{background:#E8F1FF;color:#1E6FE0}
.cat.inf{background:#E6F8EE;color:#06703c}

/* 解决方案下拉 / 移动菜单 / 页脚的分组小标题 */
.drop .dt{font-size:12px;font-weight:600;color:var(--brand);padding:9px 18px 3px;letter-spacing:.03em;white-space:nowrap}
.drop .dt:not(:first-child){margin-top:6px;border-top:1px solid rgba(24,95,165,.14);padding-top:10px}
.m-menu .dt{font-size:12px;font-weight:600;color:var(--brand);padding:10px 4px 2px 20px;border-bottom:1px solid #f0f3f8}
footer .dt{font-size:12px;font-weight:600;color:#9fc7f2;padding:10px 0 2px;letter-spacing:.03em}
footer .dt:not(:first-child){margin-top:4px}


/* --- PROD-COVER-HOVER --- */
/* 产品封面：透明底图 + 生态浅底常驻，悬停时底色加深并浮现生态色边框 */
.prod .ph{--eco-c:var(--brand);background:color-mix(in srgb,var(--eco-c) 8%,#fff);transition:.22s}
.prod:hover .ph{background:color-mix(in srgb,var(--eco-c) 15%,#fff);box-shadow:inset 0 0 0 1.5px var(--eco-c)}
.prod:hover .ph img{transform:scale(1.05)}
.prod .ph.e-ms{--eco-c:var(--brand)}
.prod .ph.e-tx{--eco-c:var(--eco)}
.prod .ph.e-cn{--eco-c:var(--dom)}
.prod .ph.e-sec{--eco-c:var(--sec)}
.prod .ph.e-sw{--eco-c:var(--sw)}
.prod .ph.e-inf{--eco-c:var(--inf)}
.prod .ph.e-op{--eco-c:var(--op)}
@media(hover:none){.prod:hover .ph{box-shadow:none;background:color-mix(in srgb,var(--eco-c) 8%,#fff)}.prod:hover .ph img{transform:none}}