*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:#E7F6F3;color:#222;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.78;overflow-x:hidden}
a{color:#08756A;text-underline-offset:3px}a:hover{color:#0C8F82}
img,svg,video{max-width:100%}
button,input,select,textarea{font:inherit}
.skip-link{position:fixed;left:12px;top:-80px;z-index:15000;background:#fff;color:#0A3D38;padding:8px 12px;border-radius:10px}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:linear-gradient(180deg,#0C8F82 0%,#0A7A6E 100%);box-shadow:0 8px 22px rgba(10,122,110,.22)}
.header-inner{max-width:1200px;min-height:72px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.site-logo{display:inline-flex;align-items:center;flex:0 0 auto;text-decoration:none}.site-logo img{display:block;height:42px;width:auto;max-width:168px;object-fit:contain}.logo-placeholder{display:inline-flex;align-items:center;justify-content:center;min-width:132px;height:42px;padding:0 14px;border:1px solid rgba(247,243,228,.42);border-radius:999px;color:#F7F3E4;font-weight:800;letter-spacing:.08em}.logo-placeholder.dark{color:#0A3D38;border-color:rgba(12,143,130,.2)}.footer-mark{color:#F7F3E4;border-color:rgba(247,243,228,.3)}
.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;min-width:0;white-space:nowrap}.nav-core a{color:#F7F3E4;padding:8px 12px;font-weight:700;text-decoration:none;white-space:nowrap}.nav-core a.is-current,.nav-core a:hover{background:rgba(247,243,228,.16);border-radius:999px;color:#fff}
.header-actions{display:flex;align-items:center;gap:8px;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:#F3E2A8;color:#0A3D38}.register-btn{background:transparent;color:#F7F3E4;border:1px solid rgba(247,243,228,.55)}.mobile-reg,.menu-toggle{display:none}
.channel-strip{background:#E7F6F3;border-bottom:1px solid rgba(12,143,130,.16)}.channel-strip-inner{max-width:1200px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:8px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}.channel-strip a{flex:0 0 auto;color:#24554F;text-decoration:none;padding:4px 8px;border-radius:999px;font-size:14px}.channel-strip a:hover{color:#0C8F82;background:#fff}
.site-main{min-height:55vh}.container{width:min(1200px,calc(100% - 40px));margin:0 auto}.reading{width:min(840px,calc(100% - 40px));margin:0 auto}.narrow{width:min(760px,calc(100% - 40px));margin:0 auto}
.section{padding:58px 0}.section-tight{padding:38px 0}.section-white{background:#fff}.section-soft{background:#F3FBFA}.section-title{margin:0 0 12px;color:#0A3D38;font-size:clamp(26px,3vw,38px);line-height:1.22}.section-lead{margin:0 0 28px;color:#4E6B66;font-size:17px;max-width:820px}
.hero-band{background:linear-gradient(135deg,#0C8F82 0%,#08756A 100%);color:#F7F3E4}.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.9fr);gap:38px;align-items:center;padding:58px 0}.hero-grid h1{margin:0 0 18px;font-size:clamp(36px,4.5vw,48px);line-height:1.12;color:#fff}.hero-grid p{margin:0;color:#F7F3E4;font-size:18px;max-width:720px}.hero-band .media{background:rgba(255,255,255,.09);border:1px solid rgba(247,243,228,.22)}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:18px;background:#E7F6F3;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{position:absolute;inset:0;display:block;background:linear-gradient(135deg,#E7F6F3,#F3FBFA)}.media-placeholder:after{content:"";position:absolute;left:12%;right:12%;top:48%;height:2px;background:rgba(12,143,130,.12)}.media.card-media{height:168px;aspect-ratio:auto}.media.feature-media{height:236px;aspect-ratio:auto}
.quick-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}.quick-item{display:flex;flex-direction:column;min-height:138px;padding:20px;border:1px solid rgba(12,143,130,.16);border-radius:18px;background:#fff;box-shadow:0 14px 30px rgba(10,122,110,.10);text-decoration:none}.quick-item strong{font-size:18px;color:#0A3D38}.quick-item span{margin-top:8px;color:#4E6B66;font-size:14px;line-height:1.65}.quick-item em{margin-top:auto;padding-top:12px;color:#08756A;font-style:normal;font-weight:700}
.magazine-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:24px}.feature-panel,.stack-card,.info-panel,.article-panel,.side-nav,.qa-item,.step-item,.catalog-item,.service-tile{background:#fff;border:1px solid rgba(12,143,130,.16);border-radius:18px;box-shadow:0 14px 30px rgba(10,122,110,.10)}.feature-panel{padding:24px}.feature-panel h2,.stack-card h3,.info-panel h2,.article-panel h2,.side-nav h2,.qa-item h2,.catalog-item h2,.service-tile h3{color:#0A3D38}.feature-panel h2{margin:20px 0 8px;font-size:26px}.feature-panel p{margin:0;color:#4E6B66}.feature-panel ol{padding-left:22px;margin:18px 0 8px}.stack-col{display:grid;gap:16px}.stack-card{padding:20px}.stack-card h3{margin:0 0 8px;font-size:19px}.stack-card p{margin:0 0 10px;color:#4E6B66}.text-link{font-weight:700;text-decoration:none}.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.info-panel{padding:24px}.info-panel h2{margin:18px 0 8px}.info-panel p{color:#4E6B66;margin:0 0 12px}
.directory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.catalog-item{padding:20px}.catalog-item h2{font-size:19px;margin:0 0 8px}.catalog-item p{margin:0 0 12px;color:#4E6B66;font-size:15px}.catalog-item a{font-weight:700;text-decoration:none}.service-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.service-tile{padding:20px;text-decoration:none}.service-tile h3{margin:0 0 6px}.service-tile p{margin:0;color:#4E6B66;font-size:14px}
.page-head{padding:50px 0 34px;background:linear-gradient(180deg,#F3FBFA 0%,#E7F6F3 100%);border-bottom:1px solid rgba(12,143,130,.16)}.page-head h1{font-size:clamp(32px,4vw,44px);line-height:1.18;margin:0 0 12px;color:#0A3D38}.page-head p{font-size:17px;color:#4E6B66;max-width:850px;margin:0}.eyebrow{display:inline-flex;margin-bottom:10px;padding:5px 10px;border-radius:999px;background:#fff;border:1px solid rgba(12,143,130,.16);color:#08756A;font-size:13px;font-weight:700}
.content-grid{display:grid;grid-template-columns:260px minmax(0,1fr);gap:26px;align-items:start}.side-nav{padding:20px;position:sticky;top:96px}.side-nav h2{font-size:18px;margin:0 0 10px}.side-nav a{display:block;padding:8px 0;border-bottom:1px solid rgba(12,143,130,.12);text-decoration:none}.article-panel{padding:28px}.article-panel h2{font-size:25px;margin:30px 0 10px}.article-panel h2:first-child{margin-top:0}.article-panel h3{color:#0A3D38;font-size:19px;margin:24px 0 8px}.article-panel p{margin:0 0 16px}.article-panel ul,.article-panel ol{padding-left:22px;margin:8px 0 18px}.article-panel li{margin:7px 0}.note{padding:16px 18px;border-left:4px solid #0C8F82;background:#F3FBFA;border-radius:0 14px 14px 0;color:#24554F}.age-note{padding:18px;border-radius:18px;background:#0A7A6E;color:#F7F3E4}.age-note strong{color:#fff}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.related-links a{display:inline-flex;padding:8px 12px;border:1px solid rgba(12,143,130,.18);border-radius:999px;background:#fff;text-decoration:none;font-weight:700}
.image-text{display:grid;grid-template-columns:minmax(300px,.92fr) minmax(0,1.08fr);gap:26px;align-items:center}.image-text.reverse{grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr)}.image-text.reverse .media{order:2}.image-text h2{color:#0A3D38;font-size:28px;margin:0 0 12px}.image-text p{margin:0 0 14px}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;counter-reset:step}.step-item{padding:22px;counter-increment:step}.step-item:before{content:counter(step);display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:#0C8F82;color:#fff;font-weight:800}.step-item h2{color:#0A3D38;font-size:20px;margin:14px 0 7px}.step-item p{margin:0;color:#4E6B66}
.two-column{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.two-column .article-panel{height:100%}.mini-list{display:grid;gap:12px}.mini-row{padding:16px 18px;background:#F3FBFA;border:1px solid rgba(12,143,130,.14);border-radius:14px}.mini-row strong{display:block;color:#0A3D38;margin-bottom:4px}.mini-row p{margin:0;color:#4E6B66}
.qa-list{display:grid;gap:16px}.qa-item{padding:22px}.qa-item h2{font-size:20px;margin:0 0 8px}.qa-item p{margin:0;color:#4E6B66}.faq-list{display:grid;gap:16px}.faq-list details{background:#fff;border:1px solid rgba(12,143,130,.16);border-radius:18px;padding:0 20px;box-shadow:0 14px 30px rgba(10,122,110,.08)}.faq-list summary{cursor:pointer;list-style:none;padding:18px 0;color:#0A3D38;font-weight:800;font-size:18px}.faq-list summary::-webkit-details-marker{display:none}.faq-list p{padding:0 0 20px;margin:0;color:#4E6B66}.faq-static{display:grid;gap:16px}.faq-static .qa-item p{color:#222}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:linear-gradient(180deg,#0C8F82 0%,#0A7A6E 100%);color:#F7F3E4;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 8px 18px rgba(10,122,110,.28)}
.mobile-drawer,.drawer-mask{display:none}
.floating-tools{position:fixed;right:14px;top:34%;z-index:9000;display:grid;gap:8px;width:88px}.floating-tools a{padding:9px 8px;border-radius:12px;background:#fff;color:#08756A;border:1px solid rgba(12,143,130,.16);box-shadow:0 8px 22px rgba(10,122,110,.10);text-align:center;text-decoration:none;font-size:13px;font-weight:700}.floating-tools .float-register{background:#0A7A6E;color:#F7F3E4}
.site-footer{background:#123833;color:#D5E8E4;margin-top:10px;padding-bottom:24px}.footer-grid{max-width:1200px;margin:0 auto;padding:48px 20px 30px;display:grid;grid-template-columns:1.15fr 1fr 1.15fr 1fr;gap:30px}.site-footer h2{color:#fff;font-size:17px;margin:0 0 12px}.site-footer a{display:block;color:#D5E8E4;text-decoration:none;padding:4px 0}.site-footer a:hover{color:#F3E2A8}.footer-logo{display:inline-flex!important}.footer-logo img{height:42px;width:auto;max-width:168px;object-fit:contain}.footer-brand p{max-width:280px;color:#D5E8E4;font-size:14px}.footer-bottom{max-width:1200px;margin:0 auto;padding:22px 20px 0;border-top:1px solid rgba(213,232,228,.16);display:flex;justify-content:space-between;gap:28px;color:#D5E8E4;font-size:13px}.footer-bottom p{margin:0}.mobile-bottom{display:none}
.drawer-open{overflow:hidden}
@media(max-width:1120px){.header-inner{gap:10px}.nav-core a{padding:8px 8px;font-size:14px}.desktop-actions a{min-width:76px;padding:0 12px}.floating-tools{display:none}.quick-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.directory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:980px){
  .site-header{position:sticky}.header-inner{min-height:64px;padding:0 14px;display:grid;grid-template-columns:48px minmax(0,1fr) 96px;gap:10px}.menu-toggle{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:0;border-radius:12px;background:#F3E2A8;cursor:pointer}.menu-toggle span{display:block;width:19px;height:2px;background:#0A7A6E;border-radius:4px}.site-logo{justify-self:center}.site-logo img{height:38px;max-width:150px}.nav-core,.desktop-actions,.channel-strip{display:none}.mobile-reg{display:inline-flex;justify-self:end;min-width:92px;height:40px;padding:0 12px;font-size:13px}
  .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(10,61,56,.18)}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(10,61,56,.42);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}
  .drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
  .drawer-head{height:68px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(12,143,130,.12)}.drawer-logo img{display:block;height:38px;width:auto;max-width:148px;object-fit:contain}.drawer-close{width:40px;height:40px;border:0;border-radius:50%;background:#E7F6F3;color:#0A3D38;font-size:26px;cursor:pointer}.drawer-scroll{height:calc(100vh - 68px);overflow-y:auto;padding:12px 18px 34px}.drawer-group{padding:10px 0 14px;border-bottom:1px solid rgba(12,143,130,.12)}.drawer-group h2{margin:0 0 7px;color:#0A3D38;font-size:14px}.drawer-group a{display:block;padding:8px 0;color:#24554F;text-decoration:none}
  .hero-grid{grid-template-columns:1fr;padding:44px 0}.hero-grid h1{font-size:clamp(30px,8vw,40px)}.hero-grid p{font-size:17px}.magazine-grid,.content-grid,.image-text,.image-text.reverse{grid-template-columns:1fr}.image-text.reverse .media{order:0}.side-nav{position:static}.service-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.steps{grid-template-columns:1fr}.footer-bottom{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(12,143,130,.16);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{height:56px;display:flex;align-items:center;justify-content:center;text-decoration:none;color:#24554F;font-weight:700;font-size:14px}.site-footer{padding-bottom:54px}
}
@media(max-width:720px){.container,.reading,.narrow{width:min(100% - 28px,1200px)}.section{padding:40px 0}.section-tight{padding:30px 0}.page-head{padding:38px 0 28px}.page-head h1{font-size:clamp(28px,8vw,34px)}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.quick-item{min-height:130px;padding:16px}.directory-grid,.compare-grid,.two-column{grid-template-columns:1fr}.service-strip{grid-template-columns:1fr 1fr}.feature-panel,.info-panel,.article-panel{padding:20px}.media.card-media{height:156px}.media.feature-media{height:220px}.footer-grid{grid-template-columns:1fr;padding:38px 16px 24px;gap:24px}.footer-bottom{display:block;padding:20px 16px 76px}.footer-bottom p+p{margin-top:8px}.related-links{gap:8px}.related-links a{font-size:14px}.site-main{padding-bottom:0}}
@media(max-width:430px){.header-inner{grid-template-columns:46px minmax(0,1fr) 88px;padding:0 10px;gap:7px}.site-logo img{height:34px;max-width:132px}.mobile-reg{min-width:84px;padding:0 8px;font-size:12px}.menu-toggle{width:40px;height:40px}.service-strip{grid-template-columns:1fr}.hero-grid{gap:24px}.hero-grid h1{font-size:30px}.section-lead{font-size:16px}.article-panel h2{font-size:23px}.quick-item strong{font-size:17px}}