*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;overflow-wrap:anywhere}
img{max-width:100%;height:auto}
a{color:inherit}
.nt{position:absolute;opacity:0;pointer-events:none}
.burger{display:none;cursor:pointer;width:44px;height:44px;align-items:center;justify-content:center}
.burger span,.burger span::before,.burger span::after{display:block;width:22px;height:2px;background:currentColor;content:"";position:relative}
.burger span::before{position:absolute;top:-7px}.burger span::after{position:absolute;top:7px}
.tbl{overflow-x:auto}table{border-collapse:collapse;width:100%}
details>summary{cursor:pointer;list-style:none}details>summary::-webkit-details-marker{display:none}
@media (max-width:820px){.burger{display:flex}.nav{display:none}.nt:checked~.nav{display:flex}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
body{background:var(--bg);color:var(--ink);font:16px/1.85 var(--ft)}
.wrap{max-width:var(--ww,1080px);margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:38px;height:38px;flex:none}
.brand b{display:block;font-size:18px;letter-spacing:2px;line-height:1.2}
.brand i{display:block;font-style:normal;font-size:11px;color:var(--mut);line-height:1.2}
.nav a{text-decoration:none;color:var(--mut)}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;background:var(--acc);color:var(--onacc,#fff);font-weight:700;text-decoration:none;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.article{max-width:var(--aw,780px);margin:0 auto;padding:36px 20px 72px}
.crumbs{font-size:13px;color:var(--mut);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.crumbs a{text-decoration:none}
.article h1{font-size:clamp(26px,4vw,36px);line-height:1.35;margin:0 0 10px}
.meta{color:var(--mut);font-size:13px;margin:0 0 24px}
.prose h2{font-size:23px;line-height:1.4;margin:2em 0 .6em}
.prose h3{font-size:18px;margin:1.6em 0 .4em}
.prose p{margin:.9em 0}
.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.35em 0}
.prose a{color:var(--acc2);text-underline-offset:3px}
.lede{font-size:18px}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps li{counter-increment:s;position:relative;padding:16px 16px 16px 66px;margin:12px 0;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:50%;background:var(--acc);color:var(--onacc,#fff);display:grid;place-items:center;font-weight:700}
.steps b{display:block}.steps span{color:var(--mut)}
.tbl{border:1px solid var(--line);border-radius:var(--r);margin:1.2em 0}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
tbody tr:last-child>*{border-bottom:0}
thead th{background:var(--card);white-space:nowrap}
.callout{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--acc);border-radius:var(--r);padding:14px 18px;margin:1.4em 0}
.cta-row{margin:24px 0}.cta-row small{display:block;margin-top:8px;color:var(--mut)}
.faq details{border:1px solid var(--line);border-radius:var(--r);margin:10px 0;background:var(--card)}
.faq summary{padding:14px 18px;font-weight:600}
.faq summary::after{content:"+";float:right;color:var(--acc2)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0;padding:0 18px 16px;color:var(--mut)}
.kv div{display:grid;grid-template-columns:150px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.kv dt{font-weight:700;color:var(--acc2)}.kv dd{margin:0}
.endcta{margin-top:44px;padding:24px;border-radius:var(--r);background:var(--card);border:1px solid var(--line);text-align:center}
.endcta p{margin:.3em 0}
.related{margin-top:40px}.related h2{font-size:20px}
.related ul{list-style:none;padding:0}.related li{padding:12px 0;border-bottom:1px solid var(--line)}
.related a{font-weight:700;display:block;text-decoration:none}.related a:hover{color:var(--acc2)}
.related span{color:var(--mut);font-size:14px}
.site-footer{border-top:1px solid var(--line);padding:34px 0;color:var(--mut);font-size:14px}
.site-footer p{margin:.5em 0}.site-footer a{color:var(--ink)}
.fnav{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0}
.toc{display:none}
@media (max-width:820px){.kv div{grid-template-columns:1fr;gap:2px}.steps li{padding-left:58px}}
:root{--bg:#fbf4ee;--card:#fff;--ink:#33241d;--mut:#7b6558;--line:#ecd9cb;--acc:#c0603a;--acc2:#9d4524;--onacc:#fff;--r:20px;--aw:760px;--ft:"PingFang SC","Microsoft YaHei",system-ui,sans-serif}
.layout{display:grid;grid-template-columns:260px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;background:linear-gradient(180deg,#8f3f20,#c0603a);color:#fff3ea;padding:26px 20px;display:flex;flex-direction:column;gap:20px}
.side .brand b{color:#fff}.side .brand i{color:#ffd9c4}
.side .nav{display:flex;flex-direction:column;gap:2px}
.side .nav a{color:#ffe3d3;padding:9px 12px;border-radius:12px;font-size:15px}
.side .nav a:hover{background:rgba(255,255,255,.14);color:#fff}
.side .nav a[aria-current]{background:#fff;color:#8f3f20;font-weight:700}
.side-cta{margin-top:auto}.side-cta .btn{background:#fff;color:#8f3f20;width:100%;text-align:center}
.content{min-width:0}
.hero2{padding:44px 40px 10px}
.hero2 .kick{display:inline-block;background:#f4d9c8;color:var(--acc2);padding:4px 12px;border-radius:99px;font-size:13px;margin-bottom:14px}
.hero2 h1{font-size:clamp(30px,4.6vw,46px);line-height:1.2;margin:0 0 12px}
.hero2 p{font-size:18px;color:var(--mut);max-width:36em;margin:0}
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;padding:26px 40px 10px;grid-auto-flow:dense}
.bento>*{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.bento .b-logo{grid-column:span 2;grid-row:span 2;background:#17204a;display:grid;place-items:center;overflow:hidden;position:relative}
.bento .b-logo img{width:78%;animation:bob 6s ease-in-out infinite}
.bento .b-logo::after{content:"";position:absolute;width:140%;aspect-ratio:1;border-radius:50%;background:conic-gradient(from 0deg,rgba(255,140,90,.0),rgba(255,140,90,.35),rgba(143,72,186,.0));animation:rot 14s linear infinite}
.bento .b-logo img{position:relative;z-index:1}
@keyframes bob{50%{transform:translateY(-8px)}}@keyframes rot{to{transform:rotate(360deg)}}
.bento .w2{grid-column:span 2}.bento .w3{grid-column:span 3}.bento .w4{grid-column:span 4}
.bento h3{margin:0 0 6px;font-size:17px}.bento p{margin:0;color:var(--mut);font-size:15px}
.bento .hl{background:var(--acc);color:#fff;border:0}.bento .hl p,.bento .hl h3{color:#fff}
.bento .stat b{font-size:34px;color:var(--acc);display:block;line-height:1.1}
.sec2{padding:26px 40px}.sec2 h2{font-size:24px;margin:0 0 14px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;list-style:none;padding:0;margin:0}
.cards a{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;text-decoration:none;transition:transform .2s,box-shadow .2s}
.cards a:hover{transform:translateY(-3px);box-shadow:0 10px 24px -14px rgba(143,63,32,.5)}
.cards b{display:block;margin-bottom:4px}.cards span{color:var(--mut);font-size:14px}
.article{margin:0;padding:34px 40px 64px;max-width:860px}
.callout{border-left-color:var(--acc);border-radius:14px}
.site-footer .wrap{padding:0 40px;max-width:none}
.sticky-cta{display:none}
@media (max-width:1000px){.bento{grid-template-columns:repeat(2,1fr)}.bento .b-logo,.bento .w2,.bento .w3,.bento .w4{grid-column:span 2}.bento .b-logo{grid-row:auto;min-height:200px}}
@media (max-width:820px){.layout{display:block}.side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;padding:12px 16px;gap:8px}.side .brand{flex:1}.burger{color:#fff;display:flex}.side .nav{width:100%;display:none}.nt:checked~.nav{display:flex}.side-cta{display:none}.hero2,.bento,.sec2,.article{padding-left:16px;padding-right:16px}.cards{grid-template-columns:1fr}.site-footer .wrap{padding:0 16px}}