/* 小汤圆网络主题主样式表 */
:root{
  --blue:#2563eb;--purple:#7c3aed;--cyan:#06b6d4;
  --dark:#0a0f1e;--dark2:#131b34;--dark3:#1a2240;
  --text:#1a1a2e;--text2:#4a5568;--muted:#9ca3af;
  --bg:#ffffff;--bg2:#f8fafc;--border:#e5e7eb;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);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(255,255,255,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,0.05);transition:box-shadow .3s}
.nav-wrap.scrolled{box-shadow:0 1px 16px rgba(0,0,0,0.07)}
.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(37,99,235,0.2)}
.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(37,99,235,0.06)}
.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(--purple));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(0,0,0,0.12),0 8px 20px rgba(0,0,0,0.06);border:1px solid rgba(0,0,0,0.04);width:620px;padding:0;opacity:0;visibility:hidden;transition:all .3s cubic-bezier(0.4,0,0.2,1);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,#3b82f6,#7c3aed);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(59,130,246,0.3)}
.video-thumb::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,0.2),transparent 60%)}
.video-thumb::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.08) 1px,transparent 1px);background-size:24px 24px}
.play-btn{width:48px;height:48px;background:rgba(255,255,255,0.95);border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;box-shadow:0 4px 16px rgba(0,0,0,0.15);transition:transform .2s}
.video-thumb:hover .play-btn{transform:scale(1.08)}
.play-btn svg{width:16px;height:16px;fill:#3b82f6;margin-left:2px}
.video-badge{position:absolute;top:10px;right:12px;background:rgba(0,0,0,0.35);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(0,0,0,0.2)}
.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(--purple));color:#fff;border:none;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;box-shadow:0 4px 14px rgba(37,99,235,0.28);display:inline-block}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(37,99,235,0.38)}
.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}

/* ===== HERO (lingxing.com style: white bg, dark text) ===== */
.hero{background:#f8f9ff;padding:120px 40px 80px;position:relative;overflow:hidden}
.hero-glow1{position:absolute;top:-120px;right:8%;width:550px;height:550px;background:radial-gradient(circle,rgba(37,84,254,0.07),transparent 70%);border-radius:50%;pointer-events:none}
.hero-glow2{position:absolute;bottom:-180px;left:-80px;width:450px;height:450px;background:radial-gradient(circle,rgba(31,255,225,0.05),transparent 70%);border-radius:50%;pointer-events:none}
.hero-glow3{position:absolute;top:35%;right:38%;width:280px;height:280px;background:radial-gradient(circle,rgba(37,84,254,0.04),transparent 70%);border-radius:50%;pointer-events:none}
.hero-inner{max-width:1280px;margin:0 auto;position:relative;z-index:1;display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.hero-left{position:relative}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:44px;font-weight:800;color:#1a2035;line-height:1.35;margin-bottom:20px;letter-spacing:1px}
.hero h1 .grad{color:#2554fe}
.hero p.hero-sub{font-size:16px;color:#3a4057;line-height:1.9;margin-bottom:32px;max-width:560px}
.hero-btns{display:flex;gap:16px;margin-bottom:40px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:13px 34px;background:linear-gradient(121.1deg,#2554fe,#1fffe1);color:#fff;border-radius:10px;font-size:15px;font-weight:600;transition:all .25s;box-shadow:0 8px 24px rgba(37,84,254,0.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(37,84,254,0.35)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:13px 34px;background:#fff;color:#1a2035;border:1px solid #e5e7eb;border-radius:10px;font-size:15px;font-weight:600;transition:all .25s;box-shadow:0 2px 8px rgba(0,0,0,0.04)}
.btn-secondary:hover{border-color:#2554fe;color:#2554fe;box-shadow:0 4px 12px rgba(37,84,254,0.1)}
.hero-stats{display:flex;gap:56px;flex-wrap:wrap;margin-bottom:24px}
.hero-stat{position:relative}
.hero-stat .num{font-size:48px;font-weight:800;color:#2554fe}
.hero-stat .num .unit{font-size:24px}
.hero-stat .label{font-size:15px;color:#5c5e66;margin-top:6px}
.hero-source{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:#5c5e66;margin-top:10px}
.hero-source .check{width:15px;height:15px;border-radius:50%;background:rgba(37,84,254,0.1);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.hero-source .check svg{width:9px;height:9px;stroke:#2554fe;stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ===== HERO VISUAL (animated dashboard - light theme) ===== */
.hero-visual{position:relative}
.dash{background:#fff;border:1px solid #e8ecf4;border-radius:20px;padding:22px;box-shadow:0 20px 60px rgba(37,84,254,0.1),0 4px 12px rgba(0,0,0,0.04);position:relative;overflow:hidden}
.dash::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#2554fe,#1fffe1)}
.dash-scan{position:absolute;top:3px;left:0;width:100%;height:2px;background:linear-gradient(90deg,transparent,rgba(37,84,254,0.25),transparent);animation:scan 3s linear infinite;z-index:2}
@keyframes scan{0%{transform:translateY(0)}100%{transform:translateY(280px)}}
.dash-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.dash-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:#1a2035}
.dash-title svg{width:16px;height:16px;stroke:#2554fe;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.dash-live{display:flex;align-items:center;gap:5px;font-size:11px;color:#2554fe}
.dash-live .dot{width:6px;height:6px;background:#2554fe;border-radius:50%;animation:pulse 1.5s infinite}
.dash-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.dash-metric{background:#f8f9ff;border:1px solid #eef1f8;border-radius:12px;padding:13px 11px;position:relative;overflow:hidden}
.dash-metric .m-label{font-size:11px;color:#5c5e66;margin-bottom:8px}
.dash-metric .m-value{font-size:21px;font-weight:800;color:#1a2035;line-height:1}
.dash-metric .m-value .m-unit{font-size:12px;font-weight:600;color:#5c5e66}
.dash-metric .m-trend{font-size:10px;margin-top:6px;display:flex;align-items:center;gap:2px}
.dash-metric .m-trend.up{color:#10b981}
.dash-metric .m-trend.down{color:#ef4444}
.dash-chart{background:#f8f9ff;border:1px solid #eef1f8;border-radius:12px;padding:16px;margin-bottom:14px;display:flex;gap:18px;align-items:stretch}
.dash-bars-section{flex:1;min-width:0;display:flex;flex-direction:column}
.dash-chart-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.dash-chart-title{font-size:12px;color:#3a4057}
.dash-chart-legend{display:flex;gap:10px;font-size:10px;color:#5c5e66}
.dash-chart-legend span{display:flex;align-items:center;gap:4px}
.dash-donut{width:130px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-left:1px solid #eef1f8;padding-left:18px;flex-shrink:0}
.dash-donut .dash-chart-title{margin-bottom:10px;text-align:center;width:100%}
.donut-wrap{position:relative;width:100px;height:100px}
.donut-svg{width:100px;height:100px;transform:rotate(-90deg)}
.donut-svg circle{fill:none;stroke-width:12;stroke-linecap:butt}
.donut-bg{stroke:#eef1f8}
.donut-arc{animation:arcGrow 1.2s cubic-bezier(0.4,0,0.2,1) forwards;stroke-dasharray:0 251.3}
.donut-arc.a1{stroke:#2554fe;animation-delay:.3s;stroke-dashoffset:0}
.donut-arc.a2{stroke:#7c3aed;animation-delay:.55s;stroke-dashoffset:-113}
.donut-arc.a3{stroke:#1fffe1;animation-delay:.8s;stroke-dashoffset:-201}
@keyframes arcGrow{to{stroke-dasharray:var(--len) 251.3}}
.donut-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.donut-center .dc-num{font-size:20px;font-weight:800;color:#1a2035;line-height:1}
.donut-center .dc-label{font-size:9px;color:#5c5e66;margin-top:3px}
.donut-legend{display:flex;flex-direction:column;gap:5px;margin-top:10px;width:100%}
.donut-legend-item{display:flex;align-items:center;gap:6px;font-size:10px;color:#5c5e66}
.donut-legend-item i{width:8px;height:8px;border-radius:2px;flex-shrink:0}
.donut-legend-item b{font-weight:700;color:#1a2035;margin-left:auto}
.dash-chart-legend i{width:8px;height:8px;border-radius:2px;display:inline-block}
.dash-bars{display:flex;align-items:flex-end;gap:7px;height:90px}
.dash-bar{flex:1;border-radius:4px 4px 0 0;position:relative;animation:barGrow 1.2s cubic-bezier(0.4,0,0.2,1) forwards;transform-origin:bottom;transform:scaleY(0)}
.dash-bar.b1{background:linear-gradient(180deg,#7aa6ff,#2554fe);animation-delay:.1s}
.dash-bar.b2{background:linear-gradient(180deg,#7aa6ff,#2554fe);animation-delay:.2s}
.dash-bar.b3{background:linear-gradient(180deg,#a78bfa,#7c3aed);animation-delay:.3s}
.dash-bar.b4{background:linear-gradient(180deg,#a78bfa,#7c3aed);animation-delay:.4s}
.dash-bar.b5{background:linear-gradient(180deg,#5eead4,#1fffe1);animation-delay:.5s}
.dash-bar.b6{background:linear-gradient(180deg,#5eead4,#1fffe1);animation-delay:.6s}
.dash-bar.b7{background:linear-gradient(180deg,#6ee7b7,#10b981);animation-delay:.7s}
@keyframes barGrow{to{transform:scaleY(1)}}
.dash-bar .bar-val{position:absolute;top:-16px;left:50%;transform:translateX(-50%);font-size:9px;color:#5c5e66;white-space:nowrap}
.dash-foot{display:flex;gap:10px}
.dash-foot-item{flex:1;background:#f8f9ff;border:1px solid #eef1f8;border-radius:10px;padding:11px;display:flex;align-items:center;gap:10px}
.dash-foot-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.dash-foot-icon.blue{background:rgba(37,84,254,0.1)}
.dash-foot-icon.purple{background:rgba(124,58,237,0.1)}
.dash-foot-icon svg{width:16px;height:16px;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.dash-foot-info .f-label{font-size:10px;color:#5c5e66;margin-bottom:2px}
.dash-foot-info .f-value{font-size:14px;font-weight:700;color:#1a2035}
.float-card{position:absolute;background:#fff;border:1px solid #e8ecf4;border-radius:14px;padding:11px 16px;box-shadow:0 10px 30px rgba(37,84,254,0.12);animation:floatY 3s ease-in-out infinite}
.float-card.fc1{top:-18px;right:-12px;animation-delay:0s}
.float-card.fc2{bottom:24px;left:-20px;animation-delay:1s}
.float-card .fc-label{font-size:10px;color:#5c5e66;margin-bottom:3px}
.float-card .fc-value{font-size:18px;font-weight:800;color:#1a2035}
.float-card .fc-value.green{color:#10b981}
.float-card .fc-value.pink{color:#ef4444}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ===== 客户LOGO滚动 ===== */
.logo-marquee{background:#fff;padding:36px 0 40px;border-top:1px solid #f0f2f8;overflow:hidden;position:relative}
.logo-marquee::before,.logo-marquee::after{content:'';position:absolute;top:0;bottom:0;width:140px;z-index:2;pointer-events:none}
.logo-marquee::before{left:0;background:linear-gradient(90deg,#fff 30%,transparent)}
.logo-marquee::after{right:0;background:linear-gradient(270deg,#fff 30%,transparent)}
.logo-marquee-title{text-align:center;font-size:13px;color:#5c5e66;margin-bottom:24px;letter-spacing:1px}
.logo-marquee-title b{color:#2554fe;font-weight:600}
.logo-track{display:flex;gap:72px;width:max-content;padding:0 36px;animation:marquee 32s linear infinite;align-items:center}
.logo-track:hover{animation-play-state:paused}
.logo-item{display:flex;align-items:center;flex-shrink:0;opacity:.6;transition:opacity .3s;cursor:pointer;height:52px}
.logo-item:hover{opacity:1}
.logo-item img{height:42px;width:auto;max-width:180px;object-fit:contain;transition:transform .3s}
.logo-item:hover img{transform:scale(1.05)}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ===== SECTION COMMON ===== */
.section{padding:80px 40px}
.section-inner{max-width:1280px;margin:0 auto}
.section-light{background:#fff}
.section-gray{background:var(--bg2)}
.section-dark{background:var(--dark);color:#fff}
.section-title{text-align:center;margin-bottom:12px}
.section-title .eyebrow{display:inline-block;font-size:14px;color:var(--blue);font-weight:600;margin-bottom:12px;letter-spacing:1px}
.section-title h2{font-size:36px;font-weight:800;color:var(--text);letter-spacing:.5px}
.section-dark .section-title h2{color:#fff}
.section-title h2 .grad{background:linear-gradient(135deg,var(--blue),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-desc{text-align:center;font-size:16px;color:var(--muted);margin-bottom:56px;max-width:600px;margin-left:auto;margin-right:auto;line-height:1.8}
.section-dark .section-desc{color:rgba(255,255,255,0.5)}

/* ===== 核心业务 CARDS ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:32px;transition:all .3s;cursor:pointer;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--purple));transform:scaleX(0);transition:transform .3s;transform-origin:left}
.feature-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,0.08);border-color:transparent}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#eff6ff,#f3e8ff);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:28px;height:28px;stroke:var(--blue);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px}
.feature-tag{font-size:12px;color:var(--blue);background:#eff6ff;padding:4px 10px;border-radius:6px;font-weight:500;transition:all .2s}
.feature-tag:hover{background:#dbeafe;transform:translateY(-1px)}

/* ===== 业务详情 (alternating) ===== */
.detail-row{display:flex;align-items:center;gap:64px}
.detail-row.reverse{flex-direction:row-reverse}
.detail-text{flex:1}
.detail-text .tag{display:inline-block;font-size:13px;color:var(--blue);font-weight:600;margin-bottom:12px;letter-spacing:.5px}
.detail-text h3{font-size:30px;font-weight:800;color:var(--text);margin-bottom:16px;line-height:1.4}
.detail-text .desc{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:28px}
.detail-list{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.detail-list-item{display:flex;align-items:flex-start;gap:12px}
.detail-list-item .check{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--purple));display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.detail-list-item .check svg{width:12px;height:12px;stroke:#fff;stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round}
.detail-list-item .text{font-size:15px;color:var(--text);line-height:1.6}
.detail-list-item .text strong{font-weight:600}
.detail-cta{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;border-radius:10px;font-size:15px;font-weight:600;transition:all .25s;box-shadow:0 6px 20px rgba(37,99,235,0.25)}
.detail-cta:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(37,99,235,0.35)}
.detail-visual{flex:1;position:relative}

/* Mockup: Search Dashboard */
.mock-search{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,0.1);overflow:hidden;border:1px solid var(--border)}
.mock-search-bar{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.mock-search-bar .dots{display:flex;gap:6px}
.mock-search-bar .dots span{width:10px;height:10px;border-radius:50%}
.mock-search-bar .dots span:nth-child(1){background:#ff5f57}
.mock-search-bar .dots span:nth-child(2){background:#ffbd2e}
.mock-search-bar .dots span:nth-child(3){background:#28c940}
.mock-search-bar .url{flex:1;background:#f1f5f9;border-radius:6px;padding:6px 12px;font-size:12px;color:var(--muted)}
.mock-search-body{padding:20px}
.mock-ad{background:linear-gradient(135deg,#eff6ff,#f3e8ff);border:1px solid #dbeafe;border-radius:10px;padding:14px;margin-bottom:12px;position:relative}
.mock-ad .ad-tag{position:absolute;top:8px;right:10px;font-size:10px;color:var(--blue);background:#fff;padding:2px 6px;border-radius:3px;font-weight:600}
.mock-ad .ad-title{font-size:14px;font-weight:600;color:var(--blue);margin-bottom:4px}
.mock-ad .ad-url{font-size:11px;color:#16a34a;margin-bottom:4px}
.mock-ad .ad-desc{font-size:12px;color:var(--text2);line-height:1.5}
.mock-result{padding:12px 14px;border-bottom:1px solid #f1f5f9}
.mock-result .r-title{font-size:14px;color:var(--blue);margin-bottom:2px}
.mock-result .r-url{font-size:11px;color:#16a34a;margin-bottom:2px}
.mock-result .r-desc{font-size:12px;color:var(--muted)}

/* Mockup: Feed/Info Stream */
.mock-feed{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,0.1);overflow:hidden;border:1px solid var(--border);max-width:340px;margin:0 auto}
.mock-feed-header{padding:16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.mock-feed-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#f472b6,#a78bfa)}
.mock-feed-name{font-size:14px;font-weight:600;color:var(--text)}
.mock-feed-meta{font-size:11px;color:var(--muted)}
.mock-feed-img{width:100%;height:200px;background:linear-gradient(135deg,#fbbf24,#f472b6,#a78bfa);position:relative}
.mock-feed-img::after{content:'广告';position:absolute;top:8px;right:8px;background:rgba(0,0,0,0.4);color:#fff;font-size:10px;padding:2px 6px;border-radius:3px}
.mock-feed-actions{padding:12px 16px;display:flex;gap:16px}
.mock-feed-action{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--muted)}
.mock-feed-action svg{width:16px;height:16px;stroke:var(--muted);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mock-feed-caption{padding:0 16px 14px;font-size:12px;color:var(--text2);line-height:1.5}
.mock-feed-stats{padding:10px 16px;background:#eff6ff;border-top:1px solid #dbeafe;display:flex;justify-content:space-between;align-items:center}
.mock-feed-stats .s-label{font-size:11px;color:var(--blue);font-weight:600}
.mock-feed-stats .s-num{font-size:16px;font-weight:800;color:var(--blue)}

/* Mockup: GEO/AI Chat */
.mock-ai{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,0.1);overflow:hidden;border:1px solid var(--border)}
.mock-ai-header{padding:14px 18px;background:linear-gradient(135deg,var(--dark),var(--dark2));display:flex;align-items:center;gap:10px}
.mock-ai-header .ai-icon{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--purple));display:flex;align-items:center;justify-content:center}
.mock-ai-header .ai-icon svg{width:16px;height:16px;stroke:#fff;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.mock-ai-header .ai-name{font-size:14px;font-weight:600;color:#fff}
.mock-ai-body{padding:20px}
.mock-ai-q{background:#f1f5f9;border-radius:12px;padding:12px 14px;font-size:13px;color:var(--text);margin-bottom:14px;max-width:85%}
.mock-ai-a{background:linear-gradient(135deg,#eff6ff,#f3e8ff);border:1px solid #dbeafe;border-radius:12px;padding:14px;font-size:13px;color:var(--text);line-height:1.7}
.mock-ai-a strong{color:var(--blue);font-weight:600}
.mock-ai-brands{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.mock-ai-brand{font-size:11px;color:var(--blue);background:#fff;padding:3px 8px;border-radius:6px;border:1px solid #dbeafe;font-weight:500}

/* ===== 为什么选择 ===== */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:32px 24px;text-align:center;transition:all .3s}
.why-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,0.08);border-color:transparent}
.why-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#eff6ff,#f3e8ff);display:flex;align-items:center;justify-content:center;margin:0 auto 20px}
.why-icon svg{width:28px;height:28px;stroke:var(--blue);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.why-card h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:12px}
.why-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:20px}
.why-num{font-size:32px;font-weight:800;background:linear-gradient(135deg,var(--blue),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.why-num .unit{font-size:16px}
.why-num-label{font-size:13px;color:var(--muted);margin-top:4px}

/* ===== 精细化运营 ===== */
.adv-header{text-align:center;margin-bottom:48px}
.adv-header .tag{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--blue);margin-bottom:16px}
.adv-header .tag::before{content:'';width:20px;height:2px;background:linear-gradient(90deg,var(--blue),var(--purple))}
.adv-header h2{font-size:40px;font-weight:800;margin-bottom:16px;letter-spacing:-0.5px;color:var(--text)}
.adv-header h2 .grad{background:linear-gradient(135deg,var(--blue),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.adv-header p{font-size:18px;color:var(--text2);max-width:600px;margin:0 auto}
.adv-tabs{display:flex;justify-content:center;gap:24px;margin-bottom:56px;flex-wrap:wrap}
.adv-tab{padding:16px 36px;border-radius:12px;background:#fff;border:1px solid var(--border);cursor:pointer;transition:all .3s cubic-bezier(0.4,0,0.2,1);font-size:16px;font-weight:600;color:var(--text2);display:flex;align-items:center;gap:10px;box-shadow:0 4px 20px rgba(0,0,0,0.06)}
.adv-tab:hover{color:var(--blue);border-color:var(--blue);transform:translateY(-2px)}
.adv-tab.active{background:linear-gradient(135deg,var(--blue),var(--purple));border-color:transparent;color:#fff;box-shadow:0 4px 16px rgba(37,99,235,0.3)}
.adv-tab .tab-icon{font-size:20px}
.adv-panel{display:none}
.adv-panel.active{display:block;animation:fadeInAdv .4s ease}
@keyframes fadeInAdv{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.adv-panel-inner{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.adv-left{background:#fff;border-radius:16px;border:1px solid var(--border);padding:40px;box-shadow:0 4px 20px rgba(0,0,0,0.06)}
.adv-left h3{font-size:28px;font-weight:700;margin-bottom:12px;color:var(--text)}
.adv-left .desc{font-size:16px;color:var(--text2);margin-bottom:20px;line-height:1.7}
.adv-left .lead{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:28px;padding:18px;background:#f8fafc;border-radius:12px;border-left:3px solid var(--blue)}
.adv-items{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.adv-item{display:flex;gap:12px;padding:16px;border-radius:12px;background:#f5f7fa;border:1px solid #f0f1f4;transition:all .3s}
.adv-item:hover{background:rgba(37,99,235,0.04);border-color:rgba(37,99,235,0.2)}
.adv-item i{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,rgba(37,99,235,0.12),rgba(124,58,237,0.08));display:flex;align-items:center;justify-content:center;flex-shrink:0}
.adv-item i svg{width:18px;height:18px;stroke:var(--blue);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.adv-item h4{font-size:14px;font-weight:600;margin-bottom:4px;color:var(--text)}
.adv-item p{font-size:12px;color:var(--muted);line-height:1.4}
.adv-right{display:flex;flex-direction:column;gap:20px}
.adv-step-card{background:#fff;border-radius:16px;border:1px solid var(--border);padding:24px;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:all .3s}
.adv-step-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(37,99,235,0.12);border-color:rgba(37,99,235,0.3)}
.adv-step-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.adv-step-num{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--purple));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff;flex-shrink:0}
.adv-step-header h4{font-size:16px;font-weight:600;color:var(--text)}
.adv-step-header .step-label{font-size:12px;color:var(--muted);margin-left:auto}
.adv-step-card .step-desc{font-size:14px;color:var(--text2);line-height:1.6}

/* ===== 客户案例 (自动轮播) ===== */
.case-carousel{position:relative;overflow:hidden}
.case-carousel::before,.case-carousel::after{content:'';position:absolute;top:0;bottom:0;width:80px;z-index:3;pointer-events:none}
.case-carousel::before{left:0;background:linear-gradient(90deg,var(--bg2) 45%,transparent)}
.case-carousel::after{right:0;background:linear-gradient(270deg,var(--bg2) 45%,transparent)}
.case-viewport{overflow:hidden}
.case-track{display:flex;gap:20px;width:max-content;padding:0 10px;animation:caseMarquee 16s ease-in-out infinite alternate;will-change:transform}
.case-track:hover{animation-play-state:paused}
/* 单份内容来回滚动：平移到“最后一张贴视口右缘”后反向滑回，无限循环且源HTML/ DOM 均不重复 */
@keyframes caseMarquee{0%{transform:translateX(0)}100%{transform:translateX(min(0px, calc(-100% + 100vw)))}}
.case-card{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s;cursor:pointer;display:block;flex:none;width:360px;min-width:0}
.case-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,0.1);border-color:transparent}
.case-img{height:200px;position:relative;overflow:hidden}
.case-img.gradient1{background:linear-gradient(135deg,#667eea,#764ba2)}
.case-img.gradient2{background:linear-gradient(135deg,#f093fb,#f5576c)}
.case-img.gradient3{background:linear-gradient(135deg,#4facfe,#00f2fe)}
.case-img.gradient4{background:linear-gradient(135deg,#43e97b,#38f9d7)}
.case-img.gradient5{background:linear-gradient(135deg,#fa709a,#fee140)}
.case-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 60%,rgba(0,0,0,0.25) 100%)}

.case-img{background-size:cover;background-position:center;transition:transform .4s}
.case-card:hover .case-img{transform:scale(1.05)}

.case-tag{position:absolute;top:12px;left:12px;background:rgba(255,255,255,0.95);color:var(--blue);font-size:12px;font-weight:600;padding:4px 12px;border-radius:6px;z-index:1}
.case-body{padding:24px}
.case-body h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px}
.case-body p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.case-result{display:flex;gap:16px;padding-top:16px;border-top:1px solid var(--border)}
.case-result-item .r-num{font-size:22px;font-weight:800;background:linear-gradient(135deg,var(--blue),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.case-result-item .r-label{font-size:12px;color:var(--muted)}

/* ===== CTA BANNER ===== */
.cta-banner{padding:0;position:relative;overflow:hidden}
.cta-inner{max-width:none;margin:0;background:linear-gradient(90deg,#2554fe 0%,#06b6d4 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%}
.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%}
.cta-inner h2{font-size:36px;font-weight:800;color:#fff;margin-bottom:12px;position:relative;z-index:1}
.cta-inner p{font-size:17px;color:rgba(255,255,255,0.9);margin-bottom:36px;position:relative;z-index:1}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:16px 48px;background:#fff;color:#2554fe;border-radius:10px;font-size:16px;font-weight:700;transition:all .25s;position:relative;z-index:1;box-shadow:0 8px 24px rgba(0,0,0,0.15)}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,0.2);background:#f8f9ff}

/* ===== FOOTER ===== */
.footer{background:var(--dark);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(255,255,255,0.4);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(255,255,255,0.5)}
.footer-contact-item svg{width:16px;height:16px;stroke:rgba(255,255,255,0.4);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(255,255,255,0.4);transition:color .2s}
.footer-col ul li a:hover{color:#60a5fa}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.3)}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,0.3);transition:color .2s}
.footer-bottom a:hover{color:#60a5fa}

/* ===== FLOATING 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(0,0,0,0.08);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(--purple));color:#fff;border-color:transparent;transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,0.25)}
.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)}
.phone-pop{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(-12px);background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 20px;box-shadow:0 12px 40px rgba(0,0,0,0.15);opacity:0;visibility:hidden;transition:all .3s;pointer-events:none;display:flex;align-items:center;gap:12px;white-space:nowrap}
.phone-pop::after{content:'';position:absolute;right:-6px;top:50%;transform:translateY(-50%);border-width:6px 0 6px 7px;border-style:solid;border-color:transparent transparent transparent #fff}
.phone-pop-icon{width:34px;height:34px;border-radius:50%;background:rgba(239,68,68,0.1);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.phone-pop-icon svg{width:16px;height:16px;stroke:#ef4444;stroke-width:2;fill:none}
.phone-pop-num{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.5px}
.float-btn.phone-btn:hover .phone-pop,.float-btn.phone-btn.active .phone-pop{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.wechat-pop{position:absolute;right:60px;top:50%;transform:translateY(-50%) translateX(-12px);width:180px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:0 12px 40px rgba(0,0,0,0.15);opacity:0;visibility:hidden;transition:all .3s;pointer-events:none;text-align:center}
.wechat-pop::after{content:'';position:absolute;right:-6px;top:50%;transform:translateY(-50%);border-width:6px 0 6px 7px;border-style:solid;border-color:transparent transparent transparent #fff}
.wechat-pop img{width:100%;border-radius:8px;margin-bottom:10px}
.wechat-pop .wp-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}
.wechat-pop .wp-sub{font-size:11px;color:var(--muted)}
.float-btn.top-btn{opacity:0;visibility:hidden;transform:translateY(20px)}
.float-btn.top-btn.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-btn.diag-btn{cursor:pointer;-webkit-tap-highlight-color:transparent}

/* ===== ANIMATIONS ===== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero h1{font-size:36px}
  .feature-grid,.why-grid{grid-template-columns:repeat(2,1fr)}
  .case-card{flex:0 0 calc((100% - 20px) / 2)}
  .adv-panel-inner{grid-template-columns:1fr}
  .adv-items{grid-template-columns:1fr}
  .detail-row{flex-direction:column !important;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-items,.nav-right{display:none}
  .mobile-toggle{display:flex}
  .nav{padding:0 20px;justify-content:space-between}
  .hero{padding:100px 20px 60px}
  .hero h1{font-size:28px}
  .hero p.hero-sub{font-size:14px}
  .hero-stats{gap:24px}
  .hero-stat .num{font-size:32px}
  .hero-stat .label{font-size:13px}
  .float-card{display:none}
  .dash-metrics{grid-template-columns:1fr 1fr}
  .section{padding:56px 20px}
  .section-title h2{font-size:26px}
  .feature-grid,.why-grid{grid-template-columns:1fr}
  .case-card{width:280px}
  .adv-left{padding:28px 20px}
  .adv-tab{padding:12px 18px;font-size:14px}
  .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}
  .cta-inner{padding:40px 24px}
  .cta-inner h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .dropdown{width:100%;left:0;transform:translateY(-12px)}
  .nav-item:hover .dropdown{transform:translateY(0)}
}