/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#171717;background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased;font-size:15px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input,textarea,select{font:inherit;color:inherit;border:none;outline:none;background:none}
ul,ol{list-style:none}

/* ===== Design Tokens（克制版）===== */
:root{
  --c-primary:#1E40AF;
  --c-primary-hover:#1d3a9e;
  --c-primary-bg:#EFF6FF;
  --c-text:#171717;
  --c-text-2:#4b5563;
  --c-text-3:#6b7280;
  --c-border:#e5e7eb;
  --c-border-2:#d1d5db;
  --c-bg:#fff;
  --c-bg-soft:#f9fafb;
  --container:1200px;
}

/* ===== Container ===== */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ===== Buttons（无阴影,6-8px 圆角）===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 22px;border-radius:6px;font-weight:500;font-size:14px;transition:background .15s ease,color .15s ease,border-color .15s ease;cursor:pointer;white-space:nowrap;line-height:1.4}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover)}
.btn-ghost{background:transparent;color:var(--c-text);border:1px solid var(--c-border-2)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-light{background:#fff;color:var(--c-primary)}
.btn-light:hover{background:var(--c-primary-bg)}

/* ===== Top Nav（黑底,纯色 logo）===== */
.topnav{position:fixed;top:0;left:0;right:0;height:60px;background:#0b1220;z-index:100;border-bottom:1px solid rgba(255,255,255,.06)}
.topnav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;max-width:1400px;margin:0 auto;padding:0 28px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand-logo{width:32px;height:32px;border-radius:6px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:15px;color:#fff}
.brand-text strong{font-size:15px;font-weight:600;letter-spacing:.5px;display:block;line-height:1.2}
.brand-text span{font-size:12px;color:#9ca3af;display:block;line-height:1.2;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;max-width:780px;margin:0 24px}
.nav-menu a{color:#cbd5e1;font-size:14px;padding:7px 14px;border-radius:4px;transition:color .15s,background .15s;white-space:nowrap}
.nav-menu a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-menu a.active{color:#fff;background:rgba(59,130,246,.18)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:8px 18px;font-size:13px;border-radius:6px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;padding:0;background:transparent;border:1px solid rgba(255,255,255,.18);border-radius:6px;cursor:pointer;flex-shrink:0}
.nav-toggle:hover{border-color:rgba(255,255,255,.4)}
.nav-toggle-bar{width:18px;height:2px;background:#fff;border-radius:1px}

/* ===== Hero（陈述句,无金句）===== */
.hero{position:relative;min-height:100vh;width:100%;background:#0b1220 url(./images/hero-restaurant.webp) center/cover no-repeat;display:flex;align-items:center;padding-top:60px}
.hero::after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.55);z-index:1}
.hero-inner{position:relative;z-index:2;width:100%;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;max-width:1280px;margin:0 auto;padding:140px 40px 60px}
.hero-side{background:rgba(11,18,32,.82);padding:32px 28px;border-radius:8px;border:1px solid rgba(255,255,255,.1);color:#e5e7eb;align-self:start}
.hero-side h2{color:#fff;font-size:18px;font-weight:700;line-height:1.4;margin-bottom:14px;letter-spacing:.5px}
.hero-side p{color:#cbd5e1;font-size:13.5px;line-height:1.7;margin-bottom:14px}
.hero-side .not-list{list-style:none;display:grid;grid-template-columns:1fr;gap:8px;margin-top:6px}
.hero-side .not-list li{font-size:13.5px;color:#e5e7eb;line-height:1.65;padding-left:18px;position:relative}
.hero-side .not-list li::before{content:"×";position:absolute;left:0;top:0;color:#9ca3af;font-weight:600;font-size:14px;line-height:1.7}
.hero-side .not-list li.do{color:#fff}
.hero-side .not-list li.do::before{content:"·";color:#10A37F;font-size:22px;line-height:1.1;top:4px}
.hero-card{background:rgba(11,18,32,.82);padding:44px 40px;border-radius:8px;border:1px solid rgba(255,255,255,.1);max-width:600px;width:100%}
.hero-tag{display:inline-block;color:#fff;font-size:13px;background:var(--c-primary);padding:4px 12px;border-radius:4px;margin-bottom:18px;line-height:1.4}
.hero-title{color:#fff;font-size:36px;font-weight:700;line-height:1.4;margin-bottom:18px;letter-spacing:.5px}
.hero-sub{color:#cbd5e1;font-size:15.5px;line-height:1.8;margin-bottom:28px;max-width:520px}
.hero-sub b{color:#fff;font-weight:500}
.hero-ctas{display:flex;gap:10px;flex-wrap:wrap}
.hero-ctas .btn{padding:12px 24px;font-size:14px}

/* ===== Section base ===== */
.section{padding:80px 0;position:relative}
.section-head{margin-bottom:48px}
.section-head.center{text-align:center;max-width:760px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;color:var(--c-primary);font-size:13px;font-weight:500;margin-bottom:12px;padding:3px 10px;background:var(--c-primary-bg);border-radius:4px;line-height:1.4}
.section-title{font-size:28px;font-weight:700;color:var(--c-text);line-height:1.4;margin-bottom:12px;letter-spacing:.5px}
.section-title em{font-style:normal;color:var(--c-primary)}
.section-sub{color:var(--c-text-2);font-size:15px;line-height:1.75;max-width:680px}

/* ===== L2 品牌宣言 + 3 方案（无金句）===== */
.manifesto{background:#fff;padding:80px 0 60px}
.manifesto-title{font-size:30px;font-weight:700;text-align:center;line-height:1.5;color:var(--c-text);margin-bottom:40px;letter-spacing:.5px;max-width:780px;margin-left:auto;margin-right:auto}
.manifesto-title em{font-style:normal;color:var(--c-primary)}
.solution-tabs{display:flex;justify-content:center;gap:0;margin-bottom:48px;flex-wrap:wrap;border-bottom:1px solid var(--c-border)}
.solution-tab{padding:14px 24px;color:var(--c-text-2);font-size:15px;font-weight:500;cursor:pointer;transition:color .15s,border-color .15s;border-bottom:2px solid transparent;margin-bottom:-1px}
.solution-tab:hover{color:var(--c-primary)}
.solution-tab.active{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.sol-panel{display:none}
.sol-panel.active{display:block}
/* F4 锚点滚动偏移(顶栏 60px + 余量) */
section[id]{scroll-margin-top:72px}
/* F13 平台报表 vs 门口实测 对比条 */
.cmp-bars{margin-bottom:20px;display:flex;flex-direction:column;gap:8px}
.cmp-row{display:flex;align-items:center;gap:12px;font-size:13px}
.cmp-label{flex-shrink:0;width:76px;color:var(--c-text-2)}
.cmp-track{flex:1;background:#eef1f6;border-radius:4px;height:26px;overflow:hidden}
.cmp-fill{height:100%;display:flex;align-items:center;justify-content:flex-end;padding-right:8px;color:#fff;font-size:12px;font-weight:600;border-radius:4px}
.cmp-fill-full{background:var(--c-primary);width:100%}
.cmp-fill-low{background:#DC2626;width:12.2%}
.cmp-note{font-size:12.5px;color:var(--c-text-3);line-height:1.6;margin-top:2px}
/* F12 定价强化:199 档突出 + 最多人选标签 */
.price-card{position:relative}
.price-card.highlight{padding-top:38px}
.price-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--c-primary);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;white-space:nowrap;letter-spacing:.5px}
/* F14 hover 增强(克制:阴影 + 轻微上浮) */
.price-card,.hw-item,.diff-item{transition:border-color .15s,box-shadow .2s ease,transform .2s ease}
.price-card:hover,.hw-item:hover,.diff-item:hover{box-shadow:0 8px 22px rgba(15,23,42,.08)}
.price-card:hover,.hw-item:hover{transform:translateY(-2px)}
.faq-item summary:hover{color:var(--c-primary)}
/* F10 返回顶部 */
.back-top{position:fixed;right:20px;bottom:84px;z-index:89;width:44px;height:44px;border-radius:6px;border:1px solid var(--c-border-2);background:#fff;color:var(--c-text-2);font-size:18px;line-height:1;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s ease,color .15s,border-color .15s}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{color:var(--c-primary);border-color:var(--c-primary)}
/* F22 移动端:隐藏左侧浮窗,返回顶部收小 */
@media (max-width:640px){
  .float-chat{display:none}
  .back-top{width:40px;height:40px;font-size:16px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px))}
}
/* 无障碍:sr-only */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
/* 表单错误提示 */
.form-error{color:#DC2626;font-size:13px;line-height:1.6;margin-bottom:10px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.split-img{position:relative;overflow:hidden;border-radius:6px;aspect-ratio:4/3;background:#f3f4f6}
.split-img img{width:100%;height:100%;object-fit:cover}
.split-content h3{font-size:24px;font-weight:700;line-height:1.45;color:var(--c-text);margin-bottom:12px;letter-spacing:.5px}
.split-content p{color:var(--c-text-2);font-size:15px;line-height:1.8;margin-bottom:20px}
.split-bullets{margin-bottom:24px;display:flex;flex-direction:column;gap:8px}
.bullet{display:flex;gap:10px;align-items:flex-start;color:var(--c-text-2);font-size:14.5px;line-height:1.7}
.bullet-dot{flex:0 0 4px;width:4px;height:4px;border-radius:50%;background:var(--c-primary);margin-top:11px}
.split-ctas{display:flex;gap:10px;flex-wrap:wrap}

/* ===== L3 4 件套硬件（无圆角阴影三件套,无 monospace）===== */
.hardware{background:var(--c-bg-soft);padding:80px 0}
.hardware-head{margin-bottom:40px;max-width:680px}
.hardware-head h2{font-size:28px;font-weight:700;color:var(--c-text);line-height:1.4;margin-bottom:12px;letter-spacing:.5px}
.hardware-head p{color:var(--c-text-2);font-size:15px;line-height:1.75}
.hardware-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start;margin-bottom:48px}
.hw-text .hw-list{display:flex;flex-direction:column;gap:14px;margin-bottom:24px}
.hw-item{padding:16px 20px;background:#fff;border:1px solid var(--c-border);border-radius:6px}
.hw-item .name{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:4px;display:block}
.hw-item .desc{font-size:14px;color:var(--c-text-2);line-height:1.7}
.hw-item .sku{font-size:12.5px;color:var(--c-text-3);margin-top:6px;display:block;letter-spacing:.3px}
.hardware-img{position:relative;overflow:hidden;border-radius:6px;aspect-ratio:4/3;background:#fff;border:1px solid var(--c-border)}
.hardware-img img{width:100%;height:100%;object-fit:cover}
.hardware-img .label{position:absolute;left:14px;top:14px;background:#fff;color:var(--c-text);font-size:12px;font-weight:500;padding:5px 10px;border-radius:4px;border:1px solid var(--c-border);line-height:1.3}
.hw-bottom{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--c-border);border:1px solid var(--c-border);border-radius:6px;overflow:hidden}
.hw-bottom .hw-item{border:none;border-radius:0;background:#fff;padding:18px 18px 20px}
.hw-bottom .hw-item .num{font-size:13px;color:var(--c-primary);font-weight:600;display:block;margin-bottom:6px;line-height:1.2}

/* ===== L4 5 大业态（无阴影,陈述句）===== */
.biz-section{background:#fff;padding:80px 0}
.biz-tabs{display:flex;justify-content:flex-start;gap:0;margin-bottom:32px;flex-wrap:wrap;border-bottom:1px solid var(--c-border)}
.biz-tab{padding:12px 20px;color:var(--c-text-2);font-size:14.5px;font-weight:500;cursor:pointer;transition:color .15s,border-color .15s;border-bottom:2px solid transparent;margin-bottom:-1px}
.biz-tab:hover{color:var(--c-primary)}
.biz-tab.active{color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:600}
.biz-panel{display:none;grid-template-columns:1fr 1fr;gap:48px;align-items:start;padding-top:8px}
.biz-panel.active{display:grid}
.biz-img{overflow:hidden;border-radius:6px;aspect-ratio:4/3;background:#f3f4f6;border:1px solid var(--c-border)}
.biz-img img{width:100%;height:100%;object-fit:cover}
.biz-content .biz-tag{display:inline-block;color:var(--c-primary);font-size:13px;font-weight:500;margin-bottom:10px;padding:3px 10px;background:var(--c-primary-bg);border-radius:4px;line-height:1.4}
.biz-content h3{font-size:22px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:10px;letter-spacing:.5px}
.biz-content .biz-sub{color:var(--c-text-2);font-size:14.5px;line-height:1.8;margin-bottom:16px}
.biz-points{display:grid;grid-template-columns:1fr 1fr;gap:8px 16px;margin-bottom:18px}
.biz-point{font-size:13.5px;color:var(--c-text-2);padding-left:14px;position:relative;line-height:1.6}
.biz-point::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--c-primary);border-radius:50%}
.biz-price{font-size:13px;color:var(--c-text-3);margin-bottom:16px;padding-top:14px;border-top:1px solid var(--c-border)}
.biz-price b{color:var(--c-primary);font-size:20px;font-weight:700;margin-right:4px}
.biz-price span{font-size:12.5px;margin-left:4px}

/* ===== L5 5 档定价（删英文,删渐变高亮,删最受欢迎角标）===== */
.pricing-section{background:var(--c-bg-soft);padding:80px 0}
.pricing-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:60px}
.price-card{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:24px 20px;display:flex;flex-direction:column;transition:border-color .15s}
.price-card:hover{border-color:var(--c-border-2)}
.price-card.highlight{border-color:var(--c-primary);border-width:1.5px}
.price-step{font-size:12px;color:var(--c-text-3);font-weight:500;margin-bottom:8px;letter-spacing:.5px}
.price-card.highlight .price-step{color:var(--c-primary)}
.price-amt{display:flex;align-items:baseline;gap:2px;margin-bottom:6px}
.price-amt .num{font-size:32px;font-weight:700;color:var(--c-text);letter-spacing:-.5px;line-height:1.1}
.price-amt .cur{font-size:14px;color:var(--c-text-2);font-weight:500;margin-right:2px}
.price-amt .per{font-size:12.5px;color:var(--c-text-3);margin-left:4px}
.price-desc{font-size:13px;color:var(--c-text-2);line-height:1.7;margin-bottom:14px;min-height:44px}
.price-list{margin-bottom:18px;display:flex;flex-direction:column;gap:6px;flex:1}
.price-list li{font-size:12.5px;color:var(--c-text-2);padding-left:16px;position:relative;line-height:1.6}
.price-list li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--c-primary);border-radius:50%}
.price-note{font-size:11.5px;color:var(--c-text-3);margin-top:-8px;margin-bottom:14px;padding-top:8px;border-top:1px dashed var(--c-border);line-height:1.5}
.price-card .btn{width:100%;padding:9px;font-size:13px;margin-top:auto}

/* ===== L5 证言(朴素陈述,不用星标)===== */
.testimonial-head{margin-bottom:32px}
.testimonial-head h3{font-size:22px;font-weight:700;color:var(--c-text);letter-spacing:.5px;margin-bottom:8px}
.testimonial-head p{color:var(--c-text-2);font-size:14.5px;line-height:1.7}
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.testimonial{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:24px 22px;transition:border-color .15s}
.testimonial:hover{border-color:var(--c-border-2)}
.testimonial-quote{font-size:14.5px;line-height:1.85;color:var(--c-text);margin-bottom:14px}
.testimonial-quote::before{content:""}
.testimonial-author{font-size:13px;color:var(--c-text-3);padding-top:14px;border-top:1px solid var(--c-border)}
.testimonial-author .who{color:var(--c-text-2);font-weight:500}

/* ===== L6 试点招募 + 表单 ===== */
.pilot-section{padding:80px 0;background:#fff}
.pilot-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.pilot-img{overflow:hidden;border-radius:6px;min-height:480px;position:relative;background:#f3f4f6;border:1px solid var(--c-border)}
.pilot-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.pilot-img .badge{position:absolute;left:16px;bottom:16px;background:#fff;padding:12px 16px;border-radius:6px;border:1px solid var(--c-border)}
.pilot-img .badge .t1{font-size:12px;color:var(--c-text-3);margin-bottom:3px;line-height:1.3}
.pilot-img .badge .t2{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.3}
.form-card{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:32px}
.form-card h3{font-size:22px;font-weight:700;color:var(--c-text);margin-bottom:6px;letter-spacing:.5px}
.form-card .form-sub{color:var(--c-text-2);font-size:14px;margin-bottom:22px;line-height:1.7}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.form-field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.form-field label{font-size:13px;font-weight:500;color:var(--c-text-2);line-height:1.4}
.form-field label .req{color:#DC2626}
.form-field input,.form-field textarea,.form-field select{padding:10px 12px;background:#fff;border:1px solid var(--c-border-2);border-radius:6px;font-size:14px;transition:border-color .15s;width:100%;line-height:1.5}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{border-color:var(--c-primary)}
.form-field textarea{resize:vertical;min-height:80px;font-family:inherit}
.form-field.full{grid-column:1/-1}
.form-card .btn{width:100%;padding:12px;font-size:14px;margin-top:6px}
.form-note{text-align:left;font-size:12.5px;color:var(--c-text-3);margin-top:12px}
.form-note a{color:var(--c-primary);font-weight:500}

/* ===== Footer ===== */
.footer{background:#0b1220;color:#cbd5e1;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:32px;margin-bottom:36px}
.footer-col h5{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.5px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{color:#94a3b8;font-size:13px;transition:color .15s;line-height:1.6}
.footer-col ul a:hover{color:#fff}
.footer-contact .email{color:#fff;font-size:13.5px;font-weight:500;margin-bottom:12px;word-break:break-all}
.qr-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.qr-item{text-align:center}
.qr-item svg{width:64px;height:64px;border-radius:4px;background:#fff;padding:3px;display:block;margin:0 auto 4px}
.qr-item span{font-size:11px;color:#94a3b8;line-height:1.4;display:block}
.footer-meta{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12.5px;color:#94a3b8;line-height:1.6}
.footer-meta a{color:#60A5FA}
.footer-meta a:hover{color:#fff}

/* ===== Floating Actions（无 SVG,纯文字按钮）===== */
.float-chat{position:fixed;left:20px;bottom:20px;z-index:90}
.float-msg-popup{position:absolute;left:0;bottom:54px;width:280px;background:#fff;border-radius:6px;border:1px solid var(--c-border);padding:16px;display:none}
.float-msg-popup.open{display:block}
.float-msg-popup h6{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:4px;line-height:1.4}
.float-msg-popup p{font-size:12px;color:var(--c-text-3);margin-bottom:10px;line-height:1.6}
.float-msg-popup input,.float-msg-popup textarea{width:100%;padding:8px 10px;border:1px solid var(--c-border-2);border-radius:4px;font-size:12.5px;margin-bottom:8px;background:#fff;line-height:1.5}
.float-msg-popup textarea{resize:vertical;min-height:50px}
.float-msg-popup .btn{padding:9px;font-size:12.5px;width:100%}
.float-item{display:inline-flex;align-items:center;gap:8px;cursor:pointer;background:#fff;padding:7px 14px 7px 10px;border-radius:6px;border:1px solid var(--c-border-2);transition:border-color .15s;line-height:1.3}
.float-item:hover{border-color:var(--c-primary)}
.float-icon{width:28px;height:28px;border-radius:4px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0}
.float-label{font-size:13px;font-weight:500;color:var(--c-text)}

.float-actions{position:fixed;right:20px;bottom:20px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-circle{width:48px;height:48px;border-radius:6px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s;position:relative;font-size:12px;font-weight:500;line-height:1.2;text-align:center;padding:4px}
.float-circle:hover{background:var(--c-primary-hover)}
.float-circle .tip{position:absolute;right:56px;top:50%;transform:translateY(-50%);background:#171717;color:#fff;padding:4px 9px;border-radius:4px;font-size:12px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s}
.float-circle:hover .tip{opacity:1}

/* ===== Responsive（1024 / 640 / 480 / 360）===== */
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .nav-menu{position:absolute;top:60px;left:0;right:0;flex-direction:column;align-items:stretch;background:#0b1220;padding:10px 0 16px;border-bottom:1px solid rgba(255,255,255,.1);box-shadow:0 12px 24px rgba(0,0,0,.3);display:none;z-index:99}
  .nav-menu.open{display:flex}
  .nav-menu li{width:100%}
  .nav-menu a{display:block;padding:14px 24px;font-size:15px;color:#e2e8f0;white-space:normal}
  .nav-menu a.active{background:rgba(59,130,246,.14)}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:120px 28px 56px}
  .hero-card{max-width:100%}
  .split,.biz-panel.active,.hardware-grid,.pilot-grid{grid-template-columns:1fr;gap:32px}
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .testimonial-grid{grid-template-columns:1fr}
  .hw-bottom{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .hero-title{font-size:30px}
  .section-title,.manifesto-title{font-size:24px}
  .pilot-img{min-height:340px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .hero{min-height:100svh}
  .hero-inner{padding:100px 16px 44px;gap:20px}
  .hero-card{padding:22px 18px;max-width:100%}
  .hero-title{font-size:22px}
  .hero-sub{font-size:14px;margin-bottom:22px}
  .hero-ctas .btn{flex:1;justify-content:center;min-height:46px}
  .manifesto{padding:56px 0 44px}
  .hardware,.biz-section,.pricing-section,.story-section{padding:56px 0}
  .not-do,.flow-section,.compare-section,.about-section,.faq-section,.suggest-section,.diff-section{padding:48px 0}
  .split-content h3,.biz-content h3{font-size:20px}
  .price-card{padding:20px 16px}
  .price-amt .num{font-size:28px}
  .form-card{padding:24px}
  .form-row{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-meta{flex-direction:column;align-items:flex-start;text-align:left}
  .float-chat{left:12px;bottom:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px))}
  .float-actions{right:12px;bottom:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px))}
  .float-circle{width:44px;height:44px}
  .topnav-inner{padding:0 14px}
  .nav-cta .btn{padding:6px 12px;font-size:12px}
  .biz-points{grid-template-columns:1fr}
  .qr-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .qr-item svg{width:64px;height:64px}
  .manifesto-title{font-size:22px}
  .section-title{font-size:22px}
  .compare-section{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .compare-table{min-width:600px}
  .pilot-img{min-height:300px}
  .diff-item{padding:18px 16px}
}
@media (max-width:480px){
  .hw-bottom{grid-template-columns:1fr}
  .pricing-grid{gap:10px}
  .hero-title{font-size:20px}
  .flow-step{padding:20px 16px}
  .story,.testimonial{padding:18px 16px}
}
@media (max-width:360px){
  .hero-ctas{flex-direction:column}
  .hero-ctas .btn{width:100%}
  .price-amt .num{font-size:26px}
  .float-msg-popup{width:calc(100vw - 48px)}
  .brand-text span{display:none}
}

/* ===== L1.5 我们不做什么 + 公司一句话 ===== */
.not-do{background:#fff;padding:64px 0;border-top:1px solid var(--c-border)}
.not-do-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start}
.not-do h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:14px;letter-spacing:.5px}
.not-do p{color:var(--c-text-2);font-size:15px;line-height:1.8;margin-bottom:14px}
.not-list{list-style:none;margin-top:18px;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.not-list li{font-size:14px;color:var(--c-text);line-height:1.7;padding-left:20px;position:relative}
.not-list li::before{content:"×";position:absolute;left:0;top:0;color:#9ca3af;font-weight:600;font-size:15px;line-height:1.7}
.not-list .do{color:var(--c-text)}
.not-list .do::before{content:"·";color:var(--c-primary);font-size:24px;line-height:1.1;top:6px}
.company-side{background:var(--c-bg-soft);border:1px solid var(--c-border);border-radius:6px;padding:24px 22px}
.company-side h3{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:12px;line-height:1.4}
.company-side p{color:var(--c-text-2);font-size:14px;line-height:1.85;margin-bottom:10px}
.company-side .line{padding:9px 0;border-bottom:1px dashed var(--c-border);font-size:13.5px;color:var(--c-text-2);line-height:1.6}
.company-side .line:last-child{border-bottom:none}
.company-side .line b{color:var(--c-text);font-weight:600;display:inline-block;min-width:64px}

/* ===== L3.5 具体怎么做(流程) ===== */
.flow-section{background:var(--c-bg-soft);padding:80px 0;border-top:1px solid var(--c-border)}
.flow-section .section-head{margin-bottom:36px}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--c-border);border-radius:6px;overflow:hidden;background:#fff}
.flow-step{padding:24px 22px;border-right:1px solid var(--c-border);position:relative}
.flow-step:last-child{border-right:none}
.flow-step .num{font-size:12px;color:var(--c-primary);font-weight:600;margin-bottom:8px;letter-spacing:.5px;display:block}
.flow-step h4{font-size:15.5px;font-weight:600;color:var(--c-text);margin-bottom:8px;line-height:1.4}
.flow-step p{font-size:13.5px;color:var(--c-text-2);line-height:1.75}
.flow-step .duration{font-size:12.5px;color:var(--c-text-3);margin-top:10px;display:block}

/* ===== L4.5 试点故事 ===== */
.story-section{background:#fff;padding:80px 0;border-top:1px solid var(--c-border)}
.story-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.story{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:22px 20px;display:flex;flex-direction:column;gap:10px}
.story .where{font-size:12.5px;color:var(--c-text-3);line-height:1.4}
.story .where b{color:var(--c-text-2);font-weight:500;margin-right:6px}
.story .body{font-size:14px;color:var(--c-text-2);line-height:1.85;flex:1}
.story .result{font-size:13px;color:var(--c-primary);font-weight:500;line-height:1.6;border-top:1px dashed var(--c-border);padding-top:10px}

/* ===== L5.5 5 档详细对比表 ===== */
.compare-section{background:var(--c-bg-soft);padding:64px 0}
.compare-section h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:12px;letter-spacing:.5px}
.compare-section .lead{color:var(--c-text-2);font-size:14.5px;line-height:1.75;margin-bottom:24px;max-width:680px}
.compare-table{background:#fff;border:1px solid var(--c-border);border-radius:6px;overflow:hidden;width:100%;border-collapse:collapse}
.compare-table th,.compare-table td{padding:12px 14px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--c-border);line-height:1.6}
.compare-table th{background:var(--c-bg-soft);font-weight:600;color:var(--c-text);font-size:13px}
.compare-table td{color:var(--c-text-2)}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .col-feature{width:22%;color:var(--c-text);font-weight:500}
.compare-table .col-y{color:var(--c-primary);font-weight:500}
.compare-table .col-n{color:var(--c-text-3)}

/* ===== 关于我们段 ===== */
.about-section{background:#fff;padding:64px 0;border-top:1px solid var(--c-border)}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start}
.about-grid h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:14px;letter-spacing:.5px}
.about-grid p{color:var(--c-text-2);font-size:15px;line-height:1.85;margin-bottom:12px}
.about-grid p b{color:var(--c-text);font-weight:600}
.about-side{border-left:3px solid var(--c-primary);padding-left:20px}
.about-side .line{margin-bottom:14px}
.about-side .line .k{font-size:13px;color:var(--c-text-3);display:block;line-height:1.4;margin-bottom:2px}
.about-side .line .v{font-size:15px;color:var(--c-text);font-weight:500;line-height:1.5}

@media (max-width:1024px){
  .not-do-grid,.about-grid{grid-template-columns:1fr;gap:28px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-right:none;border-bottom:1px solid var(--c-border)}
  .story-list{grid-template-columns:1fr}
}
@media (max-width:640px){
  .not-list{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .company-side{padding:20px 18px}
  .compare-table{font-size:12.5px}
  .compare-table th,.compare-table td{padding:9px 10px}
}

/* ===== FAQ 段 ===== */
.faq-section{background:#fff;padding:64px 0;border-top:1px solid var(--c-border)}
.faq-section h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:12px;letter-spacing:.5px}
.faq-section .lead{color:var(--c-text-2);font-size:14.5px;line-height:1.75;margin-bottom:32px;max-width:680px}
.faq-list{border-top:1px solid var(--c-border)}
.faq-item{border-bottom:1px solid var(--c-border);padding:20px 0}
.faq-item summary{font-size:15.5px;font-weight:600;color:var(--c-text);line-height:1.5;display:flex;gap:10px;align-items:flex-start;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q{color:var(--c-primary);font-weight:600;flex-shrink:0}
.faq-item summary::after{content:'+';margin-left:auto;color:var(--c-primary);font-size:18px;font-weight:500;line-height:1.2;flex-shrink:0;transition:transform .2s ease}
.faq-item[open] summary::after{content:'−'}
.faq-item p{color:var(--c-text-2);font-size:14.5px;line-height:1.85;padding-left:24px;margin-top:10px}
.faq-item p b{color:var(--c-text);font-weight:500}

/* ===== 硬件选配建议 ===== */
.suggest-section{background:#fff;padding:64px 0;border-top:1px solid var(--c-border)}
.suggest-section h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:12px;letter-spacing:.5px}
.suggest-section .lead{color:var(--c-text-2);font-size:14.5px;line-height:1.75;margin-bottom:24px;max-width:680px}
.suggest-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.suggest-card{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:20px 22px}
.suggest-card .who{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:6px;line-height:1.4}
.suggest-card .what{font-size:12.5px;color:var(--c-text-3);margin-bottom:10px;line-height:1.5}
.suggest-card .pick{font-size:13.5px;color:var(--c-text-2);line-height:1.7}
.suggest-card .pick b{color:var(--c-primary);font-weight:500}
.suggest-card .price{font-size:12.5px;color:var(--c-text-3);margin-top:10px;padding-top:10px;border-top:1px dashed var(--c-border);line-height:1.5}

/* ===== 差异案例分析 ===== */
.diff-section{background:var(--c-bg-soft);padding:64px 0;border-top:1px solid var(--c-border)}
.diff-section h2{font-size:24px;font-weight:700;color:var(--c-text);line-height:1.45;margin-bottom:12px;letter-spacing:.5px}
.diff-section .lead{color:var(--c-text-2);font-size:14.5px;line-height:1.75;margin-bottom:28px;max-width:680px}
.diff-list{display:flex;flex-direction:column;gap:14px}
.diff-item{background:#fff;border:1px solid var(--c-border);border-radius:6px;padding:24px 26px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;align-items:center}
.diff-item .col{}
.diff-item .label{font-size:12px;color:var(--c-text-3);margin-bottom:6px;letter-spacing:.5px;line-height:1.4}
.diff-item .num{font-size:20px;font-weight:700;color:var(--c-text);line-height:1.3}
.diff-item .num.red{color:#DC2626}
.diff-item .desc{font-size:13px;color:var(--c-text-2);line-height:1.7;margin-top:8px}
.diff-item .ratio{font-size:18px;font-weight:700;color:#DC2626;line-height:1.3}

@media (max-width:1024px){
  .suggest-grid{grid-template-columns:1fr}
  .diff-item{grid-template-columns:1fr;gap:14px}
}