:root{--c-bg:#fdfaf4;--c-bg-alt:#f6efe1;--c-surface:#fff;--c-surface-soft:#fffcf5;--c-primary:#df8b1f;--c-primary-hover:#c2740f;--c-primary-deep:#a5600b;--c-primary-soft:#fdf1dc;--c-primary-line:#f0d6a4;--c-clay:#b0562e;--c-moss:#4e7a38;--c-rust:#c0402b;--c-text:#2c2216;--c-text-mid:#6a5943;--c-text-soft:#9c8a72;--c-border:#ece1ce;--c-border-strong:#dcc9a8;--r-sm:8px;--r-md:12px;--r-lg:18px;--r-xl:26px;--r-pill:999px;--sh-xs:0 1px 2px #5c3e160d;--sh-sm:0 2px 8px #5c3e160f;--sh-md:0 6px 18px #5c3e1617;--sh-lg:0 16px 40px #5c3e1624;--font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;--maxw:1240px}@font-face{font-family:Alimama ShuHeiTi;src:url(https://acc-1258344699.cos.accelerate.myqcloud.com/web/website/assets/AlimamaShuHeiTi-Bold.woff2)format("woff2");font-weight:700;font-style:normal;font-display:swap}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--c-bg);color:var(--c-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;line-height:1.65}main{background-color:var(--c-bg);flex:1}h1,h2,h3,h4{color:var(--c-text);margin:0;line-height:1.3}h1{font-family:"Alimama ShuHeiTi",var(--font-sans);font-weight:700}a{color:var(--c-primary-deep);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}button{font-family:inherit}::selection{background:var(--c-primary-line);color:var(--c-text)}:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;display:grid}.section{padding:64px 0 8px}.section-title{letter-spacing:-.01em;margin-bottom:20px;font-size:1.5rem;font-weight:700}.topbar{z-index:50;-webkit-backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--c-border);background:#fdfaf4db;position:sticky;top:0}.topbar-inner{justify-content:space-between;align-items:center;gap:16px;min-height:60px;display:flex}.brand{color:var(--c-text);letter-spacing:-.01em;align-items:center;gap:10px;font-size:1.05rem;font-weight:700;display:inline-flex}.brand:hover{text-decoration:none}.brand-mark{background:linear-gradient(145deg,var(--c-primary)0%,var(--c-primary-hover)100%);color:#fff;width:30px;height:30px;box-shadow:var(--sh-xs);border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;font-size:.95rem;display:inline-flex}.main-nav{align-items:center;gap:6px;display:flex}.nav-link{color:var(--c-text-mid);border-radius:var(--r-pill);align-items:center;gap:7px;padding:8px 14px;font-size:.92rem;font-weight:600;transition:background-color .18s,color .18s;display:inline-flex}.nav-link:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);text-decoration:none}.nav-link.active{background:var(--c-primary);color:#fff}.lang-switch{background:var(--c-bg-alt);border:1px solid var(--c-border);border-radius:var(--r-pill);align-items:center;gap:2px;padding:3px;display:inline-flex}.lang-btn{color:var(--c-text-soft);border-radius:var(--r-pill);cursor:pointer;background:0 0;border:none;padding:5px 12px;font-size:.8rem;font-weight:600;transition:all .18s}.lang-btn:hover{color:var(--c-text)}.lang-btn.active{background:var(--c-surface);color:var(--c-primary-deep);box-shadow:var(--sh-xs)}.site-header{color:var(--c-text);background:radial-gradient(520px 180px at 15% 0%,#f8cb572e,transparent 65%),radial-gradient(480px 180px at 88% 0%,#e9a32b24,transparent 62%),var(--c-bg);isolation:isolate;position:relative;overflow:hidden}.header-inner{z-index:2;text-align:center;padding:28px 24px 32px;position:relative}.header-title{letter-spacing:-.02em;color:var(--c-text);margin-bottom:8px;font-size:clamp(1.6rem,3.6vw,2.2rem);font-weight:700}.header-subtitle{color:var(--c-text-mid);max-width:640px;margin:0 auto;font-size:clamp(.88rem,1.8vw,1rem)}.contact-body{flex-direction:column;gap:28px;display:flex}.contact-block-title{color:var(--c-text);align-items:center;gap:10px;margin:0 0 14px;font-size:1.1rem;font-weight:700;display:flex}.contact-block-title i{color:var(--c-primary);font-size:1rem}.contact-cards{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;display:grid}.contact-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-xs);align-items:center;gap:14px;padding:18px;transition:all .18s;display:flex}.contact-card:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-sm);transform:translateY(-2px)}.cc-icon{background:var(--c-primary-soft);width:44px;height:44px;color:var(--c-primary-deep);border-radius:var(--r-md);flex-shrink:0;justify-content:center;align-items:center;font-size:1.1rem;display:flex}.cc-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.cc-label{color:var(--c-text-soft);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem;font-weight:600}.cc-value{font-family:var(--font-mono);color:var(--c-text);word-break:break-all;font-size:.95rem;font-weight:600}.cc-copy{background:var(--c-primary-soft);border:1px solid var(--c-primary-line);color:var(--c-primary-deep);border-radius:var(--r-pill);cursor:pointer;flex-shrink:0;align-items:center;gap:6px;padding:7px 13px;font-size:.8rem;font-weight:600;transition:all .16s;display:inline-flex}.cc-copy:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}.cc-copy.copied{background:var(--c-moss);color:#fff;border-color:var(--c-moss)}.shop-cards{grid-template-columns:repeat(auto-fill,260px);justify-content:start;align-items:stretch;gap:14px;display:grid}.shop-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-xs);color:inherit;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:20px 14px;transition:all .18s;display:flex}.shop-card:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-md);text-decoration:none;transform:translateY(-2px)}.sc-icon{justify-content:center;align-items:center;width:240px;height:50px;display:flex}.sc-icon img{object-fit:contain;width:auto;max-width:240px;height:36px;max-height:50px;display:block}.shop-notes{flex-direction:column;gap:8px;max-width:640px;margin:14px 0 0;padding:0;list-style:none;display:flex}.shop-notes li{color:var(--c-rust);text-align:left;align-items:flex-start;gap:8px;font-size:.82rem;font-weight:600;line-height:1.6;display:flex}.shop-notes li i{flex:none;margin-top:3px;font-size:.9rem}.buy-steps-2{counter-reset:step;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.buy-steps-2 li{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-xs);color:var(--c-text-mid);align-items:flex-start;gap:14px;padding:18px;font-size:.92rem;line-height:1.6;display:flex}.step-n-2{background:var(--c-primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:.85rem;font-weight:700;display:flex}.escrow-note{background:var(--c-primary-soft);border:1px solid var(--c-primary-line);border-radius:var(--r-lg);align-items:flex-start;gap:14px;padding:18px 20px;display:flex}.escrow-note i{color:var(--c-primary-deep);flex-shrink:0;margin-top:2px;font-size:1.2rem}.escrow-note p{color:var(--c-text);margin:0;font-size:.9rem;line-height:1.7}.mobile-nav{display:none}.toolbar{z-index:40;-webkit-backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--c-border);background:#fdfaf4e6;padding:14px 0;position:sticky;top:60px}.toolbar-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;display:flex}.filter-group{flex-wrap:wrap;align-items:center;gap:7px;display:flex}.filter-btn{border:1px solid var(--c-border-strong);background:var(--c-surface);color:var(--c-text-mid);border-radius:var(--r-pill);cursor:pointer;font-size:.86rem;font-weight:600;font-family:var(--font-mono);padding:7px 15px;transition:all .16s}.filter-btn:hover{border-color:var(--c-primary);color:var(--c-primary-deep);background:var(--c-primary-soft)}.filter-btn.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--sh-xs)}.sort-group{align-items:center;gap:10px;display:flex}.sort-group label{color:var(--c-text-soft);white-space:nowrap;font-size:.85rem;font-weight:600}.result-count{font-size:.82rem;font-weight:700;font-family:var(--font-mono);color:var(--c-text-soft);background:var(--c-bg-alt);border:1px solid var(--c-border);border-radius:var(--r-pill);white-space:nowrap;padding:5px 11px}.sort-group select{appearance:none;border:1px solid var(--c-border-strong);border-radius:var(--r-pill);background-color:var(--c-surface);color:var(--c-text);cursor:pointer;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23DF8B1F' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline 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.2s;display:flex;position:relative}.domain-card:hover{box-shadow:var(--sh-md);border-color:var(--c-primary-line);transform:translateY(-3px)}.dc-head{justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:10px;display:flex}.dc-name{font-family:var(--font-mono);letter-spacing:-.02em;color:var(--c-text);word-break:break-all;font-size:1.22rem;font-weight:700;line-height:1.25}.dc-name:hover{color:var(--c-primary-deep);text-decoration:none}.dc-name .dc-ext{color:var(--c-primary);font-weight:600}.dc-name i{color:var(--c-text-soft);vertical-align:2px;margin-left:6px;font-size:.62em}.dc-badges{flex-shrink:0;gap:5px;display:inline-flex}.badge{border-radius:var(--r-pill);letter-spacing:.02em;white-space:nowrap;padding:3px 9px;font-size:.68rem;font-weight:700;display:inline-block}.badge-featured{background:var(--c-primary-soft);color:var(--c-primary-deep);border:1px solid var(--c-primary-line)}.badge-discount{color:var(--c-clay);background:#fbe9e2;border:1px solid #f0cdbc}.dc-meaning{color:var(--c-text-mid);flex:1;margin:0 0 16px;font-size:.9rem;line-height:1.6}.dc-meta{flex-wrap:wrap;gap:6px;margin:0 0 16px;padding:0;list-style:none;display:flex}.dc-meta li{background:var(--c-surface-soft);border:1px solid var(--c-border);border-radius:var(--r-sm);align-items:center;gap:5px;padding:4px 10px;font-size:.76rem;display:inline-flex}.dc-meta .meta-k{color:var(--c-text-soft);font-weight:600}.dc-meta .meta-v{color:var(--c-text);font-weight:600;font-family:var(--font-mono);font-size:.78rem}.dc-foot{border-top:1px dashed var(--c-border);justify-content:space-between;align-items:center;gap:12px;padding-top:14px;display:flex}.dc-price{font-family:var(--font-mono);color:var(--c-moss);letter-spacing:-.02em;font-size:1.4rem;font-weight:800;line-height:1}.dc-price .cur{margin-right:1px;font-size:.72em;font-weight:700}.dc-price.negotiable{font-family:var(--font-sans);color:var(--c-text-soft);font-size:1rem}.dc-cta{background:var(--c-primary-soft);color:var(--c-primary-deep);border:1px solid var(--c-primary-line);border-radius:var(--r-pill);white-space:nowrap;align-items:center;gap:6px;padding:8px 15px;font-size:.83rem;font-weight:700;transition:all .16s;display:inline-flex}.dc-cta:hover{background:var(--c-primary);border-color:var(--c-primary);color:#fff;text-decoration:none}.dc-cta i{font-size:.8em;transition:transform .16s}.dc-cta:hover i{transform:translate(2px)}.pagination{flex-wrap:wrap;justify-content:center;align-items:center;gap:7px;margin:34px 0 8px;display:flex}.pagination button,.pagination span.page-gap{border:1px solid var(--c-border);background:var(--c-surface);min-width:38px;height:38px;color:var(--c-text-mid);border-radius:var(--r-md);cursor:pointer;font-size:.88rem;font-weight:600;font-family:var(--font-mono);justify-content:center;align-items:center;padding:0 13px;transition:all .16s;display:inline-flex}.pagination button:hover:not(:disabled):not(.active){border-color:var(--c-primary);color:var(--c-primary-deep);background:var(--c-primary-soft)}.pagination button.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:var(--sh-xs)}.pagination button:disabled{opacity:.38;cursor:not-allowed}.pagination span.page-gap{cursor:default;color:var(--c-text-soft);background:0 0;border:none;min-width:auto;padding:0 4px}.sold-block{margin-top:12px}.sold-toggle{cursor:pointer;color:var(--c-text);letter-spacing:-.01em;background:0 0;border:none;align-items:center;gap:9px;padding:0;font-size:1.4rem;font-weight:700;display:inline-flex}.sold-toggle:hover{color:var(--c-primary-deep)}.sold-toggle .count{font-size:.75rem;font-weight:700;font-family:var(--font-mono);color:var(--c-primary-deep);background:var(--c-primary-soft);border:1px solid var(--c-primary-line);border-radius:var(--r-pill);padding:3px 10px}.sold-toggle i{color:var(--c-text-soft);font-size:.62em}.sold-list{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin:18px 0 0;padding:0;list-style:none;display:grid}.sold-item{background:var(--c-surface-soft);border:1px dashed var(--c-border-strong);border-radius:var(--r-md);justify-content:space-between;align-items:center;gap:10px;padding:11px 14px;display:flex}.sold-item .sold-name{font-family:var(--font-mono);color:var(--c-text-soft);text-decoration:line-through;-webkit-text-decoration-color:var(--c-border-strong);text-decoration-color:var(--c-border-strong);word-break:break-all;font-size:.95rem;font-weight:600}.sold-item .sold-price{font-family:var(--font-mono);color:var(--c-moss);white-space:nowrap;flex-shrink:0;font-size:.86rem;font-weight:700}.sold-item .sold-price.unknown{color:var(--c-text-soft);font-size:.78rem;font-weight:600}.faq-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-top:20px;display:grid}.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-xs);padding:24px;transition:transform .2s,box-shadow .2s,border-color .2s}.faq-item:hover{box-shadow:var(--sh-md);border-color:var(--c-primary-line);transform:translateY(-3px)}.faq-item h3{color:var(--c-text);align-items:center;gap:10px;margin-bottom:10px;font-size:1.02rem;font-weight:700;display:flex}.faq-item h3 i{color:var(--c-primary);flex-shrink:0;font-size:.95em}.faq-item p{color:var(--c-text-mid);margin:0;font-size:.92rem;line-height:1.72}.site-footer{color:#e8dcc8;background:linear-gradient(160deg,#34281a 0%,#46351f 55%,#513d24 100%);margin-top:72px;padding:52px 0 32px;font-size:.9rem}.footer-brand{align-items:center;gap:11px;margin-bottom:18px;display:flex}.footer-brand .brand-mark{background:linear-gradient(145deg,var(--c-primary)0%,#f0a93f 100%)}.footer-brand strong{color:#fdf6e8;letter-spacing:-.01em;font-size:1.05rem}.footer-grid{border-bottom:1px solid #e8dcc829;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:28px;display:grid}.footer-col h4{letter-spacing:.08em;text-transform:uppercase;color:#c6b394;margin:0 0 12px;font-size:.78rem;font-weight:700}.footer-col p,.footer-col li{color:#d9cbb2;margin:0 0 8px;line-height:1.7}.footer-col ul{margin:0;padding:0;list-style:none}.footer-col a{color:#e8dcc8;transition:color .16s}.footer-col a:hover{color:#f5c24e;text-decoration:none}.footer-email{font-family:var(--font-mono);color:#f5c24e;font-size:.92rem;font-weight:600}.footer-note{color:#bcae96;padding:22px 0 0;font-size:.82rem;line-height:1.75}.footer-note p{margin:0 0 8px}.footer-note strong{color:#d9cbb2}.footer-bottom{color:#a8977c;border-top:1px solid #e8dcc829;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;padding-top:22px;font-size:.82rem;display:flex}.footer-bottom a{color:#c6b394}.footer-bottom a:hover{color:#f5c24e}.footer-badges{flex-wrap:wrap;align-items:center;gap:12px;margin-top:18px;display:flex}.detail-wrap{padding:36px 0 20px}.breadcrumb{color:var(--c-text-soft);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px;font-size:.83rem;display:flex}.breadcrumb a{color:var(--c-text-mid)}.breadcrumb a:hover{color:var(--c-primary-deep)}.breadcrumb .sep{color:var(--c-border-strong)}.detail-grid{grid-template-columns:1.55fr 1fr;align-items:start;gap:26px;display:grid}.detail-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-xl);box-shadow:var(--sh-sm);padding:30px}.detail-title{font-family:var(--font-mono);letter-spacing:-.03em;word-break:break-all;margin-bottom:8px;font-size:clamp(1.8rem,4.6vw,2.6rem);font-weight:800}.detail-title .dc-ext{color:var(--c-primary)}.detail-tagline{color:var(--c-text-mid);margin:0 0 22px;font-size:1rem}.spec-list{border-top:1px solid var(--c-border);margin:0;padding:0;list-style:none}.spec-list li{border-bottom:1px solid var(--c-border);justify-content:space-between;align-items:center;gap:16px;padding:13px 0;font-size:.92rem;display:flex}.spec-list .spec-k{color:var(--c-text-soft);flex-shrink:0;font-weight:600}.spec-list .spec-v{color:var(--c-text);font-weight:600;font-family:var(--font-mono);text-align:right;word-break:break-all}.buy-panel{border:1px solid var(--c-primary-line);border-radius:var(--r-xl);box-shadow:var(--sh-sm);background:linear-gradient(165deg,#fffbf2 0%,#fdf3e0 100%);padding:26px;position:sticky;top:88px}.buy-price{font-family:var(--font-mono);color:var(--c-moss);letter-spacing:-.03em;margin-bottom:4px;font-size:2.3rem;font-weight:800;line-height:1.1}.buy-price .cur{margin-right:2px;font-size:.6em;font-weight:700}.buy-price.negotiable{font-family:var(--font-sans);color:var(--c-text-mid);font-size:1.5rem}.buy-note{color:var(--c-text-soft);margin:0 0 20px;font-size:.82rem}.buy-btn{background:var(--c-primary);color:#fff;border-radius:var(--r-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:9px;width:100%;padding:13px 20px;font-size:.98rem;font-weight:700;transition:all .16s;display:flex;box-shadow:0 4px 14px #df8b1f52}.buy-btn:hover{background:var(--c-primary-hover);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 22px #df8b1f66}.buy-btn.copied{background:var(--c-moss);box-shadow:0 4px 14px #4e7a3852}.buy-alt{color:var(--c-text-mid);justify-content:center;align-items:center;gap:10px;margin-top:12px;font-size:.86rem;display:flex}.buy-alt code{font-family:var(--font-mono);border:1px solid var(--c-primary-line);border-radius:var(--r-sm);color:var(--c-primary-deep);background:#ffffffb8;padding:3px 9px;font-size:.84rem;font-weight:600}.buy-steps{border-top:1px solid var(--c-primary-line);margin:22px 0 0;padding:20px 0 0;list-style:none}.buy-steps li{color:var(--c-text-mid);gap:11px;margin-bottom:13px;font-size:.86rem;line-height:1.6;display:flex}.buy-steps li:last-child{margin-bottom:0}.buy-steps .step-n{background:var(--c-primary);color:#fff;width:21px;height:21px;font-size:.72rem;font-weight:700;font-family:var(--font-mono);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;display:inline-flex}.detail-section{margin-top:34px}.detail-section h2{letter-spacing:-.01em;margin-bottom:14px;font-size:1.22rem;font-weight:700}.detail-section p{color:var(--c-text-mid);margin:0 0 12px;font-size:.94rem;line-height:1.78}.detail-section p:last-child{margin-bottom:0}.detail-section code{font-family:var(--font-mono);background:var(--c-primary-soft);border:1px solid var(--c-primary-line);border-radius:var(--r-sm);color:var(--c-primary-deep);padding:2px 7px;font-size:.86em;font-weight:600}.detail-analysis{border-left:3px solid var(--c-primary);padding-left:18px}.detail-analysis-text{color:var(--c-text)!important;font-size:.96rem!important;line-height:1.85!important}.contact-page{padding:28px 0 48px}.contact-page .breadcrumb{margin-bottom:22px}.contact-title{letter-spacing:-.02em;margin-bottom:12px;font-size:clamp(1.7rem,4vw,2.4rem);font-weight:700}.contact-intro{color:var(--c-text-mid);max-width:680px;margin:0 0 28px;font-size:.98rem;line-height:1.75}.related-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.related-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);padding:16px 18px;transition:all .18s;display:block}.related-card:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-sm);text-decoration:none;transform:translateY(-2px)}.related-card .rc-name{font-family:var(--font-mono);color:var(--c-text);word-break:break-all;font-size:1rem;font-weight:700}.related-card:hover .rc-name{color:var(--c-primary-deep)}.related-card .rc-meta{color:var(--c-text-soft);justify-content:space-between;align-items:center;gap:10px;margin-top:7px;font-size:.82rem;display:flex}.related-card .rc-price{font-family:var(--font-mono);color:var(--c-moss);font-weight:700}.knowledge-intro{text-align:center;padding:18px 0 34px}.knowledge-intro h1{letter-spacing:-.02em;margin-bottom:12px;font-size:clamp(1.7rem,4vw,2.4rem);font-weight:700}.knowledge-intro p{color:var(--c-text-mid);max-width:720px;margin:0 auto;font-size:1.05rem}.knowledge-section{padding:52px 0}.knowledge-section.alt{background:var(--c-bg-alt);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}.knowledge-section.conclusion{text-align:center;border-top:1px solid var(--c-primary-line);background:linear-gradient(165deg,#fffbf2 0%,#fdf3e0 100%)}.knowledge-section h2{letter-spacing:-.01em;margin-bottom:24px;font-size:clamp(1.3rem,3vw,1.65rem);font-weight:700}.knowledge-section.conclusion h2{margin-bottom:14px}.knowledge-section.conclusion p{max-width:760px;color:var(--c-text-mid);margin:0 auto;font-size:1.02rem;line-height:1.85}.knowledge-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}.knowledge-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-xs);padding:26px;transition:transform .2s,box-shadow .2s,border-color .2s}.knowledge-card:hover{box-shadow:var(--sh-md);border-color:var(--c-primary-line);transform:translateY(-3px)}.card-icon{border-radius:var(--r-md);background:linear-gradient(145deg,var(--c-primary)0%,var(--c-primary-hover)100%);color:#fff;justify-content:center;align-items:center;width:46px;height:46px;margin-bottom:16px;font-size:1.15rem;display:flex;box-shadow:0 3px 10px #df8b1f42}.knowledge-card h3{margin-bottom:10px;font-size:1.05rem;font-weight:700}.knowledge-card p{color:var(--c-text-mid);margin:0;font-size:.92rem;line-height:1.78}.case-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px;display:grid}.case-card{background:var(--c-surface);border:1px solid var(--c-primary-line);border-radius:var(--r-lg);box-shadow:var(--sh-xs);padding:22px;transition:transform .2s,box-shadow .2s}.case-card:hover{box-shadow:var(--sh-md);transform:translateY(-3px)}.case-header{border-bottom:1px dashed var(--c-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;padding-bottom:12px;display:flex}.case-domain{font-family:var(--font-mono);color:var(--c-text);word-break:break-all;font-size:1.15rem;font-weight:700}.case-price{background:linear-gradient(145deg,var(--c-primary)0%,var(--c-primary-hover)100%);color:#fff;border-radius:var(--r-pill);font-family:var(--font-mono);white-space:nowrap;padding:5px 13px;font-size:.85rem;font-weight:700}.case-card p{color:var(--c-text-mid);margin:0;font-size:.92rem;line-height:1.75}.notification{background:var(--c-surface);color:var(--c-primary-deep);border-radius:var(--r-md);border:1px solid var(--c-primary-line);box-shadow:var(--sh-lg);z-index:9999;justify-content:space-between;align-items:center;gap:14px;max-width:min(440px,100vw - 32px);padding:12px 18px;font-size:.9rem;font-weight:600;animation:.28s ease-out notifyIn;display:none;position:fixed;top:20px;left:50%;transform:translate(-50%)}.notification.show{display:flex}.notification.hide{animation:.28s ease-out forwards notifyOut}@keyframes notifyIn{0%{opacity:0;transform:translate(-50%,-14px)}to{opacity:1;transform:translate(-50%)}}@keyframes notifyOut{0%{opacity:1;transform:translate(-50%)}to{opacity:0;transform:translate(-50%,-14px)}}.notification-text{word-break:break-word}.notification-close{color:var(--c-text-soft);cursor:pointer;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;padding:0;font-size:18px;line-height:1;transition:color .16s;display:inline-flex}.notification-close:hover{color:var(--c-text)}@media (max-width:900px){.detail-grid{grid-template-columns:1fr}.buy-panel{position:static}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}@media (max-width:720px){.container{padding:0 16px}.card-grid{grid-template-columns:1fr;gap:16px}.header-inner{padding:40px 16px 44px}.toolbar{position:static}.toolbar-inner{flex-direction:column;align-items:stretch;gap:12px}.filter-group{scrollbar-width:none;flex-wrap:nowrap;justify-content:flex-start;padding-bottom:2px;overflow-x:auto}.filter-group::-webkit-scrollbar{display:none}.filter-btn{flex-shrink:0}.sort-group{justify-content:space-between}.sort-group select{flex:1;margin-left:8px}.section{padding:40px 0 4px}.detail-card,.buy-panel{border-radius:var(--r-lg);padding:22px}.footer-grid{grid-template-columns:1fr;gap:24px}.knowledge-section{padding:38px 0}.sold-list{grid-template-columns:1fr 1fr}}@media (max-width:460px){.topbar-inner{gap:10px;min-height:54px}.brand span.brand-text,.main-nav{display:none}.mobile-nav{justify-content:center;align-items:center;gap:10px;margin-bottom:22px;display:flex}.mobile-nav-link{border-radius:var(--r-pill);color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#ffffff26;border:1.5px solid #ffffff8c;align-items:center;gap:6px;padding:7px 16px;font-size:.85rem;font-weight:600;display:inline-flex}.mobile-nav-link:hover{color:var(--c-primary-deep);background:#fff;text-decoration:none}.mobile-nav-link.active{color:var(--c-primary-deep);background:#fff;border-color:#fff}.header-inner{padding:20px 18px 24px}.header-title{margin-bottom:6px}.header-subtitle{margin-bottom:0}.contact-card,.shop-card{flex-wrap:wrap}.cc-copy{justify-content:center;width:100%}.sold-list{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}