/* ===== Design System ===== */
:root{
  --brand:#0052D9;--green:#07C160;--orange:#FF6B35;--blue:#0052D9;
  --dark:#0a0f1e;--dark2:#131b34;--dark3:#1a2240;--border:#e5e7eb;--purple:#7c3aed;
  --title-color:#233863;--subtitle-color:#6D7B96;--body-color:#4A4A4A;
  --bg-white:#ffffff;--bg-alt:#F5F7FA;
  --gradient-tencent:linear-gradient(135deg,#0052D9 0%,#07C160 100%);
  --gradient-blue:linear-gradient(135deg,#0052D9 0%,#448AFF 100%);
  --gradient-btn:linear-gradient(135deg,#0052D9 0%,#07C160 100%);
  --shadow-sm:0 1px 2px rgba(35,56,99,.04),0 1px 3px rgba(35,56,99,.06);
  --shadow-md:0 4px 8px rgba(35,56,99,.04),0 8px 24px rgba(35,56,99,.06);
  --shadow-lg:0 12px 24px rgba(35,56,99,.06),0 24px 48px rgba(35,56,99,.08);
  --shadow-xl:0 24px 48px rgba(35,56,99,.08),0 48px 96px rgba(35,56,99,.1);
  --radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--radius-2xl:32px;--radius-full:9999px;
  --font-sans:'PingFang SC','Microsoft YaHei',-apple-system,BlinkMacSystemFont,sans-serif;
  --blue:#0052D9;--green:#07C160;--text:#1a1a2e;--text2:#4a5568;--muted:#9ca3af;--border:#e5e7eb;
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--body-color);background:var(--bg-white);overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ===== NAV ===== */
.nav-wrap{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,.05);transition:box-shadow .3s}
.nav-wrap.scrolled{box-shadow:0 1px 16px rgba(0,0,0,.07)}
.nav{max-width:1280px;margin:0 auto;height:68px;display:flex;align-items:center;padding:0 40px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer;margin-right:48px;flex-shrink:0}
.logo-icon{width:40px;height:40px;border-radius:10px;object-fit:cover;flex-shrink:0;box-shadow:0 4px 12px rgba(0,82,217,.2)}
.logo-text{font-size:20px;font-weight:700;color:var(--text);letter-spacing:.5px}
.logo-text span{color:var(--blue)}
.nav-items{display:flex;align-items:center;gap:2px;flex:1}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:4px;padding:8px 16px;font-size:15px;color:var(--text2);border-radius:8px;cursor:pointer;transition:all .2s;font-weight:500;white-space:nowrap}
.nav-link:hover{color:var(--blue);background:rgba(0,82,217,.06)}
.nav-link.active{color:var(--blue);font-weight:600}
.nav-link.active::after{content:'';position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);width:24px;height:3px;background:linear-gradient(90deg,var(--blue),var(--green));border-radius:2px}
.nav-arrow{font-size:9px;transition:transform .25s;margin-top:1px;opacity:.6}
.nav-item:hover .nav-arrow{transform:rotate(180deg);opacity:1}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(-12px);margin-top:10px;background:#fff;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.12),0 8px 20px rgba(0,0,0,.06);border:1px solid rgba(0,0,0,.04);width:620px;padding:0;opacity:0;visibility:hidden;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;overflow:hidden}
.dropdown::before{content:'';position:absolute;top:-12px;left:0;right:0;height:12px}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown-left{width:50%;padding:28px;border-right:1px solid #f0f2f5}
.dropdown-header{font-size:13px;color:var(--muted);margin-bottom:20px;font-weight:500;letter-spacing:.5px}
.product-list{display:flex;flex-direction:column;gap:18px}
.product-item{display:flex;align-items:flex-start;gap:14px;color:var(--text);padding:4px 0;border-radius:8px;transition:all .2s}
.product-item:hover .product-title{color:var(--blue)}
.product-item:hover .product-icon{background:#eff6ff}
.product-icon{width:40px;height:40px;border-radius:10px;background:#f8fafc;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .2s}
.product-icon svg{width:22px;height:22px;stroke:var(--blue);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.product-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:4px;transition:color .2s}
.product-subtitle{font-size:13px;color:var(--muted);line-height:1.5}
.dropdown-right{width:50%;padding:28px;background:#f8fafc}
.video-section{margin-bottom:26px}
.video-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px}
.video-thumb{width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,#0052D9,#07C160);border-radius:12px;display:flex;align-items:center;justify-content:center;position:relative;cursor:pointer;overflow:hidden;transition:transform .25s,box-shadow .25s}
.video-thumb:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,82,217,.3)}
.video-thumb::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.2),transparent 60%)}
.video-thumb::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:24px 24px}
.play-btn{width:48px;height:48px;background:rgba(255,255,255,.95);border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;box-shadow:0 4px 16px rgba(0,0,0,.15);transition:transform .2s}
.video-thumb:hover .play-btn{transform:scale(1.08)}
.play-btn svg{width:16px;height:16px;fill:#0052D9;margin-left:2px}
.video-badge{position:absolute;top:10px;right:12px;background:rgba(0,0,0,.35);color:#fff;font-size:11px;padding:3px 8px;border-radius:4px;z-index:2}
.video-label{position:absolute;bottom:10px;left:12px;color:#fff;font-size:12px;z-index:2;text-shadow:0 1px 2px rgba(0,0,0,.2)}
.article-link{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;transition:background .2s}
.article-link:hover{background:#fff}
.article-icon{width:40px;height:40px;background:#eff6ff;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.article-icon svg{width:20px;height:20px;stroke:var(--blue);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.article-content{flex:1;min-width:0}
.article-title{font-size:14px;color:var(--text);font-weight:500;line-height:1.4;margin-bottom:3px}
.article-meta{font-size:12px;color:var(--muted)}
.nav-right{display:flex;align-items:center;flex-shrink:0}
.nav-cta{padding:10px 26px;background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;border:none;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;box-shadow:0 4px 14px rgba(0,82,217,0.28);display:inline-block}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,82,217,0.38)}
.nav-phone{display:flex;align-items:center;gap:6px;margin-right:16px;font-size:15px;font-weight:700;color:var(--text);transition:color .2s;white-space:nowrap;cursor:pointer}
.nav-phone svg{width:18px;height:18px;stroke:var(--blue);stroke-width:2;fill:none}
.nav-phone:hover{color:var(--blue)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.mobile-toggle span{width:22px;height:2px;background:#333;border-radius:2px;transition:all .3s}

/* ===== Section Common ===== */
.section .container{max-width:1260px;margin:0 auto;padding:0 24px}
.section{padding:88px 0;position:relative}
.section-header{text-align:center;max-width:850px;margin:0 auto 64px}
.section-tag{display:inline-block;font-size:14px;color:var(--blue);font-weight:600;margin-bottom:12px;letter-spacing:1px}
.section-title{font-size:40px;font-weight:600;line-height:1.3;color:var(--title-color);margin-bottom:20px}
.section-title em{font-style:normal;background:var(--gradient-tencent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-desc{font-size:18px;font-weight:400;color:var(--subtitle-color);line-height:1.6}

/* ===== BANNER (left-right split, dhr style) ===== */
.banner{position:relative;padding:120px 0 80px;overflow:hidden;background:linear-gradient(135deg,#e3f2fd 0%,#e8f5e9 40%,#f0f7ff 100%)}
.banner::before{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:900px;height:300px;background:radial-gradient(ellipse at center bottom,rgba(0,82,217,.1),transparent 70%);pointer-events:none}
.banner::after{content:'';position:absolute;top:8%;right:5%;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(7,193,96,.08),transparent 70%);pointer-events:none}
.banner-container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.banner-split{display:flex;align-items:center;gap:48px}
.banner-left{flex:1;max-width:520px}
.banner-right{flex:1;position:relative;min-height:560px}

/* Left side */
.banner-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 18px;background:rgba(0,82,217,.08);color:var(--blue);font-size:13px;font-weight:600;border-radius:var(--radius-full);margin-bottom:20px}
.banner-badge-dot{width:8px;height:8px;border-radius:50%;background:var(--blue);animation:pulseGlow 2s ease-in-out infinite}
.banner-title{font-size:42px;font-weight:700;line-height:1.3;color:var(--title-color);margin-bottom:16px;text-align:left}
.banner-title em{font-style:normal;background:var(--gradient-tencent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.banner-subtitle{font-size:16px;color:var(--subtitle-color);line-height:1.7;margin-bottom:24px}
.banner-features-list{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.banner-feature-item{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--body-color)}
.banner-feature-check{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,rgba(0,82,217,.12),rgba(7,193,96,.12));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.banner-feature-check svg{width:14px;height:14px;stroke:var(--blue);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}
.banner-cta{display:flex;gap:14px;flex-wrap:wrap}
.banner-btn-primary{padding:14px 32px;background:var(--gradient-tencent);color:#fff;font-size:15px;font-weight:600;border-radius:12px;border:none;cursor:pointer;transition:all .25s;box-shadow:0 4px 20px rgba(0,82,217,.25);display:inline-flex;align-items:center;gap:8px}
.banner-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,82,217,.35)}
.banner-btn-outline{padding:14px 32px;background:#fff;color:var(--title-color);font-size:15px;font-weight:600;border-radius:12px;border:1.5px solid #E0E4ED;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:8px}
.banner-btn-outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,82,217,.1)}

/* Right side - visual composition */
.banner-visual{position:relative;width:100%;max-width:520px;height:560px;margin:0 auto}

/* Central dashboard panel */
.bv-dashboard{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:340px;background:#fff;border-radius:20px;box-shadow:0 24px 64px rgba(0,82,217,.15),0 8px 24px rgba(0,0,0,.06);overflow:hidden;z-index:4;border:1px solid rgba(0,82,217,.08)}
.bv-dash-header{background:linear-gradient(135deg,#0052D9,#07C160);padding:14px 18px;display:flex;align-items:center;gap:10px}
.bv-dash-header-icon{width:30px;height:30px;background:rgba(255,255,255,.2);border-radius:8px;display:flex;align-items:center;justify-content:center}
.bv-dash-header-icon svg{width:18px;height:18px;stroke:#fff;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.bv-dash-header-text{flex:1}
.bv-dash-header-title{color:#fff;font-size:13px;font-weight:700}
.bv-dash-header-sub{color:rgba(255,255,255,.7);font-size:10px;margin-top:1px}
.bv-dash-live{display:flex;align-items:center;gap:4px}
.bv-dash-live-dot{width:7px;height:7px;border-radius:50%;background:#4ade80;animation:pulseGlow 1.5s ease-in-out infinite}
.bv-dash-live-text{color:#fff;font-size:9px;font-weight:600}
.bv-dash-body{padding:16px}
/* Stats row */
.bv-dash-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px}
.bv-dash-stat{background:#f5f8ff;border-radius:10px;padding:10px 12px}
.bv-dash-stat-label{font-size:9px;color:#9ca3af;font-weight:600}
.bv-dash-stat-value{font-size:18px;font-weight:800;margin-top:2px}
.bv-dash-stat-trend{font-size:9px;margin-top:2px;display:flex;align-items:center;gap:2px}
.bv-dash-stat-trend.up{color:#07C160}
.bv-dash-stat-trend.down{color:#ef4444}
/* Chart area */
.bv-dash-chart-title{font-size:10px;font-weight:700;color:#374151;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center}
.bv-dash-chart-title span{font-size:9px;color:#9ca3af;font-weight:500}
.bv-dash-chart{display:flex;align-items:flex-end;justify-content:space-between;gap:5px;height:70px;padding:0 2px}
.bv-dash-bar{flex:1;border-radius:4px 4px 0 0;min-height:8px;transition:all .3s}
.bv-dash-bar.blue{background:linear-gradient(180deg,#0052D9,rgba(0,82,217,.3))}
.bv-dash-bar.green{background:linear-gradient(180deg,#07C160,rgba(7,193,96,.3))}
/* Campaign list */
.bv-dash-campaigns{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.bv-dash-camp{display:flex;align-items:center;gap:8px}
.bv-dash-camp-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.bv-dash-camp-name{font-size:10px;color:#374151;font-weight:600;flex:1}
.bv-dash-camp-bar{flex:1.5;height:5px;background:#f0f0f0;border-radius:3px;overflow:hidden}
.bv-dash-camp-fill{height:100%;border-radius:3px;animation:campGrow 1s ease-out}
@keyframes campGrow{from{width:0}}
.bv-dash-camp-val{font-size:10px;font-weight:700;color:#374151;min-width:40px;text-align:right}

/* Floating feature badges */
.bv-badge{position:absolute;background:#fff;border-radius:14px;padding:12px 16px;box-shadow:0 8px 24px rgba(0,82,217,.1);border:1px solid rgba(0,82,217,.08);display:flex;align-items:center;gap:10px;z-index:5;transition:all .3s}
.bv-badge:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,82,217,.15)}
.bv-badge-1{top:10px;left:-30px;animation:floatBadge 3s ease-in-out infinite}
.bv-badge-2{top:60px;right:-30px;animation:floatBadge 3s ease-in-out infinite 1.5s}
.bv-badge-icon{width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.bv-badge-icon svg{width:18px;height:18px;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.bv-badge-text{font-size:12px;font-weight:700;color:var(--title-color)}
.bv-badge-sub{font-size:10px;color:var(--muted);margin-top:2px}
@keyframes floatBadge{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes pulseGlow{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}

/* Floating testimonial cards */
.bv-testimonial{position:absolute;background:#fff;border-radius:16px;padding:14px 16px;box-shadow:0 12px 32px rgba(0,82,217,.08);border:1px solid rgba(0,82,217,.06);z-index:5;max-width:200px;transition:all .3s}
.bv-testimonial:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 16px 40px rgba(0,82,217,.12)}
.bv-testimonial-1{bottom:0;left:-30px;animation:floatBadge 3.5s ease-in-out infinite .5s}
.bv-testimonial-2{bottom:40px;right:-30px;animation:floatBadge 3.5s ease-in-out infinite 2s}
.bv-testimonial-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.bv-testimonial-avatar{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0}
.bv-testimonial-name{font-size:11px;font-weight:700;color:var(--title-color)}
.bv-testimonial-company{font-size:9px;color:var(--muted)}
.bv-testimonial-text{font-size:11px;color:var(--body-color);line-height:1.5}
.bv-testimonial-stars{display:flex;gap:2px;margin-top:6px}
.bv-testimonial-stars svg{width:10px;height:10px;fill:#FFB800}

/* Dashed connecting lines */
.bv-line{position:absolute;z-index:2;opacity:.25}
.bv-line-1{top:20px;left:10px;width:60px;height:50px}
.bv-line-2{top:40px;right:10px;width:60px;height:50px}
.bv-line-3{bottom:40px;left:20px;width:50px;height:40px}
.bv-line-4{bottom:60px;right:20px;width:50px;height:40px}

/* Banner bottom 4 stat blocks (dhr style) */
.banner-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px}
.banner-stat{background:#fff;border-radius:16px;padding:24px 20px;box-shadow:0 4px 16px rgba(0,82,217,.06);border:1px solid rgba(0,82,217,.06);transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;cursor:default}
.banner-stat::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-tencent);transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.banner-stat::after{content:'';position:absolute;bottom:-40px;right:-40px;width:100px;height:100px;border-radius:50%;background:radial-gradient(circle,rgba(0,82,217,.06),transparent 70%);transition:all .35s ease}
.banner-stat:hover{transform:translateY(-8px);box-shadow:0 16px 40px rgba(0,82,217,.12);border-color:rgba(0,82,217,.15)}
.banner-stat:hover::before{transform:scaleX(1)}
.banner-stat:hover::after{transform:scale(1.5)}
.banner-stat-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;transition:transform .3s}
.banner-stat:hover .banner-stat-icon{transform:scale(1.1) rotate(-5deg)}
.banner-stat-icon svg{width:24px;height:24px;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.banner-stat-title{font-size:15px;font-weight:700;color:var(--title-color);margin-bottom:6px}
.banner-stat-desc{font-size:13px;color:var(--subtitle-color);line-height:1.5}

/* ===== ARCHITECTURE OVERVIEW ===== */
.section-architecture{background:var(--bg-white);position:relative;overflow:hidden}
.section-architecture::before{content:'';position:absolute;top:0;left:0;width:500px;height:500px;background:radial-gradient(circle,rgba(0,82,217,.05) 0%,transparent 70%);pointer-events:none}
.arch-visual{max-width:1000px;margin:0 auto}
.arch-center{display:flex;flex-direction:column;align-items:center;margin-bottom:40px}
.arch-center-emoji{width:80px;height:80px;background:var(--gradient-tencent);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:36px;box-shadow:0 12px 32px rgba(0,82,217,.25);margin-bottom:16px}
.arch-center-name{font-size:22px;font-weight:700;color:var(--title-color)}
.arch-center-desc{font-size:14px;color:var(--subtitle-color);margin-top:4px}
.arch-modules{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.arch-module{background:#fff;border:1px solid #EEF0F6;border-radius:var(--radius-xl);padding:28px 24px;transition:all .25s;position:relative;overflow:hidden}
.arch-module::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-tencent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.arch-module:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.arch-module:hover::before{transform:scaleX(1)}
.arch-module-emoji{font-size:32px;margin-bottom:12px}
.arch-module-title{font-size:16px;font-weight:600;color:var(--title-color);margin-bottom:12px}
.arch-module-tags{display:flex;flex-wrap:wrap;gap:6px}
.arch-tag{padding:4px 10px;background:rgba(0,82,217,.06);color:var(--blue);font-size:11px;font-weight:500;border-radius:6px;border:1px solid rgba(0,82,217,.1)}

/* ===== METHODOLOGY (dhr style: left tabs + right content+viz) ===== */
.section-method{background:linear-gradient(180deg,var(--bg-alt) 0%,var(--bg-white) 100%);position:relative;overflow:hidden}
.section-method::before{content:'';position:absolute;top:0;right:0;width:500px;height:500px;background:radial-gradient(circle,rgba(0,82,217,.04) 0%,transparent 70%);pointer-events:none}
.method-layout{display:grid;grid-template-columns:340px 1fr;gap:32px;max-width:1200px;margin:0 auto}
.method-tabs{display:flex;flex-direction:column;gap:10px}
.method-tab{display:flex;align-items:center;gap:14px;padding:18px 20px;background:#fff;border:1px solid #EEF0F6;border-radius:14px;cursor:pointer;transition:all .3s;position:relative;overflow:hidden}
.method-tab::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gradient-tencent);transform:scaleY(0);transition:transform .3s}
.method-tab:hover{border-color:rgba(0,82,217,.15);box-shadow:0 4px 16px rgba(0,82,217,.06)}
.method-tab.active{background:linear-gradient(135deg,rgba(0,82,217,.04),rgba(7,193,96,.04));border-color:rgba(0,82,217,.2);box-shadow:0 8px 24px rgba(0,82,217,.08)}
.method-tab.active::before{transform:scaleY(1)}
.method-tab-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:rgba(0,82,217,.06);transition:all .3s}
.method-tab.active .method-tab-icon{background:var(--gradient-tencent)}
.method-tab-icon svg{width:20px;height:20px;stroke:var(--blue);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:stroke .3s}
.method-tab.active .method-tab-icon svg{stroke:#fff}
.method-tab-info{flex:1;min-width:0}
.method-tab-title{font-size:15px;font-weight:700;color:var(--title-color);margin-bottom:2px;transition:color .3s}
.method-tab.active .method-tab-title{color:var(--blue)}
.method-tab-brief{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.method-panel{display:none}
.method-panel.active{display:block;animation:methodFade .4s ease}
@keyframes methodFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.method-content{background:#fff;border:1px solid #EEF0F6;border-radius:20px;padding:36px 32px;box-shadow:0 8px 32px rgba(0,82,217,.04);margin-bottom:20px}
.method-content-head{display:flex;align-items:center;gap:12px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid #f0f2f7}
.method-content-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--gradient-tencent);color:#fff;font-size:14px;font-weight:700}
.method-content-title{font-size:22px;font-weight:700;color:var(--title-color)}
.method-blocks{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.method-block-title{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;margin-bottom:14px;padding:6px 14px;border-radius:8px}
.method-block-pain .method-block-title{background:rgba(239,68,68,.08);color:var(--danger)}
.method-block-solution .method-block-title{background:rgba(0,82,217,.08);color:var(--blue)}
.method-block-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.method-block-list li{font-size:14px;color:var(--body-color);line-height:1.7;padding-left:22px;position:relative}
.method-block-pain .method-block-list li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--danger);opacity:.5}
.method-block-solution .method-block-list li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--blue)}
.method-viz{background:#fff;border:1px solid #EEF0F6;border-radius:20px;padding:28px 32px;box-shadow:0 8px 32px rgba(0,82,217,.04);display:flex;align-items:center;gap:32px}
.method-viz-svg{width:200px;height:160px;flex-shrink:0}
.method-viz-stats{flex:1;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.method-viz-stat{text-align:center;padding:16px 12px;background:linear-gradient(135deg,rgba(0,82,217,.03),rgba(7,193,96,.03));border-radius:12px;border:1px solid rgba(0,82,217,.06)}
.method-viz-stat-value{font-size:24px;font-weight:700;background:var(--gradient-tencent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.method-viz-stat-label{font-size:12px;color:var(--subtitle-color);margin-top:6px}

/* ===== PRODUCT ADVANTAGES ===== */
.section-advantages{background:linear-gradient(180deg,var(--bg-white) 0%,var(--bg-alt) 100%);position:relative;overflow:hidden}
.section-advantages::before{content:'';position:absolute;top:0;right:0;width:500px;height:500px;background:radial-gradient(circle,rgba(7,193,96,.06) 0%,transparent 70%);pointer-events:none}
.advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.advantage-card{background:#fff;border:1px solid #EEF0F6;border-radius:var(--radius-xl);padding:36px 28px;transition:all .25s;position:relative;overflow:hidden}
.advantage-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-tencent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.advantage-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:transparent}
.advantage-card:hover::before{transform:scaleX(1)}
.advantage-emoji{width:64px;height:64px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:20px;background:var(--bg-alt);transition:transform .25s}
.advantage-card:hover .advantage-emoji{transform:scale(1.1) rotate(-5deg)}
.advantage-card h3{font-size:18px;font-weight:600;color:var(--title-color);margin-bottom:12px}
.advantage-card p{font-size:14px;color:var(--body-color);line-height:1.7}

/* ===== PRODUCT FUNCTION ARCHITECTURE ===== */
.section-functions{background:var(--bg-white)}
.functions-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.function-module{background:#fff;border:1px solid #EEF0F6;border-radius:var(--radius-2xl);padding:36px 32px;transition:all .25s;position:relative;overflow:hidden}
.function-module:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(0,82,217,.15)}
.function-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--gradient-tencent);color:#fff;font-size:16px;font-weight:700;margin-bottom:16px}
.function-module h3{font-size:20px;font-weight:600;color:var(--title-color);margin-bottom:12px}
.function-module p{font-size:14px;color:var(--subtitle-color);line-height:1.7;margin-bottom:20px}
.function-tags{display:flex;flex-wrap:wrap;gap:8px}
.function-tag{padding:6px 14px;background:rgba(0,82,217,.06);color:var(--blue);font-size:13px;font-weight:600;border-radius:var(--radius-full);border:1px solid rgba(0,82,217,.1)}

/* ===== INDUSTRY SCENARIOS ===== */
.section-scenarios{background:linear-gradient(180deg,var(--bg-alt) 0%,var(--bg-white) 100%);position:relative;overflow:hidden}
.scenarios-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:24px}
.scenario-card{background:#fff;border:1px solid #EEF0F6;border-radius:var(--radius-2xl);overflow:hidden;transition:all .25s}
.scenario-card:hover{box-shadow:var(--shadow-lg);border-color:transparent}
.scenario-header{padding:28px 32px;display:flex;align-items:center;gap:16px;border-bottom:1px solid #f0f2f7}
.scenario-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--gradient-tencent);color:#fff;font-size:16px;font-weight:700;flex-shrink:0}
.scenario-header h3{font-size:20px;font-weight:600;color:var(--title-color);margin-bottom:4px}
.scenario-industry{font-size:13px;color:var(--muted);font-weight:500}
.scenario-body{padding:24px 32px 28px;display:grid;grid-template-columns:1fr 1fr auto;gap:32px;align-items:start}
.scenario-section{display:flex;flex-direction:column;gap:10px}
.scenario-label{display:inline-block;padding:4px 12px;font-size:12px;font-weight:600;border-radius:4px;width:fit-content;margin-bottom:4px}
.scenario-label-pain{background:rgba(239,68,68,.08);color:var(--danger)}
.scenario-label-solution{background:rgba(0,82,217,.08);color:var(--blue)}
.scenario-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.scenario-list li{font-size:14px;color:var(--body-color);line-height:1.6;padding-left:20px;position:relative}
.scenario-list li::before{content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%}
.scenario-label-pain ~ .scenario-list li::before{background:var(--danger)}
.scenario-label-solution ~ .scenario-list li::before{background:var(--blue)}
.scenario-value{background:linear-gradient(135deg,rgba(0,82,217,.04),rgba(7,193,96,.04));border-radius:14px;padding:20px;border:1px solid rgba(0,82,217,.1);min-width:200px}
.scenario-value-label{display:inline-block;padding:4px 12px;background:rgba(7,193,96,.08);color:var(--green);font-size:12px;font-weight:600;border-radius:4px;margin-bottom:8px}
.scenario-value p{font-size:14px;font-weight:600;color:var(--title-color);line-height:1.6}

/* ===== CUSTOMER SUCCESS ===== */
.section-cases{background:var(--bg-white)}
.cases-grid{display:grid;grid-template-columns:repeat(1,1fr);gap:32px}
.case-card{background:#fff;border:1px solid #EEF0F6;border-radius:var(--radius-2xl);overflow:hidden;transition:all .25s}
.case-card:hover{box-shadow:var(--shadow-lg);border-color:transparent}
.case-header{padding:32px 36px 24px;border-bottom:1px solid #f0f2f7}
.case-tag{display:inline-block;padding:5px 14px;background:rgba(0,82,217,.08);color:var(--blue);font-size:12px;font-weight:600;border-radius:4px;margin-bottom:12px}
.case-header h3{font-size:22px;font-weight:600;color:var(--title-color);margin-bottom:8px}
.case-header p{font-size:14px;color:var(--subtitle-color);line-height:1.6}
.case-body{padding:24px 36px 32px;display:grid;grid-template-columns:1fr 1fr auto;gap:32px;align-items:start}
.case-section{display:flex;flex-direction:column;gap:10px}
.case-label{display:inline-block;padding:4px 12px;font-size:12px;font-weight:600;border-radius:4px;width:fit-content;margin-bottom:4px}
.case-label-pain{background:rgba(239,68,68,.08);color:var(--danger)}
.case-label-solution{background:rgba(0,82,217,.08);color:var(--blue)}
.case-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.case-list li{font-size:14px;color:var(--body-color);line-height:1.6;padding-left:20px;position:relative}
.case-list li::before{content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%}
.case-label-pain ~ .case-list li::before{background:var(--danger)}
.case-label-solution ~ .case-list li::before{background:var(--blue)}
.case-metrics{display:flex;flex-direction:column;gap:16px;min-width:180px}
.case-metric{text-align:center;padding:20px 16px;background:linear-gradient(135deg,rgba(0,82,217,.04),rgba(7,193,96,.04));border-radius:14px;border:1px solid rgba(0,82,217,.08)}
.case-metric-value{font-size:28px;font-weight:700;background:var(--gradient-tencent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.case-metric-label{font-size:12px;color:var(--subtitle-color);margin-top:6px}

/* ===== CTA ===== */
.cta-section{padding:0;position:relative;overflow:hidden}
.cta-inner{max-width:none;margin:0;background:linear-gradient(135deg,#0052D9 0%,#448AFF 100%);padding:90px 40px;text-align:center;position:relative;overflow:hidden}
.cta-inner::before{content:'';position:absolute;top:-30%;right:-5%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,0.12),transparent 70%);border-radius:50%;pointer-events:none}
.cta-inner::after{content:'';position:absolute;bottom:-40%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(255,255,255,0.08),transparent 70%);border-radius:50%;pointer-events:none}
.cta-title{font-size:36px;font-weight:800;color:#fff;margin-bottom:12px;position:relative;z-index:1}
.cta-desc{font-size:17px;color:rgba(255,255,255,0.9);line-height:1.6;margin-bottom:36px;position:relative;z-index:1}
.cta-button{display:inline-flex;align-items:center;gap:8px;padding:16px 48px;background:#fff;color:#0052D9;font-size:16px;font-weight:700;border-radius:10px;transition:all .25s;position:relative;z-index:1;box-shadow:0 8px 24px rgba(0,0,0,0.15)}
.cta-button:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,0.2);background:#f8f9ff}

/* ===== FLOAT WIDGET ===== */
.float-widget{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:9999;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{position:relative;display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:12px;background:#fff;border:1px solid var(--border);box-shadow:0 4px 16px rgba(0,0,0,.08);cursor:pointer;transition:all .25s;color:var(--blue)}
.float-btn svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.float-btn:hover{background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;border-color:transparent;transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,82,217,.25)}
.float-btn .float-tip{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(-8px);white-space:nowrap;background:#1a1a2e;color:#fff;font-size:13px;padding:8px 14px;border-radius:8px;opacity:0;visibility:hidden;transition:all .25s;pointer-events:none;font-weight:500}
.float-btn:hover .float-tip{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.float-btn .float-tip::after{content:'';position:absolute;right:-5px;top:50%;transform:translateY(-50%);border-width:5px 0 5px 6px;border-style:solid;border-color:transparent transparent transparent #1a1a2e}
.float-btn.wechat-btn:hover .wechat-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.wechat-pop{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(-8px);opacity:0;visibility:hidden;transition:all .25s;background:#fff;border-radius:14px;padding:16px;box-shadow:0 8px 32px rgba(0,0,0,.12);text-align:center;width:160px}
.wechat-pop img{width:120px;height:120px;border-radius:8px;margin:0 auto 8px}
.wechat-pop .wp-title{font-size:14px;font-weight:600;color:var(--text)}
.wechat-pop .wp-sub{font-size:12px;color:var(--muted);margin-top:4px}
.float-btn.phone-btn:hover .phone-pop,.float-btn.phone-btn.active .phone-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.phone-pop{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(-8px);opacity:0;visibility:hidden;transition:all .25s;background:#fff;border-radius:14px;padding:16px 20px;box-shadow:0 8px 32px rgba(0,0,0,.12);display:flex;align-items:center;gap:12px}
.phone-pop-icon{width:40px;height:40px;border-radius:10px;background:#fef2f2;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.phone-pop-icon svg{width:20px;height:20px;stroke:#ef4444;stroke-width:2;fill:none}
.phone-pop-num{font-size:20px;font-weight:800;color:var(--text)}
.float-btn.top-btn{opacity:0;visibility:hidden;transform:translateY(20px)}
.float-btn.top-btn.show{opacity:1;visibility:visible;transform:translateY(0)}

/* ===== FOOTER ===== */
.footer{background:#0a0f1e;padding:64px 40px 32px}
.footer-inner{max-width:1280px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:48px}
.footer-brand .f-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .f-logo img{width:40px;height:40px;border-radius:10px}
.footer-brand .f-logo span{font-size:20px;font-weight:700;color:#fff}
.footer-brand .f-logo span em{color:#60a5fa;font-style:normal}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.4);line-height:1.8;margin-bottom:20px;max-width:320px}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact-item{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-contact-item svg{width:16px;height:16px;stroke:rgba(255,255,255,.4);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:20px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.4);transition:color .2s}
.footer-col ul li a:hover{color:#60a5fa}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.3)}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.3);transition:color .2s}
.footer-bottom a:hover{color:#60a5fa}

/* ===== Scroll Animations ===== */
[data-aos]{opacity:0;transform:translateY(30px);transition:all .8s cubic-bezier(.4,0,.2,1)}
[data-aos].aos-animate{opacity:1;transform:translateY(0)}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeInDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .section{padding:80px 0}
  .banner-split{flex-direction:column;gap:40px}
  .banner-left{max-width:none;text-align:center}
  .banner-title{font-size:34px;text-align:center}
  .banner-features-list{align-items:center}
  .banner-cta{justify-content:center}
  .banner-right{min-height:440px;width:100%;max-width:480px}
  .banner-stats{grid-template-columns:repeat(2,1fr)}
  .arch-modules{grid-template-columns:repeat(2,1fr)}
  .advantages-grid{grid-template-columns:repeat(2,1fr)}
  .functions-grid{grid-template-columns:1fr}
  .scenario-body{grid-template-columns:1fr;gap:20px}
  .scenario-value{min-width:auto}
  .case-body{grid-template-columns:1fr;gap:20px}
  .case-metrics{flex-direction:row;min-width:auto}
  .section-title{font-size:32px}
  .section-desc{font-size:16px}
  .method-layout{grid-template-columns:1fr;gap:24px}
  .method-tabs{flex-direction:row;flex-wrap:wrap;gap:8px}
  .method-tab{flex:1;min-width:140px}
  .method-blocks{grid-template-columns:1fr;gap:20px}
  .method-viz{flex-direction:column;gap:20px}
  .method-viz-svg{width:100%;height:140px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:60px 0}
  .banner{padding:100px 0 60px}
  .banner-right{display:none}
  .banner-stats{grid-template-columns:repeat(2,1fr)}
  .banner-title{font-size:26px}
  .banner-subtitle{font-size:14px}
  .banner-features-list{gap:10px}
  .banner-cta{flex-direction:column;align-items:stretch}
  .banner-btn-primary,.banner-btn-outline{width:100%;justify-content:center}
  .arch-modules{grid-template-columns:1fr}
  .advantages-grid{grid-template-columns:1fr}
  .scenario-header{flex-direction:column;align-items:flex-start;text-align:left}
  .case-metrics{flex-direction:column}
  .section-title{font-size:26px}
  .section-desc{font-size:15px}
  .method-tabs{flex-direction:column}
  .method-tab{min-width:auto}
  .method-content{padding:24px 20px}
  .method-viz{padding:20px}
  .method-viz-stats{grid-template-columns:1fr}
  .nav-items,.nav-phone{display:none}
  .float-widget{right:12px;top:50%;transform:translateY(-50%)}
  .float-btn{width:46px;height:46px}
  .float-btn .float-tip,.float-btn .wechat-pop{display:none}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}