:root{--font-sans:"Aptos","Segoe UI Variable Text",-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei UI","Helvetica Neue",Arial,sans-serif;--font-display:"Aptos Display","Segoe UI Variable Display",-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei UI","Helvetica Neue",Arial,sans-serif;--ink:#12201d;--navy:#1f3a35;--blue:#52776b;--gold:#b58a57;--gold-h:#9f7545;--green:#52776b;--light:#edf4ef;--paper:#fffdf8;--muted:#68766f;--line:rgba(18,32,29,.13);--shadow:0 22px 60px rgba(18,32,29,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}html[lang="zh-CN"]{--font-sans:"Microsoft YaHei UI","Noto Sans SC","Segoe UI",Arial,sans-serif;--font-display:"Microsoft YaHei UI","Noto Sans SC","Segoe UI",Arial,sans-serif}html[lang="th"]{--font-sans:"Leelawadee UI","Noto Sans Thai","Segoe UI",Arial,sans-serif;--font-display:"Leelawadee UI","Noto Sans Thai","Segoe UI",Arial,sans-serif}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font-sans);font-size:16px;line-height:1.7;font-kerning:normal;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.topbar{padding:8px 20px;background:var(--ink);color:rgba(255,255,255,.74);text-align:center;font-size:.78rem}header{position:sticky;top:0;z-index:20;background:rgba(255,253,248,.94);color:var(--ink);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;flex:0 0 auto}.brand-logo{display:block;width:193px;height:auto}footer .brand-logo{width:208px}.navlinks{display:flex;gap:25px;color:#52615b;font-size:.89rem;font-weight:600}.navlinks a:hover{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:0 19px;border-radius:999px;background:var(--navy);color:#fff;font-size:.94rem;font-weight:650}.btn:hover{background:var(--blue)}
.hero{padding:90px 0 70px;background:linear-gradient(160deg,#fffdf8,#f7f4ee 55%,#edf4ef);color:var(--ink)}.hero .lede{color:#56665f!important}.hero .kicker{color:var(--blue)}.kicker{margin:0 0 16px;color:var(--blue);font-size:.74rem;font-weight:700;letter-spacing:0;text-transform:uppercase}h1,h2,h3{margin:0;font-family:var(--font-display);letter-spacing:0}h1{max-width:900px;font-size:clamp(2.5rem,4.8vw,4.4rem);font-weight:650;line-height:1.07}h2{font-size:clamp(1.75rem,2.7vw,2.45rem);font-weight:650;line-height:1.13}h3{font-size:1.18rem;font-weight:650;line-height:1.28}.hero .lede{max-width:760px;margin:25px 0 0;color:var(--muted);font-size:1.08rem;line-height:1.72}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:70px 0}.card{display:flex;flex-direction:column;min-height:340px;padding:28px;border:1px solid var(--line);border-radius:24px;background:#fff;transition:.22s}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.card:first-child{grid-column:span 2;background:linear-gradient(145deg,#edf4ef,#fffdf8);border-color:rgba(82,119,107,.24)}.meta{color:var(--blue);font-size:.75rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.card:first-child .meta{color:var(--blue)}.card h2,.card h3{margin:36px 0 13px}.card p{margin:0;color:var(--muted)}.card:first-child p{color:var(--muted)}.read{margin-top:auto;padding-top:28px;color:var(--blue);font-weight:800}.card:first-child .read{color:var(--blue)}
.article-hero{padding:72px 0;background:linear-gradient(160deg,#fffdf8,#f7f4ee 55%,#edf4ef);color:var(--ink)}.article-hero .article-meta{color:var(--muted)}.article-hero .kicker{color:var(--blue)}.article-hero h1{max-width:900px;font-size:clamp(2.4rem,4.5vw,4rem)}.article-meta{margin-top:22px;color:var(--muted);font-size:.88rem}.article-layout{display:grid;grid-template-columns:minmax(0,740px) 260px;gap:70px;padding:70px 0}.article{font-size:1.02rem}.article>p:first-of-type{font-size:1.16rem;color:#40504a}.article h2{margin:55px 0 17px}.article h3{margin:30px 0 10px}.article p{margin:0 0 20px}.article ul,.article ol{padding-left:22px}.article li{margin:10px 0}.answer{margin:32px 0;padding:25px;border-left:5px solid var(--gold);border-radius:0 16px 16px 0;background:var(--light)}.answer strong{display:block;margin-bottom:7px}.table-wrap{overflow-x:auto;margin:25px 0}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{padding:14px;text-align:left;border-bottom:1px solid var(--line)}th{background:var(--light);font-family:var(--font-display);font-weight:650}.toc{position:sticky;top:105px;align-self:start;padding:22px;border-radius:18px;background:var(--light)}.toc strong{font-family:var(--font-display);font-weight:650}.toc a{display:block;margin-top:11px;color:var(--muted);font-size:.87rem}.toc a:hover{color:var(--blue)}.faq{margin-top:50px}.faq details{padding:18px 0;border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-family:var(--font-display);font-weight:650}.faq details p{margin:12px 0 0;color:var(--muted)}
.cta{margin:35px 0 0;padding:30px;border:1px solid rgba(82,119,107,.24);border-radius:22px;background:linear-gradient(145deg,#edf4ef,#fffdf8);color:var(--ink)}.cta p{color:var(--muted)}.cta .btn{margin-top:12px}
footer{padding:45px 0;background:var(--ink);color:#fff}.foot{display:flex;justify-content:space-between;gap:30px;align-items:center}.foot p{margin:0;color:rgba(255,255,255,.52);font-size:.86rem}
@media(max-width:800px){.navlinks{display:none}.grid,.article-layout{grid-template-columns:1fr}.card:first-child{grid-column:auto}.toc{display:none}.foot{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.wrap{width:calc(100% - 28px)}.brand-logo{width:168px}.hero{padding:65px 0 45px}.grid{padding:45px 0}.article-layout{padding:45px 0}.topbar{font-size:.72rem}nav .btn{display:none}}