/* ========== Reset & Base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text-primary);line-height:1.7;background:#fff;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* ========== Color Tokens: 坤为土，钛为金，土生金 ========== */
:root{
  --earth-dark:#1A1410;--earth-dark-2:#2A2018;--earth-medium:#3D2E1F;
  --gold:#C4A050;--gold-light:#D4B060;--gold-dark:#A88838;
  --titanium:#B8B8B8;
  --bg-warm:#FAF7F2;--bg-soft:#F5F0E8;--bg-card:#FFFFFF;
  --text-primary:#1A1410;--text-secondary:#6B5D4F;--text-muted:#9A8B7A;
  --border:#E8DFD0;
  --shadow-sm:0 1px 3px rgba(26,20,16,.08);
  --shadow-md:0 4px 20px rgba(26,20,16,.10);
  --shadow-lg:0 12px 40px rgba(26,20,16,.15);
  --radius:12px;--max-width:1200px;
}

/* ========== Layout ========== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:var(--bg-soft)}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.5px}
.section-title .en{font-size:14px;color:var(--text-muted);letter-spacing:3px;text-transform:uppercase;margin-bottom:8px;display:block}
.section-title p{color:var(--text-secondary);font-size:16px;max-width:600px;margin:0 auto}
.title-bar{width:48px;height:3px;background:linear-gradient(90deg,var(--gold-dark),var(--gold),var(--gold-light));margin:0 auto 20px;border-radius:2px}

/* ========== Header / Nav ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(26,20,16,.95);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(196,160,80,.2);transition:all .3s ease;
}
.header.scrolled{background:rgba(26,20,16,.98);box-shadow:var(--shadow-md)}
.nav{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-img{height:44px;width:auto;filter:drop-shadow(0 1px 3px rgba(0,0,0,.4));transition:filter .3s}
.logo:hover .logo-img{filter:drop-shadow(0 2px 8px rgba(196,160,80,.4))}
.logo-text-group{display:flex;flex-direction:column;line-height:1.1}
.logo-text{font-size:22px;font-weight:800;color:var(--gold-light);letter-spacing:2px;font-family:"Arial Black",sans-serif}
.logo-sub{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:3px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{color:rgba(255,255,255,.85);font-size:15px;font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--gold-light)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gold);transition:width .3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{background:var(--gold);color:var(--earth-dark)!important;padding:8px 20px;border-radius:6px;font-weight:600!important}
.nav-cta:hover{background:var(--gold-light);transform:translateY(-1px);box-shadow:0 4px 12px rgba(196,160,80,.3)}
.nav-cta::after{display:none!important}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;width:40px;height:40px;position:relative}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--gold-light);position:absolute;left:9px;transition:all .3s}
.menu-toggle span:nth-child(1){top:13px}.menu-toggle span:nth-child(2){top:20px}.menu-toggle span:nth-child(3){top:27px}
.menu-toggle.active span:nth-child(1){top:20px;transform:rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){top:20px;transform:rotate(-45deg)}

/* ========== Hero ========== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:linear-gradient(135deg,#1A1410 0%,#2A2018 40%,#1F1812 100%);overflow:hidden;padding-top:72px}
.hero-bg-pattern{position:absolute;inset:0;opacity:.2;background-image:radial-gradient(circle at 20% 30%,rgba(196,160,80,.25) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(184,184,184,.1) 0%,transparent 50%)}
.hero-grid{position:absolute;inset:0;opacity:.06;background-image:linear-gradient(rgba(196,160,80,.3) 1px,transparent 1px),linear-gradient(90deg,rgba(196,160,80,.3) 1px,transparent 1px);background-size:60px 60px}
.hero-gold-glow{position:absolute;bottom:-200px;right:-100px;width:600px;height:600px;background:radial-gradient(circle,rgba(196,160,80,.12),transparent 70%);pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:var(--max-width);margin:0 auto;padding:0 24px;width:100%;display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(196,160,80,.12);border:1px solid rgba(196,160,80,.35);color:var(--gold-light);padding:6px 16px;border-radius:20px;font-size:13px;font-weight:500;margin-bottom:24px}
.hero-badge .dot{width:6px;height:6px;background:var(--gold-light);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:44px;font-weight:800;color:#fff;line-height:1.25;margin-bottom:20px;letter-spacing:-.5px}
.hero h1 .highlight{background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:17px;color:rgba(255,255,255,.7);margin-bottom:36px;max-width:520px;line-height:1.8}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .25s;border:none}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-light));color:var(--earth-dark);box-shadow:0 4px 16px rgba(196,160,80,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(196,160,80,.4)}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.btn-outline:hover{border-color:var(--gold-light);color:var(--gold-light);background:rgba(196,160,80,.06)}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-card{background:rgba(255,255,255,.04);border:1px solid rgba(196,160,80,.15);border-radius:16px;padding:28px;backdrop-filter:blur(10px);width:100%;max-width:380px}
.hero-card-title{color:var(--gold-light);font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:1px}
.hero-card-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.hero-card-row:last-child{border-bottom:none}
.hero-card-label{color:rgba(255,255,255,.55);font-size:13px}
.hero-card-value{color:#fff;font-size:14px;font-weight:600}
.hero-card-value.ok{color:#7CB342}
.hero-scroll{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.4);font-size:12px;display:flex;flex-direction:column;align-items:center;gap:8px;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}
.hero-scroll svg{width:20px;height:20px}

/* ========== About ========== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.about-text h2{font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.about-text .title-bar{margin:0 0 24px 0}
.about-text p{color:var(--text-secondary);margin-bottom:16px;font-size:15px}
.about-text p strong{color:var(--text-primary)}
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:32px}
.stat-item{background:var(--bg-soft);border-radius:var(--radius);padding:24px;border-left:3px solid var(--gold)}
.stat-number{font-size:36px;font-weight:800;background:linear-gradient(135deg,var(--gold-dark),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.stat-number span{font-size:18px;-webkit-text-fill-color:var(--gold-dark)}
.stat-label{color:var(--text-secondary);font-size:13px;margin-top:8px}
.about-visual{background:linear-gradient(135deg,var(--earth-dark) 0%,var(--earth-dark-2) 100%);border-radius:16px;padding:36px;position:relative;overflow:hidden}
.about-visual::before{content:'';position:absolute;top:-50%;right:-30%;width:300px;height:300px;background:radial-gradient(circle,rgba(196,160,80,.15),transparent 70%)}
.about-feature{position:relative;z-index:2;display:flex;gap:16px;margin-bottom:20px}
.about-feature:last-child{margin-bottom:0}
.about-feature-icon{width:44px;height:44px;border-radius:10px;background:rgba(196,160,80,.12);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.about-feature-icon svg{width:22px;height:22px;stroke:var(--gold-light)}
.about-feature h4{color:#fff;font-size:15px;margin-bottom:4px}
.about-feature p{color:rgba(255,255,255,.55);font-size:13px;line-height:1.6}

/* 双城布局 */
.dual-city{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:48px}
.city-card{background:#fff;border-radius:var(--radius);padding:32px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:all .3s}
.city-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--gold)}
.city-card h4{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:6px;display:flex;align-items:center;gap:10px}
.city-card h4 svg{width:20px;height:20px;stroke:var(--gold)}
.city-card .city-role{font-size:13px;color:var(--gold-dark);font-weight:600;margin-bottom:12px}
.city-card p{font-size:13.5px;color:var(--text-secondary);line-height:1.7;margin-bottom:8px}
.city-card .addr{font-size:13px;color:var(--text-muted);display:flex;align-items:flex-start;gap:6px;margin-top:12px}
.city-card .addr svg{width:14px;height:14px;stroke:var(--gold-dark);flex-shrink:0;margin-top:3px}

/* 企业文化 */
.culture-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.culture-item{text-align:center;padding:28px 20px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);transition:all .3s}
.culture-item:hover{border-color:var(--gold);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.culture-icon{width:52px;height:52px;margin:0 auto 14px;border-radius:50%;background:linear-gradient(135deg,rgba(196,160,80,.12),rgba(184,184,184,.06));display:flex;align-items:center;justify-content:center}
.culture-icon svg{width:26px;height:26px;stroke:var(--gold-dark)}
.culture-item h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.culture-item p{font-size:13px;color:var(--text-secondary);line-height:1.6}

/* 企业荣誉 */
.honors-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.honor-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px 16px;display:flex;align-items:flex-start;gap:12px;transition:all .3s}
.honor-item:hover{border-color:var(--gold);box-shadow:var(--shadow-sm)}
.honor-icon{width:36px;height:36px;border-radius:8px;background:rgba(196,160,80,.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.honor-icon svg{width:18px;height:18px;stroke:var(--gold-dark)}
.honor-item h5{font-size:13px;font-weight:600;color:var(--text-primary);line-height:1.4;margin-bottom:4px}
.honor-item .date{font-size:11px;color:var(--text-muted)}

/* ========== Service Center ========== */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-item{background:#fff;border-radius:var(--radius);padding:32px 24px;text-align:center;border:1px solid var(--border);transition:all .3s;position:relative;overflow:hidden}
.service-item::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--gold-dark),var(--gold-light));transform:scaleX(0);transition:transform .3s}
.service-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--gold)}
.service-item:hover::before{transform:scaleX(1)}
.service-item-icon{width:60px;height:60px;margin:0 auto 18px;border-radius:14px;background:linear-gradient(135deg,var(--earth-dark),var(--earth-medium));display:flex;align-items:center;justify-content:center}
.service-item-icon svg{width:30px;height:30px;stroke:var(--gold-light)}
.service-item h3{font-size:17px;font-weight:700;color:var(--text-primary);margin-bottom:10px}
.service-item p{font-size:13.5px;color:var(--text-secondary);line-height:1.7}
.service-item .tag{display:inline-block;margin-top:14px;font-size:11px;color:var(--gold-dark);background:rgba(196,160,80,.1);padding:4px 12px;border-radius:12px}

/* 核心服务能力卡片 */
.cards-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:48px}
.core-card{background:#fff;border-radius:var(--radius);padding:36px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:all .3s;position:relative;overflow:hidden}
.core-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--gold-dark),var(--gold),var(--gold-light));transform:scaleX(0);transform-origin:left;transition:transform .3s}
.core-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.core-card:hover::before{transform:scaleX(1)}
.core-icon{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--earth-dark),var(--earth-medium));display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.core-icon svg{width:28px;height:28px;stroke:var(--gold-light)}
.core-card h3{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:12px}
.core-card p{color:var(--text-secondary);font-size:14.5px;margin-bottom:20px;line-height:1.8}
.core-tags{display:flex;flex-wrap:wrap;gap:8px}
.core-tag{background:var(--bg-soft);color:var(--gold-dark);font-size:12.5px;padding:5px 14px;border-radius:20px;font-weight:500;border:1px solid rgba(196,160,80,.2)}

/* ========== Solutions ========== */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.industry-item{background:#fff;border-radius:var(--radius);padding:28px 24px;text-align:center;border:1px solid var(--border);transition:all .3s;cursor:default}
.industry-item:hover{border-color:var(--gold);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.industry-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.industry-icon.auto{background:linear-gradient(135deg,rgba(196,160,80,.15),rgba(196,160,80,.05))}
.industry-icon.med{background:linear-gradient(135deg,rgba(76,175,80,.12),rgba(76,175,80,.04))}
.industry-icon.factory{background:linear-gradient(135deg,rgba(255,152,0,.12),rgba(255,152,0,.04))}
.industry-icon.lab{background:linear-gradient(135deg,rgba(156,39,176,.12),rgba(156,39,176,.04))}
.industry-icon svg{width:28px;height:28px}
.industry-item h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.industry-item p{font-size:13px;color:var(--text-secondary);line-height:1.6}

/* 解决方案手风琴 */
.solution-accordion{margin-top:48px;display:flex;flex-direction:column;gap:16px}
.sol-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.sol-card:hover{border-color:var(--gold)}
.sol-header{display:flex;align-items:center;gap:20px;padding:24px 28px;cursor:pointer;transition:background .2s}
.sol-header:hover{background:var(--bg-soft)}
.sol-num{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;flex-shrink:0}
.sol-num.auto{background:rgba(196,160,80,.12);color:var(--gold-dark)}
.sol-num.med{background:rgba(76,175,80,.1);color:#388E3C}
.sol-num.factory{background:rgba(255,152,0,.1);color:#E65100}
.sol-num.lab{background:rgba(156,39,176,.1);color:#7B1FA2}
.sol-header-text{flex:1}
.sol-header-text h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.sol-header-text p{font-size:13.5px;color:var(--text-secondary)}
.sol-arrow{width:32px;height:32px;border-radius:50%;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;transition:transform .3s;flex-shrink:0}
.sol-arrow svg{width:16px;height:16px;stroke:var(--gold-dark);transition:transform .3s}
.sol-card.open .sol-arrow svg{transform:rotate(180deg)}
.sol-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
.sol-card.open .sol-body{max-height:500px}
.sol-body-inner{padding:0 28px 28px 92px;border-top:1px solid var(--border)}
.sol-body-inner h5{font-size:14px;font-weight:700;color:var(--text-primary);margin:20px 0 12px}
.sol-subsystems{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.sol-sub{background:var(--bg-soft);border-radius:8px;padding:14px;text-align:center;border:1px solid var(--border)}
.sol-sub h6{font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.sol-sub p{font-size:11px;color:var(--text-muted)}
.sol-tech{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.sol-tech-tag{font-size:12px;background:rgba(196,160,80,.1);color:var(--gold-dark);padding:4px 12px;border-radius:4px;font-weight:500}

/* 成功案例 */
.sol-cases{margin-top:8px;display:flex;flex-direction:column;gap:14px}
.sol-case{background:var(--bg-soft);border-radius:10px;padding:18px 20px;border-left:3px solid var(--gold);transition:all .25s}
.sol-case:hover{background:#fff;box-shadow:var(--shadow-sm);border-left-color:var(--gold-light)}
.sol-case-header{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.sol-case-year{font-size:12px;font-weight:700;color:var(--earth-dark);background:linear-gradient(135deg,var(--gold),var(--gold-light));padding:3px 10px;border-radius:4px;flex-shrink:0}
.sol-case-title{font-size:15px;font-weight:700;color:var(--text-primary)}
.sol-case p{font-size:13px;color:var(--text-secondary);line-height:1.7;margin-bottom:10px}
.sol-case-tags{display:flex;flex-wrap:wrap;gap:6px}
.sol-case-tag{font-size:11px;background:rgba(26,20,16,.06);color:var(--text-secondary);padding:3px 10px;border-radius:4px}

/* 技术优势 */
.tech-adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.tech-adv-item{text-align:center;padding:28px 20px}
.tech-adv-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:14px;background:linear-gradient(135deg,var(--earth-dark),var(--earth-medium));display:flex;align-items:center;justify-content:center}
.tech-adv-icon svg{width:28px;height:28px;stroke:var(--gold-light)}
.tech-adv-item h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.tech-adv-item p{font-size:13px;color:var(--text-secondary);line-height:1.7}

/* 服务流程 */
.process-wrap{position:relative;margin-top:48px}
.process-line{position:absolute;top:44px;left:8%;right:8%;height:2px;background:linear-gradient(90deg,var(--gold-dark),var(--gold),var(--titanium));z-index:0}
.process-steps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative;z-index:1}
.process-step{text-align:center}
.step-circle{width:80px;height:80px;border-radius:50%;background:#fff;border:2px solid var(--gold);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;position:relative;transition:all .3s}
.process-step:hover .step-circle{background:var(--earth-dark);border-color:var(--earth-dark);transform:scale(1.08)}
.process-step:hover .step-circle svg{stroke:var(--gold-light)}
.step-circle svg{width:32px;height:32px;stroke:var(--earth-dark);transition:stroke .3s}
.step-num{position:absolute;top:-4px;right:-4px;width:24px;height:24px;background:linear-gradient(135deg,var(--gold),var(--gold-light));color:var(--earth-dark);border-radius:50%;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.process-step h4{font-size:14px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.process-step p{font-size:11.5px;color:var(--text-secondary);line-height:1.5;padding:0 4px}

/* ========== Tech Stack ========== */
.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tech-card{background:var(--bg-soft);border-radius:var(--radius);padding:28px;border:1px solid var(--border);transition:all .3s}
.tech-card:hover{background:#fff;box-shadow:var(--shadow-md);border-color:var(--gold)}
.tech-card h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:12px;display:flex;align-items:center;gap:10px}
.tech-card h4 svg{width:20px;height:20px;stroke:var(--gold-dark)}
.tech-card p{font-size:13.5px;color:var(--text-secondary);line-height:1.7}
.tech-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.tech-tag{font-size:11.5px;background:rgba(196,160,80,.1);color:var(--gold-dark);padding:3px 10px;border-radius:4px}

/* ========== Data Banner ========== */
.data-banner{background:linear-gradient(135deg,var(--earth-dark) 0%,var(--earth-dark-2) 100%);padding:64px 0;position:relative;overflow:hidden}
.data-banner::before{content:'';position:absolute;inset:0;opacity:.08;background-image:linear-gradient(rgba(196,160,80,.3) 1px,transparent 1px),linear-gradient(90deg,rgba(196,160,80,.3) 1px,transparent 1px);background-size:40px 40px}
.data-banner::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:800px;height:400px;background:radial-gradient(ellipse,rgba(196,160,80,.08),transparent 70%)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:1}
.data-item{text-align:center}
.data-number{font-size:44px;font-weight:800;background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:8px}
.data-number span{font-size:22px}
.data-label{color:rgba(255,255,255,.6);font-size:14px}

/* ========== Contact ========== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.contact-info .subtitle{color:var(--text-secondary);font-size:15px;margin-bottom:32px}
.contact-methods{display:flex;flex-direction:column;gap:20px}
.contact-method{display:flex;gap:16px;align-items:flex-start;padding:20px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);transition:all .3s}
.contact-method:hover{border-color:var(--gold);box-shadow:var(--shadow-sm)}
.contact-method-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--earth-dark),var(--earth-medium));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-method-icon svg{width:22px;height:22px;stroke:var(--gold-light)}
.contact-method h4{font-size:15px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.contact-method p{font-size:14px;color:var(--text-secondary)}
.contact-method .value{font-size:18px;font-weight:700;color:var(--gold-dark);margin-top:2px}
.contact-cards{display:flex;flex-direction:column;gap:20px}
.contact-card{background:linear-gradient(135deg,var(--earth-dark),var(--earth-dark-2));border-radius:var(--radius);padding:28px;color:#fff;position:relative;overflow:hidden}
.contact-card::before{content:'';position:absolute;top:-30%;right:-20%;width:200px;height:200px;background:radial-gradient(circle,rgba(196,160,80,.15),transparent 70%)}
.contact-card h4{font-size:16px;font-weight:700;color:var(--gold-light);margin-bottom:12px;display:flex;align-items:center;gap:8px;position:relative}
.contact-card h4 .badge{font-size:11px;background:var(--gold);color:var(--earth-dark);padding:2px 8px;border-radius:4px;font-weight:700}
.contact-card p{font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:6px;position:relative;line-height:1.8}
.contact-card p strong{color:#fff}

/* ========== CTA Banner ========== */
.cta-banner{background:linear-gradient(135deg,#1A1410,#2A2018);padding:72px 0;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(196,160,80,.1),transparent 70%)}
.cta-banner h2{font-size:30px;font-weight:700;color:#fff;margin-bottom:16px;position:relative}
.cta-banner p{color:rgba(255,255,255,.65);font-size:16px;margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto;position:relative}
.cta-banner .btn{position:relative}

/* ========== Footer ========== */
.footer{background:#120E0A;color:rgba(255,255,255,.65);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}
.footer-brand .logo-text{color:var(--gold-light);font-size:22px;margin-bottom:4px;display:block;font-weight:800;letter-spacing:2px}
.footer-brand .logo-sub{color:rgba(255,255,255,.4);font-size:11px;letter-spacing:3px;margin-bottom:16px;display:block}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.5);margin-bottom:20px}
.footer-contact-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:13.5px}
.footer-contact-item svg{width:16px;height:16px;stroke:var(--gold);flex-shrink:0;margin-top:3px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--gold)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:13.5px;color:rgba(255,255,255,.5);transition:color .2s}
.footer-col ul li a:hover{color:var(--gold-light)}
.footer-qrcode{text-align:left}
.qr-box{width:110px;height:110px;background:#fff;border-radius:8px;margin:0 0 12px;display:flex;align-items:center;justify-content:center;padding:8px}
.qr-box svg{width:100%;height:100%}
.footer-qrcode p{font-size:12px;color:rgba(255,255,255,.45)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12.5px;color:rgba(255,255,255,.35)}
.footer-bottom a{color:rgba(255,255,255,.35);transition:color .2s}
.footer-bottom a:hover{color:var(--gold-light)}

/* ========== Back to Top ========== */
.back-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;background:var(--earth-dark);color:var(--gold-light);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all .3s;z-index:999;border:1px solid rgba(196,160,80,.3)}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{background:var(--gold);color:var(--earth-dark);transform:translateY(-3px)}
.back-top svg{width:20px;height:20px}

/* ========== Responsive ========== */
@media(max-width:1024px){
  .hero-content{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero p{margin-left:auto;margin-right:auto}.hero-buttons{justify-content:center}
  .hero-visual{display:none}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .dual-city{grid-template-columns:1fr}
  .culture-grid{grid-template-columns:repeat(2,1fr)}
  .honors-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .industry-grid{grid-template-columns:repeat(2,1fr)}
  .tech-adv-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr);gap:24px}
  .process-line{display:none}
  .sol-subsystems{grid-template-columns:repeat(2,1fr)}
  .sol-body-inner{padding-left:28px}
}
@media(max-width:768px){
  .section{padding:56px 0}.section-title h2{font-size:26px}
  .nav-links{position:fixed;top:72px;left:0;right:0;background:var(--earth-dark);flex-direction:column;gap:0;padding:0;max-height:0;overflow:hidden;transition:max-height .35s ease;border-bottom:1px solid rgba(196,160,80,.2)}
  .nav-links.open{max-height:500px}
  .nav-links a{display:block;padding:16px 24px;border-bottom:1px solid rgba(255,255,255,.05);width:100%}
  .nav-links a::after{display:none}
  .nav-cta{margin:16px 24px;text-align:center;border-radius:8px}
  .menu-toggle{display:block}
  .hero h1{font-size:30px}.hero p{font-size:15px}
  .cards-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .data-number{font-size:34px}
  .about-stats{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .back-top{bottom:20px;right:20px;width:42px;height:42px}
  .cta-banner h2{font-size:24px}
  .logo-img{height:38px}
  .honors-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .sol-subsystems{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .service-grid{grid-template-columns:1fr}
  .industry-grid{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
  .culture-grid{grid-template-columns:1fr}
  .tech-adv-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
  .btn{padding:12px 24px;font-size:14px}
  .process-steps{grid-template-columns:1fr}
}