/* ==================== 基础（与 www.applyunis.com 一致） ==================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;line-height:1.6;color:#1f2937;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:all .3s ease}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
:root{--primary:#3b82f6;--primary-dark:#1d4ed8;--primary-light:#dbeafe;--secondary:#1e3a5f;--accent:#06b6d4;--text-primary:#1f2937;--text-secondary:#6b7280;--text-muted:#9ca3af;--bg-white:#ffffff;--bg-light:#f8fafc;--bg-gradient:linear-gradient(135deg,#1e3a5f 0%,#3b82f6 100%);--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:24px;--transition:all .3s cubic-bezier(.4,0,.2,1)}
.w{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}

/* ==================== 导航栏（与官网一致） ==================== */
.nav1{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.05);height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 40px;transition:var(--transition)}
.nav-left{display:flex;align-items:center;gap:48px}
.nav-logion img{height:40px;width:auto}
.nav-left_t{display:flex;gap:32px}
.nav-left_t a{font-size:15px;font-weight:500;color:var(--text-secondary);position:relative;padding:8px 0}
.nav-left_t a:hover,.nav-left_t a.active{color:var(--primary)}
.nav-left_t a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:var(--transition)}
.nav-left_t a:hover::after,.nav-left_t a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:20px}
.login a{font-size:14px;color:var(--text-secondary);font-weight:500}
.login a:hover{color:var(--primary)}
.free a{display:inline-block;padding:10px 24px;background:var(--bg-gradient);color:#fff;font-size:14px;font-weight:600;border-radius:50px;box-shadow:var(--shadow);transition:var(--transition)}
.free a:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

/* 移动端菜单 */
.adaptation-tab{display:none}
.menu-toggle{background:none;border:none;font-size:22px;line-height:1;color:var(--text-primary);cursor:pointer;padding:8px}
.nav_h5{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid rgba(0,0,0,.06);box-shadow:var(--shadow-lg)}
.nav_h5 a{display:block;padding:13px 24px;font-size:15px;color:var(--text-secondary);border-top:1px solid rgba(0,0,0,.04)}
.nav_h5 a:hover{color:var(--primary);background:var(--bg-light)}

/* ==================== Hero（下载页内容） ==================== */
.hero{background:linear-gradient(135deg,#f0f9ff 0%,#e0f2fe 50%,#dbeafe 100%);padding:72px 0 0}
.hero-container{max-width:1280px;margin:0 auto;padding:0 40px;display:flex;align-items:center;gap:60px;min-height:440px}
.hero-left{flex:1.1}
.hero-badge{display:inline-block;background:#dbeafe;color:#1d4ed8;font-size:12px;font-weight:600;padding:4px 14px;border-radius:20px;margin-bottom:16px;letter-spacing:1px}
.hero-title{font-size:42px;font-weight:800;color:#0f172a;line-height:1.2;margin:0 0 14px}
.hero-title span{color:var(--primary)}
.hero-sub{font-size:17px;color:#475569;margin:0 0 6px}
.hero-sub-en{font-size:12px;color:#93a6c4;letter-spacing:3px;margin-bottom:28px;text-transform:uppercase}
.dl-row{display:flex;gap:14px;flex-wrap:wrap}
.dl-btn{display:flex;align-items:center;gap:12px;min-width:200px;background:#fff;border-radius:12px;padding:12px 18px;box-shadow:0 10px 26px rgba(9,68,120,.14);transition:all .2s;color:#1d3550}
.dl-btn:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(9,68,120,.20)}
.dl-btn .ic{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex:none}
.dl-btn .ic svg{width:22px;height:22px}
.dl-btn .t1{font-size:15px;font-weight:600;color:#1d3550;line-height:1.3}
.dl-btn .t2{font-size:11.5px;color:#8496a9;line-height:1.3}
.ic-mac{background:linear-gradient(135deg,#3d4a5c,#1c2733)}
.ic-win{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.ic-and{background:linear-gradient(135deg,#34d399,#059669)}
.hero-right{flex:1;position:relative;min-height:300px}
.mock{position:relative;width:92%;max-width:430px;height:270px;margin:0 auto;background:#fff;border-radius:14px;box-shadow:0 40px 80px rgba(6,52,90,.22);overflow:hidden}
.mock .bar{height:30px;background:#F0F4F9;display:flex;align-items:center;gap:6px;padding:0 14px}
.mock .bar i{width:9px;height:9px;border-radius:50%;display:block}
.mock .bar i:nth-child(1){background:#ff5f57}.mock .bar i:nth-child(2){background:#febc2e}.mock .bar i:nth-child(3){background:#28c840}
.mock .bar span{margin-left:8px;font-size:10px;color:#9AA9BB;background:#fff;border-radius:4px;padding:2px 10px}
.mock .body{padding:18px}
.mock .stats{display:flex;gap:12px;margin-bottom:14px}
.mock .stat{flex:1;background:#F6FAFF;border-radius:8px;padding:10px 12px}
.mock .stat b{display:block;font-size:15px;color:#16324f}
.mock .stat span{font-size:10px;color:#93A6B8}
.mock .stat.hl{background:linear-gradient(135deg,#DBEAFE,#BFDBFE)}
.mock .stat.hl b{color:#1d4ed8}
.mock .lines i{display:block;height:8px;border-radius:4px;background:#E4EDF6;margin-bottom:9px}
.mock .lines i.w1{width:90%}.mock .lines i.w2{width:72%}.mock .lines i.w3{width:84%}.mock .lines i.w4{width:55%}
.float-card{position:absolute;background:#fff;border-radius:12px;box-shadow:0 14px 34px rgba(6,52,90,.18);padding:10px 14px;display:flex;align-items:center;gap:10px}
.float-card .dot{width:34px;height:34px;border-radius:50%;background:#DBEAFE;color:#2563eb;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.float-card b{font-size:12.5px;color:#16324f;display:block}
.float-card span{font-size:10.5px;color:#93A6B8}
.float-card.f1{left:0;top:34px;animation:afFloat 4s ease-in-out infinite}
.float-card.f2{right:0;bottom:18px;animation:afFloat 4.6s ease-in-out .8s infinite}
@keyframes afFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

.dl-item{display:flex;flex-direction:column;gap:6px}
.dl-tut{font-size:12px;color:#1d4ed8;padding-left:6px}
.dl-tut:hover{text-decoration:underline}
/* 版本信息条 */
.ver{background:var(--bg-light);border-bottom:1px solid #E8F0FB}
.ver .container{display:flex;flex-wrap:wrap;gap:12px 30px;padding:15px 24px;font-size:13px;color:#6B7A90}
.ver b{color:var(--primary)}

/* 通用 Section（标题样式与官网一致） */
.sec{padding:76px 0 66px}
.sec.alt{background:var(--bg-light)}
.title{font-size:36px;font-weight:700;color:var(--text-primary);margin-bottom:16px;text-align:center}
.sub-title{font-size:16px;color:var(--text-secondary);text-align:center;line-height:1.6;margin-bottom:48px}

/* 特性 Grid */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{background:#fff;border:1px solid #E2E8F0;border-radius:16px;padding:30px 26px;transition:all .25s}
.feat:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(9,68,120,.10)}
.feat .ic{width:52px;height:52px;border-radius:13px;background:#DBEAFE;color:#2563eb;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feat .ic svg{width:26px;height:26px}
.feat h4{font-size:17px;margin:0 0 10px;color:#0f172a;font-weight:600}
.feat p{font-size:13.5px;color:#64748b;line-height:1.85;margin:0}

/* 平台下载卡 Grid */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.dl-card{background:#fff;border:1px solid #E2E8F0;border-radius:18px;padding:34px 30px 30px;display:flex;flex-direction:column;position:relative;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.dl-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px}
.dl-card.t2::before{background:linear-gradient(90deg,#3d4a5c,#1c2733)}
.dl-card.t1::before{background:linear-gradient(90deg,#3b82f6,#1d4ed8)}
.dl-card.t3::before{background:linear-gradient(90deg,#34d399,#059669)}
.dl-card .head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.dl-card .ic{width:54px;height:54px;border-radius:13px;color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.dl-card .ic svg{width:27px;height:27px}
.dl-card h4{font-size:20px;font-weight:700;color:#0f172a;margin:0}
.dl-card .meta{font-size:12.5px;color:#94A3B8}
.dl-card ul{list-style:none;margin:4px 0 24px;padding:0;flex:1}
.dl-card ul li{font-size:13.5px;color:#475569;line-height:2.1;padding-left:22px;position:relative}
.dl-card ul li::before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:700}
.dl-card .btn{display:flex;align-items:center;justify-content:center;gap:8px;height:48px;border-radius:10px;color:#fff;font-size:15.5px;font-weight:600;transition:all .2s}
.dl-card .btn:hover{filter:brightness(1.08);transform:translateY(-2px);color:#fff}
.dl-card.t2 .btn{background:linear-gradient(135deg,#3d4a5c,#1c2733)}
.dl-card.t1 .btn{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.dl-card.t3 .btn{background:linear-gradient(135deg,#10b981,#059669)}
.dl-card .note{margin-top:12px;font-size:11.5px;color:#94A3B8;line-height:1.6}

/* 步骤 Grid */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{text-align:center;padding:30px 22px;background:#fff;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.step .num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#60A5FA,#2563eb);color:#fff;font-size:18px;font-weight:600;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step h4{margin:0 0 8px;font-size:16px;color:#0f172a;font-weight:600}
.step p{font-size:13.5px;color:#64748b;margin:0;line-height:1.85}

/* 升级日志弹层 */
.log-list details{background:#fff;border:1px solid #E2E8F0;border-radius:12px;padding:14px 18px;margin-bottom:10px}
.log-list details[open]{box-shadow:0 6px 18px rgba(9,68,120,.08)}
.log-list summary{cursor:pointer;font-size:15px;display:flex;align-items:center;gap:10px;list-style:none;flex-wrap:wrap}
.log-list summary::-webkit-details-marker{display:none}
.log-list .ld{color:#94a3b8;font-size:12.5px;font-weight:400}
.log-list .tag{margin-left:auto;font-size:11px;padding:2px 10px;border-radius:20px;font-weight:600;flex:none}
.log-list .tag.fix{background:#fef3c7;color:#b45309}
.log-list .tag.new{background:#dbeafe;color:#1d4ed8}
.log-list details p{margin:10px 0 0;font-size:13.5px;color:#64748b;line-height:1.8}
.log-err{color:#b91c1c;font-size:13.5px}
.dlg-mask[hidden]{display:none}
.dlg-mask{position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:2000;display:flex;align-items:center;justify-content:center;padding:20px}
.dlg{background:#fff;border-radius:16px;max-width:640px;width:100%;max-height:80vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.dlg-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #eef2f7;flex:none}
.dlg-head b{font-size:17px}
.dlg-close{border:none;background:none;font-size:26px;line-height:1;cursor:pointer;color:#94a3b8;padding:0 4px}
.dlg-close:hover{color:#475569}
.dlg-body{padding:14px 20px 20px;overflow-y:auto}
.js-changelog{cursor:pointer}

/* ==================== 页脚（与 www.applyunis.com 完全一致） ==================== */
.footer-ai{background:linear-gradient(135deg,#1e3a5f 0%,#3b82f6 100%);padding:80px 0;text-align:center;color:#fff}
.ai-name{font-size:32px;font-weight:700;margin-bottom:32px}
.footer-box{display:inline-flex;background:#fff;border-radius:50px;overflow:hidden;box-shadow:var(--shadow-xl)}
.footer-input input{width:320px;padding:24px;border:none;font-size:15px;outline:none}
.footer-free{padding:16px 32px;background:var(--primary);color:#fff;font-weight:600;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center}
.footer-free:hover{background:var(--primary-dark)}
.footer-footer{background:#0f172a;color:#fff;padding:64px 0 32px}
.footer-content{display:flex;justify-content:space-between;gap:80px;margin-bottom:48px}
.footer-links{display:flex;flex:1;gap:60px}
.footer-column{display:flex;flex-direction:column;gap:16px}
.footer-column-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:8px}
.footer-column-link{font-size:14px;color:rgba(255,255,255,.6);transition:var(--transition);line-height:1.8}
.footer-column-link:hover{color:var(--primary)}
.footer-center{display:flex;flex-direction:column;align-items:center;gap:24px}
.footer-logo img{height:48px;width:auto;filter:brightness(0) invert(1)}
.footer-right{display:flex;flex-direction:column;align-items:flex-end;gap:24px}
.footer-qrcodes{display:flex;gap:16px}
.footer-qrcode-item{text-align:center}
.footer-qrcode-img{width:100px;height:100px;background:#fff;border-radius:var(--radius);overflow:hidden;margin-bottom:8px;padding:4px}
.footer-qrcode-img img{width:100%;height:100%;object-fit:cover}
.footer-qrcode-text{font-size:12px;color:rgba(255,255,255,.6)}
.footer-partners{display:flex;gap:12px;margin-top:8px}
.footer-partners img{width:110px;object-fit:contain;background:#fff;border-radius:var(--radius-sm);padding:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:32px;text-align:center}
.footer-copyright{font-size:13px;color:rgba(255,255,255,.5);margin-bottom:8px}
.footer-divider{margin:0 10px;color:rgba(255,255,255,.25)}
.footer-icp{font-size:13px;color:rgba(255,255,255,.4)}
.footer-icp a{color:rgba(255,255,255,.4);margin:0 8px}
.footer-icp a:hover{color:var(--primary)}

/* ==================== 侧边栏 + 返回顶部（与官网一致） ==================== */
.sidebar{position:fixed;right:20px;bottom:100px;z-index:999}
.sidebar li{width:56px;height:56px;background:#fff;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);cursor:pointer;transition:var(--transition);font-size:11px;color:var(--text-secondary);position:relative;margin-bottom:12px;list-style:none}
.sidebar li:hover{background:var(--primary);color:#fff;transform:scale(1.1)}
.sidebar li img{width:20px;height:20px;margin-bottom:2px}
.sidebar-box{position:absolute;right:70px;top:50%;transform:translateY(-50%);background:#fff;padding:16px;border-radius:var(--radius);box-shadow:var(--shadow-xl);display:none;white-space:nowrap;width:200px}
.sidebar li:hover .sidebar-box{display:flex;gap:12px;align-items:center}
.sidebar-box-left img{width:40px;height:40px}
.sidebar-box-title{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.sidebar-box-sub-title{font-size:12px;color:var(--text-muted)}
.sidebar-top{position:fixed;right:20px;bottom:40px;width:48px;height:48px;background:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);cursor:pointer;transition:var(--transition);z-index:999;border:none;padding:0}
.sidebar-top:hover{background:var(--primary);transform:translateY(-4px)}
.sidebar-top img{width:24px;height:24px}

/* ==================== 响应式 ==================== */
@media (max-width:1024px){
  .w{padding:0 24px}
  .nav1{padding:0 24px}
  .nav-left{gap:28px}
  .nav-left_t{gap:20px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .footer-content{flex-wrap:wrap;gap:40px}
}
@media (max-width:768px){
  .nav1{padding:0 16px}
  .nav-left_t,.nav-right{display:none}
  .adaptation-tab{display:block}
  .hero{padding:24px 0 0}
  .hero-container{flex-direction:column;padding:24px 16px;min-height:0;gap:32px}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .title{font-size:24px}
  .sub-title{font-size:14px;padding:0 16px;margin-bottom:32px}
  .sec{padding:48px 0 44px}
  .feat-grid,.step-grid{grid-template-columns:1fr}
  .ver .container{gap:8px 20px;padding:12px 16px;font-size:12px}
  .footer-ai{padding:48px 16px}
  .ai-name{font-size:22px;margin-bottom:24px}
  .footer-input input{width:180px;padding:16px}
  .footer-free{padding:12px 18px}
  .footer-footer{padding:40px 0 24px}
  .footer-content{gap:32px}
  .footer-links{flex-direction:column;gap:24px}
  .footer-column-title{font-size:14px}
  .footer-column-link{font-size:13px}
  .footer-bottom{padding-top:24px}
  .footer-copyright,.footer-icp{font-size:11px}
  .sidebar{display:none}
}