:root{
  --huangdou-primary:#f5a623;
  --huangdou-primary-dark:#d98a0b;
  --huangdou-primary-light:#ffd98a;
  --huangdou-bg:#ffffff;
  --huangdou-bg-soft:#faf6ee;
  --huangdou-text:#2b2b2b;
  --huangdou-text-soft:#5c5c5c;
  --huangdou-border:#ece3d4;
  --huangdou-card:#ffffff;
  --huangdou-shadow:0 6px 24px rgba(120,90,20,.10);
  --huangdou-shadow-lg:0 16px 48px rgba(120,90,20,.16);
  --huangdou-radius:14px;
  --huangdou-radius-lg:22px;
  --huangdou-max:1200px;
  --huangdou-glass:rgba(255,255,255,.72);
  --huangdou-glass-border:rgba(255,255,255,.55);
  --huangdou-gradient:linear-gradient(135deg,#f5a623 0%,#e07a5f 55%,#b04a33 100%);
  --huangdou-gradient-soft:linear-gradient(160deg,#fff6e5 0%,#fdeee0 45%,#ffffff 100%);
}
html[data-theme="dark"]{
  --huangdou-primary:#ffc457;
  --huangdou-primary-dark:#f5a623;
  --huangdou-primary-light:#ffe6b0;
  --huangdou-bg:#15130f;
  --huangdou-bg-soft:#1d1a14;
  --huangdou-text:#f2ecdf;
  --huangdou-text-soft:#c8bfae;
  --huangdou-border:#332e24;
  --huangdou-card:#1f1b15;
  --huangdou-shadow:0 6px 24px rgba(0,0,0,.45);
  --huangdou-shadow-lg:0 16px 48px rgba(0,0,0,.6);
  --huangdou-glass:rgba(31,27,21,.72);
  --huangdou-glass-border:rgba(255,255,255,.08);
  --huangdou-gradient:linear-gradient(135deg,#ffc457 0%,#e07a5f 55%,#8a3a26 100%);
  --huangdou-gradient-soft:linear-gradient(160deg,#241f16 0%,#1d1a14 45%,#15130f 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--huangdou-bg);
  color:var(--huangdou-text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background .35s ease,color .35s ease;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:var(--huangdou-primary-dark);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--huangdou-primary)}
ul,ol{list-style:none}
button{font-family:inherit}
::selection{background:var(--huangdou-primary);color:#3a2a06}
.container{max-width:var(--huangdou-max);margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--huangdou-primary);color:#3a2a06;padding:10px 18px;z-index:9999;border-radius:0 0 10px 0;font-weight:700}
.skip-link:focus{left:0}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--huangdou-glass);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--huangdou-border);
  transition:box-shadow .35s ease,background .35s ease,border-color .35s ease;
}
.site-header.scrolled{box-shadow:var(--huangdou-shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-logo{width:40px;height:40px;border-radius:11px;flex-shrink:0;transition:transform .35s cubic-bezier(.34,1.56,.64,1)}
.brand:hover .brand-logo{transform:rotate(-8deg) scale(1.08)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:19px;font-weight:800;color:var(--huangdou-text);letter-spacing:.5px}
.brand-slogan{font-size:11px;color:var(--huangdou-text-soft);letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.main-nav a{
  position:relative;
  padding:8px 12px;border-radius:9px;font-size:14px;color:var(--huangdou-text-soft);font-weight:500;white-space:nowrap;
  transition:color .22s ease,background .22s ease,transform .22s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:2px;border-radius:2px;
  background:var(--huangdou-primary);transform:translateX(-50%);transition:width .28s ease;
}
.main-nav a:hover,.main-nav a.active{color:var(--huangdou-primary-dark);background:var(--huangdou-bg-soft)}
.main-nav a:hover::after,.main-nav a.active::after{width:22px}
.header-tools{display:flex;align-items:center;gap:8px;flex-shrink:0}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{
  width:150px;padding:8px 34px 8px 14px;border:1px solid var(--huangdou-border);border-radius:22px;
  background:var(--huangdou-bg-soft);color:var(--huangdou-text);font-size:13px;outline:none;
  transition:width .35s cubic-bezier(.4,0,.2,1),border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.search-box input::placeholder{color:var(--huangdou-text-soft);opacity:.75}
.search-box input:focus{width:210px;border-color:var(--huangdou-primary);box-shadow:0 0 0 3px rgba(245,166,35,.16);background:var(--huangdou-bg)}
.search-box button{
  position:absolute;right:6px;background:none;border:none;cursor:pointer;padding:5px;display:flex;align-items:center;
  color:var(--huangdou-text-soft);border-radius:50%;transition:color .2s ease,transform .2s ease;
}
.search-box button:hover{color:var(--huangdou-primary-dark);transform:scale(1.12)}
.icon-btn{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--huangdou-border);background:var(--huangdou-bg-soft);
  color:var(--huangdou-text-soft);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .25s cubic-bezier(.34,1.56,.64,1);
}
.icon-btn:hover{border-color:var(--huangdou-primary);color:var(--huangdou-primary-dark);transform:translateY(-2px);box-shadow:0 6px 14px rgba(245,166,35,.22)}
.icon-btn:active{transform:translateY(0) scale(.96)}
.menu-toggle{display:none}
.mobile-nav{
  display:none;flex-direction:column;padding:10px 20px 18px;border-top:1px solid var(--huangdou-border);
  background:var(--huangdou-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  animation:navSlide .3s ease;
}
@keyframes navSlide{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:12px 10px;border-radius:10px;font-size:15px;color:var(--huangdou-text-soft);border-bottom:1px dashed var(--huangdou-border);transition:all .2s ease}
.mobile-nav a:hover{color:var(--huangdou-primary-dark);background:var(--huangdou-bg-soft);padding-left:16px}
.mobile-nav a:last-child{border-bottom:none}
/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;font-size:13px;color:var(--huangdou-text-soft)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li+li::before{content:"›";color:var(--huangdou-border);font-size:14px}
/* ===== Hero ===== */
.hero{
  position:relative;
  background:var(--huangdou-gradient-soft);
  padding:44px 0 52px;
  border-bottom:1px solid var(--huangdou-border);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-180px;right:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.22),transparent 70%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-200px;left:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,122,95,.16),transparent 70%);pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;background:rgba(245,166,35,.16);color:var(--huangdou-primary-dark);
  font-size:12px;font-weight:700;padding:7px 15px;border-radius:22px;margin-bottom:18px;letter-spacing:.5px;
  border:1px solid rgba(245,166,35,.28);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  animation:badgePulse 3s ease-in-out infinite;
}
@keyframes badgePulse{0%,100%{box-shadow:0 0 0 0 rgba(245,166,35,.28)}50%{box-shadow:0 0 0 8px rgba(245,166,35,0)}}
.hero h1{font-size:36px;line-height:1.32;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero h1 .hl{position:relative;color:var(--huangdou-primary-dark);white-space:nowrap}
.hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:9px;border-radius:5px;
  background:rgba(245,166,35,.25);z-index:-1;
}
.hero-lead{font-size:16px;color:var(--huangdou-text-soft);margin-bottom:24px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:13px;font-size:15px;font-weight:700;
  cursor:pointer;border:1px solid transparent;transition:all .28s cubic-bezier(.34,1.56,.64,1);position:relative;overflow:hidden;
}
.btn svg{transition:transform .28s ease}
.btn-primary{background:var(--huangdou-gradient);color:#fff;box-shadow:0 8px 22px rgba(245,166,35,.36)}
.btn-primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 14px 30px rgba(245,166,35,.46)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{background:var(--huangdou-glass);border-color:var(--huangdou-border);color:var(--huangdou-text);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--huangdou-primary);color:var(--huangdou-primary-dark);transform:translateY(-3px);box-shadow:var(--huangdou-shadow)}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap}
.stat-item strong{display:block;font-size:27px;font-weight:800;color:var(--huangdou-primary-dark);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-item span{font-size:12px;color:var(--huangdou-text-soft);letter-spacing:.5px}
/* ===== Carousel ===== */
.carousel{
  position:relative;border-radius:var(--huangdou-radius-lg);overflow:hidden;
  box-shadow:var(--huangdou-shadow-lg);background:var(--huangdou-card);
  border:1px solid var(--huangdou-border);
}
.carousel-track{display:flex;transition:transform .65s cubic-bezier(.4,0,.2,1)}
.slide{min-width:100%;position:relative}
.slide svg{width:100%;height:auto;display:block}
.slide-caption{
  position:absolute;left:0;right:0;bottom:0;padding:20px 22px;
  background:linear-gradient(to top,rgba(0,0,0,.78),rgba(0,0,0,.28) 60%,transparent);
  color:#fff;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);
}
.slide-caption h3{font-size:17px;font-weight:700;margin-bottom:4px}
.slide-caption p{font-size:12.5px;opacity:.92}
.carousel-dots{position:absolute;bottom:14px;right:18px;display:flex;gap:6px;z-index:5}
.carousel-dots button{
  width:9px;height:9px;border-radius:50%;border:none;background:rgba(255,255,255,.45);cursor:pointer;padding:0;
  transition:all .3s cubic-bezier(.34,1.56,.64,1);
}
.carousel-dots button:hover{background:rgba(255,255,255,.8)}
.carousel-dots button.active{background:var(--huangdou-primary);width:24px;border-radius:5px}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  background:rgba(0,0,0,.42);border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
  z-index:5;transition:background .25s ease,transform .25s ease;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.carousel-arrow:hover{background:var(--huangdou-primary);transform:translateY(-50%) scale(1.1)}
.carousel-arrow.prev{left:12px}
.carousel-arrow.next{right:12px}
/* ===== Sections ===== */
.section{padding:60px 0;border-bottom:1px solid var(--huangdou-border);position:relative}
.section:last-of-type{border-bottom:none}
.section-head{margin-bottom:34px;max-width:860px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:2.5px;color:var(--huangdou-primary-dark);
  text-transform:uppercase;margin-bottom:10px;position:relative;padding-left:26px;
}
.section-tag::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:18px;height:3px;border-radius:2px;
  background:var(--huangdou-gradient);
}
.section-head h2{font-size:28px;font-weight:800;line-height:1.4;margin-bottom:12px}
.section-head p{color:var(--huangdou-text-soft);font-size:15px}
.section-head h3{font-size:19px;font-weight:700;margin:24px 0 10px}
.section-head h4{font-size:16px;font-weight:700;margin:16px 0 8px;color:var(--huangdou-text)}
.prose p{margin-bottom:16px;color:var(--huangdou-text-soft);font-size:15.5px}
.prose strong{color:var(--huangdou-text)}
.prose h3{font-size:19px;font-weight:700;margin:26px 0 10px;color:var(--huangdou-text)}
.prose h4{font-size:16px;font-weight:700;margin:18px 0 8px;color:var(--huangdou-text)}
.prose ul,.prose ol{margin:0 0 18px 4px}
.prose ul li,.prose ol li{position:relative;padding-left:24px;margin-bottom:9px;color:var(--huangdou-text-soft);font-size:15px;transition:color .2s ease}
.prose ul li:hover,.prose ol li:hover{color:var(--huangdou-text)}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--huangdou-gradient);transition:transform .25s ease;
}
.prose ul li:hover::before{transform:scale(1.4)}
.prose ol{counter-reset:item}
.prose ol li::before{
  counter-increment:item;content:counter(item);position:absolute;left:0;top:3px;width:19px;height:19px;border-radius:50%;
  background:var(--huangdou-gradient);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
/* ===== Grid cards ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  position:relative;
  background:var(--huangdou-card);border:1px solid var(--huangdou-border);border-radius:var(--huangdou-radius);
  padding:26px;transition:transform .32s cubic-bezier(.34,1.56,.64,1),box-shadow .32s ease,border-color .32s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;border-radius:var(--huangdou-radius) var(--huangdou-radius) 0 0;
  background:var(--huangdou-gradient);transform:scaleX(0);transform-origin:left;transition:transform .38s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--huangdou-shadow-lg);border-color:rgba(245,166,35,.5)}
.card:hover::before{transform:scaleX(1)}
.card-icon{
  width:48px;height:48px;border-radius:13px;background:var(--huangdou-bg-soft);display:flex;align-items:center;justify-content:center;
  margin-bottom:15px;transition:transform .32s cubic-bezier(.34,1.56,.64,1),background .3s ease;
}
.card:hover .card-icon{transform:scale(1.1) rotate(-6deg);background:rgba(245,166,35,.15)}
.card h3{font-size:17px;font-weight:700;margin-bottom:9px}
.card h4{font-size:15px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--huangdou-text-soft);line-height:1.72}
.card ul{margin-top:10px}
.card ul li{font-size:13.5px;color:var(--huangdou-text-soft);padding-left:18px;position:relative;margin-bottom:6px;transition:color .2s ease}
.card ul li::before{content:"✓";position:absolute;left:0;color:var(--huangdou-primary-dark);font-weight:700;font-size:12px}
.card ul li:hover{color:var(--huangdou-text)}
/* ===== Timeline ===== */
.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(to bottom,var(--huangdou-primary),var(--huangdou-border));
}
.timeline-item{position:relative;margin-bottom:28px;transition:transform .28s ease}
.timeline-item:hover{transform:translateX(5px)}
.timeline-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--huangdou-bg);border:3px solid var(--huangdou-primary);transition:all .28s ease;
}
.timeline-item:hover::before{background:var(--huangdou-primary);box-shadow:0 0 0 6px rgba(245,166,35,.18)}
.timeline-item h4{font-size:16px;font-weight:700;margin-bottom:6px}
.timeline-item .year{
  display:inline-block;font-size:12px;font-weight:700;color:var(--huangdou-primary-dark);background:rgba(245,166,35,.15);
  padding:3px 11px;border-radius:11px;margin-bottom:8px;
}
.timeline-item p{font-size:14px;color:var(--huangdou-text-soft)}
/* ===== Articles ===== */
.article-card{display:flex;flex-direction:column;height:100%}
.article-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--huangdou-text-soft);margin-bottom:12px}
.article-meta .tag{background:rgba(245,166,35,.15);color:var(--huangdou-primary-dark);padding:3px 11px;border-radius:11px;font-weight:700}
.article-card h3{font-size:16.5px;font-weight:700;margin-bottom:10px;line-height:1.5;transition:color .22s ease}
.article-card:hover h3{color:var(--huangdou-primary-dark)}
.article-card p{font-size:13.5px;color:var(--huangdou-text-soft);flex:1;margin-bottom:14px}
.read-more{font-size:13.5px;font-weight:700;color:var(--huangdou-primary-dark);display:inline-flex;align-items:center;gap:5px;transition:gap .25s ease}
.read-more:hover{gap:10px}
/* ===== FAQ ===== */
.faq-list{max-width:920px}
.faq-item{
  border:1px solid var(--huangdou-border);border-radius:var(--huangdou-radius);margin-bottom:12px;background:var(--huangdou-card);
  overflow:hidden;transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
}
.faq-item:hover{border-color:rgba(245,166,35,.45);box-shadow:var(--huangdou-shadow)}
.faq-item.open{border-color:var(--huangdou-primary);box-shadow:var(--huangdou-shadow)}
.faq-question{
  width:100%;text-align:left;background:none;border:none;padding:18px 22px;font-size:15.5px;font-weight:700;
  color:var(--huangdou-text);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  transition:color .22s ease;
}
.faq-question:hover{color:var(--huangdou-primary-dark)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--huangdou-bg-soft);display:flex;align-items:center;
  justify-content:center;font-size:15px;color:var(--huangdou-primary-dark);transition:transform .35s cubic-bezier(.34,1.56,.64,1),background .28s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(245,166,35,.18)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1)}
.faq-answer-inner{padding:0 22px 20px;font-size:14.5px;color:var(--huangdou-text-soft);line-height:1.82}
/* ===== HowTo ===== */
.howto-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}
.howto-step{
  position:relative;background:var(--huangdou-card);border:1px solid var(--huangdou-border);border-radius:var(--huangdou-radius);
  padding:26px 22px 22px;transition:transform .32s cubic-bezier(.34,1.56,.64,1),box-shadow .32s ease,border-color .32s ease;
}
.howto-step:hover{transform:translateY(-6px);box-shadow:var(--huangdou-shadow-lg);border-color:rgba(245,166,35,.5)}
.howto-step .step-num{
  position:absolute;top:-15px;left:22px;width:32px;height:32px;border-radius:11px;background:var(--huangdou-gradient);
  color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(245,166,35,.4);transition:transform .32s cubic-bezier(.34,1.56,.64,1);
}
.howto-step:hover .step-num{transform:scale(1.12) rotate(-8deg)}
.howto-step h4{font-size:15.5px;font-weight:700;margin:12px 0 8px}
.howto-step p{font-size:13.5px;color:var(--huangdou-text-soft)}
/* ===== Testimonials ===== */
.testimonial{
  background:var(--huangdou-card);border:1px solid var(--huangdou-border);border-radius:var(--huangdou-radius);padding:26px;
  transition:transform .32s cubic-bezier(.34,1.56,.64,1),box-shadow .32s ease,border-color .32s ease;position:relative;
}
.testimonial::before{
  content:"“";position:absolute;top:8px;right:20px;font-size:56px;line-height:1;color:rgba(245,166,35,.18);font-family:Georgia,serif;
}
.testimonial:hover{transform:translateY(-6px);box-shadow:var(--huangdou-shadow-lg);border-color:rgba(245,166,35,.5)}
.testimonial .quote{font-size:14.5px;color:var(--huangdou-text-soft);line-height:1.82;margin-bottom:16px;font-style:italic}
.testimonial .author{display:flex;align-items:center;gap:12px}
.testimonial .avatar{width:42px;height:42px;border-radius:50%;flex-shrink:0;transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
.testimonial:hover .avatar{transform:scale(1.1)}
.testimonial .author strong{display:block;font-size:14px;font-weight:700}
.testimonial .author span{font-size:12px;color:var(--huangdou-text-soft)}
/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-card{
  background:var(--huangdou-card);border:1px solid var(--huangdou-border);border-radius:var(--huangdou-radius);padding:28px;
  transition:transform .32s cubic-bezier(.34,1.56,.64,1),box-shadow .32s ease,border-color .32s ease;
}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--huangdou-shadow-lg);border-color:rgba(245,166,35,.45)}
.contact-card h3{font-size:17px;font-weight:700;margin-bottom:16px}
.contact-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--huangdou-border);font-size:14px;transition:padding-left .22s ease}
.contact-list li:hover{padding-left:6px}
.contact-list li:last-child{border-bottom:none}
.contact-list .label{color:var(--huangdou-text-soft);min-width:78px;flex-shrink:0}
.contact-list .value{color:var(--huangdou-text);font-weight:600}
/* ===== Footer ===== */
.site-footer{background:var(--huangdou-bg-soft);border-top:1px solid var(--huangdou-border);padding:52px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;top:-120px;right:-100px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.12),transparent 70%);pointer-events:none;
}
.footer-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--huangdou-text);position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;border-radius:2px;background:var(--huangdou-gradient)}
.footer-col p,.footer-col li{font-size:13px;color:var(--huangdou-text-soft);line-height:1.9}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:var(--huangdou-text-soft);transition:color .2s ease,padding-left .22s ease;display:inline-block}
.footer-col ul li a:hover{color:var(--huangdou-primary-dark);padding-left:5px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-name{font-size:17px}
.footer-bottom{
  position:relative;z-index:1;border-top:1px solid var(--huangdou-border);padding:20px 0;font-size:12.5px;color:var(--huangdou-text-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.footer-bottom a{color:var(--huangdou-text-soft)}
.footer-bottom a:hover{color:var(--huangdou-primary-dark)}
.trust-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.trust-badges span{
  font-size:11px;padding:5px 11px;border-radius:9px;background:var(--huangdou-card);border:1px solid var(--huangdou-border);
  color:var(--huangdou-text-soft);transition:all .25s ease;
}
.trust-badges span:hover{border-color:var(--huangdou-primary);color:var(--huangdou-primary-dark);transform:translateY(-2px)}
/* ===== Back to top ===== */
.back-to-top{
  position:fixed;right:22px;bottom:26px;width:48px;height:48px;border-radius:15px;background:var(--huangdou-gradient);
  color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(245,166,35,.42);opacity:0;visibility:hidden;transform:translateY(16px) scale(.9);
  transition:all .35s cubic-bezier(.34,1.56,.64,1);z-index:900;
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.back-to-top:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 16px 34px rgba(245,166,35,.55)}
.back-to-top:active{transform:translateY(-1px) scale(.98)}
/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .75s cubic-bezier(.4,0,.2,1),transform .75s cubic-bezier(.4,0,.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
/* ===== Search results ===== */
.search-results{margin-top:16px;display:none}
.search-results.active{display:block;animation:fadeUp .35s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.search-results-inner{
  background:var(--huangdou-glass);border:1px solid var(--huangdou-primary);border-radius:var(--huangdou-radius);padding:18px 20px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--huangdou-shadow);
}
.search-results-inner h4{font-size:14px;margin-bottom:10px;color:var(--huangdou-text)}
.search-results-inner ul li{font-size:13.5px;padding:8px 0;border-bottom:1px dashed var(--huangdou-border);transition:padding-left .2s ease}
.search-results-inner ul li:hover{padding-left:5px}
.search-results-inner ul li:last-child{border-bottom:none}
.search-results-inner ul li a{color:var(--huangdou-text-soft)}
.search-results-inner ul li a:hover{color:var(--huangdou-primary-dark)}
/* ===== Anchor nav ===== */
.anchor-nav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:30px}
.anchor-nav a{
  font-size:13px;padding:8px 15px;border-radius:22px;background:var(--huangdou-glass);border:1px solid var(--huangdou-border);
  color:var(--huangdou-text-soft);transition:all .26s cubic-bezier(.34,1.56,.64,1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.anchor-nav a:hover{border-color:var(--huangdou-primary);color:var(--huangdou-primary-dark);transform:translateY(-2px);box-shadow:0 6px 16px rgba(245,166,35,.2)}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:30px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none}
  .menu-toggle{display:flex}
}
@media(max-width:768px){
  .hero{padding:34px 0 42px}
  .hero h1{font-size:27px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
}
@media(max-width:640px){
  .container{padding:0 16px}
  .hero h1{font-size:24px}
  .hero-lead{font-size:15px}
  .section-head h2{font-size:21px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .hero-stats{gap:22px}
  .stat-item strong{font-size:22px}
  .search-box input{width:110px}
  .search-box input:focus{width:160px}
  .section{padding:40px 0}
  .card{padding:22px}
  .btn{padding:12px 22px;font-size:14px}
  .carousel-arrow{width:32px;height:32px}
  .carousel-arrow.prev{left:8px}
  .carousel-arrow.next{right:8px}
  .back-to-top{right:16px;bottom:18px;width:44px;height:44px}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
}
@media(max-width:380px){
  .hero h1{font-size:21px}
  .brand-slogan{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}
@media print{
  .site-header,.back-to-top,.carousel-arrow,.carousel-dots,.anchor-nav,.search-box{display:none !important}
  body{background:#fff;color:#000}
  .card,.faq-item,.howto-step,.testimonial,.contact-card{border:1px solid #ccc;box-shadow:none}
}