:root{
--bg:#E7EBE3;--band:#DDE2D7;--paper:#FFFFFF;--ink:#1E2621;--ink-2:#48544B;--ink-3:#6E7A70;
--brand:#35503C;--brand-2:#24402C;--aux:#A85A2A;--dot:#CBA84F;--line:#D3DACD;--dark:#232B22;
--grad:linear-gradient(112deg,#35503C,#A85A2A);
--sh:0 18px 44px rgba(28,38,30,.13);
--r:14px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.78 -apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','WenQuanYi Micro Hei',Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
figure,figcaption,blockquote,dl,dd,table{margin:0}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--aux)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.sec{padding:64px 0}
.sec--band{background:var(--band)}
.sec--paper{background:var(--paper)}
.kicker{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--aux);font-weight:700}
.kicker::before{content:"";width:22px;height:2px;background:var(--aux)}
.top{position:sticky;top:0;z-index:40;padding:14px 0}
.top__in{max-width:1120px;margin:0 auto;padding:9px 12px 9px 18px;display:flex;align-items:center;gap:18px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;box-shadow:0 8px 24px rgba(28,38,30,.08);backdrop-filter:blur(8px)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:38px;height:38px;border-radius:10px}
.brand b{display:block;font-size:16px;color:var(--ink);line-height:1.2}
.brand span{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{padding:8px 13px;border-radius:999px;font-size:14.5px;color:var(--ink-2);white-space:nowrap}
.nav a:hover{background:var(--bg)}
.nav a[aria-current="page"]{background:var(--brand);color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:700;border-radius:999px;cursor:pointer;text-decoration:none}
.btn.btn-primary{display:inline-flex;width:auto;padding:11px 24px;background:var(--brand);color:#fff;border:1px solid var(--brand);white-space:nowrap;box-shadow:0 6px 16px rgba(53,80,60,.28)}
.btn.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn.btn-ghost{display:inline-flex;width:auto;padding:11px 22px;background:transparent;color:var(--brand);border:1px solid var(--brand);white-space:nowrap}
.btn.btn-ghost:hover{background:var(--brand);color:#fff}
.hero{padding:52px 0 20px}
.hero__in{max-width:1080px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:center}
.hero__copy{position:relative;padding-left:26px}
.hero__copy::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--grad)}
.hero h1{font-size:clamp(30px,4.4vw,50px);margin:16px 0 0}
.lead{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:32em}
.hero__btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero__note{margin-top:16px;font-size:13.5px;color:var(--ink-3)}
.hero__shot{max-width:320px;margin:0 auto;width:100%}
.hero__shot img{width:100%;height:auto;border-radius:26px;box-shadow:var(--sh)}
.hero__shot figcaption{margin-top:12px;text-align:center;font-size:12.5px;color:var(--ink-3)}
.stats{background:var(--dark);color:#E9EFE7}
.stats__in{max-width:1080px;margin:0 auto;padding:26px 22px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.stat b{display:block;font-size:26px;color:#fff;letter-spacing:-.5px}
.stat span{font-size:13px;color:#A9B6A9}
.sechead{position:relative;display:flex;flex-direction:column;gap:10px;margin-bottom:34px;padding-left:96px;min-height:58px}
.sechead::before{content:attr(data-no);position:absolute;left:0;top:-14px;font-size:74px;font-weight:800;color:var(--line);line-height:1;letter-spacing:-4px}
.sechead h2{font-size:clamp(23px,2.6vw,31px)}
.sechead .sub{font-size:15px;color:var(--ink-3);max-width:44em}
.list{border-top:1px solid var(--line)}
.item{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:26px 0;border-bottom:1px solid var(--line)}
.item__no{font-size:13px;font-weight:800;color:var(--aux);letter-spacing:.08em;padding-top:5px}
.item h3{font-size:18.5px;margin-bottom:8px}
.item p{color:var(--ink-2);font-size:15.5px}
.item .tip{display:block;margin-top:10px;font-size:13.5px;color:var(--brand);background:var(--bg);border-radius:8px;padding:8px 12px}
.shots{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.shot{background:var(--paper);border-radius:var(--r);padding:18px;box-shadow:0 6px 18px rgba(28,38,30,.06)}
.shot img{width:100%;height:auto;border-radius:10px}
.shot figcaption{margin-top:12px;font-size:13.5px;color:var(--ink-3);text-align:center}
.tbl{width:100%;border-collapse:collapse;font-size:15px;background:transparent}
.tbl th{text-align:left;font-size:12.5px;letter-spacing:.1em;color:var(--ink-3);font-weight:700;padding:0 0 12px}
.tbl td{padding:16px 14px 16px 0;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.tbl td:first-child{color:var(--ink);font-weight:700;white-space:nowrap}
.qa{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.qa details{border-bottom:1px solid var(--line);padding:16px 0}
.qa summary{list-style:none;cursor:pointer;font-weight:700;font-size:15.5px;color:var(--ink);display:flex;gap:10px;align-items:flex-start}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"+";color:var(--aux);font-weight:800;flex:0 0 auto}
.qa details[open] summary::before{content:"–"}
.qa p{margin-top:10px;color:var(--ink-2);font-size:14.8px}
.cta{background:var(--dark);color:#E9EFE7;padding:56px 0}
.cta__in{max-width:1080px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta h2{font-size:clamp(22px,2.4vw,29px);color:#fff}
.cta p{margin-top:10px;color:#A9B6A9;font-size:15px;max-width:46em}
.cta .btn.btn-primary{background:#fff;color:var(--brand);border-color:#fff}
.cta .btn.btn-primary:hover{background:var(--dot);color:#232B22}
.foot{background:#1B221C;color:#9DAA9D;padding:56px 0 30px}
.foot__in{max-width:1080px;margin:0 auto;padding:0 22px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:18px}
.foot__brand{display:inline-flex;align-items:center;gap:10px}
.foot__brand img{width:34px;height:34px;border-radius:9px}
.foot__brand b{color:#fff;font-size:15.5px}
.foot__nav{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;font-size:14px}
.foot__nav a{color:#B9C4B9}
.foot__nav a:hover{color:var(--dot)}
.foot .btn.btn-primary{display:inline-flex;width:auto;padding:10px 22px;background:var(--aux);border-color:var(--aux);color:#fff}
.foot__disc{font-size:12.5px;color:#7F8B80;max-width:60em;line-height:1.8}
.foot__cr{font-size:12px;color:#667267}
.prose{max-width:760px}
.prose p{margin:14px 0;color:var(--ink-2);font-size:16px}
.prose h3{margin:26px 0 10px;font-size:19px}
.prose ul{margin:14px 0}
.prose li{position:relative;padding-left:20px;margin:8px 0;color:var(--ink-2)}
.prose li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--dot)}
.split{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:96px;font-size:14px;border-left:2px solid var(--line);padding-left:16px}
.toc b{display:block;font-size:12px;letter-spacing:.14em;color:var(--ink-3);margin-bottom:10px}
.toc a{display:block;padding:6px 0;color:var(--ink-2)}
.page-hero{padding:44px 0 8px}
.page-hero h1{font-size:clamp(26px,3.4vw,38px);margin:14px 0 0}
.steps{display:grid;gap:20px;margin-top:8px}
.step{background:var(--paper);border-radius:var(--r);padding:22px 24px;border-left:4px solid var(--brand)}
.step b{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--aux);margin-bottom:6px}
.step h3{font-size:17.5px;margin-bottom:6px}
.step p{color:var(--ink-2);font-size:15px}
@media (max-width:980px){
.hero__in{grid-template-columns:1fr;gap:34px}
.hero__copy{padding-left:20px}
.hero__shot{max-width:300px}
.shots{grid-template-columns:1fr}
.split{grid-template-columns:1fr;gap:26px}
.toc{position:static;border-left:0;padding-left:0;display:flex;flex-wrap:wrap;gap:10px}
.toc b{width:100%;margin-bottom:2px}
.toc a{padding:6px 12px;background:var(--paper);border-radius:999px}
.stats__in{grid-template-columns:repeat(2,1fr);gap:18px}
.sechead{padding-left:0;padding-top:34px}
.sechead::before{font-size:54px;top:-6px}
}
@media (max-width:620px){
.top{padding:8px 0}
.top__in{padding:8px 10px;gap:8px;flex-wrap:wrap;border-radius:20px}
.brand{order:1}
.top__in>.btn{order:2;margin-left:auto;padding:9px 16px;font-size:14px}
.nav{order:3;flex:1 0 100%;justify-content:center;gap:2px;margin-left:0;border-top:1px solid var(--line);padding-top:8px}
.nav a{padding:7px 10px;font-size:13.5px}
.sec{padding:44px 0}
.hero{padding:34px 0 10px}
.lead{font-size:16px}
.qa{grid-template-columns:1fr}
.item{grid-template-columns:42px 1fr;gap:12px}
.cta__in{flex-direction:column;align-items:flex-start}
}