/* ========== Reset & Base ========== */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:#f5f7fa;color:#333;font-size:16px;line-height:1.8}
a{color:#e04040;text-decoration:none}
a:hover{text-decoration:underline}
code{background:#f0f0f0;padding:2px 6px;border-radius:3px;font-size:14px}

/* ========== Navbar ========== */
.navbar{background:linear-gradient(135deg,#e04040 0%,#c53030 100%);padding:0 32px;height:60px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 12px rgba(192,40,40,.25);position:sticky;top:0;z-index:100}
.nav-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;text-decoration:none;white-space:nowrap}
.nav-brand img{height:32px;width:auto}
.nav-brand:hover{text-decoration:none}
.nav-brand span{opacity:.5;font-size:13px;font-weight:400}
.nav-center{display:flex;gap:4px}
.nav-center a{color:rgba(255,255,255,.78);padding:6px 16px;border-radius:6px;font-size:15px;transition:all .15s;text-decoration:none;white-space:nowrap}
.nav-center a:hover,.nav-center a.active{background:rgba(255,255,255,.15);color:#fff;text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:8px}
.nav-btn{padding:6px 16px;border-radius:6px;font-size:14px;font-weight:500;text-decoration:none;transition:all .15s;border:1.5px solid rgba(255,255,255,.4);color:rgba(255,255,255,.9);background:transparent}
.nav-btn:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none;border-color:rgba(255,255,255,.7)}
.nav-btn-primary{background:rgba(255,255,255,.95);color:#e04040;border-color:transparent;font-weight:600}
.nav-btn-primary:hover{background:#fff;transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,.15);text-decoration:none}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer;padding:4px 8px;line-height:1}

/* ========== Hero ========== */
.hero{background:linear-gradient(135deg,#e04040 0%,#a02020 100%);color:#fff;text-align:center;padding:64px 24px 56px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-30%;width:160%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.06),transparent 60%);pointer-events:none}
.hero h1{font-size:38px;font-weight:800;margin-bottom:14px;letter-spacing:1px}
.hero>p{font-size:18px;opacity:.85;max-width:620px;margin:0 auto 30px}
.hero-buttons{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-btn{display:inline-flex;align-items:center;gap:6px;padding:13px 34px;background:#fff;color:#e04040;border-radius:8px;font-size:16px;font-weight:600;transition:all .2s;text-decoration:none}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.2);text-decoration:none}
.hero-btn-secondary{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5);font-weight:500}
.hero-btn-secondary:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
.hero-badges{display:flex;justify-content:center;gap:24px;flex-wrap:wrap}
.hero-badge{display:flex;align-items:center;gap:6px;font-size:14px;color:rgba(255,255,255,.8)}
.hero-badge span:first-child{font-size:18px}

/* ========== Containers & Sections ========== */
.container{max-width:960px;margin:0 auto;padding:40px 24px 60px}
.container-wide{max-width:1100px;margin:0 auto;padding:48px 24px}
.section-heading{text-align:center;font-size:28px;font-weight:700;color:#222;margin-bottom:8px}
.section-sub{text-align:center;font-size:16px;color:#888;margin-bottom:36px}
.page-title{font-size:28px;font-weight:700;margin-bottom:8px;color:#222}
.page-subtitle{font-size:16px;color:#888;margin-bottom:32px}

/* ========== Feature Bar ========== */
.feature-bar{background:#fff;border-bottom:1px solid #eee;padding:16px 24px;display:flex;justify-content:center;gap:32px;flex-wrap:wrap}
.feature-bar-item{display:flex;flex-direction:column;align-items:center;gap:6px;text-decoration:none;color:#555;transition:all .15s;cursor:pointer}
.feature-bar-item:hover{color:#e04040;text-decoration:none;transform:translateY(-2px)}
.feature-bar-icon{width:48px;height:48px;border-radius:12px;background:#fef2f2;display:flex;align-items:center;justify-content:center;font-size:24px;transition:all .15s}
.feature-bar-item:hover .feature-bar-icon{background:#e04040;filter:none}
.feature-bar-item:hover .feature-bar-icon{background:linear-gradient(135deg,#e04040,#c53030);box-shadow:0 4px 12px rgba(224,64,64,.25)}
.feature-bar-label{font-size:14px;font-weight:500}

/* ========== Steps Row (How it works) ========== */
.steps-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:24px}
.step-card{background:#fff;border-radius:12px;padding:32px 24px;text-align:center;border:1px solid #eee;box-shadow:0 1px 4px rgba(0,0,0,.04);transition:all .2s;position:relative}
.step-card:hover{transform:translateY(-3px);box-shadow:0 6px 16px rgba(0,0,0,.08)}
.step-number{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#e04040,#c53030);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;margin:0 auto 14px}
.step-icon{font-size:32px;margin-bottom:10px}
.step-card h4{font-size:16px;font-weight:600;color:#222;margin-bottom:6px}
.step-card p{font-size:14px;color:#666;margin:0;line-height:1.6}
.step-link{text-align:center;margin-top:8px}
.step-link a{font-size:14px;color:#e04040;text-decoration:none}
.step-link a:hover{text-decoration:underline}

/* ========== Feature Grid ========== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px}
.feature-card{background:#fff;border-radius:12px;padding:24px;border:1px solid #eee;box-shadow:0 1px 3px rgba(0,0,0,.04);transition:all .2s}
.feature-card:hover{border-color:#e04040;transform:translateY(-3px);box-shadow:0 6px 16px rgba(224,64,64,.1)}
.feature-card-icon{font-size:32px;margin-bottom:10px}
.feature-card h4{font-size:16px;font-weight:600;color:#222;margin-bottom:6px}
.feature-card p{font-size:14px;color:#666;margin:0;line-height:1.6}

/* ========== Trust Grid ========== */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}
.trust-card{background:#fff;border-radius:12px;padding:28px 20px;text-align:center;border:1px solid #eee;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.trust-card-icon{font-size:36px;margin-bottom:10px}
.trust-card h4{font-size:16px;font-weight:600;color:#222;margin-bottom:6px}
.trust-card p{font-size:14px;color:#666;margin:0}

/* ========== CTA Banner ========== */
.cta-banner{background:linear-gradient(135deg,#e04040 0%,#a02020 100%);color:#fff;text-align:center;padding:48px 24px;margin-top:48px;border-radius:16px}
.cta-banner h2{font-size:26px;font-weight:700;margin-bottom:10px}
.cta-banner p{font-size:16px;opacity:.85;margin-bottom:24px}
.cta-btn{display:inline-block;padding:13px 40px;background:#fff;color:#e04040;border-radius:8px;font-size:16px;font-weight:600;text-decoration:none;transition:all .2s}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.2);text-decoration:none}

/* ========== Cards ========== */
.card{background:#fff;border-radius:12px;padding:28px 32px;margin-bottom:24px;box-shadow:0 1px 4px rgba(0,0,0,.06);border:1px solid #eee}
.card h3{font-size:18px;font-weight:700;margin-bottom:12px;color:#222}
.card p{margin-bottom:10px;color:#555}

/* ========== Pricing Cards ========== */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.pricing-card{background:#fff;border:2px solid #eee;border-radius:14px;padding:28px 20px;text-align:center;transition:all .2s;display:flex;flex-direction:column}
.pricing-card:hover{border-color:#e04040;transform:translateY(-4px);box-shadow:0 8px 24px rgba(224,64,64,.12)}
.pricing-card.popular{border-color:#e04040;position:relative;box-shadow:0 4px 16px rgba(224,64,64,.15)}
.pricing-card.popular::before{content:'推荐';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#e04040,#c53030);color:#fff;padding:3px 18px;border-radius:12px;font-size:12px;font-weight:600;letter-spacing:1px}
.pricing-tier{font-size:13px;color:#999;margin-bottom:4px;text-transform:uppercase;letter-spacing:1px}
.pricing-name{font-size:22px;font-weight:700;margin-bottom:12px;color:#222}
.original-price{font-size:14px;color:#bbb;text-decoration:line-through;margin-bottom:2px}
.pricing-price{font-size:36px;font-weight:800;color:#e04040;margin-bottom:6px;line-height:1.2}
.pricing-price small{font-size:14px;color:#999;font-weight:400}
.pricing-features{list-style:none;text-align:left;margin:16px 0;font-size:14px;color:#555;flex:1}
.pricing-features li{padding:6px 0;border-bottom:1px solid #f5f5f5;display:flex;align-items:center;gap:6px}
.pricing-features li::before{content:'✓';color:#52c41a;font-weight:700;font-size:14px}
.pricing-features li.disabled{color:#ccc}
.pricing-features li.disabled::before{content:'✗';color:#ddd}
.pricing-btn{display:block;width:100%;padding:10px;border:2px solid #e04040;background:transparent;color:#e04040;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .15s;text-decoration:none;text-align:center;margin-top:auto}
.pricing-btn:hover{background:#fef2f2;text-decoration:none}
.pricing-btn-primary{background:#e04040;color:#fff;border-color:#e04040}
.pricing-btn-primary:hover{background:#c53030;border-color:#c53030;color:#fff}

/* ========== Comparison Table ========== */
.table-wrapper{overflow-x:auto;margin-bottom:36px;border-radius:12px;border:1px solid #eee;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.comparison-table{width:100%;border-collapse:collapse;min-width:640px;background:#fff}
.comparison-table th{background:linear-gradient(135deg,#e04040,#c53030);color:#fff;padding:12px 16px;font-size:14px;font-weight:600;text-align:center;white-space:nowrap;position:sticky;top:0}
.comparison-table th:first-child{text-align:left;min-width:160px;background:#c53030}
.comparison-table td{padding:10px 16px;font-size:14px;border-bottom:1px solid #f0f0f0;text-align:center;white-space:nowrap}
.comparison-table td:first-child{text-align:left;font-weight:500;color:#333;background:#fafafa;position:sticky;left:0}
.comparison-table tr:last-child td{border-bottom:none}
.comparison-table tr:hover td{background:#fef9f9}
.comparison-table tr:hover td:first-child{background:#fef2f2}
.comparison-table .group-row td{background:#f8f9fa;font-weight:600;color:#222;font-size:13px;padding:8px 16px}
.check{color:#52c41a;font-weight:700}
.cross{color:#ddd}
.val{color:#e04040;font-weight:600}

/* ========== Steps (guide page) ========== */
.steps{counter-reset:step}
.step-item{position:relative;padding:20px 24px 20px 64px;background:#fff;border-radius:10px;margin-bottom:14px;border:1px solid #eee;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.step-item::before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:20px;width:32px;height:32px;background:#e04040;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.step-item h4{font-size:15px;font-weight:600;margin-bottom:4px;color:#222}
.step-item p{font-size:14px;color:#666;margin:0}

/* ========== Guide Section (text + video) ========== */
.guide-section{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;margin-bottom:32px;background:#fff;border-radius:12px;padding:32px;border:1px solid #eee;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.guide-content h3{font-size:18px;font-weight:700;color:#222;margin-bottom:14px}
.guide-content p{font-size:15px;color:#555;margin-bottom:10px;line-height:1.8}
.guide-tip{background:#fffbe6;border:1px solid #ffe58f;border-radius:8px;padding:10px 14px;font-size:14px;color:#8c6e00;margin-top:12px}
.download-btns{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap}
.download-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;background:#e04040;color:#fff;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;transition:all .2s}
.download-btn:hover{background:#c53030;transform:translateY(-2px);box-shadow:0 4px 12px rgba(224,64,64,.25)}
.download-btn-alt{background:#fff;color:#e04040;border:2px solid #e04040}
.download-btn-alt:hover{background:#fef2f2}
.download-link{color:#e04040;font-weight:600;text-decoration:none}
.download-link:hover{text-decoration:underline}
.guide-video{display:flex;align-items:center;justify-content:center}
.guide-video video{width:100%;max-width:100%;border-radius:12px;background:#000;aspect-ratio:16/9;object-fit:contain;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.video-placeholder{width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,#1a1a2e,#16213e);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:rgba(255,255,255,.6);cursor:pointer;transition:all .2s;position:relative;overflow:hidden}
.video-placeholder:hover{box-shadow:0 4px 16px rgba(0,0,0,.2);transform:translateY(-2px)}
.video-icon{width:56px;height:56px;border-radius:50%;background:rgba(224,64,64,.9);display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;margin-bottom:10px;transition:all .2s}
.video-placeholder:hover .video-icon{background:#e04040;transform:scale(1.1)}
.video-placeholder p{font-size:13px;margin:0}

/* ========== TOC (guide page) ========== */
.toc{background:#fff;border:1px solid #eee;border-radius:12px;padding:24px 28px;margin-bottom:32px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.toc h3{font-size:16px;font-weight:600;color:#222;margin-bottom:14px}
.toc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px}
.toc a{display:block;padding:8px 14px;border-radius:6px;background:#fafafa;color:#555;font-size:13px;text-decoration:none;transition:all .12s;border:1px solid #f0f0f0}
.toc a:hover{background:#fef2f2;color:#e04040;border-color:#e04040;text-decoration:none}

/* ========== FAQ ========== */
.faq-item{background:#fff;border:1px solid #eee;border-radius:10px;padding:20px 24px;margin-bottom:12px}
.faq-item h4{font-size:16px;font-weight:600;color:#222;margin-bottom:6px}
.faq-item h4::before{content:'Q: ';color:#e04040}
.faq-item p{font-size:15px;color:#666;margin:0}
.faq-item p::before{content:'A: ';color:#52c41a;font-weight:600}

/* ========== Contact ========== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.contact-card{background:#fff;border:1px solid #eee;border-radius:12px;padding:28px;text-align:center;transition:all .15s}
.contact-card:hover{border-color:#e04040;box-shadow:0 4px 12px rgba(224,64,64,.08)}
.contact-icon{font-size:36px;margin-bottom:10px}
.contact-card h4{font-size:16px;font-weight:600;margin-bottom:6px;color:#222}
.contact-card p{font-size:14px;color:#666;margin:0}
.qq-btn{display:inline-block;padding:10px 28px;background:#12b7f5;color:#fff;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;transition:all .2s}
.qq-btn:hover{background:#0ea2db;text-decoration:none;transform:translateY(-1px);box-shadow:0 4px 12px rgba(18,183,245,.3);color:#fff}
.qr-placeholder{width:160px;height:160px;margin:0 auto;background:#f5f5f5;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#999;font-size:13px;border:2px dashed #ddd;overflow:hidden}
.qr-placeholder img{width:100%;height:100%;object-fit:cover;border-radius:8px}

/* ========== Privacy ========== */
.policy-section{margin-bottom:28px}
.policy-section h3{font-size:17px;font-weight:600;color:#222;margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid #f0f0f0}
.policy-section p,.policy-section ul{font-size:15px;color:#555;margin-bottom:8px}
.policy-section ul{padding-left:20px}
.policy-section li{margin-bottom:4px}

/* ========== Footer ========== */
.footer{background:#1e1e1e;color:rgba(255,255,255,.55);margin-top:48px;padding:40px 24px 24px;font-size:14px}
.footer a{color:rgba(255,255,255,.75);text-decoration:none}
.footer a:hover{color:#fff;text-decoration:none}
.footer-inner{max-width:960px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-col h4{color:rgba(255,255,255,.9);font-size:14px;font-weight:600;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col li a{font-size:14px}
.footer-col p{font-size:14px;margin-bottom:6px}
.footer-bottom{text-align:center;color:rgba(255,255,255,.35);font-size:12px}
/* Footer QR hover */
.footer-qr-wrap{position:relative;display:inline-block}
.footer-qr-wrap:hover .footer-qr-popup{display:block}
.footer-qr-popup{display:none;position:absolute;bottom:calc(100% + 10px);left:50%;transform:translateX(-50%);background:#fff;border-radius:10px;padding:10px;box-shadow:0 8px 28px rgba(0,0,0,.35);z-index:10}
.footer-qr-popup::after{content:'';position:absolute;top:100%;left:50%;transform:translateX(-50%);border:7px solid transparent;border-top-color:#fff}
.footer-qr-popup img{width:130px;height:130px;display:block;border-radius:6px}
.footer-qr-label{display:block;text-align:center;font-size:11px;color:#999;margin-top:4px}

/* ========== Export Demo ========== */
.export-demo{background:#fff;border-radius:12px;padding:32px;border:1px solid #eee;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.export-demo-info{text-align:center}
.export-demo-fields{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:20px}
.export-field{display:inline-block;padding:5px 14px;background:#fef2f2;color:#c53030;border-radius:6px;font-size:13px;font-weight:500;border:1px solid #fecaca}
.export-field-more{display:inline-block;padding:5px 14px;background:#f5f5f5;color:#999;border-radius:6px;font-size:13px;font-weight:500;border:1px solid #eee}
.export-demo-desc{font-size:15px;color:#666;margin:0 0 20px;line-height:1.8}

/* ========== Cases Page ========== */
.cases-hero{background:linear-gradient(135deg,#e04040 0%,#a02020 100%);color:#fff;text-align:center;padding:56px 24px 48px;position:relative;overflow:hidden}
.cases-hero::before{content:'';position:absolute;top:-50%;left:-30%;width:160%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.06),transparent 60%);pointer-events:none}
.cases-hero h1{font-size:34px;font-weight:800;margin-bottom:10px}
.cases-hero p{font-size:17px;opacity:.85}
.cases-scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}
.cases-scene-card{background:#fff;border:1px solid #eee;border-radius:12px;padding:28px 20px;text-align:center;transition:all .2s}
.cases-scene-card:hover{border-color:#e04040;transform:translateY(-3px);box-shadow:0 6px 16px rgba(224,64,64,.1)}
.cases-scene-icon{font-size:36px;margin-bottom:10px}
.cases-scene-card h4{font-size:16px;font-weight:600;color:#222;margin-bottom:8px}
.cases-scene-card p{font-size:14px;color:#666;margin-bottom:14px;line-height:1.6}
.cases-scene-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.cases-scene-tags span{font-size:12px;padding:3px 10px;background:#fef2f2;color:#e04040;border-radius:4px}
.case-card{background:#fff;border:1px solid #eee;border-radius:12px;margin-bottom:20px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:all .2s}
.case-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.case-card-header{padding:20px 28px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;gap:14px}
.case-card-header h3{font-size:17px;font-weight:600;color:#222;margin:0}
.case-tag{display:inline-block;padding:3px 12px;border-radius:4px;font-size:12px;font-weight:600;background:#fef2f2;color:#e04040;white-space:nowrap}
.case-tag-blue{background:#e6f7ff;color:#1890ff}
.case-tag-green{background:#f6ffed;color:#52c41a}
.case-card-body{padding:24px 28px}
.case-card-body p{font-size:15px;color:#555;margin-bottom:10px;line-height:1.8}
.case-result{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px;padding-top:20px;border-top:1px solid #f0f0f0}
.case-result-item{text-align:center}
.case-result-num{font-size:28px;font-weight:800;color:#e04040;line-height:1.2}
.case-result-label{font-size:13px;color:#999;margin-top:4px}
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px}
.testimonial-card{background:#fff;border:1px solid #eee;border-radius:12px;padding:24px;transition:all .2s}
.testimonial-card:hover{border-color:#e04040;box-shadow:0 4px 12px rgba(224,64,64,.08)}
.testimonial-stars{color:#faad14;font-size:16px;margin-bottom:12px;letter-spacing:2px}
.testimonial-text{font-size:15px;color:#555;line-height:1.8;margin-bottom:16px;font-style:italic}
.testimonial-author strong{display:block;font-size:14px;color:#222}
.testimonial-author span{font-size:13px;color:#999}

/* ========== Responsive ========== */
@media(max-width:900px){
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .cases-scene-grid{grid-template-columns:repeat(2,1fr)}
  .testimonial-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .navbar{padding:0 16px}
  .nav-center,.nav-actions{display:none}
  .nav-toggle{display:block}
  .navbar.nav-open{flex-wrap:wrap;height:auto;padding-bottom:12px}
  .navbar.nav-open .nav-center{display:flex;flex-direction:column;width:100%;gap:2px;order:3;margin-top:8px}
  .navbar.nav-open .nav-center a{padding:10px 16px;font-size:16px}
  .navbar.nav-open .nav-actions{display:flex;width:100%;order:4;margin-top:8px;justify-content:center;gap:12px}
  .navbar.nav-open .nav-btn{padding:10px 24px;font-size:15px}
  .navbar.nav-open .nav-user-info{width:100%;justify-content:center;padding:8px 16px;border-radius:8px}
  .hero h1{font-size:24px}
  .hero>p{font-size:16px}
  .hero{padding:36px 16px 32px}
  .hero-btn{padding:11px 24px;font-size:15px}
  .steps-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:20px}
  .container,.container-wide{padding:24px 16px 36px}
  .section-heading{font-size:22px}
  .section-sub{font-size:14px;margin-bottom:24px}
  .page-title{font-size:22px}
  .guide-section{grid-template-columns:1fr;padding:20px}
  .guide-content h3{font-size:17px}
  .card{padding:20px}
  .card h3{font-size:16px}
  .contact-grid{grid-template-columns:1fr}
  .qr-placeholder{width:140px;height:140px}
  .comparison-table th,.comparison-table td{padding:8px 10px;font-size:13px}
  .cta-banner{padding:32px 20px;margin-top:32px;border-radius:12px}
  .cta-banner h2{font-size:20px}
  .cta-banner p{font-size:14px}
  .cta-btn{padding:11px 28px;font-size:15px}
  .faq-item{padding:16px 18px}
  .faq-item h4{font-size:15px}
  .cases-hero h1{font-size:24px}
  .cases-hero{padding:36px 16px 32px}
  .case-card-header{flex-direction:column;align-items:flex-start;gap:8px;padding:16px 20px}
  .case-card-body{padding:16px 20px}
  .case-result{grid-template-columns:repeat(3,1fr);gap:12px}
  .case-result-num{font-size:22px}
  .testimonial-grid{grid-template-columns:1fr}
  .export-demo{padding:20px}
  .footer-qr-popup{left:0;transform:none}
  .footer-qr-popup::after{left:24px;transform:none}
}
@media(max-width:480px){
  .pricing-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr}
  .feature-bar{gap:12px;padding:12px 16px}
  .feature-bar-icon{width:40px;height:40px;font-size:20px}
  .feature-bar-label{font-size:12px}
  .hero h1{font-size:20px}
  .hero-buttons{flex-direction:column;align-items:center}
  .hero-badges{flex-direction:column;align-items:center;gap:8px}
  .pricing-card{padding:20px 16px}
  .pricing-name{font-size:20px}
  .pricing-price{font-size:30px}
  .step-card{padding:24px 16px}
  .trust-card{padding:20px 16px}
  .cases-scene-grid{grid-template-columns:1fr}
}