/* WPS 办公专区 · 明亮扁平 · 红色点缀（参考金山办公官网信息架构） */
:root{
  --red:#D7282F; --red-dk:#B51F25; --red-lt:#FDEEEE;
  --ink:#1F2329; --ink2:#4E5969; --mute:#86909C;
  --line:#E5E6EB; --bg:#FFFFFF; --bg2:#F7F8FA;
  --navy:#1F3A5F; --r:12px;
  --sh:0 4px 20px rgba(31,35,41,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.w{max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶栏 */
.wh{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.wh .w{display:flex;align-items:center;height:64px;gap:28px}
.wh-brand{display:flex;align-items:center;gap:10px;font-weight:600}
.wh-brand img{width:34px;height:34px}
.wh-brand small{display:block;font-size:11px;color:var(--mute);font-weight:400;letter-spacing:.08em}
.wh-sep{width:1px;height:22px;background:var(--line)}
.wh-zone{color:var(--red);font-weight:600;font-size:15px}
.wh nav{display:flex;gap:4px;margin-left:auto}
.wh nav a{padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink2)}
.wh nav a:hover{background:var(--bg2);color:var(--ink)}
.wh nav a.on{color:var(--red);font-weight:600}
.wh-cta{background:var(--red);color:#fff;padding:9px 18px;border-radius:8px;font-size:14px;font-weight:500}
.wh-cta:hover{background:var(--red-dk)}
.wh-tg{display:none;background:none;border:0;font-size:22px;cursor:pointer;margin-left:auto}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 26px;border-radius:8px;font-size:15px;font-weight:500;transition:.2s}
.btn-r{background:var(--red);color:#fff}.btn-r:hover{background:var(--red-dk)}
.btn-o{border:1px solid var(--line);background:#fff;color:var(--ink)}.btn-o:hover{border-color:var(--red);color:var(--red)}

/* Hero */
.hero{background:linear-gradient(180deg,#FFF5F5 0%,#fff 100%);padding:80px 0 64px;overflow:hidden}
.hero .w{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;background:var(--red-lt);color:var(--red);font-size:13px;font-weight:500;padding:5px 12px;border-radius:99px;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--red)}
.hero p.lead{font-size:17px;color:var(--ink2);max-width:560px;margin-bottom:30px}
.hero .acts{display:flex;gap:12px;flex-wrap:wrap}
/* 官方授权证书认证卡片 */
.hero-card{background:#fff;border:1px solid #EAE3DE;border-radius:20px;box-shadow:0 12px 36px rgba(31,35,41,0.08), 0 2px 8px rgba(215,40,47,0.04);padding:30px;position:relative;overflow:hidden}
.hero-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--red) 0%, #B08D57 100%)}
.cert{display:grid;grid-template-columns:230px 1fr;gap:26px;align-items:center}
.cert-frame{position:relative;border-radius:10px;padding:6px;background:linear-gradient(145deg, #FAF8F5, #FFFFFF);border:1px solid #E6D7C8;box-shadow:0 10px 25px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.04);cursor:zoom-in;transition:transform .25s ease, box-shadow .25s ease}
.cert-frame:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 16px 36px rgba(0,0,0,0.15), 0 4px 12px rgba(215,40,47,0.1)}
.cert-frame img{width:100%;border-radius:6px;border:1px solid #ECECEC;display:block}
.cert-frame .zoom-hint{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);background:rgba(31,35,41,0.85);backdrop-filter:blur(4px);color:#fff;font-size:11px;padding:4px 10px;border-radius:99px;white-space:nowrap;opacity:0;transition:opacity .2s ease;pointer-events:none}
.cert-frame:hover .zoom-hint{opacity:1}
.cert-badge{display:inline-flex;align-items:center;gap:6px;background:#FFF4E6;border:1px solid #F0D2B0;color:#A35C00;font-size:12px;font-weight:600;padding:3px 10px;border-radius:6px;margin-bottom:10px}
.cert h4{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:4px}
.cert .cert-sub{font-size:12px;letter-spacing:0.04em;color:var(--mute);text-transform:uppercase;margin-bottom:14px}
.cert dl{display:grid;grid-template-columns:72px 1fr;gap:6px 12px;font-size:13px;color:var(--ink);line-height:1.6}
.cert dt{color:var(--mute)}
.cert dd{font-weight:500}
.cert dd code{font-family:Consolas, Monaco, monospace;background:#FDEEEE;color:var(--red);padding:2px 8px;border-radius:4px;font-weight:600;font-size:12px}
.cert-verify{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:12px;color:var(--ink2);display:flex;align-items:center;gap:6px}

/* 区块 */
.sec{padding:80px 0}.sec.g{background:var(--bg2)}
.sh{text-align:center;margin-bottom:48px}
.sh h2{font-size:32px;font-weight:700;margin-bottom:10px}
.sh p{color:var(--ink2);max-width:680px;margin:0 auto}
.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(--line);border-radius:var(--r);padding:28px;transition:.2s}
.card:hover{box-shadow:var(--sh);border-color:#F3C5C7;transform:translateY(-2px)}
.ic{width:48px;height:48px;border-radius:12px;background:var(--red-lt);color:var(--red);display:grid;place-items:center;font-size:22px;font-weight:700;margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--ink2);font-size:14px}
.card ul{list-style:none;margin-top:14px;font-size:14px;color:var(--ink2)}
.card li{padding-left:18px;position:relative;margin:6px 0}
.card li:before{content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--red)}
.more{display:inline-block;margin-top:14px;color:var(--red);font-size:14px;font-weight:500}

/* 产品大卡 */
.prod{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:40px 0;border-bottom:1px solid var(--line)}
.prod:last-child{border:0}
.prod.rev .prod-tx{order:2}
.prod h3{font-size:28px;margin-bottom:10px}
.prod .sub{color:var(--red);font-weight:500;margin-bottom:14px}
.prod-vis{background:linear-gradient(135deg,#FFF1F1,#F7F8FA);border-radius:16px;aspect-ratio:16/10;display:grid;place-items:center;position:relative;overflow:hidden}
.prod-vis .mk{font-size:64px;font-weight:800;color:var(--red);opacity:.9;letter-spacing:-.02em}
.prod-vis .mk small{display:block;font-size:14px;color:var(--ink2);font-weight:500;text-align:center;letter-spacing:.1em}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips span{font-size:13px;background:var(--bg2);border:1px solid var(--line);padding:4px 10px;border-radius:6px;color:var(--ink2)}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats b{display:block;font-size:30px;color:var(--red)}
.stats span{font-size:14px;color:var(--ink2)}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);font-size:14px}
.tbl th,.tbl td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left}
.tbl th{background:var(--bg2);font-weight:600}
.tbl td:not(:first-child){text-align:center}
.tbl th:not(:first-child){text-align:center}
.y{color:var(--red);font-weight:700}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;counter-increment:s}
.step:before{content:"0" counter(s);display:block;font-size:24px;font-weight:700;color:var(--red);margin-bottom:8px}
.step h4{margin-bottom:6px}.step p{font-size:13px;color:var(--ink2)}

/* Tabs */
.tabs{display:flex;justify-content:center;gap:8px;margin-bottom:32px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:#fff;padding:8px 18px;border-radius:99px;font-size:14px;cursor:pointer;color:var(--ink2)}
.tabs button.on{background:var(--red);border-color:var(--red);color:#fff}

/* 新闻 */
.news-item{display:grid;grid-template-columns:110px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line)}
.news-item .d{color:var(--mute);font-size:13px}
.news-item .d b{display:block;font-size:26px;color:var(--ink);font-weight:600}
.news-item h3{font-size:19px;margin-bottom:6px}
.news-item h3 a:hover{color:var(--red)}
.news-item p{color:var(--ink2);font-size:14px}
.cat{display:inline-block;font-size:12px;color:var(--red);background:var(--red-lt);padding:2px 8px;border-radius:4px;margin-right:8px}
.art{max-width:780px;margin:0 auto;padding:56px 24px 80px}
.art h1{font-size:32px;line-height:1.35;margin:12px 0}
.art .meta{color:var(--mute);font-size:13px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:28px}
.art p{margin-bottom:18px;color:#333;font-size:16px}
.art h2{font-size:21px;margin:30px 0 12px}
.art .src{background:var(--bg2);border-left:3px solid var(--red);padding:14px 18px;font-size:13px;color:var(--ink2);margin-top:32px}

/* CTA & 页脚 */
.cta{background:var(--red);color:#fff;border-radius:16px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{font-size:28px}.cta p{opacity:.9}
.cta .btn{background:#fff;color:var(--red)}
.note{font-size:12px;color:var(--mute);margin-top:16px}
.wf{background:#1F2329;color:#C9CDD4;padding:48px 0 28px;font-size:14px}
.wf .w>div:first-child{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.wf h5{color:#fff;font-size:15px;margin-bottom:12px}
.wf a{display:block;margin:6px 0}.wf a:hover{color:#fff}
.wf .cp{border-top:1px solid #3A3F47;padding-top:20px;font-size:12px;color:#86909C}

/* 灯箱 */
.lb{position:fixed;inset:0;background:rgba(0,0,0,.8);display:none;place-items:center;z-index:99;cursor:zoom-out}
.lb.on{display:grid}.lb img{max-height:90vh;border-radius:8px}

@media(max-width:900px){
  .hero .w,.prod,.g2,.g3,.g4,.stats,.cert{grid-template-columns:1fr}
  .cert-frame{max-width:300px;margin:0 auto}
  .steps{grid-template-columns:1fr 1fr}
  .prod.rev .prod-tx{order:0}
  .hero h1{font-size:34px}
  .wh nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:12px;border-bottom:1px solid var(--line)}
  .wh nav.open{display:flex}.wh-tg{display:block}.wh-cta,.wh-sep,.wh-zone{display:none}
  .wf .w>div:first-child{grid-template-columns:1fr 1fr}
  .news-item{grid-template-columns:1fr;gap:6px}
}