/* ============================================================
   武汉博庭旅游开发有限公司 · 官网
   设计系统：浅米 x 深棕 品牌色，参照英文站大图卡片风格
   ============================================================ */
:root{
  --earth:#5c4d3c;        /* 深棕：标题/导航 */
  --earth-deep:#3f352a;   /* 更深棕：页脚 */
  --sand:#faf6f0;         /* 浅米：页面背景 */
  --cream:#f3ece1;        /* 米白：卡片底 */
  --accent:#b03a2e;       /* 红棕：CTA/价格 */
  --gold:#c9a227;         /* 金色：品牌强调 */
  --forest:#3d5a45;       /* 松绿：辅助强调 */
  --white:#fff;
  --text:#4a4038;
  --muted:#8a7a6a;
  --line:#e8dfd2;
  --shadow:0 4px 20px rgba(0,0,0,.07);
  --radius:8px;
  --nav-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--sand);
  color:var(--text);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
h1,h2,h3,h4{color:var(--earth);font-weight:700;line-height:1.35}
.container{max-width:1160px;margin:0 auto;padding:0 24px}

/* ---------------- 导航 ---------------- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:rgba(63,53,42,.96);
  backdrop-filter:blur(8px);
  box-shadow:0 1px 12px rgba(0,0,0,.15);
}
.nav-inner{max-width:1160px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:40px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px}
.brand-mark{
  width:auto;height:36px;display:block;
  border-radius:0;background:transparent;box-shadow:none;
}
.nav-links{display:flex;gap:28px;margin-left:auto;align-items:center}
.nav-links a{color:rgba(255,255,255,.85);font-size:14.5px;position:relative;padding:10px 2px;transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:#fff}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,#c9a227,#e6c560);border-radius:2px;
}
.nav-cta{
  background:linear-gradient(135deg,#c9a227,#9a7a20);color:#fff;font-size:13.5px;font-weight:600;
  padding:9px 18px;border-radius:999px;box-shadow:0 2px 10px rgba(201,162,39,.35);transition:transform .2s;
}
.nav-cta:hover{transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer;margin-left:auto;padding:6px}

/* ---------------- Hero ---------------- */
.hero{
  margin-top:var(--nav-h);
  position:relative;min-height:calc(100vh - var(--nav-h));
  display:flex;align-items:center;justify-content:center;text-align:center;
  background-size:cover;background-position:center;color:#fff;
}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,24,18,.55),rgba(30,24,18,.25) 55%,rgba(30,24,18,.7))}
.hero-inner{position:relative;z-index:1;max-width:820px;padding:40px 24px}
.hero-kicker{font-size:13px;letter-spacing:3px;color:#e6c560;text-transform:uppercase;margin-bottom:14px}
.hero h1{color:#fff;font-size:46px;line-height:1.3;margin-bottom:18px;text-shadow:0 2px 18px rgba(0,0,0,.4)}
.hero p{font-size:16.5px;color:rgba(255,255,255,.92);margin-bottom:32px}
.btn{
  display:inline-block;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;
  transition:all .2s;cursor:pointer;border:none;
}
.btn-gold{background:linear-gradient(135deg,#c9a227,#9a7a20);color:#fff;box-shadow:0 4px 18px rgba(201,162,39,.4)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,162,39,.5)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7);margin-left:12px}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-dark{background:var(--earth);color:#fff}
.btn-dark:hover{background:var(--earth-deep)}

/* ---------------- Section 通用 ---------------- */
.section{padding:72px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 44px}
.section-head .kicker{font-size:12.5px;letter-spacing:2.5px;color:var(--forest);text-transform:uppercase;margin-bottom:8px;font-weight:600}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:14.5px}

/* ---------------- 数据条 ---------------- */
.stats{background:var(--earth);color:#fff}
.stats-inner{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:48px 24px;text-align:center}
.stat-num{font-size:38px;font-weight:800;color:#e6c560;line-height:1.2}
.stat-num small{font-size:16px;font-weight:600;color:rgba(255,255,255,.8)}
.stat-label{font-size:13px;color:rgba(255,255,255,.75);margin-top:4px}

/* ---------------- 卡片 ---------------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.board-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s}
.board-card:hover{transform:translateY(-3px)}
/* 图片元素化（SEO：alt 可被搜索引擎读取） */
.prod-img,.case-img,.series-img,.board-img{display:block;width:100%;height:200px;object-fit:cover;object-position:center}
.prod-img{height:200px}
.case-img{height:210px}
.series-img{min-height:330px}
.board-img{height:118px}
.card-img img{width:100%;height:230px;object-fit:cover;object-position:center}
.board-card .board-body{padding:16px 18px 20px;flex:1;display:flex;flex-direction:column}
.board-card h3{font-size:16px;margin:8px 0 6px}
.board-card p{font-size:12.5px;color:var(--muted);line-height:1.6;flex:1}
.board-card .chips{margin-top:10px}
.card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 32px rgba(0,0,0,.12)}
.card-img{height:230px;background-size:cover;background-position:center;position:relative}
.card-img .tag{
  position:absolute;top:14px;left:14px;background:rgba(63,53,42,.85);color:#fff;
  font-size:12px;padding:4px 12px;border-radius:999px;letter-spacing:1px;
}
.card-body{padding:22px}
.card-body h3{font-size:18px;margin-bottom:8px}
.card-body p{font-size:13.5px;color:var(--muted)}
.card-body .price{font-size:19px;font-weight:800;color:var(--accent);margin-top:10px}
.card-body .meta{font-size:12.5px;color:var(--muted);margin-top:8px}
.card-link{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--forest);border-bottom:1.5px solid var(--forest);padding-bottom:2px}
.card-link:hover{color:var(--accent);border-color:var(--accent)}

/* ---------------- 产品系列卡（大卡） ---------------- */
.feature-card{max-width:900px;margin:34px auto 0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--white)}
.feature-card .feature-body{padding:22px;background:var(--white);text-align:center}
.feature-card h3{font-size:19px;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.8}
.series-card{display:grid;grid-template-columns:1fr 1fr;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.series-card .series-img{min-height:330px;background-size:cover;background-position:center}
.series-card .series-body{padding:36px;display:flex;flex-direction:column;justify-content:center}
.series-body .series-tag{display:inline-block;font-size:12px;letter-spacing:1.5px;color:#fff;background:var(--forest);border-radius:999px;padding:4px 14px;margin-bottom:14px;align-self:flex-start}
.series-body h3{font-size:24px;margin-bottom:10px}
.series-body p{font-size:14px;color:var(--muted);margin-bottom:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.chip{font-size:12.5px;background:var(--cream);color:var(--earth);border:1px solid var(--line);padding:4px 12px;border-radius:999px}

/* ---------------- 产品型号 ---------------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s}
.prod-card:hover{transform:translateY(-4px);box-shadow:0 10px 28px rgba(0,0,0,.12)}
.prod-img{height:200px;background-size:cover;background-position:center}
.prod-body{padding:18px}
.prod-body h3{font-size:16.5px;margin-bottom:4px}
.prod-body .en{font-size:12px;color:var(--muted);letter-spacing:1px;margin-bottom:6px}
.prod-body .desc{font-size:13px;color:var(--muted);margin-bottom:8px}
.prod-body .price{font-size:18px;font-weight:800;color:var(--accent)}

/* ---------------- 案例 ---------------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s}
.case-card:hover{transform:translateY(-4px)}
.case-img{height:210px;background-size:cover;background-position:center}
.case-body{padding:18px}
.case-body h3{font-size:16px;margin-bottom:4px}
.case-body .loc{font-size:12.5px;color:var(--muted)}

/* ---------------- 服务 ---------------- */
.service-card{background:var(--white);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow);transition:transform .25s}
.service-card:hover{transform:translateY(-4px)}
.service-icon{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,#c9a227,#8a6d1f);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;box-shadow:0 4px 12px rgba(201,162,39,.3)}
.service-icon svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.service-icon .ip-emoji{line-height:1}
.service-card h3{font-size:17.5px;margin-bottom:10px}
.service-card p{font-size:13.5px;color:var(--muted)}

/* ---------------- 理念/CTA 大色块 ---------------- */
.banner-band{
  background:linear-gradient(135deg,#3f352a,#5c4d3c);
  color:#fff;text-align:center;padding:64px 24px;
}
.banner-band h2{color:#fff;font-size:28px;margin-bottom:14px}
.banner-band p{color:rgba(255,255,255,.8);max-width:680px;margin:0 auto 28px;font-size:14.5px}

/* ---------------- IP 联名 ---------------- */
.ip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:820px;margin:0 auto}
.ip-card{background:var(--white);border-radius:var(--radius);padding:26px 12px;text-align:center;box-shadow:var(--shadow);transition:transform .25s}
.ip-card:hover{transform:translateY(-4px)}
.ip-icon{font-size:34px;margin-bottom:10px}
.ip-icon svg{width:40px;height:40px;stroke:var(--forest);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.ip-card h4{font-size:14.5px;color:var(--earth)}

/* ---------------- 联系/表单 ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.contact-item{display:flex;gap:14px;margin-bottom:22px}
.contact-item .ci-icon{flex:0 0 46px;height:46px;border-radius:10px;background:var(--cream);display:flex;align-items:center;justify-content:center;font-size:20px}
.contact-item .ci-icon svg{width:22px;height:22px;stroke:var(--gold);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.contact-item h4{font-size:14.5px;margin-bottom:2px}
.contact-item p{font-size:13.5px;color:var(--muted)}
.contact-item a{color:var(--forest);font-weight:600}
.form-card{background:var(--white);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--earth);font-weight:600;margin-bottom:6px}
.field input,.field textarea{
  width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:6px;font-size:14px;
  font-family:inherit;background:var(--sand);color:var(--text);transition:border-color .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--earth)}
.field textarea{resize:vertical;min-height:120px}
.field input.invalid,.field textarea.invalid{border-color:var(--accent)}
.field .field-hint{font-size:12px;color:var(--muted);margin-top:4px}
.field-check{display:flex;gap:8px;align-items:flex-start;margin-bottom:16px;font-size:12.5px;color:var(--muted)}
.field-check input{width:15px;height:15px;margin-top:2px;accent-color:var(--gold)}
.field-check a{color:var(--forest);font-weight:600;text-decoration:underline}
.form-msg{margin-top:12px;font-size:13.5px;font-weight:600;min-height:20px}
.form-msg.ok{color:var(--forest)}
.form-msg.err{color:var(--accent)}
.form-success{padding:28px 20px;text-align:center}
.form-success h4{font-size:18px;color:var(--forest);margin-bottom:8px}
.form-success p{font-size:13.5px;color:var(--muted);line-height:1.8}

/* ---------------- 历程 ---------------- */
.timeline{max-width:860px;margin:0 auto;position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:6px;width:18px;height:18px;border-radius:50%;
  background:linear-gradient(135deg,#c9a227,#8a6d1f);box-shadow:0 0 0 4px var(--sand);
}
.tl-year{font-size:15px;font-weight:800;color:var(--forest);margin-bottom:2px}
.tl-text{font-size:14.5px;color:var(--text)}

/* ---------------- 常见问题 FAQ ---------------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  padding:18px 22px;font-size:15px;font-weight:600;color:var(--earth);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;color:var(--gold);font-weight:700;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 22px 18px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------------- 隐私政策页 ---------------- */
.legal{max-width:860px;margin:0 auto;background:var(--white);border-radius:var(--radius);padding:44px 48px;box-shadow:var(--shadow)}
.legal h2{font-size:22px;margin:30px 0 10px}
.legal h2:first-child{margin-top:0}
.legal p,.legal li{font-size:14px;color:var(--text);line-height:1.9;margin-bottom:8px}
.legal ul{padding-left:22px;margin-bottom:14px}
.legal .legal-update{font-size:12.5px;color:var(--muted);margin-bottom:24px}

/* ---------------- 页脚 ---------------- */
.footer{background:var(--earth-deep);color:rgba(255,255,255,.72);margin-top:0}
.footer-main{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;padding:56px 24px 40px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer p,.footer a{font-size:13.5px;line-height:1.9}
.footer a:hover{color:#e6c560}
.footer-brand{font-size:17px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand small{display:block;font-size:12.5px;color:rgba(255,255,255,.5);font-weight:400;margin-top:6px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 24px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.qr{width:110px;height:110px;border-radius:8px;background:#fff;padding:6px}
.qr img{width:100%;height:100%;object-fit:contain}

/* ---------------- 面包屑/页头 ---------------- */
.page-hero{
  margin-top:var(--nav-h);text-align:center;color:#fff;
  background-size:cover;background-position:center;position:relative;
  display:flex;align-items:center;justify-content:center;
  min-height:20vw;padding:28px 24px;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(40,33,26,.62)}
.page-hero .ph-inner{position:relative;z-index:1}
.page-hero h1{color:#fff;font-size:28px;margin-bottom:6px}
.page-hero p{color:rgba(255,255,255,.85);font-size:14px}
/* 各页横幅背景：桌面 5:1 超宽 / 窄屏 16:9 */
.ph-about{background-image:url('/static/img/about-hero-wide.webp')}
.ph-products{background-image:url('/static/img/products-hero-wide.webp')}
.ph-services{background-image:url('/static/img/service-hero-wide.webp')}
.ph-cases{background-image:url('/static/img/case-hero-wide.webp')}
.ph-contact{background-image:url('/static/img/contact-hero-wide.webp')}

/* ---------------- 标杆合作·品牌动态 ---------------- */
.backdrop-band{background:linear-gradient(180deg,#f8f4ec,#fff)}
.backdrop-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;max-width:1160px;margin:0 auto}
.backdrop-card{background:var(--white);border-radius:14px;padding:34px 32px;box-shadow:var(--shadow);border-top:4px solid var(--gold);transition:transform .25s}
.backdrop-card:hover{transform:translateY(-4px)}
.backdrop-tag{display:inline-block;font-size:12px;letter-spacing:1px;color:#fff;background:var(--gold);border-radius:999px;padding:5px 14px;margin-bottom:16px}
.backdrop-card h3{font-size:22px;margin-bottom:8px;color:var(--earth)}
.backdrop-partner{font-size:14px;color:var(--gold);font-weight:600;margin-bottom:10px}
.backdrop-card p{font-size:14px;color:#5c5349;line-height:1.75;margin-bottom:18px}
.backdrop-primary{background:linear-gradient(135deg,#2e2923 0%,#453a2c 100%);border-top-color:var(--gold)}
.backdrop-primary h3{color:#fff}
.backdrop-primary .backdrop-partner{color:#e8c76a}
.backdrop-primary p{color:rgba(255,255,255,.82)}
.backdrop-primary .chip{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.28)}
@media (max-width:960px){
  .backdrop-grid{grid-template-columns:1fr}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:960px){
  .page-hero{min-height:56vw;padding:56px 24px}
  .page-hero h1{font-size:26px}
  .page-hero p{font-size:13.5px}
  .ph-about{background-image:url('/static/img/about-hero.webp')}
  .ph-products{background-image:url('/static/img/product-hero.webp')}
  .ph-services{background-image:url('/static/img/service-hero.webp')}
  .ph-cases{background-image:url('/static/img/case-hero.webp')}
  .ph-contact{background-image:url('/static/img/contact-hero.webp')}
  .grid-3,.grid-4,.grid-5,.case-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}
  .series-card{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:28px 16px}
  .contact-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .hero h1{font-size:34px}
}
@media (max-width:1024px){
  .nav-toggle{display:block}
  .nav-links{
    display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;
    background:var(--earth-deep);padding:16px 24px 20px;gap:6px;align-items:stretch;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 4px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:#e6c560}
  .nav-links .nav-cta{margin-top:8px;text-align:center;border-bottom:none}
  .nav-inner{gap:20px}
}
@media (max-width:680px){
  .grid-2,.grid-3,.grid-4,.grid-5,.case-grid,.prod-grid{grid-template-columns:1fr}
  .ip-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:52px 0}
  .section-head h2{font-size:24px}
  .hero h1{font-size:28px}
  .stat-num{font-size:30px}
  .legal{padding:28px 22px}
}