/* ===== 优谷·雅言 官网 共享样式 (site.css) — 依蓝湖 Axure 设计稿
   主蓝 #1891ff · 微软雅黑 · 真实文案/配色取自设计导出。首页+9 内页共用。 ===== */
:root{
  --blue:#1891ff; --blue-2:#409eff; --blue-d:#0f6fd6; --blue-l:#eaf4ff;
  --orange:#ff7a18; --orange-d:#ef6a00;
  --ink:#333333; --ink2:#555c66; --muted:#999999;
  --line:#e4e4e4; --bg:#ffffff; --bg2:#f5f8fc;
  --dark:#1b2330; --dark2:#222c3c;
  --radius:12px; --maxw:1180px;
  --font:"微软雅黑","Microsoft YaHei","PingFang SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink);white-space:nowrap}
.brand .logo{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700}
.nav .links{display:flex;gap:24px;margin-left:10px}
.nav .links>a,.nav .drop>span{font-size:15px;color:var(--ink2);transition:.15s;cursor:pointer;white-space:nowrap}
.nav .links>a:hover,.nav .drop>span:hover,.nav .links>a.on,.nav .drop.on>span{color:var(--blue)}
.nav .drop{position:relative}
.nav .drop>span::after{content:"▾";font-size:11px;margin-left:3px;color:var(--muted)}
.nav .drop .menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.1);padding:8px;min-width:140px;opacity:0;visibility:hidden;transition:.15s;margin-top:8px}
.nav .drop:hover .menu{opacity:1;visibility:visible;margin-top:2px}
.nav .drop .menu a{display:block;padding:8px 12px;border-radius:7px;font-size:14px;color:var(--ink2)}
.nav .drop .menu a:hover{background:var(--blue-l);color:var(--blue)}
.nav .right{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;gap:7px;border-radius:8px;font-weight:600;font-size:15px;padding:9px 18px;transition:.15s;cursor:pointer;border:none;font-family:inherit;white-space:nowrap}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(24,145,255,.26)}
.btn.primary:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink2);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--blue);color:var(--blue)}
.burger{display:none;margin-left:auto;width:40px;height:40px;border:none;background:none;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ---------- Hero(首页大图) ---------- */
.hero{position:relative;background:radial-gradient(900px 440px at 80% -12%,rgba(24,145,255,.34),transparent 60%),linear-gradient(150deg,rgba(18,26,42,.92) 0%,rgba(22,34,58,.84) 52%,rgba(16,28,50,.93) 100%),url(/site-img/hero.jpg) center/cover no-repeat,#172033;color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(720px 380px at 72% 22%,#000,transparent 75%);pointer-events:none}
.hero .wrap{position:relative;z-index:1;padding:88px 24px 80px}
.hero .overline{color:#7dc0ff;font-size:14px;font-weight:600;letter-spacing:.1em;margin-bottom:18px}
.hero h1{font-size:clamp(30px,5.2vw,56px);line-height:1.14;font-weight:700;letter-spacing:-.01em}
.hero h1 .hl{background:linear-gradient(90deg,#56a9ff,#9fd0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{max-width:680px;margin-top:22px;font-size:clamp(14.5px,2vw,17px);color:#c3cedd;line-height:1.85}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero .btn.primary{font-size:16px;padding:13px 28px}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.3);font-size:16px;padding:13px 28px}
.hero .btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.hero .stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:52px;padding-top:30px;border-top:1px solid rgba(255,255,255,.12)}
.hero .stat .n{font-size:26px;font-weight:700}.hero .stat .n b{color:#56a9ff}
.hero .stat .l{font-size:13px;color:#93a0b4;margin-top:3px}

/* ---------- 内页页头(小 banner) ---------- */
.page-hero{position:relative;background:radial-gradient(800px 360px at 82% -20%,rgba(24,145,255,.36),transparent 60%),linear-gradient(150deg,#1a2336,#22304a 60%,#16243c);color:#fff;overflow:hidden}
.page-hero .wrap{position:relative;z-index:1;padding:60px 24px 56px}
.page-hero .crumb{font-size:13px;color:#9fb2cc;margin-bottom:14px}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:clamp(26px,4vw,40px);font-weight:700;letter-spacing:-.01em}
.page-hero p{max-width:680px;margin-top:14px;color:#c3cedd;font-size:clamp(14px,1.8vw,16px);line-height:1.85}

/* ---------- 区块通用 ---------- */
section{padding:74px 0}
section.alt{background:var(--bg2)}
.sec-head{text-align:center;max-width:720px;margin:0 auto 46px}
.sec-head.left{text-align:left;margin-left:0}
.sec-head .eyebrow{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.sec-head h2{font-size:clamp(24px,3.2vw,32px);font-weight:700;margin-top:10px}
.sec-head p{color:var(--muted);font-size:15px;margin-top:12px;line-height:1.8}

/* ---------- 卡片图标(六边形,替换 emoji) ---------- */
.ic-hex{width:58px;height:58px;display:block}
.cap .ic,.feat .ic{display:grid;place-items:center;background:none;box-shadow:none}
.cap .ic{width:58px;height:58px}
.cap .ic img,.cap .ic svg{width:58px;height:58px;display:block}
.feat .ic{width:48px;height:48px}
.feat .ic img,.feat .ic svg{width:48px;height:48px;display:block}

/* ---------- 产品特点 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{position:relative;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.18s}
.cap:hover{border-color:transparent;box-shadow:0 14px 38px rgba(24,72,140,.12);transform:translateY(-4px)}
.cap h3{font-size:18.5px;font-weight:700;margin:16px 0 4px}
.cap .en{font-size:12px;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.cap p{color:var(--ink2);font-size:13.5px;margin-top:10px;line-height:1.7}
.cap .new{position:absolute;top:18px;right:18px;font-size:11px;font-weight:700;color:#fff;background:var(--orange);border-radius:20px;padding:2px 10px}

/* ---------- 实景展示 / 图文 ---------- */
.show-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.shot{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#0e1726;transition:.18s}
.shot:hover{box-shadow:0 14px 34px rgba(24,72,140,.14);transform:translateY(-3px)}
.shot img{width:100%;aspect-ratio:1722/674;object-fit:cover;display:block}
.shot .cap{padding:14px 18px;font-size:14.5px;font-weight:700;color:var(--ink)}
.shot .cap span{display:block;font-size:12.5px;color:var(--muted);font-weight:400;margin-top:3px}

/* 图文左右分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split.rev .txt{order:2}
.split .txt h2{font-size:clamp(22px,3vw,30px);font-weight:700;margin-bottom:16px}
.split .txt p{color:var(--ink2);font-size:15px;line-height:1.9;margin-bottom:12px}
.split .pic{border-radius:var(--radius);overflow:hidden;box-shadow:0 16px 40px rgba(24,72,140,.14)}
.split .pic img{width:100%;display:block;aspect-ratio:1722/674;object-fit:cover}

/* 正文 prose */
.prose{max-width:820px;margin:0 auto;color:var(--ink2);font-size:15.5px;line-height:1.95}
.prose h3{color:var(--ink);font-size:20px;font-weight:700;margin:30px 0 12px}
.prose p{margin-bottom:16px}
.prose ul{margin:0 0 16px 22px}.prose li{margin-bottom:8px}

/* ---------- 平台能力(浅条目) ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feat{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;transition:.16s}
section.alt .feat{background:#fff}
.feat:hover{border-color:var(--blue);box-shadow:0 10px 26px rgba(24,72,140,.08)}
.feat h3{font-size:16px;font-weight:700;margin:13px 0 6px}
.feat p{font-size:13px;color:var(--ink2);line-height:1.65}

/* ---------- 应用场景 / 解决方案深色卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene{position:relative;border-radius:var(--radius);overflow:hidden;min-height:188px;padding:26px 24px;color:#fff;display:flex;flex-direction:column;justify-content:flex-end;transition:.18s}
.scene:nth-child(6n+1){background:linear-gradient(155deg,#1f6fd6,#15426f)}
.scene:nth-child(6n+2){background:linear-gradient(155deg,#2487e0,#16466e)}
.scene:nth-child(6n+3){background:linear-gradient(155deg,#2a73c8,#1a2f50)}
.scene:nth-child(6n+4){background:linear-gradient(155deg,#1f86c9,#143a52)}
.scene:nth-child(6n+5){background:linear-gradient(155deg,#2d6fb0,#182a48)}
.scene:nth-child(6n){background:linear-gradient(155deg,#1f7fb8,#143546)}
.scene:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.2)}
.scene::before{content:"";position:absolute;top:-30px;right:-30px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%)}
.scene .ic{font-size:28px;position:relative}
.scene h3{font-size:17px;font-weight:700;margin:12px 0 8px;position:relative}
.scene p{font-size:13px;color:#dbe7f5;line-height:1.6;position:relative}

/* ---------- 时间轴(发展历程) ---------- */
.timeline{max-width:840px;margin:0 auto;position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--blue),var(--blue-l))}
.tl-item{position:relative;padding:0 0 34px 26px}
.tl-item::before{content:"";position:absolute;left:-30px;top:3px;width:16px;height:16px;border-radius:50%;background:#fff;border:4px solid var(--blue)}
.tl-item .yr{font-size:20px;font-weight:700;color:var(--blue)}
.tl-item h3{font-size:16.5px;font-weight:700;margin:4px 0 6px}
.tl-item p{color:var(--ink2);font-size:14px;line-height:1.75}

/* ---------- 新闻列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:18px;max-width:900px;margin:0 auto}
.news{display:grid;grid-template-columns:240px 1fr;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.16s}
.news:hover{box-shadow:0 12px 30px rgba(24,72,140,.1);transform:translateY(-2px)}
.news .pic{background:#eef3f9}.news .pic img{width:100%;height:100%;object-fit:cover;aspect-ratio:240/150}
.news .body{padding:20px 22px 20px 0}
.news .date{font-size:13px;color:var(--blue);font-weight:600}
.news h3{font-size:17px;font-weight:700;margin:7px 0 8px}
.news p{color:var(--ink2);font-size:13.5px;line-height:1.7}

/* ---------- 用户评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.16s}
.review:hover{box-shadow:0 12px 30px rgba(24,72,140,.1);transform:translateY(-3px)}
.review .stars{color:#ffb020;font-size:15px;letter-spacing:2px}
.review p{color:var(--ink2);font-size:14px;line-height:1.8;margin:12px 0 18px}
.review .who{display:flex;align-items:center;gap:12px}
.review .av{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
.review .who .nm{font-weight:700;font-size:14.5px}.review .who .rl{font-size:12.5px;color:var(--muted)}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.contact-card .row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.contact-card .row:last-child{border:none}
.contact-card .ic{width:42px;height:42px;border-radius:10px;background:var(--blue-l);color:var(--blue);display:grid;place-items:center;font-size:20px;flex:none}
.contact-card .k{font-size:13px;color:var(--muted)}.contact-card .v{font-size:15.5px;font-weight:600;margin-top:2px}
.map-box{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);min-height:300px;background:#eef3f9 center/cover}

/* ---------- 数字条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.metric .n{font-size:clamp(28px,4vw,40px);font-weight:800;color:var(--blue)}
.metric .l{color:var(--muted);font-size:14px;margin-top:6px}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--blue),var(--blue-d));color:#fff;text-align:center}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700}
.cta-band p{color:#dceeff;margin-top:10px;font-size:15px}
.cta-band .btn.primary{background:#fff;color:var(--blue);margin-top:22px;font-size:16px;padding:13px 30px}
.cta-band .btn.primary:hover{background:#eef6ff}
.cta-band .btn.ghost{color:#fff;border-color:rgba(255,255,255,.5);margin:22px 0 0 12px;font-size:16px;padding:13px 30px}

/* ---------- 页脚 ---------- */
footer{background:var(--dark);color:#9aa6b6;padding:54px 0 26px;font-size:14px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:30px}
.foot-brand .b{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px}
.foot-brand .b .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--blue-2));display:grid;place-items:center;font-size:16px}
.foot-brand p{margin-top:14px;color:#7c8696;line-height:1.7;font-size:13px;max-width:300px}
.foot-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px}
.foot-col a{display:block;color:#93a0b2;margin-bottom:10px;font-size:13.5px;transition:.15s}
.foot-col a:hover{color:#fff}
.foot-contact .row{display:flex;gap:8px;color:#aab4c4;margin-bottom:11px;font-size:13.5px;line-height:1.5}
.foot-contact .em{flex:none}
.foot-qr{margin-top:6px}
.foot-bot{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;color:#6f7a8c;font-size:12.5px}
.foot-bot a{color:#8794a6}.foot-bot a:hover{color:#fff}

/* ---------- 右侧悬浮工具条 ---------- */
.fab{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:12px}
.fab a{width:62px;height:62px;border-radius:13px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:#fff;font-size:11px;font-weight:600;box-shadow:0 8px 20px rgba(0,0,0,.16);transition:.15s}
.fab a:hover{transform:translateX(-3px)}
.fab .f-chat{background:linear-gradient(135deg,var(--orange),#ff9a4d)}
.fab .f-tel{background:linear-gradient(135deg,var(--blue),var(--blue-2))}
.fab .f-com{background:linear-gradient(135deg,#2d8cff,#1f6fe0)}
.fab svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .cap-grid,.scene-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid,.metrics{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:24px}.split.rev .txt{order:0}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav .links{position:fixed;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;gap:0;margin:0;padding:8px 0;display:none;box-shadow:0 14px 30px rgba(0,0,0,.1)}
  .nav .links.open{display:flex}
  .nav .links>a,.nav .drop>span{padding:13px 24px;width:100%}
  .nav .drop .menu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;margin:0;padding:0 0 6px 12px;min-width:0}
  .nav .drop>span::after{display:none}
  .nav .right .btn.ghost{display:none}
  .burger{display:flex}
  .hero .wrap{padding:62px 22px 54px}.hero .stats{gap:22px}
  .cap-grid,.feat-grid,.scene-grid,.show-grid,.review-grid,.metrics{grid-template-columns:1fr}
  .news{grid-template-columns:1fr}.news .pic img{aspect-ratio:16/8}.news .body{padding:0 20px 20px}
  section{padding:52px 0}.foot-top{grid-template-columns:1fr}
  .fab a{width:52px;height:52px;font-size:10px}.fab{right:10px}
}