/* ==========================================================
   brtwfitness 主题 —— 工业黄黑色调 / 制造业品牌型
   迁移自山东布莱特威健身器材官网设计（原站用建站平台生成，结构无法直接复用），
   参照原站配色（品牌黄 #FFE500）与版式手工重写，零外部依赖。
   ========================================================== */

:root{
  --bg:        #fff;
  --bg-2:      #f5f6f7;
  --panel:     #fff;
  --line:      #e6e7e9;
  --ink:       #1c1c1c;
  --muted:     #666;
  --muted-2:   #999;
  --dark:      #1c1c1c;
  --dark-2:    #252525;
  --accent:    #ffe500;
  --accent-dk: #fed101;
  --on-accent: #1c1c1c;
  --sans:      "Microsoft YaHei","PingFang SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --maxw:      1200px;
  --radius:    4px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ font-weight:700; color:var(--ink); margin:0 0 .5em; }
p{ margin:0 0 1em; color:var(--muted); }
button,input,textarea{ font-family:inherit; font-size:inherit; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* ---------- 顶部信息条 ---------- */
.topbar{ background:var(--dark); color:#ccc; font-size:13px; }
.topbar .wrap{ display:flex; align-items:center; justify-content:space-between; height:38px; }
.topbar .tagline{ color:#aaa; }
.topbar .contact-line span,.topbar .contact-line a{ margin-left:18px; color:#ddd; }
.topbar .contact-line a:hover{ color:var(--accent); }

/* ---------- 头部 / 导航 ---------- */
.site-header{ background:var(--dark-2); position:relative; z-index:20; }
.site-header .wrap{ display:flex; align-items:center; justify-content:space-between; height:84px; }
.brand{ display:flex; align-items:center; }
.brand img{ height:44px; width:auto; }
.brand-text{ color:#fff; font-size:20px; font-weight:700; }
.brand-sub{ display:block; font-size:11px; font-weight:400; letter-spacing:.12em; color:var(--accent); text-transform:uppercase; }

.main-nav ul{ display:flex; gap:6px; }
.main-nav a{ display:block; padding:10px 18px; color:#eee; font-size:15px; border-radius:var(--radius); }
.main-nav li.current a,.main-nav a:hover{ background:var(--accent); color:var(--on-accent); }

.nav-toggle{ display:none; flex-direction:column; gap:5px; width:28px; background:none; border:0; cursor:pointer; padding:8px; }
/* Fix: <button> 当 flex 容器时，子元素的 stretch 对齐不可靠，显式给 span 一个 100% 宽度，不依赖 stretch */
.nav-toggle span{ width:100%; height:2px; background:#fff; display:block; }

/* ---------- 英雄区（视频背景，视频加载不出来 / 不支持时露出 --hero-img 兜底） ---------- */
.hero{
  position:relative; color:#fff; padding:120px 0 90px; overflow:hidden;
  background:var(--hero-img) center/cover no-repeat;
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(180deg,rgba(20,20,20,.72),rgba(20,20,20,.55));
}
.hero-video{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:0;
}
.hero .wrap{ position:relative; z-index:2; }
.hero .eyebrow{ color:var(--accent); font-size:13px; letter-spacing:.28em; text-transform:uppercase; }
.hero h1{ color:#fff; font-size:38px; margin:10px 0 16px; max-width:680px; }
.hero p{ color:#e6e6e6; max-width:560px; font-size:16px; }
.btn-row{ display:flex; gap:14px; margin-top:28px; flex-wrap:wrap; }

.btn{
  display:inline-block; padding:13px 30px; border-radius:var(--radius); font-size:14px; font-weight:700;
  border:1px solid rgba(255,255,255,.55); color:#fff;
}
.btn:hover{ border-color:var(--accent); color:var(--accent); }
.btn-solid{ background:var(--accent); border-color:var(--accent); color:var(--on-accent); }
.btn-solid:hover{ background:var(--accent-dk); border-color:var(--accent-dk); color:var(--on-accent); }

/* ---------- 分区通用 ---------- */
.section{ padding:80px 0; }
.section-alt{ background:var(--bg-2); }
.section-head{ text-align:center; margin-bottom:48px; }
.section-head .eyebrow{
  display:inline-block; font-size:13px; letter-spacing:.24em; text-transform:uppercase;
  color:var(--accent-dk); margin-bottom:12px; font-weight:700;
}
.section-head h2{ font-size:30px; margin:0 0 12px; }
.section-head p{ max-width:600px; margin:0 auto; }
.section-foot{ text-align:center; margin-top:40px; }

/* ---------- 卡片网格 ---------- */
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:26px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }

.feature-card{
  padding:32px 26px; background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  transition:border-color .2s, transform .2s;
}
.feature-card:hover{ border-color:var(--accent); transform:translateY(-3px); }
.feature-card .num{ display:block; font-size:13px; color:var(--accent-dk); font-weight:700; margin-bottom:10px; }
.feature-card h3{ font-size:18px; margin-bottom:8px; }
.feature-card p{ margin:0; font-size:14px; }

.app-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.app-item{ padding:26px 16px; background:var(--bg-2); border-radius:var(--radius); }
.app-item h4{ font-size:16px; margin:0 0 6px; }
.app-item p{ font-size:13px; margin:0; color:var(--muted-2); }

.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; margin-top:36px; }
.stats-grid b{ display:block; font-size:28px; color:var(--accent-dk); }
.stats-grid span{ font-size:13px; color:var(--muted-2); }

.badge-row{ display:flex; flex-wrap:wrap; gap:14px; margin-top:28px; }
.badge{
  display:inline-flex; align-items:center; gap:8px; padding:9px 16px; font-size:13px;
  border:1px solid var(--line); border-radius:999px; color:var(--muted);
}
.badge::before{ content:"✓"; color:var(--accent-dk); font-weight:700; }

/* ---------- 关于我们 / 内页 hero ---------- */
.about-hero{ background:var(--dark-2); color:#fff; padding:64px 0; }
.about-hero .eyebrow{ color:var(--accent); font-size:13px; letter-spacing:.24em; text-transform:uppercase; }
.about-hero h1{ color:#fff; font-size:30px; margin:10px 0 0; }
.about-hero p{ color:#ccc; margin:10px 0 0; max-width:640px; }

.story{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
.story-figure{ aspect-ratio:4/3; background:var(--bg-2) var(--hero-img,none) center/cover no-repeat; border-radius:var(--radius); }
.story-copy .eyebrow{ display:inline-block; font-size:13px; letter-spacing:.24em; text-transform:uppercase; color:var(--accent-dk); font-weight:700; margin-bottom:10px; }

/* ---------- 产品 / 文章卡片 ---------- */
.product-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.product-card{ border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; display:block; background:var(--panel); }
.product-card:hover{ border-color:var(--accent); }
.product-card .thumb{ aspect-ratio:4/3; background:var(--bg-2); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.product-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.product-card .thumb .placeholder{ font-size:34px; color:var(--line); }
.product-card .body{ padding:16px 18px; }
.product-card h3{ font-size:16px; margin:0 0 6px; }
.product-card p{ font-size:13px; margin:0; color:var(--muted-2); }

.news-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.news-card{ display:block; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--panel); }
.news-card:hover{ border-color:var(--accent); }
.news-card .thumb{ aspect-ratio:16/9; background:var(--bg-2); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.news-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.news-card .thumb .placeholder{ font-size:34px; color:var(--line); }
.news-card .body{ padding:18px 20px; }
.news-card .date{ font-size:12px; color:var(--accent-dk); font-weight:700; letter-spacing:.04em; }
.news-card h3{ font-size:16px; margin:8px 0; }
.news-card p{ font-size:13px; margin:0 0 10px; }
.news-card .more{ font-size:13px; font-weight:700; color:var(--ink); }

.news-list{ max-width:820px; margin:0 auto; }
.news-list li{
  display:flex; gap:20px; align-items:baseline; padding:20px 0; border-bottom:1px solid var(--line);
}
.news-list .date{ flex:0 0 auto; font-size:13px; color:var(--accent-dk); font-weight:700; white-space:nowrap; }
.news-list a{ font-size:16px; }
.news-list a:hover{ color:var(--accent-dk); }
.news-list .excerpt{ display:block; font-size:13px; color:var(--muted-2); margin-top:4px; }

/* ---------- 面包屑 ---------- */
.crumbs{ font-size:13px; color:var(--muted-2); margin-bottom:0; }
.crumbs a:hover{ color:var(--accent-dk); }
.about-hero .crumbs{ color:#bbb; }
.about-hero .crumbs a{ color:#ddd; }

/* ---------- 文章 / 产品详情 ---------- */
.article-wrap{ max-width:820px; margin:0 auto; }
.article-meta{ font-size:13px; color:var(--muted-2); margin:8px 0 24px; }
.article-meta span+span::before{ content:"·"; margin:0 8px; }
.article-body{ font-size:15.5px; line-height:1.9; }
.article-body img{ border-radius:var(--radius); margin:14px 0; }
.article-pager{ display:flex; justify-content:space-between; gap:20px; margin-top:40px; padding-top:24px; border-top:1px solid var(--line); font-size:14px; }
.article-pager a:hover{ color:var(--accent-dk); }
.related{ margin-top:48px; padding-top:32px; border-top:1px solid var(--line); }
.related h2{ font-size:18px; }
.related ul{ display:grid; gap:10px; }
.related a:hover{ color:var(--accent-dk); }

/* 产品详情：图 + 信息并排 */
.product-detail{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:flex-start; margin-bottom:16px; }
.product-detail .thumb{ background:var(--bg-2); border-radius:var(--radius); overflow:hidden; aspect-ratio:1/1; }
.product-detail .thumb img{ width:100%; height:100%; object-fit:cover; }
.product-detail h1{ font-size:26px; margin-bottom:12px; }
.inquiry-form{ margin-top:40px; padding:32px; background:var(--bg-2); border-radius:var(--radius); }
.inquiry-form h2{ font-size:18px; margin-bottom:18px; }

/* ---------- 表单 ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1.2fr; gap:48px; }
.contact-info li{ padding:14px 0; border-bottom:1px solid var(--line); font-size:14px; }
.contact-info b{ display:block; color:var(--muted-2); font-size:12px; margin-bottom:3px; text-transform:uppercase; letter-spacing:.06em; }

form.contact-form,.inquiry-form form{ display:grid; gap:14px; }
form.contact-form label,.inquiry-form label{ display:block; font-size:13px; color:var(--muted-2); }
.form-row-2{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
form.contact-form input,form.contact-form textarea,
.inquiry-form input,.inquiry-form textarea{
  width:100%; margin-top:6px; padding:11px 14px; border:1px solid var(--line); border-radius:var(--radius);
  background:#fff; color:var(--ink);
}
form.contact-form textarea,.inquiry-form textarea{ min-height:100px; resize:vertical; }
form.contact-form button,.inquiry-form button{
  justify-self:start; padding:12px 30px; background:var(--accent); border:0; border-radius:var(--radius);
  font-weight:700; color:var(--on-accent); cursor:pointer;
}
form.contact-form button:hover,.inquiry-form button:hover{ background:var(--accent-dk); }

/* ---------- 分页 ---------- */
.pagination{ display:flex; justify-content:center; margin-top:48px; }
.pagination nav{ font-size:14px; }
.pagination ul{ display:flex; gap:6px; flex-wrap:wrap; justify-content:center; }
.pagination li{ display:inline-flex; }
.pagination span,.pagination a{
  display:inline-flex; align-items:center; justify-content:center; min-width:36px; height:36px; padding:0 10px;
  border:1px solid var(--line); border-radius:var(--radius); color:var(--muted);
}
.pagination a:hover{ border-color:var(--accent); color:var(--accent-dk); }
.pagination .active span{ background:var(--accent); border-color:var(--accent); color:var(--on-accent); }
.pagination .disabled span{ color:var(--muted-2); opacity:.5; }

/* ---------- CTA 条 ---------- */
.cta-band{ background:var(--dark); color:#fff; padding:44px 0; text-align:center; }
.cta-band h2{ color:#fff; font-size:22px; margin-bottom:8px; }
.cta-band .phones{ color:var(--accent); font-size:22px; font-weight:700; letter-spacing:.02em; }
.cta-band .phones span{ margin:0 16px; }

/* ---------- 底部 ---------- */
.site-footer{ background:var(--dark); color:#999; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding:60px 0 40px; }
.footer-brand .brand-text{ color:#fff; }
.footer-brand p{ color:#888; margin-top:12px; font-size:13px; max-width:320px; }
.footer-col h4{ color:#fff; font-size:14px; margin-bottom:16px; }
.footer-col li{ margin-bottom:10px; font-size:13px; }
.footer-col a:hover{ color:var(--accent); }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.08); padding:20px 0; text-align:center; font-size:12px; color:#777; }

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed; right:26px; bottom:26px; width:44px; height:44px; border-radius:50%;
  background:var(--dark-2); color:var(--accent); display:flex; align-items:center; justify-content:center;
  font-size:18px; opacity:0; pointer-events:none; transition:opacity .2s; z-index:30; border:0; cursor:pointer;
}
.to-top.show{ opacity:1; pointer-events:auto; }
.to-top:hover{ background:var(--accent); color:var(--on-accent); }

/* ---------- 产品系列（首页，图文卡片，链接到产品中心） ---------- */
.series-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.series-card{
  position:relative; display:block; aspect-ratio:3/4; border-radius:var(--radius); overflow:hidden;
  color:#fff; background:var(--dark-2);
}
.series-card img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition:transform .3s; }
.series-card:hover img{ transform:scale(1.05); }
.series-card::after{
  content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,.82));
}
.series-card .info{ position:absolute; left:0; right:0; bottom:0; padding:20px; z-index:1; }
.series-card h3{ color:#fff; font-size:17px; margin:0 0 6px; }
.series-card p{ color:#ddd; font-size:12.5px; margin:0 0 10px; }
.series-card .more{ font-size:12.5px; font-weight:700; color:var(--accent); }

/* ---------- 社会责任 / CSR 横幅 ---------- */
.csr-band{ background:var(--bg-2); padding:56px 0; text-align:center; }
.csr-band img{ height:34px; width:auto; margin:0 auto 18px; }
.csr-band p{ max-width:720px; margin:0 auto 20px; font-size:15px; }

/* ---------- 客户案例（首页展示 + 列表页） ---------- */
.case-grid{ display:grid; grid-template-columns:repeat(5,1fr); gap:18px; }
.case-card{ display:block; border-radius:var(--radius); overflow:hidden; position:relative; aspect-ratio:4/3; background:var(--bg-2); }
.case-card .thumb{ position:absolute; inset:0; display:block; }
.case-card img{ width:100%; height:100%; object-fit:cover; }
.case-card .placeholder{ display:flex; align-items:center; justify-content:center; height:100%; font-size:28px; color:var(--line); }
.case-card .name{
  position:absolute; left:0; right:0; bottom:0; padding:10px 12px; font-size:13px; font-weight:700; color:#fff;
  background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.75));
}
/* cases.blade.php 列表页（App\Site\Http\Controllers\PageController::category）：图更大，3 列 */
.case-grid-list{ grid-template-columns:repeat(3,1fr); }
.case-grid-list .case-card{ aspect-ratio:4/3; }
.case-grid-list .case-card .name{ font-size:15px; padding:14px 16px; }

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .main-nav{
    position:fixed; inset:84px 0 0 0; background:var(--dark-2); padding:16px 24px; overflow-y:auto;
    transform:translateX(100%); transition:transform .25s; z-index:19;
  }
  .main-nav.open{ transform:translateX(0); }
  .main-nav ul{ flex-direction:column; gap:2px; }
  .main-nav a{ padding:14px 6px; font-size:16px; }
  .nav-toggle{ display:flex; }
  .topbar .tagline{ display:none; }
  .hero h1{ font-size:28px; }
  .story{ grid-template-columns:1fr; }
  .grid-3,.grid-4,.app-grid,.stats-grid,.product-grid,.news-grid,.series-grid,.case-grid-list{ grid-template-columns:repeat(2,1fr); }
  .case-grid{ grid-template-columns:repeat(3,1fr); }
  .contact-grid,.form-row-2,.product-detail{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; padding:44px 0 24px; }
}
@media (max-width:640px){
  .grid-3,.grid-4,.app-grid,.stats-grid,.product-grid,.news-grid,.series-grid,.case-grid-list{ grid-template-columns:1fr; }
  .case-grid{ grid-template-columns:repeat(2,1fr); }
  .section{ padding:56px 0; }
  .topbar .contact-line span,.topbar .contact-line a{ margin-left:10px; }
}