/* ========================================================
   WPS Office 下载站 · 套1（根域名）— 科技蓝卡片风
   顶部通栏导航 + 网格卡片 + 渐变Hero
   ======================================================== */
:root{
  --blue-900:#0b2f7a;
  --blue-700:#1352e0;
  --blue-600:#1f63f5;
  --blue-500:#3b7cff;
  --blue-100:#eaf1ff;
  --ink-900:#101828;
  --ink-700:#344054;
  --ink-500:#667085;
  --line:#e4e9f2;
  --bg:#f5f8ff;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 8px 30px rgba(19,82,224,0.10);
  --shadow-lg:0 16px 48px rgba(19,82,224,0.16);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink-700);
  background:var(--bg);
  line-height:1.75;
}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 12px;font-weight:700;}
h1{font-size:40px;line-height:1.3;}
h2{font-size:30px;}
h3{font-size:20px;}
p{margin:0 0 14px;}
a{color:inherit;text-decoration:none;}
img,svg{display:block;}
.container{max-width:1160px;margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section-alt{background:var(--white);}
.eyebrow{
  display:inline-block;color:var(--blue-700);background:var(--blue-100);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:14px;letter-spacing:.5px;
}
.section-head{max-width:720px;margin:0 auto 40px;text-align:center;}
.section-head p{color:var(--ink-500);}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;max-width:1160px;margin:0 auto;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--blue-900);}
.brand svg{width:34px;height:34px;}
.main-nav{display:flex;gap:6px;align-items:center;}
.main-nav a{
  padding:9px 18px;border-radius:10px;font-weight:600;color:var(--ink-700);font-size:15px;
  transition:background .2s,color .2s;
}
.main-nav a:hover{background:var(--blue-100);color:var(--blue-700);}
.main-nav a.active{background:var(--blue-600);color:#fff;}
.header-cta{
  background:var(--blue-600);color:#fff;padding:10px 20px;border-radius:10px;font-weight:700;font-size:14px;
  border:none;cursor:pointer;transition:background .2s,transform .2s;
}
.header-cta:hover{background:var(--blue-700);transform:translateY(-1px);}

/* Hero */
.hero{
  background:radial-gradient(1200px 500px at 80% -10%,#dbe8ff 0%,transparent 60%),
             linear-gradient(180deg,#eef4ff 0%,var(--bg) 100%);
  padding:72px 0 48px;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero-badges{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap;}
.badge{background:var(--white);border:1px solid var(--line);color:var(--blue-700);font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;display:inline-flex;align-items:center;gap:6px;}
.badge svg{width:14px;height:14px;}
.hero p.lead{font-size:18px;color:var(--ink-500);max-width:560px;}
.hero-btns{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:12px;font-weight:700;font-size:15px;cursor:pointer;border:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn svg{width:18px;height:18px;}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:var(--shadow);}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-outline{background:#fff;color:var(--blue-700);border:1.5px solid var(--blue-500);}
.btn-outline:hover{background:var(--blue-100);}
.btn-ghost{background:var(--blue-100);color:var(--blue-700);}
.btn-ghost:hover{background:#dbe8ff;}
.btn:disabled{opacity:.7;cursor:not-allowed;transform:none;}
.hero-stats{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap;}
.hero-stats div{min-width:100px;}
.hero-stats .num{font-size:26px;font-weight:800;color:var(--blue-700);}
.hero-stats .lbl{font-size:13px;color:var(--ink-500);}
.hero-visual{
  background:linear-gradient(145deg,#ffffff,#eef3ff);border:1px solid var(--line);
  border-radius:20px;padding:26px;box-shadow:var(--shadow-lg);
}
.hero-visual .mock-bar{display:flex;gap:6px;margin-bottom:16px;}
.hero-visual .mock-bar span{width:10px;height:10px;border-radius:50%;background:#dbe3f2;}
.hero-visual .mock-row{height:14px;background:#eef2fb;border-radius:6px;margin-bottom:10px;}
.hero-visual .mock-row.w60{width:60%;}
.hero-visual .mock-row.w80{width:80%;}
.hero-visual .mock-row.w40{width:40%;}
.hero-visual .mock-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:16px;}
.hero-visual .mock-grid div{background:var(--blue-100);border-radius:10px;height:52px;}

/* Feature grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0ff;}
.card .icon-wrap{
  width:52px;height:52px;border-radius:12px;background:var(--blue-100);color:var(--blue-700);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card .icon-wrap svg{width:26px;height:26px;}
.card h3{margin-bottom:8px;}
.card p{color:var(--ink-500);font-size:14.5px;margin-bottom:0;}

/* Platform download cards */
.platform-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  display:flex;flex-direction:column;gap:12px;
}
.platform-card .ptop{display:flex;align-items:center;gap:14px;}
.platform-card .picon{width:48px;height:48px;border-radius:12px;background:var(--blue-900);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.platform-card .picon svg{width:26px;height:26px;}
.platform-card h3{margin:0;}
.platform-card .ver{font-size:12.5px;color:var(--ink-500);}
.platform-card p{color:var(--ink-500);font-size:14px;flex:1;}
.platform-card .btn{width:100%;}

/* Deep feature rows */
.feature-row{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center;padding:36px 0;border-bottom:1px solid var(--line);}
.feature-row:last-child{border-bottom:none;}
.feature-row.reverse{grid-template-columns:1.1fr .9fr;}
.feature-row.reverse .frow-visual{order:2;}
.feature-row.reverse .frow-text{order:1;}
.frow-visual{
  background:linear-gradient(145deg,#eef3ff,#dbe8ff);border-radius:18px;height:220px;
  display:flex;align-items:center;justify-content:center;color:var(--blue-700);
}
.frow-visual svg{width:88px;height:88px;}
.frow-text ul{padding-left:20px;color:var(--ink-500);font-size:14.5px;margin:14px 0 0;}
.frow-text li{margin-bottom:8px;}

/* Testimonials */
.testi-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px;}
.testi-stars{color:#f5a623;display:flex;gap:2px;margin-bottom:12px;}
.testi-stars svg{width:16px;height:16px;}
.testi-card p{color:var(--ink-700);font-size:14.5px;}
.testi-user{display:flex;align-items:center;gap:12px;margin-top:16px;}
.testi-avatar{width:42px;height:42px;border-radius:50%;background:var(--blue-600);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;}
.testi-name{font-weight:700;color:var(--ink-900);font-size:14px;}
.testi-role{font-size:12.5px;color:var(--ink-500);}

/* Stats band */
.stats-band{background:var(--blue-900);color:#fff;border-radius:20px;padding:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stats-band .num{font-size:34px;font-weight:800;color:#fff;}
.stats-band .lbl{font-size:13.5px;color:#c7d6ff;margin-top:6px;}
.badges-row{display:flex;gap:24px;flex-wrap:wrap;margin-top:30px;justify-content:center;}
.badges-row .b-item{display:flex;align-items:center;gap:8px;color:var(--ink-500);font-size:14px;}
.badges-row svg{width:20px;height:20px;color:var(--blue-700);}

/* Comparison table */
.compare-table{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.compare-table th,.compare-table td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;font-size:14.5px;}
.compare-table th{background:var(--blue-900);color:#fff;font-weight:700;}
.compare-table tr:last-child td{border-bottom:none;}
.compare-table td.yes{color:#12875a;font-weight:700;}
.compare-table td.no{color:var(--ink-500);}
.compare-table tr:nth-child(even){background:#fafcff;}

/* Steps */
.steps{counter-reset:step;}
.step-item{display:flex;gap:20px;padding:22px 0;border-bottom:1px dashed var(--line);}
.step-item:last-child{border-bottom:none;}
.step-num{
  flex-shrink:0;width:42px;height:42px;border-radius:50%;background:var(--blue-600);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;
}
.step-body h3{margin-bottom:6px;}
.step-body p{color:var(--ink-500);margin-bottom:0;font-size:14.5px;}

/* Requirements table */
.req-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.req-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;}
.req-card table{width:100%;border-collapse:collapse;margin-top:10px;}
.req-card td{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-700);}
.req-card td:first-child{color:var(--ink-500);width:38%;}
.req-card tr:last-child td{border-bottom:none;}

/* Changelog */
.changelog-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin-bottom:16px;}
.changelog-item .cl-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-wrap:wrap;gap:8px;}
.changelog-item .cl-ver{font-weight:800;color:var(--blue-700);font-size:16px;}
.changelog-item .cl-date{font-size:13px;color:var(--ink-500);}
.changelog-item ul{padding-left:20px;color:var(--ink-500);font-size:14.5px;margin:0;}
.changelog-item li{margin-bottom:6px;}

/* FAQ */
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin-bottom:14px;}
.faq-item h3{display:flex;gap:10px;align-items:flex-start;font-size:17px;margin-bottom:10px;}
.faq-item h3 svg{width:20px;height:20px;color:var(--blue-600);flex-shrink:0;margin-top:2px;}
.faq-item p{color:var(--ink-500);font-size:14.5px;margin:0;padding-left:30px;}

/* Article (zh-cn page) */
.article-wrap{max-width:840px;margin:0 auto;}
.article-wrap h2{margin-top:40px;}
.article-wrap h3{margin-top:24px;color:var(--blue-700);}
.article-wrap p{color:var(--ink-700);font-size:15.5px;}
.article-cta{
  background:linear-gradient(120deg,var(--blue-700),var(--blue-500));border-radius:18px;padding:36px;color:#fff;
  text-align:center;margin:36px 0;
}
.article-cta h3{color:#fff;}
.article-cta p{color:#dce8ff;}
.callout{background:var(--blue-100);border-left:4px solid var(--blue-600);border-radius:8px;padding:16px 20px;margin:20px 0;font-size:14.5px;color:var(--ink-700);}
.toc{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:20px 26px;margin-bottom:30px;}
.toc h3{margin-bottom:10px;font-size:16px;}
.toc ol{padding-left:20px;margin:0;color:var(--blue-700);font-size:14.5px;}
.toc li{margin-bottom:6px;}

/* Footer */
.site-footer{background:var(--ink-900);color:#c6ccd8;padding:50px 0 26px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:30px;border-bottom:1px solid #26304a;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:12px;}
.footer-brand svg{width:28px;height:28px;}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px;}
.footer-col a{display:block;color:#98a2b3;font-size:14px;margin-bottom:10px;}
.footer-col a:hover{color:#fff;}
.footer-security{display:flex;align-items:center;gap:10px;background:#182033;border-radius:10px;padding:14px 18px;margin-top:26px;font-size:13.5px;color:#a7e3c1;}
.footer-security svg{width:20px;height:20px;flex-shrink:0;color:#2fd484;}
.footer-bottom{text-align:center;font-size:12.5px;color:#7d8698;padding-top:22px;}

@keyframes spin{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}

@media (max-width:900px){
  .hero-inner,.grid-3,.grid-4,.req-grid,.feature-row,.feature-row.reverse{grid-template-columns:1fr;}
  .feature-row.reverse .frow-visual,.feature-row.reverse .frow-text{order:0;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .main-nav{display:none;}
  .footer-top{grid-template-columns:1fr 1fr;}
  h1{font-size:30px;}
}