:root{--bg:#1E2124;--panel:#262A2E;--panel2:#2C3136;--dark:#17191B;--ink:#F2F4F5;--txt:#C3CBD0;--dim:#8B959C;--line:rgba(242,244,245,.12);--y:#EFC94C;--y2:#F7DD86;--ice:#8FB8CC;--wrap:1120px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','WenQuanYi Micro Hei',Arial,sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--y);text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.32}
p{margin:0}
ul,ol{margin:0;padding-left:20px}
figure,figcaption,blockquote,dl,dd,table{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 30px}
.topbar{background:var(--dark);border-bottom:1px solid var(--line);font-size:12.5px;color:var(--dim)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:34px;padding:0 30px}
.topbar b{color:var(--y);font-weight:600}
.top{position:sticky;top:0;z-index:30;background:rgba(30,33,36,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.top__in{display:flex;align-items:center;gap:18px;padding:13px 30px;max-width:var(--wrap);margin:0 auto}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);flex:0 0 auto}
.brand__mark{display:block;width:30px;height:30px;border-radius:8px}
.brand b{display:block;font-size:15.5px;letter-spacing:.3px;line-height:1.2}
.brand span{display:block;font-size:11px;color:var(--dim);letter-spacing:.6px;line-height:1.2}
.nav{display:flex;align-items:center;gap:2px;margin-left:6px;flex:1 1 auto}
.nav a{color:var(--txt);font-size:14px;padding:7px 11px;border-radius:6px;white-space:nowrap}
.nav a:hover{color:var(--y);background:rgba(239,201,76,.08)}
.nav a[aria-current="page"]{color:var(--y);box-shadow:inset 0 -2px 0 var(--y)}
.btn.btn-primary,.btn.btn-ghost{display:inline-flex;align-items:center;justify-content:center;width:auto;white-space:nowrap;font-size:14.5px;font-weight:600;border-radius:7px;padding:11px 22px;border:1px solid transparent;transition:background .18s,color .18s,border-color .18s}
.btn.btn-primary{background:var(--y);color:#221F14}
.btn.btn-primary:hover{background:var(--y2);color:#221F14}
.btn.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(242,244,245,.28)}
.btn.btn-ghost:hover{border-color:var(--y);color:var(--y)}
.top__in .btn.btn-primary{margin-left:auto}
.top__in .btn.btn-ghost{margin-left:0}
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#202427 0%,#1C1F22 100%)}
.hero::before{content:"";position:absolute;left:0;top:14%;width:6px;height:62%;background:linear-gradient(180deg,var(--y),rgba(239,201,76,0));border-radius:0 3px 3px 0}
.hero__in{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center;padding:62px 30px 66px;max-width:var(--wrap);margin:0 auto}
.kicker{display:inline-block;font-size:11.5px;letter-spacing:2px;color:var(--ice);border:1px solid rgba(143,184,204,.4);border-radius:4px;padding:3px 9px;margin-bottom:16px;text-transform:uppercase}
.hero h1{font-size:42px;letter-spacing:.5px}
.lead{margin-top:16px;font-size:16px;color:var(--txt);max-width:31em}
.hero__btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero__note{margin-top:14px;font-size:13px;color:var(--dim)}
.hero__shot{margin:0;max-width:268px;margin-left:auto;margin-right:auto;border-radius:12px;overflow:hidden;box-shadow:0 22px 48px rgba(0,0,0,.55),0 0 0 1px rgba(242,244,245,.12)}
.hero__shot img{width:100%;height:auto}
.facts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--dark)}
.facts div{padding:24px 26px;border-left:1px solid var(--line)}
.facts div:first-child{border-left:0}
.facts b{display:block;font-size:24px;color:var(--y);line-height:1.2}
.facts span{display:block;font-size:13px;color:var(--dim);margin-top:4px}
.sec{padding:66px 0}
.sec--alt{background:var(--dark);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sechead{text-align:center;max-width:760px;margin:0 auto 36px}
.sechead .kicker{margin-bottom:12px}
.sechead h2{font-size:29px}
.sechead .sub{margin-top:12px;font-size:14.5px;color:var(--dim)}
.sechead::after{content:"";display:block;width:46px;height:3px;background:var(--y);margin:20px auto 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--panel);border-top:3px solid var(--y);border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 20px 20px}
.card__num{display:block;font-size:29px;font-weight:800;color:var(--y);line-height:1;margin-bottom:12px;letter-spacing:1px}
.card h3{font-size:16.5px;margin-bottom:8px}
.card p{font-size:14px;color:var(--txt);line-height:1.74}
.gal{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:flex-start}
.gal figure{flex:0 0 auto;width:auto;max-width:100%;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.gal img{width:auto;max-width:100%;height:auto;margin:0 auto}
.gal figcaption{padding:12px 14px 14px;font-size:13px;line-height:1.6;color:var(--dim);border-top:1px solid var(--line);max-width:268px}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.steps li{background:var(--panel);border-left:3px solid var(--ice);padding:18px 20px}
.steps b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:5px}
.steps span{font-size:14px;color:var(--txt)}
.tbl-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.tbl{width:100%;min-width:560px;border-collapse:collapse;font-size:14px}
.tbl th{background:var(--dark);color:var(--ice);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:13px;letter-spacing:.5px}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{background:rgba(239,201,76,.09);color:var(--y);font-weight:700;white-space:nowrap;box-shadow:inset 3px 0 0 var(--y)}
.tbl-note{margin-top:12px;font-size:13px;color:var(--dim)}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quotes blockquote{background:var(--panel);border-top:2px solid var(--y);padding:20px}
.quotes p{font-size:14px;color:var(--txt)}
.quotes cite{display:block;margin-top:12px;font-size:12.5px;color:var(--dim);font-style:normal}
.qa{border-top:1px solid var(--line)}
.qa details{border-bottom:1px solid var(--line)}
.qa summary{display:block;cursor:pointer;list-style:none;position:relative;padding:17px 40px 17px 0;color:var(--ink);font-size:15.5px;font-weight:600}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:4px;top:14px;color:var(--y);font-size:20px;font-weight:400}
.qa details[open] summary::after{content:"–"}
.qa p{padding:0 40px 18px 0;font-size:14.5px;color:var(--txt)}
.more{margin-top:26px;text-align:center;font-size:14px}
.cta{background:linear-gradient(120deg,#23272A,#2C3136);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:60px 0}
.cta__in{max-width:720px;margin:0 auto;text-align:center}
.cta h2{font-size:27px}
.cta p{margin-top:12px;font-size:14.5px;color:var(--txt)}
.cta__btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.foot{background:var(--dark);padding:48px 0 26px;border-top:1px solid var(--line)}
.foot__in{max-width:720px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;padding:0 30px}
.foot .brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.foot .brand__mark{width:26px;height:26px}
.foot__desc{font-size:13px;color:var(--dim);max-width:44em}
.foot__nav{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;font-size:13.5px}
.foot__nav a{color:var(--txt)}
.foot__nav a:hover{color:var(--y)}
.foot__btns{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.foot__btns .btn.btn-primary,.foot__btns .btn.btn-ghost{font-size:13.5px;padding:9px 18px}
.foot__legal{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--dim);text-align:center}
.foot__legal p+p{margin-top:6px}
.post{display:grid;grid-template-columns:240px 1fr;gap:48px;padding:48px 0 70px;align-items:start}
.toc{position:sticky;top:104px;border-left:2px solid var(--line);padding-left:18px}
.toc b{display:block;font-size:12px;letter-spacing:1.6px;color:var(--dim);margin-bottom:10px}
.toc a{display:block;font-size:13.5px;color:var(--txt);padding:5px 0;line-height:1.5}
.toc a:hover{color:var(--y)}
.prose h1{font-size:34px}
.prose .lead{max-width:none}
.prose h2{font-size:24px;margin:44px 0 14px;padding-top:18px;border-top:1px solid var(--line);scroll-margin-top:110px}
.prose h2:first-of-type{margin-top:34px}
.prose h3{font-size:17px;margin:24px 0 8px;color:var(--ice);scroll-margin-top:110px}
.prose p{font-size:15.5px;color:var(--txt);margin:13px 0}
.prose ul,.prose ol{font-size:15.5px;color:var(--txt);margin:13px 0}
.prose li{margin:6px 0}
.prose .infig{max-width:280px;margin:28px auto;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--panel)}
.prose .infig img{width:100%;height:auto}
.prose .infig figcaption{padding:10px 12px;font-size:12.5px;color:var(--dim);border-top:1px solid var(--line);text-align:center}
.prose .key{background:rgba(239,201,76,.10);border-left:3px solid var(--y);padding:16px 18px;margin:18px 0;font-size:14.5px;color:var(--ink)}
.prose .key b{color:var(--y)}
.prose .tbl{margin:20px 0}
.prose .qa{margin:18px 0 0}
.next{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px;padding-top:22px;border-top:1px solid var(--line)}
.next a{font-size:14px;border:1px solid var(--line);border-radius:7px;padding:10px 16px;color:var(--txt)}
.next a:hover{border-color:var(--y);color:var(--y)}
@keyframes scanin{from{opacity:0;clip-path:inset(0 0 100% 0)}to{opacity:1;clip-path:inset(0 0 0 0)}}
.scan{animation:scanin .62s cubic-bezier(.22,.72,.24,1) both}
.scan.d1{animation-delay:.09s}
@media (prefers-reduced-motion:reduce){.scan{animation:none;opacity:1;clip-path:none}}
@media (max-width:980px){
.hero__in{grid-template-columns:1fr;gap:34px;padding:48px 30px 52px}
.hero h1{font-size:34px}
.hero__shot{max-width:250px;margin:0 auto}
.facts{grid-template-columns:1fr}
.facts div{border-left:0;border-top:1px solid var(--line)}
.facts div:first-child{border-top:0}
.cards,.quotes{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:1fr}
.post{grid-template-columns:1fr;gap:0;padding:36px 0 56px}
.toc{position:static;border-left:0;border-top:1px solid var(--line);padding:14px 0 0;display:flex;flex-wrap:wrap;gap:8px 16px}
.toc b{width:100%;margin-bottom:2px}
.toc a{padding:2px 0}
.prose h1{font-size:29px}
.top__in{flex-wrap:wrap;gap:10px 14px;padding:11px 22px}
.top__in .btn.btn-primary{margin-left:auto;padding:9px 16px;font-size:13.5px}
.top__in .btn.btn-ghost{padding:9px 14px;font-size:13.5px}
.nav{order:3;flex:1 0 100%;justify-content:center;flex-wrap:wrap;margin-left:0}
}
@media (max-width:620px){
.wrap{padding-left:18px;padding-right:18px}
.top__in{padding:10px 18px}
.hero__in{padding:36px 18px 42px}
.hero h1{font-size:28px}
.lead{font-size:15px}
.cards,.quotes{grid-template-columns:1fr}
.sechead h2{font-size:23px}
.sec{padding:48px 0}
.prose h1{font-size:25px}
.prose h2{font-size:20px}
.prose .infig{max-width:100%}
.foot__in{padding:0 18px}
}