/* ============================================================
   青岛尚云数字智能科技有限公司 官网样式
   纯静态 · 无框架依赖 · PC + 移动端自适应
   ============================================================ */

:root{
  --c-primary:#0052d9;
  --c-primary-d:#003ba6;
  --c-primary-l:#e8f0ff;
  --c-accent:#e8442e;
  --c-orange:#f5821f;
  --c-green:#00a870;
  --c-ink:#1a1f2e;
  --c-text:#3d4457;
  --c-sub:#6b7385;
  --c-mute:#98a0b3;
  --c-line:#e6e9f0;
  --c-line-l:#f0f2f7;
  --c-bg:#ffffff;
  --c-bg-soft:#f6f8fc;
  --c-bg-deep:#0f1830;
  --radius:10px;
  --radius-s:6px;
  --shadow:0 2px 12px rgba(16,32,72,.06);
  --shadow-h:0 8px 28px rgba(16,32,72,.12);
  --wrap:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font:15px/1.75 var(--font);color:var(--c-text);background:var(--c-bg);overflow-x:hidden}
img{max-width:100%;border:0;vertical-align:middle}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--c-primary)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{color:var(--c-ink);font-weight:700;line-height:1.4}
table{border-collapse:collapse;width:100%}
input,textarea,select,button{font-family:inherit;font-size:inherit;outline:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.clearfix::after{content:"";display:block;clear:both}
.hide{display:none !important}

/* ---------- 顶部通栏（全站锚文本回流） ---------- */
.topbar{background:var(--c-bg-soft);border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-sub);line-height:38px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px}
.topbar-l{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar a{color:var(--c-sub)}
.topbar a:hover{color:var(--c-primary);text-decoration:underline}
.topbar-r{white-space:nowrap;flex-shrink:0}
.topbar-r b{color:var(--c-accent);font-size:14px}

/* ---------- 页头 ---------- */
.header{background:#fff;border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:100}
.header .wrap{display:flex;align-items:center;height:78px;gap:24px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{width:42px;height:42px;border-radius:9px;background:linear-gradient(135deg,var(--c-primary),#2b8cff);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:19px;letter-spacing:-.5px;flex-shrink:0}
.logo-txt strong{display:block;font-size:19px;color:var(--c-ink);line-height:1.25;letter-spacing:.5px}
.logo-txt span{display:block;font-size:11px;color:var(--c-mute);letter-spacing:1.2px;text-transform:uppercase}

.nav{margin-left:auto;display:flex;align-items:center}
.nav a{display:block;padding:0 15px;height:78px;line-height:78px;font-size:15px;color:var(--c-text);position:relative;white-space:nowrap}
.nav a::after{content:"";position:absolute;left:15px;right:15px;bottom:0;height:3px;background:var(--c-primary);transform:scaleX(0);transition:transform .22s}
.nav a:hover,.nav a.on{color:var(--c-primary);font-weight:600}
.nav a:hover::after,.nav a.on::after{transform:scaleX(1)}

.head-tel{margin-left:20px;padding-left:20px;border-left:1px solid var(--c-line);flex-shrink:0}
.head-tel span{display:block;font-size:12px;color:var(--c-mute)}
.head-tel b{display:block;font-size:20px;color:var(--c-accent);font-weight:700;letter-spacing:-.3px}
.navbtn{display:none;width:40px;height:40px;margin-left:auto;flex-direction:column;justify-content:center;gap:5px;background:none;border:0;cursor:pointer}
.navbtn i{display:block;height:2px;background:var(--c-ink);border-radius:2px;transition:.25s}
.navbtn.on i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navbtn.on i:nth-child(2){opacity:0}
.navbtn.on i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 首页 Banner ---------- */
.hero{background:linear-gradient(120deg,#0b1b3d 0%,#11337a 52%,#0052d9 100%);color:#fff;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-160px;top:-160px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(80,150,255,.35),transparent 68%)}
.hero::after{content:"";position:absolute;left:-100px;bottom:-220px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(0,168,112,.22),transparent 68%)}
.hero .wrap{position:relative;z-index:2;padding-top:74px;padding-bottom:74px;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.hero-tag{display:inline-block;padding:5px 14px;border:1px solid rgba(255,255,255,.34);border-radius:20px;font-size:13px;margin-bottom:20px;backdrop-filter:blur(4px)}
.hero h1{font-size:40px;line-height:1.28;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:#6ab0ff}
.hero p{font-size:16px;color:rgba(255,255,255,.8);line-height:1.85;margin-bottom:28px;max-width:600px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:36px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16)}
.hero-meta div b{display:block;font-size:28px;color:#fff;line-height:1.2}
.hero-meta div span{font-size:13px;color:rgba(255,255,255,.62)}

/* 表单卡 */
.hero-form{background:#fff;border-radius:14px;padding:28px;box-shadow:0 18px 50px rgba(0,10,40,.3);color:var(--c-text)}
.hero-form h3{font-size:19px;margin-bottom:6px}
.hero-form>p{font-size:13px;color:var(--c-sub);margin-bottom:18px}
.fld{margin-bottom:13px}
.fld input,.fld select,.fld textarea{width:100%;padding:11px 13px;border:1px solid var(--c-line);border-radius:var(--radius-s);background:#fbfcfe;transition:.2s}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(0,82,217,.09)}
.fld textarea{resize:vertical;min-height:78px}
.form-note{font-size:12px;color:var(--c-mute);margin-top:11px;text-align:center;line-height:1.6}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:12px 28px;border-radius:var(--radius-s);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.22s;white-space:nowrap}
.btn-p{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-p:hover{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(0,82,217,.3)}
.btn-a{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-a:hover{background:#c9351f;border-color:#c9351f;color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(232,68,46,.3)}
.btn-o{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-o:hover{background:rgba(255,255,255,.13);color:#fff;border-color:#fff}
.btn-g{background:#fff;color:var(--c-primary);border-color:var(--c-line)}
.btn-g:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-l)}
.btn-blk{width:100%}
.btn-sm{padding:8px 18px;font-size:14px}

/* ---------- 区块通用 ---------- */
.sec{padding:66px 0}
.sec-soft{background:var(--c-bg-soft)}
.sec-hd{text-align:center;margin-bottom:44px}
.sec-hd .kicker{display:inline-block;font-size:13px;color:var(--c-primary);letter-spacing:2px;text-transform:uppercase;margin-bottom:10px;font-weight:600}
.sec-hd h2{font-size:31px;margin-bottom:12px;letter-spacing:.5px}
.sec-hd p{color:var(--c-sub);font-size:15px;max-width:760px;margin:0 auto}
.sec-hd.left{text-align:left}
.sec-hd.left p{margin:0}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;transition:.25s;position:relative;overflow:hidden}
.card:hover{border-color:#c9d8f5;box-shadow:var(--shadow-h);transform:translateY(-3px)}
.card h3{font-size:18px;margin-bottom:9px}
.card p{color:var(--c-sub);font-size:14px;line-height:1.8}

/* 产品卡 */
.pcard{display:flex;flex-direction:column;height:100%}
.pcard-top{display:flex;align-items:flex-start;gap:13px;margin-bottom:14px}
.pico{width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pico svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.pcard-tt h3{font-size:18px;margin:0 0 3px}
.pcard-tt span{font-size:12px;color:var(--c-mute)}
.pcard>p{flex:1;margin-bottom:15px}
.pcard-ft{display:flex;justify-content:space-between;align-items:center;padding-top:14px;border-top:1px dashed var(--c-line)}
.pcard-ft .price{font-size:14px;color:var(--c-accent);font-weight:600}
.pcard-ft .more{font-size:14px;color:var(--c-primary);font-weight:600}
.tagline{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.tagline span{font-size:12px;padding:2px 9px;background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:12px;color:var(--c-sub)}

/* 方案卡 */
.scard{padding:0;overflow:hidden;display:flex;flex-direction:column}
.scard-hd{padding:26px;color:#fff;position:relative}
.scard-hd::after{content:"";position:absolute;right:-30px;bottom:-40px;width:130px;height:130px;border-radius:50%;background:rgba(255,255,255,.11)}
.scard-hd h3{color:#fff;font-size:20px;margin-bottom:6px;position:relative;z-index:1}
.scard-hd p{color:rgba(255,255,255,.82);font-size:13px;position:relative;z-index:1}
.scard-bd{padding:22px 26px 26px;flex:1;display:flex;flex-direction:column}
.scard-bd ul{margin-bottom:16px;flex:1}
.scard-bd li{font-size:14px;color:var(--c-sub);padding-left:19px;position:relative;margin-bottom:8px;line-height:1.7}
.scard-bd li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* 数字 */
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.nums div b{display:block;font-size:36px;color:var(--c-primary);line-height:1.15;letter-spacing:-1px}
.nums div span{font-size:14px;color:var(--c-sub)}

/* 服务图标 */
.svc{display:flex;gap:15px;align-items:flex-start}
.svc-ico{width:44px;height:44px;border-radius:10px;background:var(--c-primary-l);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.svc-ico svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.svc h3{font-size:17px;margin-bottom:6px}

/* ---------- 内页头 ---------- */
.phead{background:linear-gradient(115deg,#0d2452,#1a4ba8);color:#fff;padding:52px 0 46px;position:relative;overflow:hidden}
.phead::after{content:"";position:absolute;right:-90px;top:-110px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(90,160,255,.3),transparent 70%)}
.phead .wrap{position:relative;z-index:1}
.phead h1{color:#fff;font-size:32px;margin-bottom:11px;letter-spacing:.5px}
.phead p{color:rgba(255,255,255,.78);font-size:15px;max-width:820px}

/* 面包屑 */
.crumb{background:var(--c-bg-soft);border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-sub);padding:13px 0}
.crumb a{color:var(--c-sub)}
.crumb a:hover{color:var(--c-primary)}
.crumb span{margin:0 7px;color:var(--c-mute)}
.crumb .cur{color:var(--c-ink)}

/* ---------- 两栏布局 ---------- */
.layout{display:grid;grid-template-columns:1fr 292px;gap:34px;padding:44px 0 66px;align-items:start}
.main{min-width:0}
.side{position:sticky;top:98px}
.sbox{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);margin-bottom:20px;overflow:hidden}
.sbox-hd{padding:15px 20px;border-bottom:1px solid var(--c-line);background:var(--c-bg-soft)}
.sbox-hd h3{font-size:16px}
.sbox-bd{padding:16px 20px}
.slist li{border-bottom:1px dashed var(--c-line-l)}
.slist li:last-child{border:0}
.slist a{display:block;padding:10px 0;font-size:14px;color:var(--c-text);line-height:1.6}
.slist a:hover{color:var(--c-primary);padding-left:4px}
.slist a.on{color:var(--c-primary);font-weight:600}
.slist .n{display:inline-block;width:19px;height:19px;line-height:19px;text-align:center;background:var(--c-line-l);color:var(--c-sub);border-radius:4px;font-size:11px;margin-right:8px;font-weight:600}
.slist li:nth-child(-n+3) .n{background:var(--c-accent);color:#fff}

.side-cta{background:linear-gradient(135deg,#0d2452,#1a4ba8);border-radius:var(--radius);padding:26px 22px;color:#fff;text-align:center}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-cta p{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:15px;line-height:1.7}
.side-cta .tel{font-size:24px;font-weight:700;letter-spacing:-.5px;margin-bottom:4px;display:block}
.side-cta .sm{font-size:12px;color:rgba(255,255,255,.6);margin-bottom:16px}

/* ---------- 正文富文本 ---------- */
.rich{font-size:15.5px;line-height:2.02;color:var(--c-text)}
.rich h2{font-size:22px;margin:36px 0 15px;padding-left:13px;border-left:4px solid var(--c-primary);line-height:1.5}
.rich h2:first-child{margin-top:0}
.rich h3{font-size:18px;margin:26px 0 11px}
.rich p{margin-bottom:16px}
.rich ul,.rich ol{margin:0 0 18px 0}
.rich li{padding-left:21px;position:relative;margin-bottom:9px}
.rich ul li::before{content:"";position:absolute;left:2px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.rich ol{counter-reset:n}
.rich ol li{counter-increment:n}
.rich ol li::before{content:counter(n);position:absolute;left:0;top:4px;width:18px;height:18px;line-height:18px;text-align:center;background:var(--c-primary);color:#fff;border-radius:4px;font-size:11px;font-weight:700}
.rich strong{color:var(--c-ink)}
.rich a{color:var(--c-primary);border-bottom:1px solid rgba(0,82,217,.3)}
.rich blockquote{background:var(--c-bg-soft);border-left:4px solid var(--c-primary);padding:18px 22px;margin:0 0 20px;border-radius:0 var(--radius-s) var(--radius-s) 0;color:var(--c-text)}
.rich blockquote cite{display:block;margin-top:9px;font-style:normal;font-size:13px;color:var(--c-mute)}
.rich table{margin-bottom:20px;font-size:14.5px}
.rich th,.rich td{border:1px solid var(--c-line);padding:11px 15px;text-align:left}
.rich th{background:var(--c-bg-soft);font-weight:600;color:var(--c-ink);width:180px}

/* 文章元信息 */
.art-hd{padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:26px}
.art-hd h1{font-size:27px;line-height:1.45;margin-bottom:13px}
.art-meta{font-size:13px;color:var(--c-mute);display:flex;flex-wrap:wrap;gap:18px}
.art-meta b{color:var(--c-primary);font-weight:600}

/* 上下篇 */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px;padding-top:24px;border-top:1px solid var(--c-line)}
.pn a,.pn span{display:block;padding:15px 18px;background:var(--c-bg-soft);border-radius:var(--radius-s);font-size:14px;line-height:1.6;border:1px solid transparent}
.pn a:hover{background:var(--c-primary-l);border-color:#c9d8f5}
.pn em{display:block;font-style:normal;font-size:12px;color:var(--c-mute);margin-bottom:4px}
.pn span{color:var(--c-mute)}

/* 列表 */
.nlist li{border-bottom:1px solid var(--c-line);padding:22px 0}
.nlist li:first-child{padding-top:0}
.nlist h3{font-size:19px;margin-bottom:9px;line-height:1.5}
.nlist p{color:var(--c-sub);font-size:14.5px;line-height:1.8;margin-bottom:11px}
.nlist .m{font-size:13px;color:var(--c-mute);display:flex;gap:16px;flex-wrap:wrap}
.nlist .m b{color:var(--c-primary);font-weight:600}

/* FAQ 折叠 */
.faq-item{border:1px solid var(--c-line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:#fff}
.faq-q{padding:17px 52px 17px 20px;font-weight:600;color:var(--c-ink);cursor:pointer;position:relative;font-size:15.5px;line-height:1.6;transition:.2s}
.faq-q:hover{background:var(--c-bg-soft)}
.faq-q::after{content:"";position:absolute;right:22px;top:24px;width:9px;height:9px;border-right:2px solid var(--c-sub);border-bottom:2px solid var(--c-sub);transform:rotate(45deg);transition:.25s}
.faq-item.on .faq-q{background:var(--c-primary-l);color:var(--c-primary)}
.faq-item.on .faq-q::after{transform:rotate(-135deg);top:28px;border-color:var(--c-primary)}
.faq-a{display:none;padding:0 20px 18px;color:var(--c-sub);font-size:14.5px;line-height:1.9;border-top:1px dashed var(--c-line)}
.faq-item.on .faq-a{display:block;padding-top:15px}

/* 参数表 */
.spec th{width:170px;color:var(--c-sub);font-weight:500}
.spec td{color:var(--c-ink)}

/* 数据结果块 */
.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0 30px}
.result-grid div{background:var(--c-primary-l);border-radius:var(--radius);padding:22px 16px;text-align:center}
.result-grid b{display:block;font-size:26px;color:var(--c-primary);line-height:1.2;margin-bottom:5px;letter-spacing:-.5px}
.result-grid span{font-size:13px;color:var(--c-sub);line-height:1.5}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:26px 0}
.step{text-align:center;position:relative;padding-top:38px}
.step::before{content:attr(data-n);position:absolute;top:0;left:50%;transform:translateX(-50%);width:30px;height:30px;line-height:30px;border-radius:50%;background:var(--c-primary);color:#fff;font-weight:700;font-size:14px}
.step::after{content:"";position:absolute;top:15px;left:calc(50% + 22px);right:calc(-50% + 22px);height:2px;background:var(--c-line)}
.step:last-child::after{display:none}
.step span{font-size:13.5px;color:var(--c-text);line-height:1.6;display:block}

/* 痛点列表 */
.pain-list li{background:#fff5f4;border-left:3px solid var(--c-accent);padding:13px 17px;border-radius:0 var(--radius-s) var(--radius-s) 0;margin-bottom:10px;font-size:14.5px;color:var(--c-text);line-height:1.75}
.pain-list li::before{display:none}
.pain-list li{padding-left:17px}

/* 联系信息表 */
.cinfo{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.cinfo-item{display:flex;gap:14px;align-items:flex-start;padding:20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius)}
.cinfo-ico{width:42px;height:42px;border-radius:10px;background:var(--c-primary-l);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;font-weight:700}
.cinfo-item h3{font-size:14px;color:var(--c-mute);font-weight:500;margin-bottom:3px}
.cinfo-item p{font-size:17px;color:var(--c-ink);font-weight:600;line-height:1.5;word-break:break-all}

/* 区域标签 */
.area-tags{display:flex;flex-wrap:wrap;gap:9px}
.area-tags span{padding:6px 15px;background:#fff;border:1px solid var(--c-line);border-radius:18px;font-size:13.5px;color:var(--c-text)}

/* CTA 条 */
.ctabar{background:linear-gradient(115deg,#0d2452,#1a4ba8);color:#fff;padding:44px 0}
.ctabar .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ctabar h2{color:#fff;font-size:25px;margin-bottom:7px}
.ctabar p{color:rgba(255,255,255,.75);font-size:14.5px}
.ctabar-btns{display:flex;gap:13px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:var(--c-bg-deep);color:rgba(255,255,255,.6);font-size:14px;padding:52px 0 0}
.foot-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.25fr;gap:38px;padding-bottom:36px}
.foot-col h4{color:#fff;font-size:16px;margin-bottom:17px;font-weight:600}
.foot-col li{margin-bottom:9px}
.foot-col a{color:rgba(255,255,255,.6);font-size:14px}
.foot-col a:hover{color:#fff}
.foot-about p{line-height:1.9;font-size:13.5px;margin-bottom:16px}
.foot-tel b{display:block;font-size:25px;color:#fff;letter-spacing:-.5px;line-height:1.3}
.foot-tel span{font-size:12.5px}
.foot-ct li{line-height:1.8;font-size:13.5px;margin-bottom:11px}
.foot-ct em{font-style:normal;color:rgba(255,255,255,.42);display:inline-block;width:52px}
.foot-links{border-top:1px solid rgba(255,255,255,.09);padding:16px 0;font-size:13px;line-height:2}
.foot-links b{color:rgba(255,255,255,.8);margin-right:8px;font-weight:500}
.foot-links a{color:rgba(255,255,255,.48);margin-right:16px}
.foot-links a:hover{color:#fff}
.foot-bot{border-top:1px solid rgba(255,255,255,.09);padding:18px 0;font-size:13px;color:rgba(255,255,255,.42);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;line-height:1.8}
.foot-bot a{color:rgba(255,255,255,.42)}
.foot-bot a:hover{color:#fff}

/* ---------- 悬浮客服 ---------- */
.fixbar{position:fixed;right:14px;bottom:96px;z-index:90;display:flex;flex-direction:column;gap:1px}
.fixbar a,.fixbar button{width:54px;height:54px;background:var(--c-primary);color:#fff;border:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;font-size:11px;transition:.2s;position:relative}
.fixbar a:first-child{border-radius:var(--radius-s) var(--radius-s) 0 0}
.fixbar>*:last-child{border-radius:0 0 var(--radius-s) var(--radius-s)}
.fixbar a:hover,.fixbar button:hover{background:var(--c-accent);color:#fff}
.fixbar svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.fixbar .pop{position:absolute;right:62px;top:50%;transform:translateY(-50%);background:var(--c-ink);color:#fff;padding:9px 15px;border-radius:var(--radius-s);white-space:nowrap;font-size:14px;opacity:0;visibility:hidden;transition:.2s;font-weight:600}
.fixbar a:hover .pop,.fixbar button:hover .pop{opacity:1;visibility:visible;right:58px}
#toTop{display:none}

/* ---------- 移动底部条 ---------- */
.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;background:#fff;border-top:1px solid var(--c-line);box-shadow:0 -2px 12px rgba(0,0,0,.07)}
.mbar a{flex:1;text-align:center;padding:9px 0 7px;font-size:11px;color:var(--c-sub);display:block}
.mbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;display:block;margin:0 auto 2px}
.mbar a.hl{color:var(--c-accent)}

/* ---------- 404 ---------- */
.e404{text-align:center;padding:90px 20px}
.e404 b{display:block;font-size:94px;color:var(--c-primary-l);line-height:1;font-weight:800;letter-spacing:-4px}
.e404 h1{font-size:25px;margin:14px 0 11px}
.e404 p{color:var(--c-sub);margin-bottom:26px}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .nav a{padding:0 11px;font-size:14.5px}
  .head-tel{display:none}
  .foot-main{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:34px;padding-top:48px;padding-bottom:48px}
  .hero h1{font-size:29px}
  .layout{grid-template-columns:1fr;gap:26px}
  .side{position:static}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr);gap:18px}
  .step::after{display:none}
  .result-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  body{font-size:14.5px}
  .wrap{padding:0 15px}
  .topbar{line-height:1.7;padding:7px 0;font-size:12px}
  .topbar .wrap{flex-direction:column;align-items:flex-start;gap:2px}
  .topbar-l{white-space:normal}
  .header .wrap{height:60px;gap:12px}
  .logo-mark{width:36px;height:36px;font-size:16px}
  .logo-txt strong{font-size:16px}
  .logo-txt span{font-size:10px}
  .navbtn{display:flex}
  .nav{position:fixed;top:60px;left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;overflow-y:auto;padding:8px 0 30px;margin:0;transform:translateX(-100%);transition:transform .28s;z-index:99}
  .nav.on{transform:translateX(0)}
  .nav a{height:auto;line-height:1;padding:15px 20px;border-bottom:1px solid var(--c-line-l)}
  .nav a::after{display:none}
  .nav a.on{background:var(--c-primary-l)}

  .sec{padding:40px 0}
  .sec-hd{margin-bottom:28px}
  .sec-hd h2{font-size:23px}
  .sec-hd p{font-size:14px}
  .hero h1{font-size:25px}
  .hero p{font-size:14.5px}
  .hero-meta{gap:20px;flex-wrap:wrap}
  .hero-meta div b{font-size:22px}
  .hero-form{padding:22px}
  .grid{gap:14px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .nums{grid-template-columns:repeat(2,1fr);gap:22px}
  .nums div b{font-size:28px}
  .card{padding:20px}
  .phead{padding:34px 0 30px}
  .phead h1{font-size:23px}
  .phead p{font-size:14px}
  .layout{padding:26px 0 40px}
  .rich{font-size:15px;line-height:1.95}
  .rich h2{font-size:19px;margin:28px 0 12px}
  .art-hd h1{font-size:21px}
  .pn{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .result-grid{grid-template-columns:repeat(2,1fr);gap:11px}
  .result-grid b{font-size:21px}
  .cinfo{grid-template-columns:1fr}
  .ctabar{padding:32px 0}
  .ctabar h2{font-size:20px}
  .rich th{width:110px;padding:9px 11px;font-size:13.5px}
  .rich td{padding:9px 11px;font-size:13.5px}
  .foot-main{grid-template-columns:1fr;gap:26px;padding-bottom:24px}
  .footer{padding-top:34px;margin-bottom:56px}
  .fixbar{display:none}
  .mbar{display:flex}
  .e404 b{font-size:64px}
}