/* ============================================================
   腾星汇企业官网 · 共享样式
   品牌色：深蓝 #1a2b4a + 金 #c9a96e
   ============================================================ */
:root{
  --navy:#1a2b4a;
  --navy-light:#2a3f6a;
  --navy-deep:#0f1c33;
  --gold:#c9a96e;
  --gold-light:#e0c896;
  --gold-dark:#a88a52;
  --bg-light:#f8f7f4;
  --bg-white:#ffffff;
  --text-dark:#1a1a2e;
  --text-gray:#6b7280;
  --text-light:rgba(255,255,255,0.72);
  --border-soft:rgba(26,43,74,0.08);
  --shadow-card:0 2px 20px rgba(26,43,74,0.07);
  --shadow-card-hover:0 12px 36px rgba(26,43,74,0.14);
  --ease-out:cubic-bezier(0.22,1,0.36,1);
  --container:1200px;
  --nav-h:72px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",sans-serif;
  color:var(--text-dark);
  background:var(--bg-white);
  line-height:1.75;
  padding-top:var(--nav-h);
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);
  background:rgba(15,28,51,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(201,169,110,0.18);
  transition:box-shadow .3s var(--ease-out);
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,0.25);}
.nav-wrap{max-width:var(--container);margin:0 auto;padding:0 24px;height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;}
.nav-brand{display:flex;align-items:center;gap:12px;}
.nav-brand img{height:40px;width:auto;}
.nav-brand-text{display:flex;flex-direction:column;line-height:1.3;}
.nav-brand-text strong{color:#fff;font-size:17px;letter-spacing:3px;}
.nav-brand-text span{color:var(--gold);font-size:10px;letter-spacing:2px;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  color:rgba(255,255,255,0.78);font-size:15px;padding:10px 16px;border-radius:6px;
  letter-spacing:1px;position:relative;transition:color .25s;
}
.nav-menu a::after{
  content:'';position:absolute;left:16px;right:16px;bottom:4px;height:2px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease-out);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--gold-light);font-weight:600;}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-cta{
  margin-left:14px;background:linear-gradient(135deg,var(--gold),var(--gold-dark));
  color:#fff !important;padding:9px 22px !important;border-radius:999px;font-weight:600;
  transition:transform .25s var(--ease-out),box-shadow .25s;
}
.nav-cta::after{display:none;}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(201,169,110,0.35);}
.nav-toggle{
  display:none;background:none;border:none;width:44px;height:44px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;transition:transform .3s var(--ease-out),opacity .2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:calc(92vh - var(--nav-h));display:flex;align-items:center;
  background:linear-gradient(135deg,var(--navy-deep) 0%,var(--navy) 55%,#243b5e 100%);
  color:#fff;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0.22;}
.hero::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 82% 18%,rgba(201,169,110,0.16) 0%,transparent 46%),
             radial-gradient(circle at 12% 85%,rgba(201,169,110,0.08) 0%,transparent 50%);
}
.hero-inner{position:relative;z-index:2;max-width:var(--container);margin:0 auto;padding:90px 24px;width:100%;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:4px;
  color:var(--gold-light);margin-bottom:26px;text-transform:uppercase;
}
.hero-kicker::before{content:'';width:36px;height:1px;background:var(--gold);}
.hero-title{
  font-size:clamp(34px,5.6vw,64px);font-weight:700;letter-spacing:4px;line-height:1.25;margin-bottom:22px;
}
.hero-title em{font-style:normal;color:var(--gold-light);}
.hero-sub{font-size:clamp(15px,2vw,19px);color:var(--text-light);max-width:640px;line-height:2;margin-bottom:44px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;}

/* 内页 Hero（较矮） */
.hero.hero-sub-page{min-height:320px;}
.hero.hero-sub-page .hero-inner{padding:70px 24px;}
.breadcrumb{font-size:13px;color:rgba(255,255,255,0.5);letter-spacing:1px;margin-top:18px;}
.breadcrumb a:hover{color:var(--gold-light);}
.breadcrumb span{color:var(--gold-light);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 34px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:2px;border:none;
  transition:transform .28s var(--ease-out),box-shadow .28s,background .28s;
}
.btn svg{width:17px;height:17px;}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#fff;}
.btn-gold:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(201,169,110,0.4);}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,0.45);}
.btn-outline:hover{border-color:var(--gold);color:var(--gold-light);transform:translateY(-3px);}
.btn-navy{background:var(--navy);color:#fff;}
.btn-navy:hover{background:var(--navy-light);transform:translateY(-3px);box-shadow:0 12px 28px rgba(26,43,74,0.3);}

/* ---------- Section 通用 ---------- */
.section{padding:clamp(64px,9vw,110px) 0;}
.section.alt{background:var(--bg-light);}
.section.dark{background:linear-gradient(160deg,var(--navy-deep),var(--navy));color:#fff;}
.section-head{text-align:center;margin-bottom:clamp(40px,6vw,64px);}
.section-eyebrow{
  font-size:12px;letter-spacing:6px;color:var(--gold);text-transform:uppercase;
  font-weight:600;margin-bottom:14px;
}
.section-title{font-size:clamp(26px,3.6vw,40px);font-weight:700;color:var(--navy);letter-spacing:3px;line-height:1.4;}
.dark .section-title{color:#fff;}
.section-line{width:44px;height:2px;background:var(--gold);margin:20px auto 0;}
.section-desc{max-width:680px;margin:18px auto 0;color:var(--text-gray);font-size:15px;}
.dark .section-desc{color:var(--text-light);}
.section-head.left{text-align:left;}
.section-head.left .section-line{margin-left:0;}
.section-head.left .section-desc{margin-left:0;}

/* ---------- 数据统计 ---------- */
.stats-band{background:var(--navy);position:relative;overflow:hidden;}
.stats-band::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 15% 50%,rgba(201,169,110,0.12),transparent 40%);
}
.stats-grid{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  gap:24px;padding:clamp(44px,6vw,64px) 0;
}
.stat-item{text-align:center;color:#fff;}
.stat-num{
  font-size:clamp(30px,4.4vw,52px);font-weight:700;color:var(--gold-light);line-height:1.15;
  letter-spacing:1px;
}
.stat-num small{font-size:0.5em;font-weight:600;margin-left:2px;}
.stat-label{font-size:13px;color:rgba(255,255,255,0.65);margin-top:10px;letter-spacing:2px;}

/* ---------- 卡片 ---------- */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:26px;}
.info-card{
  background:var(--bg-white);border-radius:12px;padding:34px 28px;
  box-shadow:var(--shadow-card);border-top:3px solid transparent;
  transition:transform .35s var(--ease-out),box-shadow .35s,border-color .35s;
}
.info-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);border-top-color:var(--gold);}
.info-card-icon{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));margin-bottom:20px;
}
.info-card-icon svg{width:25px;height:25px;color:#fff;}
.info-card h3{font-size:17px;font-weight:700;color:var(--navy);margin-bottom:10px;letter-spacing:1px;}
.info-card p{font-size:13.5px;color:var(--text-gray);line-height:1.9;}
.dark .info-card{background:rgba(255,255,255,0.05);border:1px solid rgba(201,169,110,0.2);border-top-width:1px;}
.dark .info-card:hover{border-color:var(--gold);background:rgba(255,255,255,0.08);}
.dark .info-card h3{color:var(--gold-light);}
.dark .info-card p{color:rgba(255,255,255,0.62);}

/* ---------- 业务板块 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;}
.biz-item{
  display:flex;gap:20px;background:var(--bg-white);border-radius:12px;padding:28px;
  box-shadow:var(--shadow-card);transition:transform .35s var(--ease-out),box-shadow .35s;
  border-left:3px solid var(--gold);
}
.biz-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);}
.biz-num{
  flex-shrink:0;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--navy),var(--navy-light));color:var(--gold-light);
  font-size:18px;font-weight:700;
}
.biz-item h4{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:6px;letter-spacing:1px;}
.biz-item p{font-size:13px;color:var(--text-gray);line-height:1.85;}

/* ---------- 案例卡片 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px;}
.case-card{
  background:var(--bg-white);border-radius:14px;overflow:hidden;cursor:pointer;
  box-shadow:var(--shadow-card);transition:transform .35s var(--ease-out),box-shadow .35s;
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-card-hover);}
.case-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--navy-deep);}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease-out);}
.case-card:hover .case-thumb img{transform:scale(1.06);}
.case-thumb .case-cat{
  position:absolute;top:14px;left:14px;background:rgba(15,28,51,0.82);color:var(--gold-light);
  font-size:11px;letter-spacing:2px;padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px);
}
.case-body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column;}
.case-body h4{font-size:16.5px;font-weight:700;color:var(--navy);margin-bottom:10px;line-height:1.5;}
.case-body .case-excerpt{font-size:13px;color:var(--text-gray);line-height:1.8;margin-bottom:16px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;}
.case-tag{
  font-size:11.5px;color:var(--gold-dark);background:rgba(201,169,110,0.12);
  border:1px solid rgba(201,169,110,0.3);padding:3px 11px;border-radius:999px;letter-spacing:0.5px;
}
.case-more{
  margin-top:16px;font-size:13px;color:var(--gold-dark);font-weight:600;letter-spacing:1px;
  display:inline-flex;align-items:center;gap:6px;
}
.case-more svg{width:15px;height:15px;transition:transform .3s;}
.case-card:hover .case-more svg{transform:translateX(4px);}

/* 案例筛选 tab */
.filter-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:44px;}
.filter-tab{
  padding:10px 26px;border-radius:999px;border:1px solid var(--border-soft);
  background:var(--bg-white);color:var(--text-gray);font-size:14px;letter-spacing:1px;
  transition:all .3s var(--ease-out);
}
.filter-tab:hover{border-color:var(--gold);color:var(--gold-dark);}
.filter-tab.active{background:var(--navy);color:var(--gold-light);border-color:var(--navy);font-weight:600;}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px;}
.news-card{
  background:var(--bg-white);border-radius:12px;padding:30px;box-shadow:var(--shadow-card);
  transition:transform .35s var(--ease-out),box-shadow .35s;display:flex;flex-direction:column;gap:14px;
  border-top:3px solid transparent;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);border-top-color:var(--gold);}
.news-date{font-size:12.5px;color:var(--gold-dark);letter-spacing:2px;font-weight:600;}
.news-card h4{font-size:16.5px;font-weight:700;color:var(--navy);line-height:1.55;}
.news-card p{font-size:13.5px;color:var(--text-gray);line-height:1.85;flex:1;}
.news-badge{
  align-self:flex-start;font-size:11px;color:#fff;background:var(--gold);
  padding:3px 10px;border-radius:4px;letter-spacing:1px;
}
.news-link{
  align-self:flex-start;margin-top:2px;font-size:13px;font-weight:600;color:var(--navy);
  letter-spacing:1px;text-decoration:none;transition:color .2s ease;
}
.news-link:hover{color:var(--gold-dark);}
.news-more{margin-top:42px;text-align:center;}

/* ---------- 图片网格 ---------- */
.img-grid{display:grid;gap:16px;}
.img-grid.four{grid-template-columns:repeat(4,1fr);}
.img-grid.three{grid-template-columns:repeat(3,1fr);}
.img-grid.two{grid-template-columns:repeat(2,1fr);}
.img-grid img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;
  transition:transform .4s var(--ease-out),box-shadow .4s;
}
.img-grid img:hover{transform:scale(1.03);box-shadow:var(--shadow-card-hover);}

/* ---------- 视频 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(460px,100%),1fr));gap:32px;}
.video-block h4{font-size:16px;color:#fff;font-weight:600;margin-bottom:6px;letter-spacing:1px;}
.video-block p{font-size:13px;color:var(--text-light);margin-bottom:16px;}
.video-wrapper{
  position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;
  background:#000;border:1px solid rgba(201,169,110,0.25);
}
.video-wrapper iframe,
.video-wrapper video{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000;object-fit:contain;}
.video-fallback{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13px;color:var(--gold);font-weight:600;letter-spacing:.5px;
  text-decoration:none;transition:color .2s ease;
}
.video-fallback svg{width:14px;height:14px;}
.video-fallback:hover{color:var(--gold-light);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:820px;margin:0 auto;padding-left:36px;}
.timeline::before{content:'';position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--gold),rgba(201,169,110,0.15));}
.timeline-item{position:relative;padding-bottom:36px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:'';position:absolute;left:-33px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 4px rgba(201,169,110,0.2);
}
.timeline-year{font-size:15px;font-weight:700;color:var(--gold-dark);letter-spacing:2px;margin-bottom:6px;}
.timeline-item h4{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:6px;}
.timeline-item p{font-size:13.5px;color:var(--text-gray);line-height:1.85;}

/* ---------- 城市 / 部门 ---------- */
.city-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;}
.city-card{
  background:var(--bg-white);border-radius:12px;padding:28px 20px;text-align:center;
  box-shadow:var(--shadow-card);transition:transform .3s var(--ease-out);border:1px solid transparent;
}
.city-card:hover{transform:translateY(-4px);border-color:rgba(201,169,110,0.4);}
.city-card.hq{background:linear-gradient(150deg,var(--navy),var(--navy-light));}
.city-card.hq h4,.city-card.hq p{color:#fff;}
.city-card.hq span{background:var(--gold);color:#fff;}
.city-card h4{font-size:20px;font-weight:700;color:var(--navy);letter-spacing:3px;}
.city-card span{
  display:inline-block;font-size:11px;letter-spacing:2px;color:var(--gold-dark);
  background:rgba(201,169,110,0.14);padding:3px 12px;border-radius:999px;margin:10px 0;
}
.city-card p{font-size:12.5px;color:var(--text-gray);}
.dept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;}
.dept-item{
  background:var(--bg-white);border:1px solid var(--border-soft);border-radius:8px;
  padding:16px 12px;text-align:center;font-size:13.5px;color:var(--navy);font-weight:600;
  letter-spacing:1px;transition:all .3s var(--ease-out);
}
.dept-item:hover{border-color:var(--gold);color:var(--gold-dark);transform:translateY(-3px);}

/* ---------- 品牌矩阵 ---------- */
.brand-matrix{
  display:grid;grid-template-columns:1fr auto 1fr;gap:22px;align-items:stretch;
  max-width:960px;margin:0 auto;
}
.brand-card{
  background:var(--bg-white);border-radius:16px;padding:32px 30px;
  box-shadow:var(--shadow-card);border-top:3px solid var(--gold);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .35s var(--ease-out),box-shadow .35s;
}
.brand-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);}
.brand-card--main{
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-light) 100%);
  border-top-color:var(--gold);
}
.brand-card--sub{border-top-color:var(--gold-dark);}
.brand-card-head{display:flex;align-items:center;gap:14px;}
.brand-badge{
  flex-shrink:0;width:68px;height:68px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:28px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));
  box-shadow:0 6px 16px rgba(201,169,110,0.3);
}
.brand-badge--sub{background:linear-gradient(135deg,#3a5a8c,#1a2b4a);}
.brand-logo-img{width:68px;height:68px;border-radius:16px;object-fit:contain;}
.brand-badge--logo{background:transparent;box-shadow:none;}
.brand-name{font-size:21px;font-weight:700;letter-spacing:2px;line-height:1.25;}
.brand-card--main .brand-name{color:#fff;}
.brand-card--sub .brand-name{color:var(--navy);}
.brand-en{display:block;font-size:11px;letter-spacing:2px;margin-top:3px;}
.brand-card--main .brand-en{color:var(--gold-light);}
.brand-card--sub .brand-en{color:var(--gold-dark);}
.brand-role{
  align-self:flex-start;font-size:12px;letter-spacing:1px;font-weight:600;
  padding:5px 14px;border-radius:999px;
  background:rgba(201,169,110,0.14);color:var(--gold-dark);
}
.brand-card--main .brand-role{background:rgba(201,169,110,0.22);color:var(--gold-light);}
.brand-desc{font-size:13.5px;line-height:1.9;flex:1;}
.brand-card--main .brand-desc{color:rgba(255,255,255,0.8);}
.brand-card--sub .brand-desc{color:var(--text-gray);}
.brand-link{
  align-self:center;color:var(--gold);
  display:flex;align-items:center;justify-content:center;width:40px;
}
.brand-link svg{width:30px;height:30px;}
.brand-note{
  max-width:760px;margin:36px auto 0;text-align:center;
  font-size:13px;color:var(--text-gray);line-height:1.9;
}
@media (max-width:767px){
  .brand-matrix{grid-template-columns:1fr;gap:16px;}
  .brand-link{width:auto;transform:rotate(90deg);}
}

/* ---------- 企业文化 ---------- */
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;}
.value-card{
  background:var(--bg-white);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .35s var(--ease-out),box-shadow .35s;
}
.value-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);}
.value-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.value-card-body{padding:24px 26px 28px;}
.value-card h4{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:8px;letter-spacing:2px;}
.value-card p{font-size:13.5px;color:var(--text-gray);line-height:1.9;}

/* ---------- 合作伙伴 ---------- */
.partner-list{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.partner-tag{
  background:var(--bg-white);border:1px solid var(--border-soft);border-radius:999px;
  padding:11px 26px;font-size:14px;color:var(--navy);letter-spacing:1px;font-weight:500;
  transition:all .3s var(--ease-out);
}
.partner-tag:hover{border-color:var(--gold);color:var(--gold-dark);transform:translateY(-3px);box-shadow:0 8px 18px rgba(201,169,110,0.18);}
.dark .partner-tag{background:rgba(255,255,255,0.06);border-color:rgba(201,169,110,0.25);color:rgba(255,255,255,0.85);}
.dark .partner-tag:hover{color:var(--gold-light);border-color:var(--gold);}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--navy-deep) 0%,var(--navy) 60%,#2c4a75 100%);
  position:relative;overflow:hidden;color:#fff;text-align:center;
  padding:clamp(60px,8vw,96px) 24px;
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 78% 30%,rgba(201,169,110,0.18),transparent 46%);
}
.cta-band h2{position:relative;font-size:clamp(24px,3.4vw,38px);font-weight:700;letter-spacing:3px;margin-bottom:16px;}
.cta-band p{position:relative;color:var(--text-light);font-size:15px;max-width:560px;margin:0 auto 36px;}
.cta-band .btn{position:relative;}

/* ---------- 表单 ---------- */
.contact-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.contact-panel{display:flex;flex-direction:column;gap:22px;}
.contact-card{
  display:flex;gap:18px;background:var(--bg-white);border-radius:12px;padding:26px;
  box-shadow:var(--shadow-card);align-items:flex-start;
}
.contact-card-icon{
  flex-shrink:0;width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));
}
.contact-card-icon svg{width:22px;height:22px;color:#fff;}
.contact-card h4{font-size:13px;color:var(--text-gray);letter-spacing:2px;margin-bottom:5px;}
.contact-card p{font-size:15.5px;color:var(--navy);font-weight:600;line-height:1.7;}
.contact-card a:hover{color:var(--gold-dark);}
.wechat-card{align-items:flex-start;}
.qr-wrap{display:flex;flex-direction:column;gap:8px;margin-top:12px;}
.wechat-qr{
  width:110px;height:110px;border-radius:10px;object-fit:cover;
  border:1px solid var(--border-soft);box-shadow:var(--shadow-card);background:#fff;
  transition:transform .25s ease,box-shadow .25s ease;
}
.wechat-qr:hover{transform:scale(1.05);box-shadow:var(--shadow-card-hover);}
.qr-tip{font-size:12px;color:var(--text-gray);letter-spacing:.5px;}
.form-card{background:var(--bg-white);border-radius:16px;padding:clamp(28px,4vw,44px);box-shadow:var(--shadow-card);}
.form-card h3{font-size:20px;color:var(--navy);font-weight:700;letter-spacing:2px;margin-bottom:6px;}
.form-card > p{font-size:13px;color:var(--text-gray);margin-bottom:28px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-size:13.5px;color:var(--navy);font-weight:600;margin-bottom:8px;letter-spacing:1px;}
.form-group label em{color:#d14343;font-style:normal;margin-left:3px;}
.form-group input,.form-group textarea{
  width:100%;padding:13px 16px;border:1px solid var(--border-soft);border-radius:10px;
  font-family:inherit;font-size:14.5px;color:var(--text-dark);background:var(--bg-light);
  transition:border-color .25s,box-shadow .25s,background .25s;
}
.form-group input:focus,.form-group textarea:focus{
  outline:none;border-color:var(--gold);background:#fff;box-shadow:0 0 0 3px rgba(201,169,110,0.18);
}
.form-group textarea{resize:vertical;min-height:130px;}
.form-error{font-size:12.5px;color:#d14343;margin-top:6px;display:none;}
.form-group.invalid input,.form-group.invalid textarea{border-color:#d14343;}
.form-group.invalid .form-error{display:block;}
.form-note{font-size:12px;color:var(--text-gray);margin-top:14px;}

/* Toast */
.toast{
  position:fixed;bottom:32px;left:50%;transform:translate(-50%,20px);z-index:3000;
  background:var(--navy);color:#fff;padding:15px 30px;border-radius:999px;font-size:14.5px;
  box-shadow:0 12px 36px rgba(0,0,0,0.28);opacity:0;pointer-events:none;
  transition:opacity .35s var(--ease-out),transform .35s var(--ease-out);
  display:flex;align-items:center;gap:10px;letter-spacing:1px;
}
.toast.show{opacity:1;transform:translate(-50%,0);}
.toast svg{width:18px;height:18px;color:var(--gold-light);flex-shrink:0;}

/* ---------- 案例弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:2000;display:none;}
.modal.active{display:flex;align-items:center;justify-content:center;padding:24px;}
.modal-overlay{position:absolute;inset:0;background:rgba(10,18,35,0.75);backdrop-filter:blur(4px);}
.modal-content{
  position:relative;z-index:1;background:#fff;border-radius:16px;max-width:760px;width:100%;
  max-height:86vh;display:flex;flex-direction:column;overflow:hidden;
  animation:modalIn .35s var(--ease-out);
}
@keyframes modalIn{from{opacity:0;transform:translateY(26px) scale(0.97);}to{opacity:1;transform:none;}}
.modal-header{padding:26px 32px 18px;border-bottom:1px solid var(--border-soft);}
.modal-header h3{font-size:19px;color:var(--navy);font-weight:700;letter-spacing:1px;padding-right:40px;}
.modal-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.modal-body{padding:22px 32px 32px;overflow-y:auto;}
.modal-body p{font-size:14px;color:var(--text-gray);line-height:2;margin-bottom:14px;}
.modal-images{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:8px;}
.modal-images.single{grid-template-columns:1fr;}
.modal-images img{width:100%;border-radius:10px;object-fit:cover;}
.modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;border:none;
  background:var(--bg-light);color:var(--navy);font-size:22px;line-height:1;z-index:2;
  transition:background .25s,transform .25s;
}
.modal-close:hover{background:var(--gold);color:#fff;transform:rotate(90deg);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy-deep);color:rgba(255,255,255,0.65);}
.footer-main{
  max-width:var(--container);margin:0 auto;padding:clamp(48px,7vw,72px) 24px 40px;
  display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:44px;
}
.footer-brand img{height:44px;margin-bottom:18px;}
.footer-brand p{font-size:13px;line-height:2;max-width:300px;}
.footer-col h4{
  font-size:14px;color:#fff;font-weight:700;letter-spacing:2px;margin-bottom:20px;
  padding-bottom:10px;position:relative;
}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--gold);}
.footer-col ul li{margin-bottom:11px;}
.footer-col a{font-size:13.5px;transition:color .25s,padding-left .25s;}
.footer-col a:hover{color:var(--gold-light);padding-left:5px;}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;margin-bottom:13px;line-height:1.8;}
.footer-contact svg{width:16px;height:16px;color:var(--gold);flex-shrink:0;margin-top:5px;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,0.18);
  display:flex;align-items:center;justify-content:center;transition:all .3s var(--ease-out);
}
.footer-social a:hover{border-color:var(--gold);background:rgba(201,169,110,0.15);transform:translateY(-3px);}
.footer-social svg{width:17px;height:17px;color:rgba(255,255,255,0.75);}
.footer-social a:hover svg{color:var(--gold-light);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);padding:20px 24px;text-align:center;
  font-size:12.5px;color:rgba(255,255,255,0.4);letter-spacing:1px;
}
.footer-bottom a:hover{color:var(--gold-light);}
.beian-line{margin-top:8px;font-size:12px;letter-spacing:.5px;}
.beian-link{color:rgba(255,255,255,0.55);text-decoration:none;}
.beian-link:hover{color:var(--gold-light);}

/* ---------- 回到顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:30px;z-index:900;width:46px;height:46px;border-radius:50%;
  border:none;background:var(--navy);color:var(--gold-light);display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(15,28,51,0.35);opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s,transform .3s var(--ease-out),background .3s;
}
.back-top.show{opacity:1;pointer-events:auto;transform:none;}
.back-top:hover{background:var(--gold-dark);color:#fff;}
.back-top svg{width:20px;height:20px;}

/* ---------- 滚动入场动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out);}
.reveal.visible{opacity:1;transform:none;}
.reveal-d1{transition-delay:.08s;}
.reveal-d2{transition-delay:.16s;}
.reveal-d3{transition-delay:.24s;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:center;}
.split-media img{width:100%;border-radius:14px;box-shadow:var(--shadow-card-hover);}
.split-body .section-eyebrow{margin-bottom:12px;}
.split-body h2{font-size:clamp(24px,3vw,34px);color:var(--navy);font-weight:700;letter-spacing:2px;margin-bottom:20px;line-height:1.5;}
.split-body p{font-size:14.5px;color:var(--text-gray);line-height:2.05;margin-bottom:14px;text-align:justify;}
.split-body strong{color:var(--navy);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .footer-main{grid-template-columns:1fr 1fr;}
  .contact-layout{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px;}
}
@media (max-width:767px){
  :root{--nav-h:62px;}
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;
    background:var(--navy-deep);padding:14px 20px 26px;gap:2px;
    border-bottom:1px solid rgba(201,169,110,0.2);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform .3s var(--ease-out),opacity .3s;
  }
  .nav-menu.open{transform:none;opacity:1;pointer-events:auto;}
  .nav-menu a{padding:14px 10px;font-size:16px;border-bottom:1px solid rgba(255,255,255,0.06);}
  .nav-menu a::after{display:none;}
  .nav-cta{margin:16px 0 0;text-align:center;justify-content:center;display:flex;}
  .hero{min-height:72vh;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .split{grid-template-columns:1fr;}
  .img-grid.four{grid-template-columns:repeat(2,1fr);}
  .img-grid.three{grid-template-columns:repeat(2,1fr);}
  .form-row{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr;gap:34px;}
  .modal-images{grid-template-columns:1fr;}
  .back-top{right:18px;bottom:22px;}
}
@media (max-width:479px){
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .img-grid.four{grid-template-columns:repeat(2,1fr);}
}