:root{
  --color-primary:#FF6A3D;
  --color-primary-dark:#E4552A;
  --color-navy:#1A2B4C;
  --color-navy-light:#2C4270;
  --color-bg:#FFFFFF;
  --color-bg-soft:#F7F8FB;
  --color-border:#E7E9EF;
  --color-text:#1A1F2B;
  --color-text-soft:#5B6472;
  --radius:14px;
  --shadow:0 8px 24px rgba(26,43,76,0.08);
  --container:1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  color:var(--color-text);
  background:var(--color-bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* Topbar */
.topbar{
  background:var(--color-navy);
  color:#fff;
  text-align:center;
  font-size:13px;
  padding:8px 16px;
  letter-spacing:.2px;
}
.topbar strong{color:var(--color-primary);}

/* Header */
.header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--color-border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--color-navy);}
.logo img{width:32px;height:32px;object-fit:contain;}
.nav{display:flex;gap:28px;}
.nav a{font-size:15px;font-weight:500;color:var(--color-text-soft);transition:color .2s;}
.nav a:hover{color:var(--color-primary);}
.header-actions{display:flex;align-items:center;gap:14px;}
.lang-switch{
  border:1px solid var(--color-border);
  border-radius:8px;
  padding:6px 10px;
  font-size:14px;
  background:#fff;
  color:var(--color-text-soft);
}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.nav-toggle span{width:22px;height:2px;background:var(--color-navy);display:block;}

/* Auth area (login/user menu) */
.auth-area{position:relative;}
.user-menu{position:relative;}
.user-chip{
  display:flex;align-items:center;gap:8px;
  background:var(--color-bg-soft);
  border:1px solid var(--color-border);
  border-radius:999px;
  padding:6px 14px 6px 8px;
  cursor:pointer;
  font-size:14px;font-weight:600;color:var(--color-navy);
}
.user-avatar{
  width:26px;height:26px;border-radius:50%;
  background:var(--color-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.user-dropdown{
  position:absolute;top:calc(100% + 8px);right:0;
  background:#fff;border:1px solid var(--color-border);
  border-radius:12px;box-shadow:var(--shadow);
  min-width:180px;padding:8px;display:none;z-index:50;
}
.user-dropdown.open{display:block;}
.user-dropdown a, .user-dropdown button{
  display:block;width:100%;text-align:left;
  padding:10px 12px;border-radius:8px;
  font-size:14px;color:var(--color-text);
  border:none;background:none;cursor:pointer;font-family:inherit;
}
.user-dropdown a:hover, .user-dropdown button:hover{background:var(--color-bg-soft);}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:10px 20px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 6px 16px rgba(255,106,61,0.35);}
.btn-primary:hover{background:var(--color-primary-dark);}
.btn-ghost{background:transparent;color:var(--color-navy);border-color:var(--color-border);}
.btn-ghost:hover{border-color:var(--color-navy);}
.btn-outline{background:#fff;color:var(--color-navy);border:1.5px solid var(--color-navy);}
.btn-outline:hover{background:var(--color-navy);color:#fff;}
.btn-lg{padding:14px 28px;font-size:16px;}
.btn-block{width:100%;}

/* Hero */
.hero{
  background:linear-gradient(180deg,#FFF6F1 0%, #FFFFFF 100%);
  padding:64px 0 40px;
}
.hero-inner{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:40px;
  align-items:center;
}
.badge{
  display:inline-block;
  background:rgba(255,106,61,0.12);
  color:var(--color-primary-dark);
  font-size:13px;
  font-weight:700;
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:18px;
}
.hero-text h1{
  font-size:44px;
  line-height:1.25;
  margin:0 0 18px;
  color:var(--color-navy);
  font-weight:800;
}
.hero-text p{
  font-size:17px;
  color:var(--color-text-soft);
  max-width:520px;
  margin:0 0 28px;
}
.hero-actions{display:flex;gap:14px;margin-bottom:36px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;}
.hero-stats div{display:flex;flex-direction:column;}
.hero-stats strong{font-size:24px;color:var(--color-navy);font-weight:800;}
.hero-stats span{font-size:13px;color:var(--color-text-soft);}
.hero-image img{border-radius:var(--radius);}

/* Platforms */
.platforms{padding:28px 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);}
.platforms-title{text-align:center;font-size:13px;color:var(--color-text-soft);margin:0 0 16px;letter-spacing:.5px;text-transform:uppercase;}
.platforms-list{display:flex;justify-content:center;gap:36px;flex-wrap:wrap;}
.platforms-list span{font-weight:700;color:var(--color-navy);font-size:16px;opacity:.75;}

/* Section generic */
.section{padding:76px 0;}
.section-title{
  font-size:32px;
  font-weight:800;
  color:var(--color-navy);
  text-align:center;
  margin:0 0 12px;
}
.section-sub{
  text-align:center;
  color:var(--color-text-soft);
  font-size:16px;
  max-width:600px;
  margin:0 auto 48px;
}

/* Steps */
.how{background:var(--color-bg-soft);}
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:28px 22px;
  box-shadow:var(--shadow);
}
.step-num{
  font-size:28px;
  font-weight:800;
  color:var(--color-primary);
  margin-bottom:12px;
}
.step-card h3{margin:0 0 10px;font-size:18px;color:var(--color-navy);}
.step-card p{margin:0;font-size:14.5px;color:var(--color-text-soft);}

/* Categories */
.category-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.category-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:28px 16px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  font-weight:700;
  color:var(--color-navy);
  transition:box-shadow .2s, transform .2s;
}
.category-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.cat-icon{font-size:32px;}

/* Products */
.product-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.product-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
}
.product-thumb{
  aspect-ratio:1/1;
  background:var(--color-bg-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:40px;
}
.product-info{padding:14px 16px;}
.product-info h4{
  font-size:14px;
  font-weight:600;
  margin:0 0 8px;
  color:var(--color-text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  min-height:38px;
}
.product-price{color:var(--color-primary-dark);font-weight:800;font-size:16px;}
.products-more{text-align:center;margin-top:36px;}

/* Why */
.why-inner{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:48px;
  align-items:center;
}
.why-list li{
  padding:14px 0;
  border-bottom:1px solid var(--color-border);
  color:var(--color-text-soft);
  font-size:15.5px;
}
.why-list li strong{color:var(--color-navy);}
.why-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.why-card{
  background:var(--color-navy);
  color:#fff;
  border-radius:var(--radius);
  padding:26px 18px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.why-num{font-size:26px;font-weight:800;color:var(--color-primary);}
.why-card span:last-child{font-size:13.5px;color:#C9D2E3;}

/* Pricing */
.pricing{background:var(--color-bg-soft);}
.pricing-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.pricing-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:32px 26px;
  text-align:center;
  position:relative;
}
.pricing-card.featured{border-color:var(--color-primary);box-shadow:0 10px 30px rgba(255,106,61,0.18);}
.pricing-tag{
  position:absolute;
  top:-12px;left:50%;
  transform:translateX(-50%);
  background:var(--color-primary);
  color:#fff;
  font-size:12px;
  font-weight:700;
  padding:4px 14px;
  border-radius:999px;
}
.pricing-card h3{margin:0 0 14px;color:var(--color-navy);font-size:18px;}
.price{font-size:22px;font-weight:800;color:var(--color-navy);margin:0 0 10px;}
.price span{color:var(--color-primary-dark);}
.price-note{font-size:13.5px;color:var(--color-text-soft);margin:0;}

/* Testimonials */
.testi-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.testi-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
}
.testi-card p{font-size:14.5px;color:var(--color-text);margin:0 0 16px;}
.testi-user{font-size:13px;font-weight:700;color:var(--color-primary-dark);}

/* Order */
.order{background:var(--color-navy);color:#fff;}
.order-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:start;
}
.order .section-title, .order .section-sub{color:#fff;}
.order-tips li{padding:8px 0;color:#C9D2E3;font-size:15px;}
.order-form{
  background:#fff;
  border-radius:var(--radius);
  padding:28px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.order-form input, .order-form textarea{
  width:100%;
  border:1px solid var(--color-border);
  border-radius:10px;
  padding:12px 14px;
  font-size:14.5px;
  font-family:inherit;
  color:var(--color-text);
  background:var(--color-bg-soft);
}
.order-form input:focus, .order-form textarea:focus{outline:2px solid var(--color-primary);background:#fff;}
.form-note{font-size:12.5px;color:var(--color-text-soft);text-align:center;margin:4px 0 0;}

/* FAQ */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{border:1px solid var(--color-border);border-radius:12px;overflow:hidden;}
.faq-q{
  width:100%;
  text-align:left;
  background:#fff;
  border:none;
  padding:18px 22px;
  font-size:15.5px;
  font-weight:700;
  color:var(--color-navy);
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.faq-q span.plus{font-size:20px;color:var(--color-primary);transition:transform .2s;flex-shrink:0;margin-left:16px;}
.faq-item.open .faq-q span.plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
  padding:0 22px;
  background:var(--color-bg-soft);
}
.faq-item.open .faq-a{max-height:200px;padding:14px 22px;}
.faq-a p{margin:0;font-size:14.5px;color:var(--color-text-soft);}

/* Footer */
.footer{background:#12203B;color:#C9D2E3;padding:56px 0 0;}
.footer-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .logo{color:#fff;}
.footer-brand p{font-size:14px;color:#9BA9C4;margin:14px 0 18px;}
.footer-social{display:flex;gap:14px;font-size:13px;color:#9BA9C4;}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 16px;}
.footer-col a, .footer-col p{display:block;font-size:14px;color:#9BA9C4;margin-bottom:10px;}
.footer-col a:hover{color:var(--color-primary);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  text-align:center;
  padding:18px 0;
  font-size:13px;
  color:#7C8AAA;
}

/* Responsive */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;}
  .hero-image{order:-1;}
  .steps, .category-grid, .pricing-grid, .testi-grid, .product-grid{grid-template-columns:repeat(2,1fr);}
  .why-inner, .order-inner{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  .nav{
    position:absolute;
    top:72px;left:0;right:0;
    background:#fff;
    flex-direction:column;
    padding:16px 24px;
    border-bottom:1px solid var(--color-border);
    display:none;
    gap:16px;
  }
  .nav.open{display:flex;}
  .nav-toggle{display:flex;}
  .lang-switch{display:none;}
  .hero-text h1{font-size:32px;}
  .hero-stats{gap:20px;}
  .steps, .category-grid, .pricing-grid, .testi-grid, .product-grid{grid-template-columns:repeat(1,1fr);}
  .form-row{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  .section{padding:52px 0;}
}