html{font-size:19px;scroll-behavior:smooth}*{margin:0;padding:0;box-sizing:border-box}:root{--primary:#165DFF;--primary-dark:#0E42CC;--primary-light:#E8F3FF;--primary-softer:#84ADFF;--secondary:#F53F3F;--secondary-dark:#D82A2A;--accent:#FF7D00;--accent-dark:#E06A00;--text-dark:#1D2129;--text-medium:#4E5969;--text-light:#86909C;--bg-light:#F2F3F5;--bg-white:#FFFFFF;--bg-gray:#E9EBF0;--bg-blue-light:#F0F5FF;--border:#E5E6EB;--shadow:0 0.25rem 1.25rem rgba(0,0,0,0.08);--shadow-hover:0 0.5rem 1.875rem rgba(0,0,0,0.12);--radius:0.5rem;--transition:all 0.3s ease}body{font-family:'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--text-dark);line-height:1.6}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}.container{width:92%;max-width:75rem;margin:0 auto;padding:0 0.058rem}.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;font-weight:600;text-align:center;border-radius:var(--radius);transition:var(--transition);border:none;cursor:pointer;font-size:1rem}.card{background-color:var(--bg-white);border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition);position:relative;overflow:hidden}.card::before{content:'';position:absolute;top:0;left:0;width:100%;height:0.25rem;background:linear-gradient(90deg,var(--primary) 0%,var(--primary-softer) 100%);transform:scaleX(0);transition:transform 0.3s ease}.card:hover{transform:translateY(-0.625rem);box-shadow:var(--shadow-hover)}.card:hover::before{transform:scaleX(1)}.read-more{display:inline-flex;align-items:center;gap:0.25rem;color:var(--primary);font-weight:500;transition:var(--transition)}.read-more:hover{color:var(--primary-dark)}[class^="section-"]{padding:5rem 0}.section-title{font-size:1.375rem;font-weight:700;text-align:center;margin-bottom:2.5rem;color:var(--text-dark);position:relative;display:inline-block;left:50%;transform:translateX(-50%)}.section-title::after{content:'';position:absolute;bottom:4rem;left:50%;transform:translateX(-50%);width:3.75rem;height:0.25rem;background-color:var(--primary);border-radius:0.125rem}.section-hero{background:linear-gradient(15deg,#a389d5 0%,#165DFF 100%);color:white;position:relative;overflow:hidden}.section-hero::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}.section-hero .section-title{color:white}.section-hero .section-title::after{background-color:white}.section-features{background-color:var(--bg-white)}.section-functions{background-color:var(--bg-light)}.section-efficiency{background-color:var(--bg-white)}.section-faq{background-color:var(--bg-light)}.section-articles{background-color:var(--bg-white)}.btn-primary{background-color:var(--primary);color:white}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-0.125rem);box-shadow:0 0.25rem 0.75rem rgba(22,93,255,0.3)}.btn-secondary{background-color:var(--secondary);color:white}.btn-secondary:hover{background-color:var(--secondary-dark);transform:translateY(-0.125rem);box-shadow:0 0.25rem 0.75rem rgba(245,63,63,0.3)}.btn-accent{background-color:var(--accent);color:white}.btn-accent:hover{background-color:var(--accent-dark);transform:translateY(-0.125rem);box-shadow:0 0.25rem 0.75rem rgba(255,125,0,0.3)}.header{background-color:var(--bg-white);box-shadow:var(--shadow);position:sticky;top:0;z-index:100}.header-container{display:flex;justify-content:center;align-items:center;height:5rem;gap:3rem}.logo{font-size:1.5rem;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:0.5rem}.logo i{font-size:1.8rem}.dnf-nav-list{display:flex;gap:1.875rem}.dnf-nav-link{font-weight:500;color:var(--text-medium);padding:0.5rem 0;position:relative}.dnf-nav-link:hover{color:var(--primary)}.dnf-nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:0.125rem;background-color:var(--primary);transition:var(--transition)}.dnf-nav-link:hover::after{width:100%}.hero-container{display:flex;flex-direction:column;align-items:center;gap:2.5rem;position:relative;width:100%;max-width:75rem;margin:0 auto;padding:0 0.625rem}.hero-image{flex:1;width:100%;max-width:31.25rem;opacity:0;transform:translateY(6.125rem);animation:slideUp 0.8s ease-out forwards;animation-delay:0.3s;margin-left:auto;margin-right:auto}.hero-image img{width:100%;border-radius:var(--radius);box-shadow:0 0.625rem 1.875rem rgba(0,0,0,0.2)}.hero-content{flex:1;text-align:left;width:100%;max-width:31.25rem;margin-left:auto;margin-right:auto}.hero-title{font-size:1.875rem;margin-bottom:0.9375rem;line-height:1.3;width:100%}.hero-subtitle{font-size:1.1rem;margin-bottom:0.625rem;opacity:0.9}.hero-features{margin:1.25rem 0 1.5625rem;padding-left:0;list-style:none}.hero-feature{display:flex;align-items:center;gap:0.625rem;margin-bottom:0.625rem;justify-content:flex-start}.hero-feature i{color:#40CFFF}.hero-buttons{display:flex;gap:0.9375rem;flex-wrap:wrap;justify-content:flex-start}@keyframes slideUp{from{opacity:0;transform:translateY(6.125rem)}to{opacity:1;transform:translateY(0)}}.features-grid{display:grid;grid-template-columns:1fr;gap:1.875rem}.feature-card{padding:2.1875rem 1.5625rem;text-align:center}.feature-icon{width:5rem;height:5rem;background-color:var(--primary-light);color:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;margin:0 auto 1.5625rem;transition:var(--transition)}.feature-card:hover .feature-icon{background-color:var(--primary);color:white;transform:scale(1.1)}.feature-title{font-size:1.3rem;font-weight:600;margin-bottom:0.9375rem;color:var(--text-dark);transition:var(--transition)}.feature-card:hover .feature-title{color:var(--primary)}.feature-desc{color:var(--text-medium);line-height:1.7}.functions-grid{display:grid;grid-template-columns:1fr;gap:1.875rem}.function-item{padding:1.5625rem;display:flex;gap:1.25rem;align-items:center}.function-icon{width:3.125rem;height:3.125rem;flex-shrink:0;background-color:var(--primary-light);color:var(--primary);border-radius:0.5rem;display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin:0 auto;transition:var(--transition)}.function-item:hover .function-icon{background-color:var(--primary);color:white;transform:rotate(5deg)}.function-content h3{font-size:1.1rem;font-weight:600;margin-bottom:0.625rem;color:var(--text-dark);transition:var(--transition)}.function-item:hover .function-content h3{color:var(--primary)}.function-content p{color:var(--text-medium);font-size:0.95rem}.efficiency-grid{display:grid;grid-template-columns:1fr;gap:1.875rem}.efficiency-card{padding:2rem 1.5rem;text-align:center;border:0.0625rem solid var(--border)}.efficiency-card:hover{border-color:rgba(22,93,255,0.2)}.efficiency-icon{width:4.5rem;height:4.5rem;background-color:var(--primary-light);color:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin:0 auto 1.25rem;transition:var(--transition)}.efficiency-card:hover .efficiency-icon{background-color:var(--primary);color:white;transform:rotate(10deg)}.efficiency-value{font-size:2.5rem;font-weight:700;color:var(--primary);margin-bottom:0.625rem;position:relative;display:inline-block;line-height:1}.efficiency-value::after{content:'+';font-size:1.5rem;position:absolute;top:0;right:-1.25rem;opacity:0.8}.efficiency-label{font-size:1.1rem;font-weight:600;color:var(--text-dark);margin-bottom:0.5rem}.efficiency-desc{color:var(--text-medium);font-size:0.9rem;line-height:1.6}.efficiency-note{margin-top:3rem;text-align:center;color:var(--text-medium);font-size:0.95rem;max-width:40rem;margin-left:auto;margin-right:auto;padding-top:1.5rem;border-top:0.0625rem dashed var(--border)}.efficiency-note strong{color:var(--primary)}.faq-container{max-width:60rem;margin:0 auto;padding:2rem 1rem}.faq-list{display:grid;grid-template-columns:1fr;gap:1.25rem}.faq-item{background-color:var(--bg-white);border-radius:var(--radius);overflow:hidden;transition:all 0.3s ease;box-shadow:0 0.25rem 0.75rem rgba(0,0,0,0.05);border:0.0625rem solid transparent;position:relative}.faq-item::before{content:'';position:absolute;left:0;top:0;height:100%;width:0.1875rem;background-color:var(--primary);transform:scaleY(0);transition:transform 0.3s ease}.faq-item:hover{transform:translateY(-0.25rem);box-shadow:0 0.625rem 1.25rem rgba(0,0,0,0.08);border-color:rgba(22,93,255,0.1)}.faq-item:hover::before{transform:scaleY(1)}details.faq-item summary{width:100%;padding:1.5rem 1.875rem;text-align:left;background:none;border:none;font-size:1.15rem;font-weight:600;color:var(--text-dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;transition:background-color 0.3s ease;list-style:none}details.faq-item summary::-webkit-details-marker{display:none}details.faq-item summary:hover{background-color:rgba(22,93,255,0.03)}details.faq-item summary i{color:var(--primary);flex-shrink:0;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;background-color:var(--primary-light);border-radius:50%;transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}details.faq-item:hover summary i,details.faq-item[open] summary i{transform:rotate(180deg);background-color:var(--primary);color:white}.faq-answer{padding:0 1.875rem;max-height:0;overflow:hidden;transition:all 0.4s ease}details.faq-item[open] .faq-answer{padding:0 1.875rem 1.875rem;max-height:500px}.faq-answer-content{padding-top:1rem;border-top:0.0625rem dashed var(--border);color:var(--text-medium);line-height:1.8;font-size:1rem}.faq-answer-content p{margin:0 0 1rem 0}.faq-answer-content p:last-child{margin-bottom:0}details.faq-item:first-child{--tw-border-opacity:1;border-color:rgba(22,93,255,0.1)}details.faq-item:first-child::before{transform:scaleY(1)}.articles-container{max-width:50rem;margin:0 auto}.article-list{display:flex;flex-direction:column;gap:1.875rem;margin-bottom:1.875rem;list-style:none;padding:0}.article-item{padding:1.875rem}.article-title{font-size:1.3rem;font-weight:600;margin-bottom:0.625rem;transition:var(--transition)}.article-item:hover .article-title a{color:var(--primary)}.article-date{font-size:0.9rem;color:var(--text-light);margin-bottom:0.625rem;display:block}.article-excerpt{color:var(--text-medium);margin-bottom:0.9375rem}.read-all{text-align:center;margin-top:1.25rem}.footer{background-color:var(--text-dark);color:var(--text-light);padding:3rem 0 1.25rem}.footer-container{display:flex;flex-direction:column;align-items:center;text-align:center}.footer-logo{font-size:1.5rem;font-weight:700;color:white;margin-bottom:1.25rem;display:flex;align-items:center;gap:0.5rem}.footer-logo i{font-size:1.8rem}.dnf-footer-nav-links{display:flex;flex-wrap:wrap;justify-content:center;gap:1.875rem;margin-bottom:1.875rem}.dnf-footer-nav-link{color:var(--text-light);transition:var(--transition);position:relative;padding:0.3125rem 0}.dnf-footer-nav-link:hover{color:white}.dnf-footer-nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:0.0625rem;background-color:var(--primary-softer);transition:var(--transition)}.dnf-footer-nav-link:hover::after{width:100%}.friend-links{width:100%;margin:2.5rem 0;padding:1.5rem 0;border-top:0.0625rem solid rgba(255,255,255,0.1);border-bottom:0.0625rem solid rgba(255,255,255,0.1)}.friend-links-title{font-size:1.25rem;color:white;margin-bottom:1.5rem;font-weight:600;position:relative;display:inline-block;padding-bottom:0.5rem}.dnf-friend-nav-list{display:flex;flex-wrap:wrap;justify-content:center;gap:1.875rem}.footer-divider{width:100%;height:0.0625rem;background-color:rgba(255,255,255,0.1);margin:1.5625rem 0}.footer-copyright{font-size:0.9rem;line-height:1.8;max-width:50rem}.footer-copyright a{color:var(--primary-softer);transition:var(--transition);position:relative;padding:0 0.125rem}.footer-copyright a:hover{color:white}.footer-copyright a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:0.0625rem;background-color:var(--primary-softer);transition:var(--transition)}.footer-copyright a:hover::after{width:100%}.breadcrumb{margin:1rem 0 2.5rem;padding:0.75rem 1.25rem;background-color:var(--bg-light);border-radius:var(--radius);font-size:0.9rem}.breadcrumb-list{display:flex;flex-wrap:wrap;gap:0.75rem;color:var(--text-light);margin:0;padding:0;list-style:none}.breadcrumb-item{display:flex;align-items:center}.breadcrumb-item:not(:last-child)::after{content:'/';margin-left:0.75rem;color:var(--text-light);opacity:0.7}.breadcrumb-link{color:var(--text-medium);transition:var(--transition)}.breadcrumb-link:hover{color:var(--primary);text-decoration:underline;text-underline-offset:0.25rem}.article-detail{max-width:65rem;margin:0 auto;padding:2.5rem 3rem}.article-header{text-align:center;margin-bottom:3rem;padding-bottom:1.5rem;border-bottom:0.0625rem solid var(--border)}.article-main-title{font-size:2.2rem;line-height:1.4;font-weight:700;margin:0 auto 1.5rem;color:var(--text-dark);max-width:90%}.article-meta{display:flex;flex-wrap:wrap;gap:1.875rem;color:var(--text-light);font-size:0.95rem}.article-detail .article-meta{justify-content:center;margin:0 auto 2rem;max-width:100%}.article-item .article-meta{justify-content:flex-start;margin:0 0 1rem 0;gap:1.5rem;font-size:0.9rem}.meta-item{display:flex;align-items:center;gap:0.5rem}.meta-item i{color:var(--primary-softer)}.article-summary{background-color:var(--bg-blue-light);border-left:0.25rem solid var(--primary);padding:1.25rem 1.5rem;margin:0 auto 3rem;border-radius:0 var(--radius) var(--radius) 0;max-width:55rem}.summary-title{font-weight:600;margin-bottom:0.75rem;color:var(--primary-dark);display:flex;align-items:center;gap:0.5rem}.summary-content p{color:var(--text-medium);margin:0;text-align:left}.article-body{color:var(--text-dark);line-height:1.8;max-width:55rem;margin:0 auto}.article-body h2{font-size:1.5rem;font-weight:600;margin:2rem 0 1rem;color:var(--text-dark);padding-bottom:0.5rem;border-bottom:0.0625rem solid var(--border)}.article-body p{margin-bottom:1.25rem}.article-body ul,.article-body ol{margin:0 0 1.5rem 1.5rem;padding-left:1rem}.article-body ul{list-style-type:disc}.article-body ol{list-style-type:decimal}.article-body li{margin-bottom:0.5rem}.article-body strong{color:var(--primary-dark)}.article-navigation{display:flex;justify-content:space-between;margin-top:3.5rem;padding-top:1.5rem;border-top:0.0625rem solid var(--border);gap:1.5rem}.nav-prev,.nav-next{flex:1}.nav-link{display:block;padding:1rem;border-radius:var(--radius);transition:var(--transition);position:relative;border:0.0625rem solid transparent;overflow:hidden}.nav-link:hover{background-color:var(--primary-light);transform:translateY(-2px);box-shadow:0 0.25rem 0.75rem rgba(22,93,255,0.1);border-color:var(--primary-softer)}.nav-link::before{content:'';position:absolute;top:0;left:0;width:100%;height:0.25rem;background-color:var(--primary);transform:scaleX(0);transition:transform var(--transition);transform-origin:left center}.nav-link:hover::before{transform:scaleX(1)}.nav-label{display:block;font-size:0.85rem;color:var(--text-light);margin-bottom:0.25rem}.nav-title{display:block;font-weight:500;transition:var(--transition)}.nav-link:hover .nav-title{color:var(--primary)}.nav-prev{text-align:left}.nav-next{text-align:right}.page-title{font-size:2.2rem;font-weight:700;margin:0 auto 2rem;text-align:center;color:var(--text-dark);max-width:80%}.page-description{font-size:1.05rem;line-height:1.7;text-align:center;margin:0 auto 3.5rem;max-width:60rem;padding-bottom:1.8rem;border-bottom:0.0625rem solid var(--border);color:var(--text-medium)}.article-content{padding:1.875rem}.pagination{display:flex;justify-content:center;align-items:center;gap:0.5rem;margin:4rem auto 2rem;padding:0}.pagination-link{display:flex;align-items:center;justify-content:center;width:2.75rem;height:2.75rem;border-radius:var(--radius);color:var(--text-medium);font-weight:500;transition:var(--transition);text-decoration:none;background-color:transparent}.pagination-link:hover{background-color:var(--primary-light);color:var(--primary);transform:translateY(-2px)}.pagination-link.current{background-color:var(--primary);color:white;font-weight:600}.pagination-link.prev,.pagination-link.next{width:2.75rem;height:2.75rem;background-color:var(--bg-light);color:var(--text-medium)}.pagination-link.prev:hover,.pagination-link.next:hover{background-color:var(--primary-light);color:var(--primary)}.pagination-ellipsis{color:var(--text-light);padding:0 0.75rem;display:flex;align-items:center}@media (min-width:48rem){[class^="section-"]{padding:7rem 0}.section-hero{padding:8rem 0}.section-faq{padding:9rem 0}.section-title{font-size:2.2rem;margin-bottom:4rem}.footer{padding:5rem 0 1.25rem}}@media (min-width:61.5rem){.hero-container{flex-direction:row;text-align:left}.hero-buttons{justify-content:flex-start}}@media (min-width:48rem){.features-grid,.functions-grid,.efficiency-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:61.5rem){.features-grid{grid-template-columns:repeat(3,1fr)}.efficiency-grid{grid-template-columns:repeat(4,1fr)}}@media (max-width:47.9375rem){.header-container{flex-direction:column;height:auto;padding:0.9375rem 0;gap:1rem}.dnf-nav-list{margin-top:0.5rem;gap:0.9375rem;flex-wrap:wrap;justify-content:center}.function-item{flex-direction:column;text-align:center;align-items:center}.hero-buttons{flex-direction:column}.btn{width:100%;justify-content:center}.article-title{font-size:1.1rem}.friend-links{padding:1.5rem 1rem}.dnf-friend-nav-list{gap:1rem 1.5rem}.efficiency-value{font-size:2rem}.efficiency-label{font-size:1rem}.faq-container{padding:1rem 0.5rem}details.faq-item summary{font-size:1rem;padding:1.25rem 1.5rem}.faq-answer-content{font-size:0.95rem}details.faq-item[open] .faq-answer{padding:0 1.5rem 1.5rem}.article-detail{padding:1.5rem}.article-main-title,.page-title{font-size:1.8rem;max-width:100%}.page-title{margin-bottom:1.5rem}.article-meta{gap:1rem;flex-wrap:wrap}.article-detail .article-meta{justify-content:center}.article-body h2{font-size:1.3rem}.article-navigation{flex-direction:column}.nav-prev,.nav-next{text-align:left}.page-description{margin-bottom:2.5rem;padding-bottom:1.5rem;font-size:1rem}.pagination{gap:0.3rem}.pagination-link{width:2.5rem;height:2.5rem;font-size:0.9rem}}