:root{--p-paper:oklch(98% .004 90);--p-ink:oklch(17% .008 90);--p-gray:oklch(92% .006 90);--bg:var(--p-paper);--text:var(--p-ink);--accent:var(--p-ink);--button-bg:var(--p-ink);--button-text:var(--p-paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}a{color:inherit;text-decoration:none}a:focus-visible,summary:focus-visible{outline:3px double var(--p-ink);outline-offset:4px}.wrap{width:min(1300px,calc(100% - 28px));margin:auto}.site-header{border-bottom:3px solid var(--p-ink)}.header-in{min-height:84px;display:flex;justify-content:space-between;align-items:stretch;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:23px;font-weight:900}.brand svg{width:31px}nav{display:flex;align-items:stretch;flex-wrap:wrap}nav a{display:flex;align-items:center;min-height:44px;padding:0 15px;border-left:1px solid var(--p-ink);font-size:14px;font-weight:750}nav a:hover{background:var(--p-gray)}nav a.active{background:var(--p-ink);color:var(--p-paper)}.hero{padding:56px 0 42px;border-bottom:3px solid var(--p-ink)}.hero-grid{display:grid;grid-template-columns:38.1% 61.9%;align-items:end}.hero-copy{padding-right:38px}.hero h1{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(39px,5.4vw,74px);line-height:1.08;letter-spacing:-.04em;margin:0 0 24px}.hero p{font-size:18px;max-width:63ch}.eyebrow{font-size:13px;letter-spacing:.18em;font-weight:850;border-top:1px solid var(--p-ink);padding-top:12px;margin-bottom:22px}.hero .side{border:2px solid var(--p-ink);padding:30px;margin-left:20px;background:var(--p-gray)}.side h2{font-family:inherit!important;font-size:18px!important;margin:0 0 14px!important}.side strong{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:36px}.side p{font-size:14px}.actions{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border:2px solid var(--p-ink);border-radius:0;font-weight:800;cursor:pointer;transition:background .16s ease-out,color .16s ease-out}.btn-primary{background:var(--button-bg);color:var(--button-text)}.btn-primary:hover{background:var(--p-paper);color:var(--p-ink)}.btn-secondary{background:var(--p-paper)}.btn-secondary:hover{background:var(--p-gray)}.jump-note{font-size:13px;margin:10px 0 0}.content{padding:28px 0 66px}.section{padding:42px 0;border-bottom:1px solid var(--p-ink)}.section h2{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(27px,3.2vw,42px);line-height:1.25;margin:0 0 24px;max-width:28ch}.section h3{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:21px;margin:0 0 10px}.section p{max-width:73ch;margin:0 0 16px}.section ul,.section ol{max-width:72ch;padding-left:22px}.section li{margin:8px 0}.split{display:grid;grid-template-columns:38.1% 61.9%;gap:34px}.three{display:grid;grid-template-columns:38.1% 30.95% 30.95%;border:2px solid var(--p-ink)}.card{padding:25px;border-right:1px solid var(--p-ink)}.card:last-child{border-right:0}.card:nth-child(2){background:var(--p-gray)}.card .price{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:38px;font-weight:900;margin:12px 0}.band{margin:28px 0;padding:30px;border:3px solid var(--p-ink);background:var(--p-gray)}.table-wrap{overflow-x:auto;border:2px solid var(--p-ink)}table{width:100%;min-width:660px;border-collapse:collapse}th,td{text-align:left;vertical-align:top;padding:16px;border-bottom:1px solid var(--p-ink);border-right:1px solid var(--p-ink)}th{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:17px;background:var(--p-gray)}tr:last-child td{border-bottom:0}th:last-child,td:last-child{border-right:0}.text-link{font-weight:850;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}.faq details{border-top:1px solid var(--p-ink);padding:15px 0}.faq details:last-child{border-bottom:1px solid var(--p-ink)}.faq summary{cursor:pointer;min-height:44px;padding:9px 0;font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:18px;font-weight:850}.faq p{margin:8px 0;padding-right:7%}.cta{margin:34px 0 0;padding:32px;border:3px solid var(--p-ink);display:grid;grid-template-columns:38.1% 61.9%;align-items:center}.cta h2{margin:0!important;font-size:30px!important}.cta p{margin:0 0 16px!important}.cta .btn-primary{justify-self:start}.footer{padding:34px 0 46px;font-size:14px}.footer-in{display:grid;grid-template-columns:38.1% 61.9%;gap:20px}.footer a{font-weight:850;text-decoration:underline}.muted{color:oklch(39% .008 90)}@media(max-width:850px){.header-in{flex-direction:column;gap:0}.brand{min-height:62px}.header-in nav{border-top:1px solid var(--p-ink)}nav a{padding:0 10px;font-size:12px}.hero-grid,.split,.three,.cta,.footer-in{grid-template-columns:1fr}.hero-copy{padding-right:0}.hero .side{margin:28px 0 0}.card{border-right:0;border-bottom:1px solid var(--p-ink)}.card:last-child{border-bottom:0}.section{padding:34px 0}.wrap{width:calc(100% - 20px)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}