:root{
  --red:#B02A30; --red-dark:#8A2028; --red-deep:#5E1418;
  --ink:#141416; --gray:#6E6E73; --line:#ECECEE; --bg:#FAFAFA;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.7}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}
/* 滚动渐入 */
.rv{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}

/* ===== 导航 ===== */
nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s}
nav .bar{display:flex;align-items:center;height:76px}
nav .logo{display:flex;align-items:center;gap:12px}
nav .logo img{height:44px;background:rgba(255,255,255,.92);border-radius:6px;padding:3px}
nav .logo b{color:#fff;font-size:18px}
nav .links{display:flex;gap:30px;margin-left:auto;align-items:center}
nav .links a{color:rgba(255,255,255,.85);font-size:14.5px;font-weight:500;padding:6px 0;border-bottom:2px solid transparent}
nav .links a:hover{color:#fff}
nav .links a.on{color:#fff;border-color:var(--red)}
nav .links .q{border:1px solid rgba(255,255,255,.5);border-bottom:1px solid rgba(255,255,255,.5);padding:7px 18px;border-radius:20px}
nav .links .q:hover{background:rgba(255,255,255,.1)}
nav.solid{background:rgba(255,255,255,.97);box-shadow:0 2px 16px rgba(0,0,0,.08);backdrop-filter:blur(8px)}
nav.solid .logo b{color:var(--ink)}
nav.solid .links a{color:#444}
nav.solid .links a.on{color:var(--red);border-color:var(--red)}
nav.solid .links .q{border-color:var(--red);color:var(--red)}
/* 汉堡 */
.burger{display:none;margin-left:auto;width:42px;height:42px;border:none;background:none;cursor:pointer;position:relative;z-index:120}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:6px auto;transition:.3s}
nav.solid .burger span{background:var(--ink)}
.drawer{position:fixed;inset:0;background:rgba(20,20,22,.98);z-index:99;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;opacity:0;pointer-events:none;transition:.3s;padding-top:76px}
.drawer.open{opacity:1;pointer-events:auto}
.drawer a{color:#fff;font-size:20px;padding:12px 24px}
.drawer a.on{color:#E86A6E}
.drawer .q{border:1px solid var(--red);border-radius:24px;margin-top:12px}

/* ===== 首页 Hero ===== */
.hero{position:relative;height:100vh;min-height:640px;display:flex;align-items:flex-end;overflow:hidden;background:#0c0a0a}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,10,10,.25) 0%,rgba(12,10,10,.05) 40%,rgba(12,10,10,.9) 100%)}
.hero .glow{position:absolute;right:-10%;bottom:-20%;width:60%;height:70%;background:radial-gradient(closest-side,rgba(176,42,48,.45),transparent);filter:blur(20px)}
.hero .txt{position:relative;z-index:2;padding-bottom:13vh}
.hero .kick{display:flex;align-items:center;gap:14px;color:rgba(255,255,255,.7);font-size:13px;letter-spacing:5px;margin-bottom:22px}
.hero .kick::before{content:"";width:52px;height:2px;background:var(--red)}
.hero h1{color:#fff;font-size:clamp(34px,6.2vw,76px);line-height:1.14;font-weight:700;letter-spacing:1px}
.hero h1 em{font-style:normal;color:#E86A6E}
.hero p{color:rgba(255,255,255,.75);font-size:clamp(15px,1.4vw,18px);margin-top:24px;max-width:620px}
.hero .acts{margin-top:40px;display:flex;gap:18px;flex-wrap:wrap}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;color:rgba(255,255,255,.55);font-size:11px;letter-spacing:3px;text-align:center}
.scroll-cue::after{content:"";display:block;width:1px;height:36px;background:linear-gradient(rgba(255,255,255,.6),transparent);margin:8px auto 0;animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ===== 内页 Hero ===== */
.page-hero{position:relative;min-height:380px;display:flex;align-items:flex-end;overflow:hidden;background:var(--ink)}
.page-hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,10,10,.35),rgba(12,10,10,.85))}
.page-hero .txt{position:relative;z-index:2;padding:110px 0 56px;color:#fff}
.page-hero .crumb{font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:2px;margin-bottom:14px}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);font-weight:700;line-height:1.2}
.page-hero .sub{color:rgba(255,255,255,.75);margin-top:14px;max-width:640px;font-size:15px}

/* ===== 按钮 ===== */
.btn{display:inline-block;padding:14px 36px;font-size:15px;font-weight:500;border-radius:2px;transition:.25s}
.btn-r{background:var(--red);color:#fff}
.btn-r:hover{background:var(--red-dark)}
.btn-o{border:1px solid rgba(255,255,255,.55);color:#fff;border-radius:2px}
.btn-o:hover{background:rgba(255,255,255,.1)}
.btn-line{border:1px solid var(--ink);color:var(--ink);border-radius:2px}
.btn-line:hover{background:var(--ink);color:#fff}

/* ===== logo 跑马灯 ===== */
.marq{background:var(--ink);padding:26px 0;overflow:hidden;border-bottom:1px solid #26262a}
.marq-track{display:flex;gap:84px;width:max-content;animation:marq 30s linear infinite}
.marq-track img{height:30px;object-fit:contain;filter:grayscale(1) brightness(1.6);opacity:.65}
@keyframes marq{to{transform:translateX(-50%)}}

/* ===== 区块标题 ===== */
.sec{padding:100px 0}
.sec.tight{padding:70px 0}
.sec-t{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:56px;gap:24px}
.sec-t .l .k{color:var(--red);font-size:13px;letter-spacing:4px;font-weight:600;margin-bottom:12px}
.sec-t h2{font-size:clamp(28px,3.4vw,42px);line-height:1.2;font-weight:700}
.sec-t .r{color:var(--gray);font-size:14.5px;max-width:360px;text-align:right}

/* ===== 编号服务行（首页） ===== */
.rows{border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:110px 1fr 1.2fr 60px;gap:28px;align-items:center;padding:34px 8px;border-bottom:1px solid var(--line);cursor:pointer;transition:.25s;position:relative}
.row .no{font-size:15px;color:#C9C9CE;font-weight:600;letter-spacing:2px}
.row h3{font-size:24px;font-weight:600;transition:.25s}
.row p{color:var(--gray);font-size:14.5px;padding-right:8px}
.row .arr{font-size:22px;color:#C9C9CE;transition:.25s;text-align:right}
.row .prev{position:absolute;right:90px;top:50%;transform:translateY(-50%) scale(.9);width:220px;height:140px;border-radius:8px;overflow:hidden;opacity:0;pointer-events:none;transition:.3s;box-shadow:0 18px 44px rgba(0,0,0,.22);z-index:5}
.row .prev img{width:100%;height:100%;object-fit:cover}
.row:hover{background:var(--bg)}
.row:hover h3{color:var(--red);transform:translateX(6px)}
.row:hover .no,.row:hover .arr{color:var(--red)}
.row:hover .prev{opacity:1;transform:translateY(-50%) scale(1)}

/* ===== 数据带 ===== */
.band{background:linear-gradient(115deg,var(--red-deep) 0%,var(--red) 55%,#C74A50 100%);color:#fff;padding:90px 0}
.band .g{display:grid;grid-template-columns:repeat(4,1fr);gap:40px}
.bitem b{font-size:clamp(40px,4.6vw,64px);font-weight:700;line-height:1;display:block}
.bitem b small{font-size:18px;font-weight:500}
.bitem span{display:block;margin-top:12px;color:rgba(255,255,255,.8);font-size:14px}
.bitem+.bitem{border-left:1px solid rgba(255,255,255,.2);padding-left:40px}

/* ===== 行业磁贴 ===== */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tile{position:relative;height:300px;border-radius:10px;overflow:hidden;cursor:pointer;display:block}
.tile img{width:100%;height:100%;object-fit:cover;transition:.5s}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05) 30%,rgba(0,0,0,.78) 100%)}
.tile .tx{position:absolute;left:26px;bottom:22px;z-index:2;color:#fff;right:26px}
.tile .tx .k{font-size:12px;letter-spacing:2px;color:rgba(255,255,255,.65)}
.tile .tx h3{font-size:23px;margin-top:4px}
.tile .tx p{font-size:13px;color:rgba(255,255,255,.8);margin-top:6px;max-height:0;overflow:hidden;transition:.4s}
.tile:hover img{transform:scale(1.06)}
.tile:hover .tx p{max-height:80px}

/* ===== 案例（交错大图块） ===== */
.case{display:grid;grid-template-columns:1.15fr 1fr;gap:64px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line)}
.case:nth-child(even){direction:rtl}
.case:nth-child(even)>*{direction:ltr}
.case .pic{border-radius:12px;overflow:hidden;height:400px}
.case .pic img{width:100%;height:100%;object-fit:cover}
.case .no{color:var(--red);font-size:14px;letter-spacing:3px;font-weight:600}
.case h3{font-size:clamp(22px,2.4vw,32px);margin:14px 0 16px;line-height:1.3}
.case p{color:var(--gray);font-size:15px}
.case .tags{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.case .tags span{border:1px solid var(--line);border-radius:16px;padding:5px 16px;font-size:12.5px;color:#555}

/* ===== 左右交替图文（服务/行业详情） ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:54px 0;border-bottom:1px solid var(--line)}
.split:nth-child(even){direction:rtl}
.split:nth-child(even)>*{direction:ltr}
.split .pic{border-radius:12px;overflow:hidden;height:360px;background:#fff}
.split .pic img{width:100%;height:100%;object-fit:cover}
.split .pic.shot{border:1px solid var(--line);background:#fff;padding:18px}
.split .pic.shot img{object-fit:contain}
.split .no{color:var(--red);font-size:13px;letter-spacing:3px;font-weight:600}
.split h3{font-size:clamp(22px,2.2vw,30px);margin:12px 0 14px}
.split p{color:var(--gray);font-size:14.5px;margin-bottom:16px}
.feats li{display:flex;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.feats li::before{content:"—";color:var(--red);font-weight:700}
.feats li b{font-weight:600}

/* ===== 工厂拼贴 ===== */
.fac{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.fac .col1 .ph1{border-radius:12px;overflow:hidden;height:320px}
.fac .col1 .p2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.fac .col1 .p2 .it{height:150px;border-radius:10px;overflow:hidden}
.fac img{width:100%;height:100%;object-fit:cover}
.fac h2{font-size:clamp(26px,3vw,38px);line-height:1.25;margin:12px 0 20px}
.fac .lead{color:var(--gray);font-size:15px;margin-bottom:26px}
.fac .pts li{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.fac .pts b{color:var(--red);font-weight:600;flex-shrink:0;width:76px}

/* ===== 时间线（关于页） ===== */
.tl{position:relative;padding-left:34px;border-left:2px solid var(--line)}
.tl .it{position:relative;padding-bottom:42px}
.tl .it::before{content:"";position:absolute;left:-43px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px #F6DBDC}
.tl .yr{color:var(--red);font-size:20px;font-weight:700}
.tl h3{font-size:19px;margin:6px 0 8px}
.tl p{color:var(--gray);font-size:14.5px}

/* ===== 客户评价 ===== */
.quote{background:var(--bg);border-radius:12px;padding:40px 44px;position:relative}
.quote::before{content:"“";position:absolute;left:24px;top:6px;font-size:72px;color:#F0CDD0;font-family:Georgia,serif;line-height:1}
.quote p{font-size:16px;color:#333;position:relative;z-index:1}
.quote .who{margin-top:16px;font-size:13.5px;color:var(--gray)}
.quote .who b{color:var(--ink)}

/* ===== 联系页 ===== */
.ct-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ct-card{background:var(--bg);border-radius:12px;padding:34px}
.ct-card .k{color:var(--red);font-size:12.5px;letter-spacing:3px;font-weight:600;margin-bottom:12px}
.ct-card h3{font-size:21px;margin-bottom:6px}
.ct-card .tel{font-size:26px;font-weight:700;margin:8px 0 4px}
.ct-card p{color:var(--gray);font-size:14px}
.form{background:var(--ink);color:#fff;border-radius:14px;padding:52px;margin-top:70px}
.form h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:10px}
.form .sub{color:rgba(255,255,255,.6);font-size:14.5px;margin-bottom:34px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.fld label{display:block;font-size:13px;color:rgba(255,255,255,.65);margin-bottom:8px}
.fld input,.fld select,.fld textarea{width:100%;background:#232327;border:1px solid #333;border-radius:6px;color:#fff;padding:13px 16px;font-size:14.5px;font-family:inherit;outline:none;transition:.2s}
.fld input:focus,.fld textarea:focus{border-color:var(--red)}
.fld.full{grid-column:1/-1}
.form .send{margin-top:26px}

/* ===== CTA / 页脚 ===== */
.cta{background:linear-gradient(100deg,var(--red-deep),var(--red) 60%,#C74A50);color:#fff;text-align:center;padding:70px 24px}
.cta h2{font-size:clamp(24px,3vw,32px);margin-bottom:10px}
.cta p{color:rgba(255,255,255,.85);margin-bottom:28px;font-size:15px}
.cta .btn{background:#fff;color:var(--red)}
footer{background:var(--ink);color:#8E8E93;padding:90px 0 0;font-size:14px}
.ft{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding-bottom:70px}
.ft h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:1px}
.ft li{padding:5px 0}
.ft a:hover{color:#fff}
.ft .brand img{height:56px;background:#fff;border-radius:8px;padding:4px;margin-bottom:18px}
.ft .brand .slogan{color:#fff;font-size:22px;font-weight:600;line-height:1.4}
.ft .brand .slogan em{font-style:normal;color:#E86A6E}
.ft .contact b{color:#fff;font-size:17px;font-weight:600}
.copy{border-top:1px solid #2a2a2c;padding:22px 0;display:flex;justify-content:space-between;font-size:12.5px;color:#5c5c60;gap:12px;flex-wrap:wrap}
.copy a{color:inherit}
.copy a:hover{color:#fff}

/* ===== 荣誉墙 ===== */
.honors-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
@media(max-width:960px){.honors-grid{grid-template-columns:repeat(2,1fr)}}

/* ===== AI定制开发：对比表 ===== */
.vs{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.vs .vrow{display:grid;grid-template-columns:1.1fr 1fr 1fr;border-top:1px solid var(--line)}
.vs .vrow:first-child{border-top:none}
.vs .vrow>div{padding:18px 24px;font-size:14.5px}
.vs .vrow>div+div{border-left:1px solid var(--line)}
.vs .vhead{background:var(--ink);color:#fff}
.vs .vhead>div{font-size:15px;font-weight:600}
.vs .vhead .ai{color:#FF9B9E}
.vs .dim{color:var(--gray)}
.vs .win{background:#FCF6F6;font-weight:600}
.vs .win b{color:var(--red)}
.vs .k{font-weight:600}

/* ===== AI定制开发：流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:st}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 24px;position:relative}
.step::before{counter-increment:st;content:counter(st,decimal-leading-zero);display:block;font-size:26px;font-weight:700;color:#F0CDD0;margin-bottom:12px}
.step h3{font-size:17.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--gray)}
.step .day{position:absolute;right:20px;top:22px;font-size:12px;color:var(--red);border:1px solid #F0CDD0;border-radius:12px;padding:2px 10px}

/* ===== AI定制开发：能力卡（小） ===== */
.minis{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.mini{border:1px solid var(--line);border-radius:12px;padding:26px;background:#fff;transition:.25s}
.mini:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(176,42,48,.1)}
.mini h3{font-size:17.5px;margin-bottom:8px}
.mini p{font-size:13.5px;color:var(--gray)}
.mini .tagline{display:inline-block;font-size:11.5px;letter-spacing:1px;color:var(--red);background:#FCF2F3;border-radius:10px;padding:2px 10px;margin-bottom:12px}

/* ===== 说明脚注 ===== */
.note{margin-top:28px;font-size:12.5px;color:#9a9a9e;line-height:1.8;border-left:3px solid var(--line);padding-left:14px}

/* ===== 响应式 ===== */
@media(max-width:960px){
 .wrap{padding:0 20px}
 nav .links{display:none}
 .burger{display:block}
 .row{grid-template-columns:56px 1fr;grid-auto-rows:auto;gap:8px 16px;padding:24px 4px}
 .row p,.row .arr,.row .prev{display:none}
 .row h3{font-size:19px}
 .band{padding:60px 0}
 .band .g,.tiles,.case,.split,.fac,.ct-grid,.fgrid{grid-template-columns:1fr}
 .bitem+.bitem{border-left:none;padding-left:0;border-top:1px solid rgba(255,255,255,.2);padding-top:30px}
 .sec{padding:64px 0}
 .sec-t{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:36px}
 .sec-t .r{text-align:left}
 .case,.split{gap:28px;padding:36px 0}
 .case .pic,.split .pic{height:240px}
 .fac{gap:30px}
 .tl{padding-left:26px}
 .form{padding:34px 24px;margin-top:44px}
 .quote{padding:30px 24px}
 .page-hero .txt{padding:96px 0 44px}
 .copy{justify-content:center;text-align:center}
 .steps,.minis{grid-template-columns:1fr}
 .vs .vrow{grid-template-columns:1fr}
 .vs .vrow>div+div{border-left:none;border-top:1px dashed var(--line)}
 .vs .vhead{display:none}
 .vs .vrow>div:first-child{background:var(--bg);font-size:13px;letter-spacing:1px}
}

/* ===== 示意图（四步交付流程图） ===== */
.flowfig{margin:0 0 46px}
.flowfig img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:14px}
.flowfig figcaption{margin-top:14px;font-size:13px;color:var(--gray);text-align:center}
@media(max-width:960px){
 .flowfig{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}
 .flowfig img{width:auto;min-width:860px;border:none}
 .flowfig figcaption{text-align:left}
}

/* ===== 首页 AI 定制开发专题横幅 ===== */
.ai-feature{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;background:linear-gradient(120deg,#1C1C1E 0%,#2A1416 55%,#3A1418 100%);border-radius:16px;padding:52px 56px;color:#fff}
.ai-feature .af-k{font-size:12px;letter-spacing:3px;color:#E86A6E;font-weight:600}
.ai-feature h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin:12px 0 14px}
.ai-feature h2 em{font-style:normal;color:#E86A6E}
.ai-feature p{color:rgba(255,255,255,.75);font-size:14.5px;margin-bottom:20px}
.ai-feature .af-pts{display:flex;gap:26px;flex-wrap:wrap;margin-bottom:26px}
.ai-feature .af-pts li{font-size:14px;color:rgba(255,255,255,.8)}
.ai-feature .af-pts b{display:block;font-size:26px;color:#fff;font-weight:700}
.ai-feature .btn-r{background:var(--red)}
.ai-feature .af-pic{border-radius:12px;overflow:hidden;height:280px}
.ai-feature .af-pic img{width:100%;height:100%;object-fit:cover}
@media(max-width:960px){.ai-feature{grid-template-columns:1fr;padding:30px 22px;gap:26px}.ai-feature .af-pic{height:200px}}

/* ===== AI 页：单图配平右栏 ===== */
.fac .ph1.ph-tall{height:440px}
@media(max-width:960px){.fac .ph1.ph-tall{height:240px}}