/* ===== WPS Office下载 (kqp-wps.com.cn) - 主样式表 ===== */
:root {
  --primary: #2b5797;
  --primary-dark: #1a3a6b;
  --primary-light: #4a7fc5;
  --accent: #d83b01;
  --accent-light: #ff5722;
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --text: #212121;
  --text-light: #616161;
  --border: #e0e0e0;
  --shadow: 0 2px 16px rgba(43,87,151,.1);
  --radius: 12px;
  --max-w: 1200px;
  --font: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7}

.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

.navbar{background:linear-gradient(135deg,var(--primary-dark),var(--primary));position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.navbar .logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:1.5rem;font-weight:700;text-decoration:none}
.navbar .logo span{color:var(--accent-light)}
.nav-links{display:flex;gap:4px;list-style:none}
.nav-links a{display:block;padding:8px 16px;color:rgba(255,255,255,.85);text-decoration:none;border-radius:6px;font-size:.95rem;transition:.2s}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,.15);color:#fff}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:4px}
.lang-switch{display:flex;gap:4px;margin-left:12px}
.lang-btn{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.3);padding:4px 10px;border-radius:4px;cursor:pointer;font-size:.8rem;transition:.2s}
.lang-btn.active{background:#fff;color:var(--primary);border-color:#fff}

.hero{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 50%,#1e88e5 100%);color:#fff;padding:80px 0 60px;text-align:center}
.hero h1{font-size:2.8rem;font-weight:800;margin-bottom:16px}
.hero h1 span{color:var(--accent-light)}
.hero p{font-size:1.2rem;max-width:750px;margin:0 auto 32px;opacity:.9}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:8px;font-size:1.05rem;font-weight:600;text-decoration:none;transition:.25s;border:none;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#a52a00;transform:translateY(-2px);box-shadow:0 4px 16px rgba(216,59,1,.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-2px)}
.btn-secondary{background:var(--primary-light);color:#fff}
.btn-secondary:hover{background:var(--primary);transform:translateY(-2px)}
.btn-download{background:#00a854;color:#fff}
.btn-download:hover{background:#008a45;transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,168,84,.4)}

.section{padding:60px 0}
.section-title{text-align:center;font-size:2rem;font-weight:700;margin-bottom:12px;color:var(--primary-dark)}
.section-sub{text-align:center;font-size:1.05rem;color:var(--text-light);margin-bottom:40px;max-width:700px;margin-left:auto;margin-right:auto}
.section.bg-light{background:var(--bg-card)}

.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border-radius:var(--radius);padding:32px 24px;box-shadow:var(--shadow);transition:.3s;text-align:center}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.feature-icon{font-size:2.5rem;margin-bottom:12px}
.feature-card h3{font-size:1.2rem;margin-bottom:8px;color:var(--primary-dark)}
.feature-card p{color:var(--text-light);font-size:.95rem}

.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.download-card{background:var(--bg-card);border-radius:var(--radius);padding:28px 20px;box-shadow:var(--shadow);text-align:center;transition:.3s}
.download-card:hover{transform:translateY(-3px);box-shadow:0 6px 24px rgba(0,0,0,.1)}
.download-card .os-icon{font-size:3rem;margin-bottom:8px}
.download-card h3{font-size:1.15rem;margin-bottom:4px}
.download-card .version{color:var(--text-light);font-size:.85rem;margin-bottom:12px}
.download-card .btn{width:100%;justify-content:center}

.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;background:var(--bg-card);font-weight:600;font-size:1.05rem;transition:.2s}
.faq-q:hover{background:#f0f4f8}
.faq-q .arrow{transition:.3s;font-size:1.2rem}
.faq-item.active .faq-q .arrow{transform:rotate(180deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease}
.faq-item.active .faq-a{max-height:500px;padding:0 24px 18px}
.faq-a p{color:var(--text-light);line-height:1.8}

.about-content{max-width:800px;margin:0 auto;font-size:1.05rem;line-height:1.9}
.about-content p{margin-bottom:16px}
.about-content h3{color:var(--primary-dark);margin:24px 0 12px;font-size:1.2rem}
.contact-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:24px}
.contact-item{background:var(--bg-card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);text-align:center}
.contact-item .ci-icon{font-size:2rem;margin-bottom:8px}
.contact-item h4{margin-bottom:4px}
.contact-item p{color:var(--text-light);font-size:.9rem}

.footer{background:var(--primary-dark);color:rgba(255,255,255,.7);padding:40px 0 20px}
.footer .container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px}
.footer h4{color:#fff;font-size:1.05rem;margin-bottom:12px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:8px}
.footer ul a{color:rgba(255,255,255,.65);text-decoration:none;transition:.2s;font-size:.92rem}
.footer ul a:hover{color:#fff}
.footer-bottom{text-align:center;padding-top:24px;margin-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem}

.page-header{background:linear-gradient(135deg,var(--primary-dark),var(--primary),#1e88e5);color:#fff;padding:50px 0 40px;text-align:center}
.page-header h1{font-size:2.2rem;margin-bottom:8px}
.page-header p{opacity:.85;font-size:1.05rem}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;counter-reset:step}
.step-card{background:var(--bg-card);border-radius:var(--radius);padding:28px 20px;box-shadow:var(--shadow);text-align:center;position:relative}
.step-card::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:var(--primary-light);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem}
.step-card h3{margin:8px 0 8px;font-size:1.1rem;color:var(--primary-dark)}
.step-card p{color:var(--text-light);font-size:.92rem}

.platform-table{width:100%;border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.platform-table th,.platform-table td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--border)}
.platform-table th{background:var(--primary);color:#fff;font-weight:600}
.platform-table tr:hover{background:#f0f4f8}
.platform-table .btn{padding:8px 20px;font-size:.9rem}

.breadcrumb{padding:12px 0;font-size:.88rem;color:var(--text-light)}
.breadcrumb a{color:var(--primary);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{margin:0 6px}

/* ===== 多语言标签 ===== */
.lang-zh, .lang-en{transition:.2s}
html[lang="zh-CN"] .lang-en{display:none!important}
html[lang="en"] .lang-zh{display:none!important}

@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--primary);flex-direction:column;padding:12px 20px;gap:0;box-shadow:0 4px 12px rgba(0,0,0,.2)}
  .nav-links.show{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-toggle{display:block}
  .lang-switch{margin-left:auto;margin-right:12px}
  .hero h1{font-size:2rem}
  .hero p{font-size:1rem}
  .section-title{font-size:1.6rem}
  .footer .container{grid-template-columns:1fr 1fr}
  .page-header h1{font-size:1.7rem}
}
@media(max-width:480px){
  .hero{padding:50px 0 40px}
  .hero h1{font-size:1.6rem}
  .hero-btns{flex-direction:column;align-items:center}
  .btn{width:100%;justify-content:center}
  .footer .container{grid-template-columns:1fr}
}