/* ===========================================================
   Blender中文网 - 全站样式
   =========================================================== */
:root{
  --primary:#f5792a;
  --primary-dark:#d9640f;
  --primary-light:#ff9a4d;
  --accent:#265787;
  --accent-dark:#1a4472;
  --text:#1f2937;
  --text-light:#6b7280;
  --bg:#ffffff;
  --bg-soft:#faf7f4;
  --bg-soft2:#f5efe9;
  --border:#e9e2da;
  --success:#10b981;
  --radius:12px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 10px 30px rgba(245,121,42,.14);
  --max:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,"Hiragino Sans GB",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:70px 0}
.text-center{text-align:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:10px;font-size:16px;font-weight:600;
  cursor:pointer;border:2px solid transparent;transition:.2s;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:#fff4ea;color:var(--primary-dark)}
.btn-lg{padding:16px 36px;font-size:18px}

/* ---------- 顶部导航 ---------- */
.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(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--text)}
.logo:hover{color:var(--text)}
.logo .logo-mark{
  width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:19px;
}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  color:var(--text);font-weight:500;padding:8px 16px;border-radius:8px;font-size:15px;
}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary);background:var(--bg-soft2)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(160deg,#fff3ea 0%,#faf7f4 60%,#fff 100%);
  padding:80px 0 70px;overflow:hidden;
}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero h1{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 .hl{color:var(--primary)}
.hero .sub{font-size:19px;color:var(--text-light);margin-bottom:28px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero .ver{font-size:14px;color:var(--text-light)}
.hero .ver b{color:var(--text)}
.hero-visual{position:relative}

/* Blender 3D视口模拟 */
.blend-window{
  background:#1e2a38;border-radius:14px;overflow:hidden;
  box-shadow:0 20px 50px rgba(38,87,135,.30);
}
.blend-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#263447;border-bottom:1px solid rgba(255,255,255,.08)}
.blend-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.blend-bar i:nth-child(1){background:#ff5f57}
.blend-bar i:nth-child(2){background:#febc2e}
.blend-bar i:nth-child(3){background:#28c840}
.blend-bar .title{margin-left:10px;font-size:12px;color:#9fb3c8}
.blend-body{height:300px;position:relative;background:
  linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px),
  radial-gradient(ellipse at 50% 40%,#2c3e55 0%,#1e2a38 70%);
  background-size:28px 28px,28px 28px,100% 100%;
}
.blend-axis{position:absolute;left:14px;bottom:14px;color:#8fb0d0;font-size:11px;letter-spacing:1px}
.blend-axis i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:4px}
.blend-axis i.r{background:#e74c3c}
.blend-axis i.g{background:#2ecc71}
.blend-axis i.b{background:#3498db}
/* 3D 立方体 */
.scene3d{position:absolute;left:50%;top:52%;transform:translate(-50%,-50%);width:150px;height:150px;perspective:620px}
.cube{width:100%;height:100%;position:relative;transform-style:preserve-3d;animation:spin 14s linear infinite}
.cube div{
  position:absolute;width:100%;height:100%;border:2px solid rgba(255,255,255,.35);
  background:rgba(245,121,42,.78);box-shadow:inset 0 0 40px rgba(255,170,90,.45);
}
.cube .f1{transform:rotateY(0deg) translateZ(75px)}
.cube .f2{transform:rotateY(90deg) translateZ(75px)}
.cube .f3{transform:rotateY(180deg) translateZ(75px)}
.cube .f4{transform:rotateY(-90deg) translateZ(75px)}
.cube .f5{transform:rotateX(90deg) translateZ(75px)}
.cube .f6{transform:rotateX(-90deg) translateZ(75px)}
@keyframes spin{from{transform:rotateX(-24deg) rotateY(0deg)}to{transform:rotateX(-24deg) rotateY(360deg)}}
.scene-label{
  position:absolute;left:50%;top:calc(50% + 120px);transform:translateX(-50%);
  color:#9fb3c8;font-size:12px;letter-spacing:1px;white-space:nowrap;
}

/* ---------- 通用区块标题 ---------- */
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-head h2{font-size:34px;font-weight:800;margin-bottom:14px;letter-spacing:-.3px}
.sec-head p{font-size:17px;color:var(--text-light)}
.bg-soft{background:var(--bg-soft)}

/* ---------- 特性卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.feature-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;
  transition:.25s;
}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#f8c9a4}
.feature-card .ico{
  width:54px;height:54px;border-radius:12px;background:#fff3ea;color:var(--primary);
  display:grid;place-items:center;margin-bottom:18px;
}
.feature-card .ico svg{width:28px;height:28px}
.feature-card h3{font-size:19px;margin-bottom:10px}
.feature-card p{color:var(--text-light);font-size:15px}

/* ---------- 版本更新区 ---------- */
.release{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px}
.card h3{font-size:20px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.check-list li{position:relative;padding-left:30px;margin-bottom:12px;color:#374151}
.check-list li::before{
  content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:50%;
  background:var(--success);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17 4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/14px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17 4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/14px no-repeat;
}
.spec-list li{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px dashed var(--border);font-size:15px}
.spec-list li:last-child{border-bottom:none}
.spec-list li span:first-child{color:var(--text-light)}
.spec-list li span:last-child{font-weight:600}
.file-info{background:var(--bg-soft2);border-radius:10px;padding:16px 20px;margin-top:20px;font-size:14px;color:var(--text-light)}
.file-info b{color:var(--text)}

/* ---------- 对比表 ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
table.compare{width:100%;border-collapse:collapse;background:#fff;min-width:640px}
table.compare th,table.compare td{padding:15px 18px;text-align:center;border-bottom:1px solid var(--border)}
table.compare thead th{background:var(--accent);color:#fff;font-weight:600}
table.compare thead th:first-child{text-align:left}
table.compare tbody td:first-child{text-align:left;font-weight:600}
table.compare tbody tr:nth-child(even){background:var(--bg-soft)}
table.compare .col-hl{background:#fff3ea}
.yes{color:var(--success);font-weight:700}
.no{color:#ef4444;font-weight:700}
.partial{color:var(--primary);font-weight:700}

/* ---------- 教程卡片 ---------- */
.tutorial-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  transition:.25s;display:flex;flex-direction:column;
}
.tutorial-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.tutorial-card .thumb{height:150px;display:grid;place-items:center;color:#fff}
.tutorial-card:nth-child(1) .thumb{background:linear-gradient(135deg,var(--primary),var(--primary-light))}
.tutorial-card:nth-child(2) .thumb{background:linear-gradient(135deg,var(--accent),#3b7cb5)}
.tutorial-card:nth-child(3) .thumb{background:linear-gradient(135deg,#8b5cf6,#a78bfa)}
.tutorial-card .thumb svg{width:52px;height:52px;opacity:.95}
.tutorial-card .body{padding:22px;flex:1;display:flex;flex-direction:column}
.tutorial-card h3{font-size:18px;margin-bottom:10px}
.tutorial-card p{color:var(--text-light);font-size:15px;flex:1}
.tutorial-card .more{margin-top:14px;font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:14px;overflow:hidden}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-q .arrow{flex:none;width:22px;height:22px;transition:transform .3s;color:var(--primary)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-light)}
.faq-a .inner{padding:0 24px 22px;font-size:15px}
.faq-item.open .faq-a{max-height:400px}

/* ---------- 评价 ---------- */
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.review-card .stars{color:var(--primary);font-size:17px;margin-bottom:14px;letter-spacing:2px}
.review-card p{color:#374151;font-style:italic;margin-bottom:18px}
.review-card .who{display:flex;align-items:center;gap:12px}
.review-card .who .av{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:grid;place-items:center;font-weight:700}
.review-card .who b{display:block;font-size:15px}
.review-card .who small{color:var(--text-light)}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;text-align:center}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{font-size:18px;opacity:.92;margin-bottom:28px}
.cta .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .btn-outline{color:#fff;border-color:#fff}
.cta .btn-outline:hover{background:#fff;color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:#12202e;color:#cbd5e1;padding:60px 0 24px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1.2fr 1.2fr;gap:40px;margin-bottom:40px}
.footer-grid h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-grid p{color:#94a3b8;margin-bottom:14px}
.footer-grid ul li{margin-bottom:11px}
.footer-grid ul li a{color:#94a3b8}
.footer-grid ul li a:hover{color:#fff}
.footer-social{display:flex;gap:12px;margin-top:8px}
.footer-social a{width:36px;height:36px;border-radius:8px;background:#1e2f40;display:grid;place-items:center;color:#94a3b8}
.footer-social a:hover{background:var(--primary);color:#fff}
.footer-social svg{width:18px;height:18px}
.footer-bottom{border-top:1px solid #1e2f40;padding-top:24px;text-align:center;color:#64748b;font-size:13px;line-height:1.9}

/* ---------- 内页 Banner ---------- */
.page-banner{background:linear-gradient(160deg,#fff3ea,#faf7f4);padding:56px 0;text-align:center}
.page-banner h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-banner p{font-size:18px;color:var(--text-light);max-width:680px;margin:0 auto}
.breadcrumb{font-size:14px;color:var(--text-light);margin-bottom:18px}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}

/* ---------- 下载页 ---------- */
.dl-box{background:#fff;border:2px solid #f8c9a4;border-radius:16px;padding:38px;text-align:center;box-shadow:var(--shadow-lg)}
.dl-box .badge{display:inline-block;background:#fff3ea;color:var(--primary);padding:5px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px}
.dl-box h2{font-size:26px;margin-bottom:8px}
.dl-box .meta{color:var(--text-light);margin-bottom:24px}
.dl-mirrors{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.mirror{border:1px solid var(--border);border-radius:10px;padding:20px;text-align:left;transition:.2s}
.mirror:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.mirror h4{margin-bottom:6px;color:var(--text)}
.mirror p{font-size:13px;color:var(--text-light);margin-bottom:12px}

/* ---------- 教程详细步骤 ---------- */
.step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.step .num{flex:none;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px}
.step .st-body h3{font-size:19px;margin-bottom:8px}
.step .st-body p{color:var(--text-light)}

/* ---------- 关于页 ---------- */
.prose{max-width:820px;margin:0 auto}
.prose h2{font-size:26px;margin:36px 0 16px}
.prose h3{font-size:20px;margin:26px 0 12px}
.prose p{margin-bottom:16px;color:#374151}
.prose ul.dot{margin:0 0 16px 0}
.prose ul.dot li{position:relative;padding-left:22px;margin-bottom:10px;color:#374151}
.prose ul.dot li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .hero .container{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1;max-width:520px;margin:0 auto}
  .release{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  section{padding:50px 0}
  .hero{padding:50px 0}
  .hero h1{font-size:32px}
  .sec-head h2{font-size:27px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .dl-mirrors{grid-template-columns:1fr}
  .nav-menu{
    position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:10px 0;border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:transform .3s;
  }
  .nav-menu.open{transform:translateY(0)}
  .nav-menu a{padding:14px 24px;border-radius:0}
  .nav-cta{margin:10px 24px}
  .nav-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr}
  .page-banner h1{font-size:29px}
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--primary);color:#fff;display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:.3s;border:none;z-index:90;
}
.to-top.show{opacity:1;visibility:visible}
.to-top svg{width:22px;height:22px}