:root{
  --bg:#fbfaf5;--soft:#ffffff;--title:#0f172a;--text:#111111;--body:#374151;--muted:#667085;--line:#e7e5dd;
  --brand:#e31b23;--green:#2f6b4f;--shadow:0 18px 38px rgba(47,107,79,.07);--radius:22px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--body);font:16px/1.75 "Microsoft YaHei","PingFang SC",sans-serif}
img{max-width:100%;height:auto;display:block} a{text-decoration:none;color:inherit}
.wrap{width:min(1100px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.nav-row{min-height:72px;display:flex;align-items:center;gap:18px}.brand img{height:34px;width:auto;object-fit:contain}
.nav{margin-left:auto;display:flex;gap:20px}.nav a{font-size:14px;color:#475467}.menu-toggle{display:none;margin-left:auto;border:0;background:transparent;padding:0}.menu-toggle span{display:block;width:24px;height:2px;margin:5px 0;background:#111}
.hero{padding:54px 0;background:linear-gradient(180deg,#fbfaf5,#fff)} .hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.eyebrow{margin:0;font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--brand)}
.hero-copy h1,.section-head h2,.cta-box h2{margin:10px 0 16px;line-height:1.16;color:var(--title)} .hero-copy h1{font-size:clamp(34px,4.4vw,54px)}
.hero-media{display:grid;grid-template-columns:1fr 1fr;gap:16px}.hero-card,.rule-grid article,.basic-image,.mode-list div,.order-row article,.faq-item,.cta-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{margin:0;padding:14px}.hero-card img{width:100%;object-fit:contain}
.section{padding:66px 0}.section-soft,.section-order{background:#fff}
.section-head{max-width:760px;margin-bottom:24px}.section-head p{margin:0;color:var(--muted)}
.rule-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.rule-grid article{padding:22px;position:relative}.rule-grid article::before{content:'';position:absolute;left:22px;top:0;width:44px;height:4px;background:var(--brand)}
.rule-grid h3,.mode-list strong{margin:10px 0 8px;color:var(--title)} .rule-grid p,.mode-list span{margin:0;color:var(--muted)}
.basic-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}.basic-image{margin:0;padding:16px}.basic-image img{width:100%;object-fit:cover;object-position:center}
.mode-list{display:grid;gap:14px}.mode-list div{padding:20px;border-left:4px solid var(--green)} .mode-list strong{display:block}
.order-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.order-row article{padding:18px;text-align:center}
.order-row span{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:12px;background:#edf7f1;color:var(--green);font-weight:800;margin-bottom:12px}
.faq-list{display:grid;gap:14px}.faq-item{overflow:hidden}
.faq-question{width:100%;display:flex;justify-content:space-between;gap:18px;padding:18px 22px;border:0;background:transparent;color:var(--title);font:inherit;font-weight:700;text-align:left;cursor:pointer}
.faq-question b{color:var(--brand);font-size:24px}.faq-answer{display:none;padding:0 22px 18px;color:var(--muted)}.faq-item.open .faq-answer{display:block}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-grid span{padding:12px 16px;border-radius:16px;background:#fff;border:1px solid var(--line);color:#40526a;text-align:center}
.cta-section{padding:24px 0 72px}.cta-box{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:28px;background:linear-gradient(90deg,#fff,#f7faf8)}
.btn{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:0 22px;border-radius:999px;background:var(--brand);color:#fff;font-weight:700}
@media (max-width:980px){
  .hero-grid,.hero-media,.rule-grid,.basic-grid,.order-row,.related-grid{grid-template-columns:1fr}
  .nav{display:none;width:100%;order:4;flex-direction:column;padding-bottom:16px}.nav.open{display:flex}
  .menu-toggle{display:block}.nav-row{flex-wrap:wrap}.cta-box{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){.wrap{width:min(100% - 24px,1100px)}.section{padding:52px 0}.hero-copy h1{font-size:34px}}

.site-logo,
.logo img,
.brand img,
.header-logo img,
.nav-logo img {
  display: block;
  width: auto !important;
  height: auto !important;
  max-height: 40px !important;
  max-width: 180px !important;
  object-fit: contain !important;
}

.brand,
.logo,
.header-logo,
.nav-logo {
  overflow: visible !important;
}

.site-header .brand,
header .brand,
header .logo,
header .header-logo,
header .nav-logo {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}