/* ===== Densply V2 Light Theme ===== */
:root {
  --bg: #f7f8fa;
  --bg-alt: #ffffff;
  --bg-card: #ffffff;
  --primary: #1a5fce;
  --primary-light: #e8f0fe;
  --primary-dark: #0d47a1;
  --gold: #d4942b;
  --gold-light: #f5e6d0;
  --text: #1a1a2e;
  --text-dim: #5a5a72;
  --text-muted: #8e8ea0;
  --border: #e2e4ea;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-sm: 6px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'Noto Sans SC',-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
.container{max-width:1280px;margin:0 auto;padding:0 40px;position:relative;z-index:1}
.topbar{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);box-shadow:0 1px 4px rgba(0,0,0,0.04)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:1280px;margin:0 auto;padding:0 40px}
.logo{font-family:'DM Serif Display',serif;font-size:1.6rem;color:var(--primary);text-decoration:none;font-weight:700}
.logo span{color:var(--text);font-weight:400;font-size:0.85rem;margin-left:8px;font-family:'Noto Sans SC',sans-serif}
.nav-links{display:flex;gap:36px;list-style:none}
.nav-links a{color:var(--text-dim);text-decoration:none;font-size:0.875rem;transition:color 0.3s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary);font-weight:500}
.nav-links a.active::after{content:'';position:absolute;bottom:-6px;left:0;right:0;height:2px;background:var(--primary);border-radius:1px}
.page-header{padding:140px 0 60px;text-align:center}
.page-header h1{font-size:2.6rem;font-weight:900;color:var(--text);letter-spacing:-0.02em;margin-bottom:12px}
.page-header h1 span{color:var(--primary)}
.page-header p{color:var(--text-dim);font-size:1.05rem;max-width:560px;margin:0 auto;line-height:1.8}
.filter-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:0 0 50px}
.filter-btn{padding:10px 24px;border-radius:100px;border:1px solid var(--border);background:var(--bg-alt);color:var(--text-dim);font-size:0.875rem;cursor:pointer;transition:all 0.3s;font-family:inherit}
.filter-btn:hover{border-color:var(--primary);color:var(--primary)}
.filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-bottom:80px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all 0.3s;cursor:pointer;box-shadow:var(--shadow)}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.card-img{height:200px;background:linear-gradient(135deg,#e8f0fe,#f0f4ff);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-img-icon{font-size:3rem;opacity:0.25}
.card-img-overlay{position:absolute;inset:0;background:rgba(26,95,206,0.03);display:flex;align-items:flex-end;padding:20px;opacity:0;transition:all 0.3s}
.product-card:hover .card-img-overlay{opacity:1}
.card-img-overlay span{color:var(--primary);font-size:0.8rem;font-weight:600;letter-spacing:0.04em}
.card-body{padding:22px}
.card-tag{display:inline-block;padding:3px 12px;border-radius:100px;background:var(--primary-light);color:var(--primary);font-size:0.7rem;font-weight:600;letter-spacing:0.04em;margin-bottom:10px}
.card-body h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text);line-height:1.4}
.card-body h3 a{color:var(--text);text-decoration:none}
.card-body h3 a:hover{color:var(--primary)}
.card-body p{color:var(--text-dim);font-size:0.85rem;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-specs{display:flex;gap:20px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.card-specs .spec{text-align:center;flex:1}
.spec-value{font-size:1.05rem;font-weight:700;color:var(--primary);font-family:'DM Serif Display',serif}
.spec-label{font-size:0.7rem;color:var(--text-muted);margin-top:2px}
.solution-block{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding:60px 0;border-bottom:1px solid var(--border)}
.solution-block.reverse{direction:rtl}
.solution-block.reverse>*{direction:ltr}
.solution-tag{display:inline-block;padding:4px 16px;border-radius:100px;background:var(--primary-light);color:var(--primary);font-size:0.75rem;font-weight:600;margin-bottom:16px}
.solution-content h2{font-size:1.8rem;font-weight:800;margin-bottom:16px;color:var(--text)}
.solution-content p{color:var(--text-dim);font-size:0.95rem;line-height:1.8;margin-bottom:24px}
.solution-highlights{display:flex;gap:24px;margin-bottom:28px}
.highlight{text-align:center;flex:1}
.hl-value{display:block;font-size:1.6rem;font-weight:800;color:var(--primary);font-family:'DM Serif Display',serif}
.hl-label{font-size:0.75rem;color:var(--text-muted)}
.solution-visual{height:320px;background:linear-gradient(135deg,#e8f0fe,#f0f4ff);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;border:1px solid var(--border)}
.visual-placeholder{font-size:5rem;opacity:0.3}
.stats-bar{padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:24px;background:var(--bg-alt);border-radius:var(--radius);border:1px solid var(--border)}
.stat-num{font-size:2rem;font-weight:800;color:var(--primary);font-family:'DM Serif Display',serif}
.stat-label{font-size:0.8rem;color:var(--text-muted);margin-top:4px}
.cases-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;padding-bottom:80px}
.case-card{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all 0.3s;box-shadow:var(--shadow)}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.case-img{height:220px;background:linear-gradient(135deg,#e8f0fe,#f0f4ff);overflow:hidden}
.case-img img{width:100%;height:100%;object-fit:cover}
.case-img-placeholder{height:100%;display:flex;align-items:center;justify-content:center;font-size:3rem;opacity:0.25;color:var(--text-muted)}
.case-body{padding:24px}
.case-tag{display:inline-block;padding:3px 12px;border-radius:100px;background:var(--primary-light);color:var(--primary);font-size:0.7rem;font-weight:600;margin-bottom:10px}
.case-body h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.case-body h3 a{color:var(--text);text-decoration:none}
.case-body h3 a:hover{color:var(--primary)}
.case-body p{color:var(--text-dim);font-size:0.85rem;line-height:1.6;margin-bottom:16px}
.case-meta{display:flex;gap:24px}
.case-meta-item{flex:1;text-align:center;padding-top:12px;border-top:1px solid var(--border)}
.meta-value{display:block;font-size:1.1rem;font-weight:700;color:var(--primary)}
.meta-label{font-size:0.7rem;color:var(--text-muted)}
.section{padding:60px 0}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.intro-text h2{font-size:1.8rem;font-weight:800;margin-bottom:20px;color:var(--text)}
.intro-text p{color:var(--text-dim);font-size:0.95rem;line-height:1.8;margin-bottom:16px}
.intro-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.intro-stat{text-align:center;padding:28px 16px;background:var(--bg-alt);border-radius:var(--radius);border:1px solid var(--border)}
.stat-value{display:block;font-size:2rem;font-weight:800;color:var(--primary);font-family:'DM Serif Display',serif}
.stat-desc{font-size:0.8rem;color:var(--text-muted);margin-top:4px}
.section-title-gradient{font-size:1.6rem;font-weight:800;text-align:center;margin-bottom:40px;color:var(--text)}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-card{text-align:center;padding:36px 24px;background:var(--bg-alt);border-radius:var(--radius);border:1px solid var(--border);transition:all 0.3s}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.value-icon{font-size:2.5rem;margin-bottom:16px}
.value-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px;color:var(--text)}
.value-card p{color:var(--text-dim);font-size:0.85rem;line-height:1.6}
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:var(--border)}
.timeline-item{position:relative;padding:20px 0}
.timeline-year{position:absolute;left:-40px;top:20px;width:30px;height:30px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.65rem;font-weight:700}
.timeline-content{padding-left:16px;font-size:0.95rem;color:var(--text-dim)}
.cta-section{text-align:center;padding:80px 0 100px}
.cta-section h2{font-size:2rem;font-weight:700;margin-bottom:12px;color:var(--text)}
.cta-section p{color:var(--text-dim);margin-bottom:28px;font-size:1rem}
.btn-primary{display:inline-block;padding:14px 40px;background:var(--primary);color:#fff;border:none;border-radius:100px;font-size:0.95rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all 0.3s;font-family:inherit}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(26,95,206,0.3)}
.footer{border-top:1px solid var(--border);padding:40px 0;text-align:center;background:var(--bg-alt)}
.footer p{color:var(--text-muted);font-size:0.8rem}
.footer a{color:var(--text-muted);text-decoration:none}
.footer a:hover{color:var(--primary)}
@media(max-width:1024px){.product-grid{grid-template-columns:repeat(2,1fr)}.page-header h1{font-size:2rem}.solution-block{grid-template-columns:1fr;gap:30px}.solution-block.reverse{direction:ltr}.stats-grid{grid-template-columns:repeat(2,1fr)}.values-grid{grid-template-columns:repeat(2,1fr)}.intro-grid{grid-template-columns:1fr}}
@media(max-width:640px){.product-grid{grid-template-columns:1fr}.nav-links{display:none}.container{padding:0 20px}.page-header{padding:120px 0 40px}.page-header h1{font-size:1.6rem}.cases-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.values-grid{grid-template-columns:1fr}.solution-highlights{flex-wrap:wrap}}

/* ===== 首页Hero区 ===== */
.hero-section{position:relative;padding:200px 0 100px;background:linear-gradient(135deg,#0d47a1 0%,#1a5fce 50%,#2196f3 100%);color:#fff;overflow:hidden}
.hero-overlay{position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23ffffff" fill-opacity="0.05"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
.hero-content{position:relative;z-index:2}
.hero-section h1{font-size:3.2rem;font-weight:900;margin-bottom:16px;letter-spacing:-0.02em}
.hero-section h1 span{color:#d4942b}
.hero-subtitle{font-size:1.15rem;opacity:0.9;margin-bottom:40px;max-width:600px}
.hero-stats{display:flex;gap:40px;margin-bottom:40px}
.hero-stat{text-align:center}
.hs-num{display:block;font-size:2.2rem;font-weight:800;font-family:'DM Serif Display',serif}
.hs-label{font-size:0.8rem;opacity:0.8}
.hero-actions{display:flex;gap:16px}
.btn-outline{display:inline-block;padding:14px 40px;background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.6);border-radius:100px;font-size:0.95rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all 0.3s;font-family:inherit}
.btn-outline:hover{background:rgba(255,255,255,0.15);border-color:#fff}

/* ===== 业务板块 ===== */
.business-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.business-card{display:block;padding:40px 28px;background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:var(--text);transition:all 0.3s;box-shadow:var(--shadow)}
.business-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.biz-icon{font-size:2.8rem;margin-bottom:20px}
.business-card h3{font-size:1.2rem;font-weight:700;margin-bottom:12px}
.business-card p{color:var(--text-dim);font-size:0.9rem;line-height:1.7;margin-bottom:16px}
.biz-link{color:var(--primary);font-size:0.85rem;font-weight:600}

@media(max-width:1024px){.hero-section h1{font-size:2.2rem}.hero-stats{gap:24px}.business-grid{grid-template-columns:1fr}}
@media(max-width:640px){.hero-section{padding:140px 0 60px}.hero-section h1{font-size:1.8rem}.hero-stats{flex-wrap:wrap;gap:16px}.hero-stat{flex:1;min-width:80px}.hs-num{font-size:1.6rem}.hero-actions{flex-direction:column}}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--text-muted);padding-bottom:8px}
.breadcrumb a{color:var(--primary);text-decoration:none}
.breadcrumb-sep{color:var(--text-muted)}
.breadcrumb-current{color:var(--text)}

/* ===== Contact页面 ===== */
.contact-section{padding:40px 0 80px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info-panel{padding:30px;background:var(--bg-alt);border-radius:var(--radius);border:1px solid var(--border)}
.contact-info-panel h2{font-size:1.3rem;font-weight:700;margin-bottom:24px;color:var(--text)}
.contact-item{display:flex;gap:16px;margin-bottom:20px}
.contact-icon{width:44px;height:44px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0}
.contact-detail h4{font-size:0.9rem;font-weight:600;margin-bottom:4px;color:var(--text)}
.contact-detail a{display:block;color:var(--text-dim);font-size:0.9rem;text-decoration:none;line-height:1.8}
.contact-detail a:hover{color:var(--primary)}
.contact-form-panel{padding:30px;background:var(--bg-alt);border-radius:var(--radius);border:1px solid var(--border)}
.contact-form-panel h2{font-size:1.3rem;font-weight:700;margin-bottom:24px;color:var(--text)}
.contact-form-panel input[type=text],.contact-form-panel input[type=email],.contact-form-panel input[type=tel],.contact-form-panel textarea{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:0.9rem;font-family:inherit;margin-bottom:16px;background:var(--bg);color:var(--text);transition:border-color 0.3s}
.contact-form-panel input:focus,.contact-form-panel textarea:focus{outline:none;border-color:var(--primary)}
.contact-form-panel textarea{min-height:120px;resize:vertical}
.contact-form-panel input[type=submit]{background:var(--primary);color:#fff;border:none;padding:14px 40px;border-radius:100px;font-size:0.95rem;font-weight:600;cursor:pointer;transition:background 0.3s;font-family:inherit}
.contact-form-panel input[type=submit]:hover{background:var(--primary-dark)}
.contact-social{margin-top:24px}
.social-links{display:flex;gap:12px}
.social-links a{width:40px;height:40px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);text-decoration:none;transition:all 0.3s}
.social-links a:hover{background:var(--primary);color:#fff}
.contact-map{margin-top:30px}
.map-container{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.map-container iframe{width:100%;height:300px;border:0}
.page-subtitle{color:var(--text-dim);font-size:1rem;margin-top:8px}

/* ===== Timeline ===== */
.timeline{position:relative;padding:20px 0}
.timeline::before{content:;position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--border);transform:translateX(-50%)}
.timeline-item{position:relative;padding:20px 0;display:flex;justify-content:flex-end;padding-right:calc(50% + 30px)}
.timeline-item:nth-child(even){justify-content:flex-start;padding-right:0;padding-left:calc(50% + 30px)}
.timeline-content{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);padding:20px;max-width:400px}
.timeline-year{font-size:1.2rem;font-weight:700;color:var(--primary)}
.timeline-text{color:var(--text-dim);font-size:0.9rem;margin-top:8px;line-height:1.7}

/* ===== 浮动按钮 ===== */
.densply-float-bar{position:fixed;right:20px;bottom:80px;z-index:99;display:flex;flex-direction:column;gap:10px}
.float-btn{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;box-shadow:0 2px 12px rgba(0,0,0,0.15);cursor:pointer;position:relative;border:none}
.float-phone{background:var(--primary)}
.float-inquiry{background:var(--gold)}
.float-label{position:absolute;right:60px;background:var(--text);color:#fff;padding:6px 14px;border-radius:6px;font-size:0.8rem;white-space:nowrap;opacity:0;transition:opacity 0.3s;pointer-events:none}
.float-btn:hover .float-label{opacity:1}

/* ===== 通用页面内容 ===== */
.page-content{padding:40px 0 80px;line-height:1.8;color:var(--text-dim)}
.page-content h2,.page-content h3{color:var(--text);margin:24px 0 12px}
.page-content p{margin-bottom:16px}

/* ===== CTA通用 ===== */
.densply-cta{text-align:center;padding:60px 0;background:var(--primary-light);margin:40px 0}
.cta-btn{display:inline-block;padding:12px 32px;border-radius:100px;text-decoration:none;font-weight:600;font-size:0.95rem}
.cta-primary{background:var(--primary);color:#fff}

.hidden-fields-container{display:none}

@media(max-width:1024px){.contact-grid{grid-template-columns:1fr}.timeline::before{left:20px}.timeline-item,.timeline-item:nth-child(even){padding-left:50px;padding-right:0;justify-content:flex-start}}
@media(max-width:640px){.contact-info-panel,.contact-form-panel{padding:20px}}

/* ===== About子页面 ===== */
.about-section{padding:40px 0 60px}
.page-main{padding:20px 0 60px}

/* ===== 首页Section补充 ===== */
.business-section{padding:60px 0}
.products-section{padding:60px 0}
.cases-section{padding:60px 0}
.card-img-placeholder{font-size:4rem;opacity:0.15;display:flex;align-items:center;justify-content:center;height:100%}

/* ===== page-title补充 ===== */
.page-title{font-size:2.2rem;font-weight:800;color:var(--text);letter-spacing:-0.02em;margin-bottom:8px}