:root{--primary-navy: #0f2b48;--primary-dark: #081726;--secondary-blue: #1d72b8;--accent-cyan: #0ea5e9;--accent-orange: #ea580c;--accent-green: #16a34a;--bg-main: #f8fafc;--card-bg: #ffffff;--text-main: #0f172a;--text-muted: #475569;--text-subtle: #64748b;--border-color: #e2e8f0;--border-focus: #38bdf8;--shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .08), 0 2px 4px -2px rgba(15, 23, 42, .04);--shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, .08), 0 4px 6px -4px rgba(15, 23, 42, .03);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-pill: 9999px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang TC", "Microsoft JhengHei", sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-family);background-color:var(--bg-main);color:var(--text-main);line-height:1.65;min-height:100vh;display:flex;flex-direction:column}a{color:var(--secondary-blue);text-decoration:none;transition:color .15s ease}a:hover{color:var(--primary-navy)}img{max-width:100%;height:auto;display:block}button,input,select{font-family:inherit;font-size:inherit}.container{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}.site-header{position:sticky;top:0;z-index:1000;background:#fffffffa;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.nav-container{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}.site-brand{display:inline-flex;align-items:center;gap:8px;font-size:.95rem;font-weight:700;color:var(--primary-navy);letter-spacing:-.2px;flex-shrink:0;text-decoration:none}.brand-icon{width:22px;height:22px;fill:var(--primary-navy);flex-shrink:0}.site-nav{display:flex;align-items:center;gap:8px}.nav-list{display:flex;align-items:center;list-style:none;gap:4px}.nav-item{position:relative}.nav-link{display:inline-flex;align-items:center;gap:4px;padding:8px 12px;font-size:.92rem;font-weight:600;color:var(--text-muted);border-radius:var(--radius-sm);transition:all .15s ease;white-space:nowrap}.nav-link:hover,.nav-link:focus-visible{color:var(--primary-navy);background:#f1f5f9}.nav-link[aria-current=page]{color:var(--primary-navy);background:#e2e8f0;font-weight:700}.dropdown-toggle{cursor:pointer;border:none;background:transparent}.dropdown-menu{position:absolute;top:100%;left:0;min-width:170px;background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:8px 0;list-style:none;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .2s ease;z-index:1050}.dropdown:hover .dropdown-menu,.dropdown:focus-within .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-menu .dropdown-link{display:block;padding:8px 16px;font-size:.88rem;font-weight:500;color:var(--text-main);transition:background .15s}.dropdown-menu .dropdown-link:hover,.dropdown-menu .dropdown-link[aria-current=page]{background:#f1f5f9;color:var(--primary-navy);font-weight:700}.mobile-toggle{display:none;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:6px;cursor:pointer;color:var(--primary-navy)}.breadcrumb-wrap{background:#fff;border-bottom:1px solid var(--border-color);padding:10px 0;font-size:.85rem}.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;list-style:none;gap:8px;color:var(--text-subtle)}.breadcrumbs li{display:inline-flex;align-items:center}.breadcrumbs li:not(:last-child):after{content:"›";margin-left:8px;color:#94a3b8;font-weight:700}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs a:hover{color:var(--primary-navy);text-decoration:underline}.breadcrumbs [aria-current=page]{color:var(--text-main);font-weight:600}.hero-section{background:linear-gradient(180deg,#fff,#f1f5f9);border-bottom:1px solid var(--border-color);padding:48px 0 36px}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:#e0f2fe;color:#0369a1;font-size:.82rem;font-weight:700;border-radius:var(--radius-pill);margin-bottom:16px}h1.page-title{font-size:2.1rem;font-weight:800;color:var(--primary-navy);line-height:1.3;margin-bottom:14px;letter-spacing:-.5px}.hero-subtitle{font-size:1.05rem;color:var(--text-muted);max-width:860px;margin-bottom:24px;line-height:1.7}.page-meta-bar{display:flex;align-items:center;flex-wrap:wrap;gap:16px;font-size:.84rem;color:var(--text-subtle);padding-top:12px;border-top:1px solid #e2e8f0}.main-content{flex:1 0 auto}.section-wrap{padding:48px 0;border-bottom:1px solid var(--border-color)}.section-wrap:last-of-type{border-bottom:none}.section-header{margin-bottom:32px}h2.section-title{font-size:1.6rem;font-weight:700;color:var(--primary-navy);margin-bottom:8px;letter-spacing:-.3px;position:relative;padding-left:14px}h2.section-title:before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--secondary-blue);border-radius:2px}.section-desc{font-size:.98rem;color:var(--text-muted);max-width:820px}h3.sub-title{font-size:1.25rem;font-weight:700;color:var(--primary-navy);margin:24px 0 12px}.size-hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:24px}.size-hub-card{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px;text-decoration:none;color:inherit;transition:all .2s ease;display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}.size-hub-card:hover{border-color:var(--secondary-blue);transform:translateY(-3px);box-shadow:var(--shadow-md)}.size-hub-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px}.size-number{font-size:1.8rem;font-weight:800;color:var(--primary-navy)}.size-badge{font-size:.75rem;font-weight:700;padding:2px 8px;border-radius:var(--radius-pill);background:#f1f5f9;color:var(--text-muted)}.size-hub-desc{font-size:.88rem;color:var(--text-muted);margin-bottom:12px;flex-grow:1}.size-hub-meta{font-size:.8rem;color:var(--secondary-blue);font-weight:600;display:flex;align-items:center;gap:4px}.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;margin-top:24px}.product-card{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s;position:relative}.product-card:hover{border-color:#cbd5e1;box-shadow:var(--shadow-md)}.product-badge-group{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:8px}.category-tag{font-size:.8rem;font-weight:700;padding:4px 10px;border-radius:var(--radius-pill);letter-spacing:.2px}.category-tag.tag-value{background:#fef3c7;color:#92400e}.category-tag.tag-gaming{background:#e0e7ff;color:#3730a3}.category-tag.tag-flagship{background:#fee2e2;color:#991b1b}.brand-label{font-size:.85rem;font-weight:600;color:var(--text-subtle)}.product-img-wrap{background:#f8fafc;border:1px solid #f1f5f9;border-radius:var(--radius-md);padding:16px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;min-height:140px}.product-svg-mockup{width:100%;max-width:220px;height:auto}h3.product-title{font-size:1.15rem;font-weight:700;color:var(--primary-navy);margin-bottom:8px;line-height:1.4}.product-model-code{font-size:.82rem;color:var(--text-subtle);margin-bottom:12px;font-family:monospace}.spec-pills{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.spec-pill{font-size:.78rem;background:#f1f5f9;color:var(--text-muted);padding:3px 8px;border-radius:var(--radius-sm);font-weight:500}.product-points{margin-bottom:18px;flex-grow:1}.points-title{font-size:.85rem;font-weight:700;color:var(--text-main);margin-bottom:6px}.points-list{list-style:none;font-size:.86rem;color:var(--text-muted);line-height:1.55;margin-bottom:10px}.points-list li{position:relative;padding-left:18px;margin-bottom:5px}.points-list.pros-list li:before{content:"✓";position:absolute;left:0;color:var(--accent-green);font-weight:700}.points-list.cons-list li:before{content:"△";position:absolute;left:0;color:var(--accent-orange);font-weight:700}.product-card-footer{margin-top:auto;padding-top:16px;border-top:1px solid var(--border-color)}.price-row{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}.price-label{font-size:.82rem;color:var(--text-subtle)}.product-price{font-size:1.35rem;font-weight:800;color:var(--primary-navy)}.btn-buy{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:10px 18px;background:var(--accent-orange);color:#fff;font-size:.95rem;font-weight:700;border-radius:var(--radius-md);border:none;cursor:pointer;transition:background .15s ease,transform .1s ease;text-decoration:none;text-align:center}.btn-buy:hover{background:#c2410c;color:#fff}.btn-buy.btn-pending{background:#94a3b8;cursor:not-allowed;opacity:.85}.btn-buy.btn-pending:hover{background:#94a3b8}.affiliate-note{font-size:.74rem;color:var(--text-subtle);text-align:center;margin-top:8px}.table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-top:20px}.comparison-table{width:100%;border-collapse:collapse;min-width:780px;font-size:.9rem;text-align:left}.comparison-table th{background:#f1f5f9;color:var(--primary-navy);font-weight:700;padding:12px 16px;border-bottom:2px solid var(--border-color);white-space:nowrap}.comparison-table td{padding:12px 16px;border-bottom:1px solid var(--border-color);vertical-align:middle}.comparison-table tr:hover td{background:#f8fafc}.table-buy-btn{display:inline-block;padding:6px 12px;background:var(--accent-orange);color:#fff;font-size:.82rem;font-weight:700;border-radius:var(--radius-sm);text-decoration:none;white-space:nowrap}.table-buy-btn:hover{background:#c2410c;color:#fff}.table-buy-btn.btn-pending{background:#94a3b8;cursor:not-allowed}.filter-panel{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px;margin-bottom:24px;box-shadow:var(--shadow-sm)}.filter-group-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:16px}.filter-field label{display:block;font-size:.85rem;font-weight:700;color:var(--text-main);margin-bottom:6px}.filter-select{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:#fff;color:var(--text-main);font-size:.88rem;outline:none}.filter-select:focus{border-color:var(--secondary-blue)}.filter-actions{display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid #f1f5f9;font-size:.85rem;color:var(--text-muted)}.btn-reset-filter{background:transparent;border:1px solid var(--border-color);color:var(--text-muted);padding:5px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:.82rem}.btn-reset-filter:hover{background:#f1f5f9;color:var(--primary-navy)}.calculator-box{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm);margin:24px 0}.calc-inputs-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.calc-input-group label{display:block;font-weight:700;color:var(--primary-navy);margin-bottom:8px;font-size:.95rem}.calc-slider{width:100%;height:6px;border-radius:3px;background:#e2e8f0;outline:none}.calc-val-display{display:inline-block;font-size:1.25rem;font-weight:800;color:var(--secondary-blue);margin-top:6px}.calc-result-card{background:#eff6ff;border:1px solid #bfdbfe;border-radius:var(--radius-md);padding:20px;text-align:center}.calc-result-title{font-size:.9rem;color:#1e40af;font-weight:700;margin-bottom:4px}.calc-result-size{font-size:2.2rem;font-weight:800;color:var(--primary-navy);margin-bottom:8px}.calc-result-tips{font-size:.88rem;color:#3b82f6}.checklist-card{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px;margin:24px 0;box-shadow:var(--shadow-sm)}.checklist-progress-bar{height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden;margin:12px 0 20px}.checklist-progress-fill{height:100%;background:var(--accent-green);width:0%;transition:width .3s ease}.checklist-item{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid #f1f5f9}.checklist-item:last-child{border-bottom:none}.checklist-item input[type=checkbox]{margin-top:4px;width:18px;height:18px;accent-color:var(--primary-navy);cursor:pointer}.checklist-label{cursor:pointer;font-size:.95rem}.checklist-label strong{color:var(--primary-navy)}.checklist-label p{font-size:.85rem;color:var(--text-muted);margin-top:2px}.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}.faq-item{background:#fff;border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:border-color .15s}.faq-item:hover{border-color:#cbd5e1}.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:16px 20px;background:transparent;border:none;text-align:left;font-size:1rem;font-weight:700;color:var(--primary-navy);cursor:pointer;gap:12px}.faq-icon{width:18px;height:18px;fill:none;stroke:var(--text-muted);stroke-width:2.5;transition:transform .2s ease;flex-shrink:0}.faq-item.is-open .faq-icon{transform:rotate(180deg);stroke:var(--primary-navy)}.faq-answer{display:none;padding:0 20px 18px;font-size:.92rem;color:var(--text-muted);line-height:1.65;border-top:1px solid #f8fafc}.faq-item.is-open .faq-answer{display:block}.prose-block{max-width:860px;font-size:1rem;color:var(--text-main);line-height:1.75}.prose-block p{margin-bottom:16px}.prose-block ul,.prose-block ol{margin:16px 0 20px 24px}.prose-block li{margin-bottom:8px}.callout-box{background:#f0fdf4;border-left:4px solid #22c55e;padding:16px 20px;border-radius:0 var(--radius-md) var(--radius-md) 0;margin:20px 0;font-size:.92rem}.callout-box.warning{background:#fffbeb;border-left-color:#f59e0b}.callout-box strong{color:var(--primary-navy)}.site-footer{background:var(--primary-dark);color:#94a3b8;padding:48px 0 24px;font-size:.88rem;margin-top:auto}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px;margin-bottom:36px}.footer-brand h4{color:#fff;font-size:1.1rem;margin-bottom:12px}.footer-brand p{line-height:1.6;max-width:320px}.footer-col h5{color:#fff;font-size:.92rem;margin-bottom:14px;font-weight:700}.footer-links{list-style:none;display:flex;flex-direction:column;gap:8px}.footer-links a{color:#cbd5e1;text-decoration:none;transition:color .15s}.footer-links a:hover{color:#fff}.footer-bottom{padding-top:24px;border-top:1px solid #1e293b;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem}.footer-disclosure{font-size:.78rem;color:#64748b;line-height:1.5;margin-top:12px}.back-to-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;background:var(--primary-navy);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all .2s ease;z-index:999}.back-to-top.is-visible{opacity:.9;visibility:visible}.back-to-top:hover{opacity:1;transform:translateY(-3px)}@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:768px){.mobile-toggle{display:block}.site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-lg);padding:16px 20px;flex-direction:column;align-items:flex-start;gap:8px}.site-nav.is-mobile-open{display:flex}.nav-list{flex-direction:column;width:100%;align-items:stretch;gap:4px}.nav-link{width:100%;padding:10px 12px}.dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;background:#f8fafc;border-radius:var(--radius-sm);margin-left:12px;padding:4px 0;display:none}.dropdown.is-expanded .dropdown-menu{display:block}h1.page-title{font-size:1.65rem}.calc-inputs-grid,.products-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:24px}}