/* =======================================================================
   iChina Arena · Global Stylesheet
   HLZX AI 产品矩阵门户
   ======================================================================= */

:root{
  --brand: #2D1B4E;
  --accent: #6B4EE6;
  --accent-2: #FF6B35;
  --gold: #FFB547;
  --bg-primary: #0A0D14;
  --bg-secondary: #121826;
  --bg-card: #1A2235;
  --text-primary: #F5F7FA;
  --text-secondary: #A8B2C7;
  --text-muted: #6B7280;
  --border-color: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.15);
}

body.light-mode{
  --bg-primary: #F8F9FC;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --text-primary: #1A2235;
  --text-secondary: #4A5568;
  --text-muted: #8892A5;
  --border-color: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.12);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.65;-webkit-font-smoothing:antialiased;transition:background-color .3s,color .3s}

/* =======================================================================
   Navigation
   ======================================================================= */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1.1rem 2.5rem;background:color-mix(in srgb,var(--bg-primary) 85%,transparent);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--border-color);transition:background .5s,border .5s}
.navbar-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:2rem}
.logo{display:flex;align-items:center;gap:.7rem;cursor:pointer;text-decoration:none;color:var(--text-primary);font-weight:700;font-size:1.1rem}
.logo-icon{width:18px;height:18px;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-radius:5px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.6rem;color:#fff;box-shadow:0 2px 8px rgba(107,78,230,0.3)}
.logo-icon-img{width:50px;height:auto;object-fit:contain}
.logo-text span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:.3rem;list-style:none;flex-wrap:wrap}
.nav-links a{color:var(--text-secondary);text-decoration:none;font-size:.9rem;font-weight:500;padding:.6rem 1rem;border-radius:8px;transition:color .2s,background .2s;white-space:nowrap}
.nav-links a:hover{color:var(--text-primary);background:var(--bg-card)}
.nav-links a.active{color:var(--accent);background:rgba(107,78,230,0.1)}
.nav-links a.nav-cta{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:600;padding:.6rem 1.2rem}
.nav-links a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(107,78,230,0.3)}
.nav-dropdown{position:relative}
.nav-dropdown>a::after{content:' \25BE';font-size:.7em;opacity:.6;margin-left:.2em}
.nav-dropdown-menu{position:absolute;top:100%;left:0;min-width:200px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 12px 32px rgba(0,0,0,.15);padding:.5rem;list-style:none;margin:0;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s,transform .2s,visibility .2s;z-index:1100}
.nav-dropdown:hover>.nav-dropdown-menu,.nav-dropdown:focus-within>.nav-dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-dropdown-menu li{list-style:none}
.nav-dropdown-menu a{display:block;padding:.6rem .9rem;color:var(--text-secondary);text-decoration:none;font-size:.875rem;border-radius:8px;transition:background .15s,color .15s;white-space:nowrap}
.nav-dropdown-menu a:hover{color:var(--text-primary);background:var(--bg-card)}

@media (max-width:1100px){
  .navbar{padding:1rem 1.5rem}
  .nav-links{gap:0}
  .nav-links li:nth-child(n+5){display:none}
  .nav-links a{padding:.5rem .7rem;font-size:.85rem}
}
@media (max-width:720px){
  .navbar-inner{flex-wrap:wrap;gap:1rem;justify-content:center}
  .nav-links{width:100%;justify-content:center;flex-wrap:wrap}
  .nav-links li:nth-child(n+4){display:none}
}

/* =======================================================================
   Hero v2 - 新版主视觉区
   ======================================================================= */
.hero-v2{position:relative;padding:10rem 2rem 7rem;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(107,78,230,0.15),transparent 60%),var(--bg-primary);overflow:hidden;text-align:center}
.hero-bg-grid{position:absolute;inset:0;background-image:linear-gradient(var(--border-color) 1px,transparent 1px),linear-gradient(90deg,var(--border-color) 1px,transparent 1px);background-size:64px 64px;opacity:.4;pointer-events:none;mask-image:radial-gradient(ellipse at 50% 30%,black 0%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse at 50% 30%,black 0%,transparent 80%)}
.hero-v2-content{position:relative;z-index:2;max-width:900px;margin:0 auto}
.hero-v2-label{display:inline-block;padding:.45rem 1.2rem;background:rgba(107,78,230,0.1);border:1px solid rgba(107,78,230,0.3);border-radius:100px;font-size:.8rem;color:var(--accent);font-weight:600;letter-spacing:.5px;margin-bottom:2rem;animation:fadeUp .9s ease-out both}
.hero-v2-title{font-size:clamp(2.2rem,5vw,4.2rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:1.5rem;animation:fadeUp 1.1s .1s ease-out both}
.hero-v2-title .accent{background:linear-gradient(135deg,var(--accent),var(--accent-2),var(--gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.hero-v2-subtitle{font-size:clamp(1rem,1.5vw,1.25rem);color:var(--text-secondary);max-width:680px;margin:0 auto 2.5rem;line-height:1.7;animation:fadeUp 1.3s .2s ease-out both}
.hero-v2-ctas{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;animation:fadeUp 1.5s .3s ease-out both}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* =======================================================================
   Product Hero - 三大产品卡片
   ======================================================================= */
.products-hero{padding:3rem 2rem 7rem;background:var(--bg-primary)}
.products-hero-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}

.product-hero-card{position:relative;padding:2.5rem 2rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:20px;transition:all .4s ease;overflow:hidden;display:flex;flex-direction:column}
.product-hero-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-2));opacity:.8}
.product-geo::before{background:linear-gradient(90deg,#667eea,#764ba2)}
.product-brain::before{background:linear-gradient(90deg,#f093fb,#f5576c)}
.product-mulan::before{background:linear-gradient(90deg,#ffecd2,#fcb69f)}
.product-hero-card:hover{transform:translateY(-8px);border-color:var(--border-strong);box-shadow:0 30px 80px rgba(0,0,0,0.25)}

.product-hero-tag{display:inline-block;padding:.3rem .8rem;background:rgba(107,78,230,0.1);border:1px solid rgba(107,78,230,0.2);color:var(--accent);border-radius:100px;font-size:.75rem;font-weight:600;letter-spacing:.5px;margin-bottom:1.2rem;align-self:flex-start}
.product-brain .product-hero-tag{background:rgba(245,87,108,0.1);border-color:rgba(245,87,108,0.2);color:#f5576c}
.product-mulan .product-hero-tag{background:rgba(252,182,159,0.15);border-color:rgba(252,182,159,0.3);color:#e8985a}
.product-hero-title{font-size:1.8rem;font-weight:800;margin-bottom:1rem;line-height:1.2}
.product-hero-desc{font-size:.98rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1.8rem;flex:1}
.product-hero-features{display:flex;flex-direction:column;gap:.7rem;margin-bottom:2rem}
.ph-feat{display:flex;align-items:center;gap:.6rem;font-size:.88rem;color:var(--text-secondary);padding:.5rem .8rem;background:var(--bg-primary);border-radius:8px}
.ph-feat-icon{font-size:1rem}
.product-hero-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.5rem;background:var(--accent);color:#fff;text-decoration:none;border-radius:10px;font-size:.9rem;font-weight:600;transition:all .25s;align-self:flex-start}
.product-hero-btn:hover{background:var(--accent-2);transform:translateX(4px)}
.btn-arrow{transition:transform .2s}
.product-hero-btn:hover .btn-arrow{transform:translateX(3px)}

/* Product sub-page hero */
.product-hero{position:relative;padding:10rem 2rem 7rem;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(107,78,230,0.15),transparent 60%),var(--bg-primary);overflow:hidden;text-align:center}
.product-hero-geo{background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(102,126,234,0.18),transparent 60%),var(--bg-primary)}
.product-hero-brain{background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(245,87,108,0.15),transparent 60%),var(--bg-primary)}
.product-hero-mulan{background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(252,182,159,0.15),transparent 60%),var(--bg-primary)}
.product-hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto}
.product-hero-name{font-size:clamp(2.5rem,5vw,4rem);font-weight:800;margin:.5rem 0 1rem;line-height:1.1;letter-spacing:-.02em}
.product-hero-slogan{font-size:clamp(1.3rem,2.5vw,2rem);font-weight:700;margin-bottom:1.5rem;color:var(--text-primary)}
.product-hero-slogan .accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

@media (max-width:1100px){
  .products-hero-inner{grid-template-columns:1fr;gap:1rem}
}

/* =======================================================================
   Buttons
   ======================================================================= */
.btn-primary,.btn-secondary{padding:.9rem 1.8rem;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:all .25s ease;border:1px solid transparent;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 24px rgba(107,78,230,0.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(107,78,230,0.35)}
.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}

/* =======================================================================
   Sections
   ======================================================================= */
section{position:relative;padding:7rem 2rem;transition:background .5s}
.bg-dark{background:var(--bg-primary)}
.bg-light{background:var(--bg-secondary)}
.section-head{max-width:900px;margin:0 auto 4.5rem;text-align:center}
.section-eyebrow{display:inline-block;padding:.4rem 1rem;background:rgba(107,78,230,0.1);border:1px solid rgba(107,78,230,0.3);border-radius:100px;font-size:.78rem;color:var(--accent);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:1.3rem}
.section-title{font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:800;line-height:1.2;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:1rem}
.section-title em{font-style:normal;color:var(--accent)}
.section-desc{font-size:1.08rem;color:var(--text-secondary);max-width:620px;margin:0 auto;line-height:1.7}
.section-cta{text-align:center;margin-top:3rem}

/* =======================================================================
   Pain / Why cards grid  (旧版保留)
   ======================================================================= */
.pain-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.pain-card{padding:2rem 1.8rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease}
.pain-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,0.15)}
.pain-icon{width:48px;height:48px;background:linear-gradient(135deg,rgba(107,78,230,0.1),rgba(255,181,71,0.1));border:1px solid var(--border-strong);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700;color:var(--accent);margin-bottom:1.3rem}
.pain-card h4{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.pain-card p{color:var(--text-secondary);font-size:.92rem;line-height:1.7}

.why-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.why-card{padding:2.2rem 2rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease}
.why-card:hover{border-color:var(--accent);box-shadow:0 20px 60px rgba(0,0,0,0.12)}
.why-num{display:inline-block;font-size:.75rem;font-weight:700;color:var(--accent);background:rgba(107,78,230,0.1);padding:.3rem .7rem;border-radius:8px;letter-spacing:1px;margin-bottom:1rem}
.why-card h4{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.why-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7}

@media (max-width:1100px){
  .pain-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Process Flow
   ======================================================================= */
.process-flow{max-width:1280px;margin:0 auto;display:flex;justify-content:center;align-items:stretch;gap:1rem;flex-wrap:wrap}
.process-step{flex:1;min-width:200px;padding:2rem 1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;text-align:center;transition:all .3s ease;position:relative}
.process-step:hover{border-color:var(--accent);box-shadow:0 20px 60px rgba(0,0,0,0.12)}
.process-circle{width:48px;height:48px;margin:0 auto 1.2rem;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:800;color:#fff;box-shadow:0 8px 24px rgba(107,78,230,0.3)}
.process-step h4{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.process-step p{font-size:.88rem;color:var(--text-secondary);line-height:1.6}

/* =======================================================================
   Capabilities grid v2 （产品功能卡片）
   ======================================================================= */
.cap-grid-v2{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.cap-card-v2{padding:2rem 1.8rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease;text-align:left}
.cap-card-v2:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,0.12)}
.cap-num-v2{display:inline-block;padding:.3rem .7rem;background:rgba(107,78,230,0.1);color:var(--accent);border-radius:8px;font-size:.75rem;font-weight:700;letter-spacing:1px;margin-bottom:1rem}
.cap-card-v2 h4{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.cap-card-v2 p{font-size:.92rem;color:var(--text-secondary);line-height:1.7}

@media (max-width:1100px){
  .cap-grid-v2{grid-template-columns:repeat(2,1fr);gap:.8rem}
}
@media (max-width:720px){
  .cap-grid-v2{grid-template-columns:1fr}
}

/* =======================================================================
   Mode grid (决策模式)
   ======================================================================= */
.mode-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.mode-card{padding:2.5rem 2rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease}
.mode-card:hover{border-color:var(--accent);box-shadow:0 20px 60px rgba(0,0,0,0.15);transform:translateY(-3px)}
.mode-icon{font-size:2rem;margin-bottom:1.2rem;color:var(--accent)}
.mode-card h4{font-size:1.3rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.mode-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7}

@media (max-width:720px){
  .mode-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Problem grid (痛点卡片)
   ======================================================================= */
.problem-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.problem-card{padding:2rem 1.8rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease}
.problem-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,0.15)}
.problem-icon{font-size:1.8rem;margin-bottom:1rem;color:var(--accent)}
.problem-card h4{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.problem-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7}

@media (max-width:720px){
  .problem-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Use case grid
   ======================================================================= */
.usecase-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.usecase-card{padding:2rem 1.8rem;background:linear-gradient(145deg,var(--bg-card),var(--bg-primary));border:1px solid var(--border-color);border-radius:16px;transition:all .3s ease}
.usecase-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,0.12)}
.usecase-card h4{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.usecase-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7}

@media (max-width:720px){
  .usecase-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Agent categories grid
   ======================================================================= */
.agent-cat-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.agent-cat-card{padding:2.5rem 2rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:20px;text-decoration:none;color:inherit;transition:all .3s ease;display:flex;flex-direction:column;align-items:flex-start}
.agent-cat-card:hover{border-color:var(--accent);transform:translateY(-5px);box-shadow:0 30px 80px rgba(0,0,0,0.2)}
.agent-cat-icon{width:56px;height:56px;margin-bottom:1.2rem;background:linear-gradient(135deg,rgba(107,78,230,0.15),rgba(255,107,53,0.15));border:1px solid var(--border-strong);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.agent-cat-card h3{font-size:1.4rem;font-weight:800;color:var(--text-primary);margin-bottom:.8rem}
.agent-cat-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1.5rem;flex:1}
.agent-cat-count{display:inline-flex;align-items:center;gap:.3rem;padding:.5rem 1rem;background:rgba(107,78,230,0.1);color:var(--accent);border-radius:10px;font-size:.85rem;font-weight:600}

@media (max-width:720px){
  .agent-cat-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Agent grid v2 (6 col)
   ======================================================================= */
.agent-grid-v2{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.agent-card-v2{padding:1.8rem 1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:14px;transition:all .25s}
.agent-card-v2:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 20px 60px rgba(0,0,0,0.1)}
.agent-ic{font-size:1.6rem;margin-bottom:.9rem;color:var(--accent)}
.agent-card-v2 h4{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin-bottom:.6rem}
.agent-card-v2 p{font-size:.88rem;color:var(--text-secondary);line-height:1.6}

@media (max-width:1100px){
  .agent-grid-v2{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .agent-grid-v2{grid-template-columns:1fr}
}

/* =======================================================================
   Office grid (办公地点)
   ======================================================================= */
.office-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.office-card{padding:1.5rem 1.3rem;background:linear-gradient(145deg,var(--bg-card),var(--bg-secondary));border:1px solid var(--border-color);border-radius:14px;text-align:center;transition:all .3s}
.office-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,0.1)}
.office-tag{display:inline-block;padding:.3rem .7rem;background:var(--accent);color:#fff;border-radius:100px;font-size:.72rem;font-weight:700;letter-spacing:1px;margin-bottom:.8rem}
.office-card h4{font-size:1.1rem;font-weight:800;color:var(--text-primary);margin-bottom:.5rem}
.office-card p{font-size:.88rem;color:var(--text-secondary);margin:0;line-height:1.6}

@media (max-width:1100px){
  .office-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .office-grid{grid-template-columns:1fr}
}

/* =======================================================================
   Solutions details grid
   ======================================================================= */
.sol-details{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.sol-detail-card{padding:2.5rem 2rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s}
.sol-detail-card:hover{border-color:var(--accent);box-shadow:0 20px 60px rgba(0,0,0,0.12);transform:translateY(-3px)}
.sol-detail-card h3{font-size:1.25rem;font-weight:800;color:var(--accent);margin-bottom:1.2rem;padding-bottom:.8rem;border-bottom:1px solid var(--border-color)}
.sol-detail-card ul{list-style:none;padding:0;margin:0}
.sol-detail-card li{padding:.6rem 0;color:var(--text-secondary);font-size:.95rem;line-height:1.5;border-bottom:1px dashed var(--border-color)}
.sol-detail-card li:last-child{border-bottom:none}

@media (max-width:1100px){
  .sol-details{grid-template-columns:1fr;gap:1rem}
}

/* =======================================================================
   Partners grid (4 卡片)
   ======================================================================= */
.partner-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.partner-card{padding:2rem 1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;text-align:center;transition:all .3s}
.partner-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,0.1)}
.partner-icon{font-size:2.2rem;margin-bottom:1rem;color:var(--accent)}
.partner-card h4{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:.8rem}
.partner-card p{font-size:.9rem;color:var(--text-secondary);line-height:1.6}

@media (max-width:1100px){
  .partner-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .partner-grid{grid-template-columns:1fr}
}

/* =======================================================================
   About intro cards (4列)
   ======================================================================= */
.about-intro{max-width:1200px;margin:0 auto 3rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.about-card{padding:1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;text-align:center;transition:all .3s}
.about-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 10px 30px rgba(107,78,230,0.15)}
.about-card.highlight{background:linear-gradient(145deg,rgba(107,78,230,0.08),var(--bg-card));border-color:var(--accent)}
.about-card-icon{font-size:1.8rem;margin-bottom:.8rem}
.about-card h4{font-size:1rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}
.about-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.6;margin:0}

@media (max-width:1100px){
  .about-intro{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .about-intro{grid-template-columns:1fr}
}

/* =======================================================================
   Business matrix grid (3列 x N行)
   ======================================================================= */
.business-matrix{max-width:1200px;margin:0 auto 3rem}
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.biz-card{padding:1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;transition:all .3s}
.biz-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 20px 60px rgba(0,0,0,0.1)}
.biz-header{display:flex;align-items:center;gap:.8rem;margin-bottom:1rem}
.biz-num{width:38px;height:38px;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:.85rem;flex-shrink:0}
.biz-header h4{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin:0}
.biz-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.6;margin:0 0 .8rem}
.biz-tag{display:inline-block;padding:.3rem .8rem;background:rgba(107,78,230,0.1);color:var(--accent);border-radius:100px;font-size:.78rem;font-weight:600}

@media (max-width:1100px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .biz-grid{grid-template-columns:1fr}
}

/* =======================================================================
   CTA Section
   ======================================================================= */
.cta-section{padding:7rem 2rem;text-align:center;background:radial-gradient(ellipse 60% 50% at 50% 50%,rgba(107,78,230,0.1),transparent 70%),var(--bg-primary);transition:background .5s;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}
.cta-section h2{font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--text-primary);line-height:1.2;letter-spacing:-.02em;margin-bottom:1.2rem}
.cta-section h2 .accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.cta-section p{font-size:1.1rem;color:var(--text-secondary);max-width:640px;margin:0 auto 2.5rem;line-height:1.7}

/* =======================================================================
   Safety banner
   ======================================================================= */
.safety-banner{background:var(--bg-secondary);padding:2rem 2rem;border-top:1px solid var(--border-color)}
.safety-inner{max-width:1000px;margin:0 auto;text-align:center;color:var(--text-secondary);font-size:.9rem;line-height:1.7}

/* =======================================================================
   Footer
   ======================================================================= */
.footer{background:var(--bg-primary);border-top:1px solid var(--border-color);padding:4rem 2rem 2rem;transition:background .5s}
.footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem}
.footer-brand p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;margin-top:1rem;max-width:360px}
.footer-col h5{font-size:.9rem;color:var(--text-primary);font-weight:700;margin-bottom:1.2rem;letter-spacing:.3px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:.6rem}
.footer-col a{color:var(--text-secondary);text-decoration:none;font-size:.88rem;transition:color .25s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{max-width:1280px;margin:3rem auto 0;padding-top:2rem;border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);font-size:.82rem}

@media (max-width:1100px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:2rem}
}
@media (max-width:720px){
  .footer-inner{grid-template-columns:1fr}
}

/* =======================================================================
   Section general padding mobile
   ======================================================================= */
@media (max-width:720px){
  section{padding:4.5rem 1.2rem}
  .hero-v2{padding:7rem 1rem 4rem}
  .products-hero{padding:2rem 1rem 5rem}
  .cta-section{padding:5rem 1rem}
  .hero-v2-ctas{flex-direction:column;align-items:stretch}
  .hero-v2-ctas .btn-primary,.hero-v2-ctas .btn-secondary{width:100%}
  .section-head{margin-bottom:3rem}
}

/* products/qualifications 兼容样式 */
.hero{position:relative;padding:10rem 2rem 7rem;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(107,78,230,0.15),transparent 60%),var(--bg-primary);overflow:hidden;text-align:center}
.hero-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4;pointer-events:none}
.hero-orb.o1{width:500px;height:500px;background:rgba(107,78,230,.35);top:0;left:10%}
.hero-orb.o2{width:400px;height:400px;background:rgba(255,107,53,.25);top:10%;right:5%}
.hero-orb.o3{width:300px;height:300px;background:rgba(247,147,30,.2);bottom:10%;left:30%}
.hero-content{position:relative;z-index:2;max-width:900px;margin:0 auto}
.hero-label{display:inline-block;padding:.45rem 1.2rem;background:rgba(107,78,230,0.1);border:1px solid rgba(107,78,230,0.3);border-radius:100px;font-size:.8rem;color:var(--accent);font-weight:600;letter-spacing:.5px;margin-bottom:1.5rem}
.hero h1{font-size:clamp(2.2rem,5vw,4.2rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:1.5rem}
.hero-subtitle{font-size:clamp(1rem,1.5vw,1.25rem);color:var(--text-secondary);max-width:680px;margin:0 auto 2.5rem;line-height:1.7}
.hero-ctas{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.stats-band{padding:3rem 2rem;background:var(--bg-card);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}
.stats-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr);gap:2rem}
.stats-inner .stat-item{text-align:center}
.stats-inner .stat-num{font-size:2.2rem;font-weight:800;color:var(--accent);line-height:1.1}
.stats-inner .stat-num sup{font-size:1rem;color:var(--accent-2);margin-left:2px}
.stats-inner .stat-label{font-size:.95rem;font-weight:600;color:var(--text-primary);margin-top:.4rem}
.stats-inner .stat-sub{font-size:.78rem;color:var(--text-secondary);margin-top:.2rem}
@media (max-width:900px){.stats-inner{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.stats-inner{grid-template-columns:1fr}}
.product-block{padding:3rem 2rem;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:18px;margin:0 2rem 3rem;max-width:1200px;margin-left:auto;margin-right:auto}
@media (max-width:768px){.product-block{margin:0 1rem 2rem;padding:2rem 1rem}}
.product-header{display:grid;grid-template-columns:auto 1fr;gap:2rem;align-items:start;margin-bottom:2.5rem;padding-bottom:2rem;border-bottom:1px solid var(--border-color)}
@media (max-width:768px){.product-header{grid-template-columns:1fr;gap:1rem}}
.product-badge{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;padding:.5rem 1rem;border-radius:8px;font-weight:700;font-size:.85rem;height:fit-content}
.product-title-block h3{font-size:1.5rem;font-weight:700;margin-bottom:.5rem;color:var(--text-primary)}
.product-title-block>p{color:var(--text-secondary);margin-bottom:1rem}
.product-stats{display:flex;gap:1.5rem;flex-wrap:wrap;margin-top:1rem}
.pstat{display:flex;flex-direction:column;align-items:flex-start}
.pstat-num{font-size:1.5rem;font-weight:800;color:var(--accent);line-height:1}
.pstat-label{font-size:.75rem;color:var(--text-secondary);margin-top:.2rem}
.product-cap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;margin-top:1.5rem}
.product-cap{background:var(--bg-card);padding:1.2rem;border-radius:12px;border:1px solid var(--border-color)}
.product-cap h4{font-size:.95rem;font-weight:700;margin:.5rem 0;color:var(--text-primary)}
.product-cap p{font-size:.82rem;color:var(--text-secondary);line-height:1.5}
.pc-icon{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:rgba(107,78,230,0.1);color:var(--accent);border-radius:8px;font-weight:700;font-size:.85rem}
.honor-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;margin-top:1.5rem}
.honor-card{background:var(--bg-card);padding:1.2rem;border-radius:12px;border:1px solid var(--border-color)}
.honor-card h4{font-size:.95rem;font-weight:700;margin-bottom:.4rem;color:var(--text-primary)}
.honor-card p{font-size:.82rem;color:var(--text-secondary);line-height:1.5}
.copyright-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.6rem;margin-top:1.5rem}
.copyright-tag{background:var(--bg-card);padding:.6rem 1rem;border-radius:8px;border:1px solid var(--border-color);font-size:.82rem;color:var(--text-secondary);text-align:center}
.copyright-tag:hover{border-color:var(--accent);color:var(--text-primary);transition:all .2s}