:root{
  --brand:#ff7a00;
  --brand-deep:#d85e00;
  --ink:#1f2937;
  --muted:#5f6b7a;
  --bg:#fff8f1;
  --panel:#ffffff;
  --line:#ffd0a8;
  --accent:#fff0df;
  --shadow:0 10px 30px rgba(20,20,20,.08);
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#fffaf6 0%,#ffffff 26%,#fff8f0 100%);
  line-height:1.9;
}
img{max-width:100%;display:block;border-radius:18px}
a{color:var(--brand-deep);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{
  border-bottom:1px solid rgba(255,122,0,.12);
  background:rgba(255,255,255,.96);
}
.topbar,.main-nav,.container,.footer-grid,.breadcrumb{
  width:min(calc(100% - 32px),var(--max));
  margin:0 auto;
}
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  padding:18px 0 10px;
}
.brand{
  font-size:1.9rem;
  font-weight:800;
  color:var(--brand-deep);
  letter-spacing:.06em;
}
.tagline{margin:0;color:var(--muted);font-size:.95rem}
.main-nav{
  display:flex;
  flex-wrap:wrap;
  gap:12px 18px;
  align-items:center;
  padding:12px 0 18px;
}
.main-nav a{
  padding:8px 0;
  font-weight:700;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  padding:11px 18px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#ff9338);
  color:#fff !important;
  box-shadow:var(--shadow);
}
.breadcrumb{
  padding:16px 0 0;
  color:var(--muted);
  font-size:.95rem;
}
.breadcrumb span{padding:0 6px}
.hero{
  width:min(calc(100% - 32px),var(--max));
  margin:18px auto 0;
  display:grid;
  grid-template-columns:1.2fr .95fr;
  gap:24px;
  align-items:center;
}
.hero img{
  width:100%;
  min-height:300px;
  object-fit:cover;
  box-shadow:var(--shadow);
}
.hero-copy{
  background:linear-gradient(180deg,#fff6ed,#fff);
  border:1px solid var(--line);
  border-radius:26px;
  padding:30px;
  box-shadow:var(--shadow);
}
.eyebrow{
  display:inline-block;
  margin:0 0 8px;
  color:var(--brand-deep);
  background:var(--accent);
  border-radius:999px;
  padding:6px 12px;
  font-weight:700;
}
.hero h1,.section h2,.section h3{
  line-height:1.35;
}
.hero h1{
  margin:0 0 14px;
  font-size:clamp(2rem,4vw,3.4rem);
}
.hero p{margin:0;color:#344255}
.container{padding:34px 0 40px}
.section{
  margin:0 0 26px;
  padding:28px;
  border:1px solid rgba(255,122,0,.14);
  background:rgba(255,255,255,.96);
  border-radius:26px;
  box-shadow:var(--shadow);
}
.author-box{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:18px;
  align-items:start;
}
.author-box img{border-radius:50%}
.cards{
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.grid{display:grid;gap:18px}
.card,.review-card,.panel{
  border:1px solid var(--line);
  background:#fffaf5;
  border-radius:22px;
  padding:18px;
}
.card h3,.review-card h3,.panel h3{margin-top:14px;margin-bottom:8px}
.feature-list{
  margin:14px 0 0;
  padding-left:20px;
}
.feature-list li{margin:8px 0}
.split{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:18px;
}
.support-block{
  display:grid;
  grid-template-columns:1fr .9fr;
  gap:18px;
  align-items:center;
}
.review-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.rating{
  color:#ff9900;
  font-size:1.1rem;
  letter-spacing:.08em;
}
.faq-list details{
  border:1px solid var(--line);
  border-radius:18px;
  padding:14px 16px;
  margin-bottom:12px;
  background:#fffaf5;
}
.faq-list summary{
  cursor:pointer;
  font-weight:700;
}
.gallery{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
.site-footer{
  background:#21160c;
  color:#fff2e6;
  margin-top:24px;
}
.site-footer a{color:#ffd4ab}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  padding:32px 0 40px;
}
.footer-grid h2{font-size:1.1rem}
.footer-grid ul{margin:0;padding-left:18px}
.support-strip p{margin:0}
@media (max-width:960px){
  .hero,.split,.support-block,.review-grid,.footer-grid{grid-template-columns:1fr}
  .cards,.gallery{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .topbar{flex-direction:column;align-items:flex-start}
  .main-nav{gap:8px 14px}
  .hero-copy,.section{padding:20px}
  .cards,.gallery{grid-template-columns:1fr}
  .author-box{grid-template-columns:72px 1fr}
}
@media (prefers-reduced-motion:no-preference){
  .btn-primary,.card,.review-card,.panel{transition:transform .2s ease, box-shadow .2s ease}
  .btn-primary:hover,.card:hover,.review-card:hover,.panel:hover{
    transform:translateY(-2px);
  }
  .rating{
    animation:blinkScore 1.8s ease-in-out infinite;
  }
  @keyframes blinkScore{
    0%,100%{opacity:1}
    50%{opacity:.65}
  }
}