*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;min-width:0;background:#E8F8EE;color:#222222;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}
a{color:#087F38;text-underline-offset:3px}
a:hover{color:#00A844}
img{max-width:100%}
button,input,textarea,select{font:inherit}
.site-header{
  position:sticky;
  top:0;
  z-index:9999;
  width:100%;
  background:#00C853;
  box-shadow:0 8px 20px rgba(0,160,70,.18);
}
.header-inner{
  max-width:1180px;
  min-height:70px;
  margin:0 auto;
  padding:0 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.site-logo{display:inline-flex;align-items:center;min-width:112px;text-decoration:none}
.site-logo img{
  display:block;
  height:40px;
  width:auto;
  max-width:160px;
  object-fit:contain;
}
.logo-fallback{display:inline-flex;height:40px;align-items:center;font-size:24px;font-weight:900;color:#fff;white-space:nowrap}
.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;flex:1;min-width:0}
.nav-core a{
  color:#FFFFFF;
  padding:8px 10px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  font-size:15px;
}
.nav-core a.is-current,
.nav-core a:hover{
  background:rgba(255,255,255,.18);
  border-radius:999px;
}
.header-actions{display:flex;gap:8px;align-items:center;flex:0 0 auto}
.login-btn,.register-btn,.header-reg-btn{
  height:40px;min-width:88px;padding:0 16px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;text-decoration:none;font-weight:700;white-space:nowrap;
}
.login-btn,.header-reg-btn{
  background:#FFFFFF;color:#087F38;
}
.register-btn{
  background:transparent;color:#FFFFFF;border:1px solid rgba(255,255,255,.7);
}
.header-reg-btn{display:none}
.menu-toggle{display:none;border:0;background:transparent;color:#fff;width:42px;height:42px;font-size:28px;line-height:1;cursor:pointer;padding:0}
.channel-strip{background:#E8F8EE;border-bottom:1px solid rgba(0,200,83,.16);box-shadow:0 4px 14px rgba(8,127,56,.05)}
.channel-strip-inner{max-width:1180px;margin:0 auto;padding:8px 18px;display:flex;gap:18px;overflow-x:auto;scrollbar-width:thin;white-space:nowrap}
.channel-strip a{color:#2E5B3C;text-decoration:none;font-size:14px;font-weight:700;flex:0 0 auto}
.channel-strip a.is-current,.channel-strip a:hover{color:#00A844}
.site-main{width:100%;max-width:100%;min-height:58vh}
.container{width:min(1180px,calc(100% - 36px));margin:0 auto}
.reading{width:min(820px,100%);margin-left:auto;margin-right:auto}
.section{padding:64px 0}
.section.compact{padding:42px 0}
.section.white{background:#fff}
.section.mint{background:#F4FBF6}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#087F38;background:#E8F8EE;border:1px solid rgba(0,200,83,.16);border-radius:999px;padding:5px 10px;font-size:13px;font-weight:800;letter-spacing:.02em}
h1,h2,h3{color:#14331F;line-height:1.25;margin-top:0}
h1{font-size:clamp(36px,5vw,48px);letter-spacing:-.03em;margin-bottom:18px}
h2{font-size:clamp(25px,3vw,32px);margin-bottom:16px}
h3{font-size:19px;margin-bottom:8px}
p{margin:0 0 16px}
.lead{font-size:18px;color:#34483a;max-width:760px}
.muted{color:#5B6B62}
.hero{padding:56px 0 50px}
.hero-grid,.split-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:42px;align-items:center}
.hero-copy{min-width:0}
.hero-copy .main-btn{margin-top:10px}
.main-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;min-width:96px;padding:0 20px;
  background:#00C853;color:#FFFFFF;border-radius:999px;
  text-decoration:none;font-weight:700;
  box-shadow:0 8px 18px rgba(0,200,83,.28);
}
.main-btn:hover{background:#00A844;color:#fff}
.media{
  position:relative;width:100%;max-width:100%;overflow:hidden;
  border-radius:16px;background:#E8F8EE;
  aspect-ratio:16/9;
}
.media > img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:contain;object-position:center center;display:block;
}
.media.placeholder::before{content:"49图库资讯";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#5B6B62;font-weight:800;letter-spacing:.08em;background:linear-gradient(135deg,#F4FBF6,#E8F8EE)}
.media.card-media{height:168px;aspect-ratio:auto}
.media.feature-media{height:236px;aspect-ratio:auto}
.chip-row{display:flex;gap:10px;overflow-x:auto;padding:4px 1px 10px;scrollbar-width:thin}
.chip-row a{flex:0 0 auto;text-decoration:none;color:#087F38;background:#fff;border:1px solid rgba(0,200,83,.16);border-radius:999px;padding:9px 14px;font-weight:700;box-shadow:0 5px 16px rgba(8,127,56,.05)}
.chip-row a:hover{border-color:#00A844;color:#00A844}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:26px}
.section-head p{max-width:700px;margin:0;color:#5B6B62}
.channel-matrix{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card,.feature-card,.index-card,.qa-item,.notice,.step-item,.mini-card{background:#fff;border:1px solid rgba(0,200,83,.16);border-radius:16px;box-shadow:0 12px 28px rgba(8,127,56,.08)}
.card,.feature-card,.index-card,.mini-card{padding:22px}
.card p,.feature-card p,.index-card p,.mini-card p{color:#5B6B62}
.text-link{display:inline-flex;font-weight:800;text-decoration:none;margin-top:4px}
.text-link::after{content:" →"}
.list-clean{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.list-clean li{padding:14px 16px;background:#F4FBF6;border-radius:12px;border:1px solid rgba(0,200,83,.12)}
.guide-steps{display:grid;gap:14px;counter-reset:guide}
.step-item{position:relative;padding:20px 22px 20px 66px;counter-increment:guide}
.step-item::before{content:counter(guide);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:50%;background:#00C853;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}
.article-body{font-size:17px;line-height:1.88}
.article-body h2{margin-top:36px}
.article-body h3{margin-top:26px}
.notice{padding:20px 22px;background:#F4FBF6}
.notice strong{color:#087F38}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.compare-grid .feature-card{min-height:100%}
.faq-list{display:grid;gap:14px}
.qa-item{padding:22px}
.qa-item h2,.qa-item h3{font-size:19px;margin-bottom:10px}
.tagline{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}
.tagline span{font-size:13px;padding:6px 10px;border-radius:999px;background:#F4FBF6;color:#087F38;border:1px solid rgba(0,200,83,.13);font-weight:700}
.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.related a{padding:8px 12px;border-radius:10px;background:#E8F8EE;text-decoration:none;font-weight:700}
.app-note{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.72fr);gap:28px;align-items:center}
.site-footer{background:#1B1F1C;color:#D7E6DB;padding:54px 0 100px}
.footer-grid{width:min(1180px,calc(100% - 36px));margin:0 auto;display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:28px}
.site-footer h2{font-size:17px;color:#fff;margin-bottom:14px}
.site-footer a{display:block;color:#D7E6DB;text-decoration:none;margin:7px 0}
.site-footer a:hover{color:#fff}
.site-footer .site-logo{display:inline-flex;margin-bottom:12px}
.site-footer .logo-fallback{color:#fff}
.footer-brand p{max-width:360px;color:#aebdb2}
.footer-bottom{width:min(1180px,calc(100% - 36px));margin:34px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:24px;align-items:flex-start;color:#aebdb2;font-size:14px}
.floating-tools{position:fixed;right:12px;top:38%;z-index:9000;width:58px;display:grid;gap:7px}
.floating-tools a,.floating-tools button{border:1px solid rgba(0,200,83,.18);background:#fff;color:#087F38;text-decoration:none;border-radius:12px;padding:10px 5px;font-size:12px;line-height:1.25;text-align:center;font-weight:800;box-shadow:0 8px 18px rgba(8,127,56,.08);cursor:pointer}
.floating-tools .float-register{background:#00C853;color:#fff}
.mobile-bottom{display:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:15px 16px;border-bottom:1px solid #E8F8EE}
.drawer-head .logo-fallback{color:#087F38}
.drawer-close{width:40px;height:40px;border:0;background:#E8F8EE;color:#087F38;border-radius:50%;font-size:26px;cursor:pointer}
.drawer-scroll{height:calc(100vh - 70px);overflow-y:auto;padding:10px 16px 28px}
.drawer-group{padding:14px 0;border-bottom:1px solid #edf4ef}
.drawer-group h2{font-size:14px;color:#5B6B62;margin:0 0 8px;text-transform:none}
.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.drawer-links a{text-decoration:none;color:#14331F;padding:9px 8px;border-radius:9px;font-weight:700}
.drawer-links a.is-current{background:#E8F8EE;color:#087F38}
body.drawer-open{overflow:hidden}
.mobile-drawer,
.drawer-mask{display:none}

@media(max-width:980px){
.mobile-drawer{
  display:block;
  position:fixed;
  inset:0 auto 0 0;
  width:min(84vw,320px);
  background:#fff;
  z-index:12000;
  transform:translateX(-105%);
  transition:transform .2s ease;
  box-shadow:18px 0 40px rgba(20,51,31,.18);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(20,51,31,.42);
  z-index:11000;
  opacity:0;
  pointer-events:none;
  transition:opacity .18s ease;
}
.drawer-mask.is-visible{
  display:block;
  opacity:1;
  pointer-events:auto;
}
}
@media(max-width:1100px){
  .channel-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-core a{padding:8px 7px;font-size:14px}
  .header-actions .register-btn{display:none}
}
@media(max-width:980px){
  .header-inner{min-height:64px;padding:0 12px;display:grid;grid-template-columns:44px 1fr auto;gap:8px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-inner>.site-logo{justify-self:center;min-width:0}
  .site-logo img{height:36px;max-width:138px}
  .nav-core,.header-actions{display:none}
  .header-reg-btn{display:inline-flex;min-width:76px;height:38px;padding:0 12px;font-size:14px;justify-self:end}
  .channel-strip{display:none}
  .floating-tools{display:none}
  .site-main{padding-bottom:72px}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(0,200,83,.16);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -8px 20px rgba(8,127,56,.08)}
  .mobile-bottom a{text-align:center;padding:13px 4px;color:#5B6B62;text-decoration:none;font-size:13px;font-weight:800}
  .mobile-bottom a.is-current{color:#00A844;background:#F4FBF6}
  .hero{padding-top:40px}
  .hero-grid,.split-grid,.app-note{grid-template-columns:1fr;gap:28px}
  .hero-grid .media{order:-1}
  .split-grid.reverse .media{order:2}
  .channel-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bottom{display:block}
}
@media(max-width:640px){
  .container{width:min(100% - 24px,1180px)}
  .section{padding:44px 0}
  .section.compact{padding:34px 0}
  h1{font-size:clamp(28px,9vw,34px)}
  h2{font-size:24px}
  .lead{font-size:17px}
  .card-grid,.card-grid.two,.compare-grid{grid-template-columns:1fr}
  .channel-matrix{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .channel-matrix .card{padding:16px 14px}
  .channel-matrix .card p{font-size:14px;line-height:1.65}
  .section-head{display:block}
  .media.card-media{height:156px}
  .media.feature-media{height:220px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-bottom:112px}
  .step-item{padding-left:60px}
}
@media(max-width:430px){
  .header-inner{grid-template-columns:42px minmax(0,1fr) auto;padding:0 10px}
  .header-reg-btn{min-width:72px;padding:0 10px}
  .site-logo img{height:34px;max-width:126px}
  .logo-fallback{font-size:20px}
}