@import url('research.css');
:root{--navy:#14283f;--navy2:#0d2136;--blue:#3068a3;--green:#15947c;--ink:#273746;--muted:#687788;--line:#e2e8ed;--paper:#f4f6f8;--white:#fff;--gold:#d5ad70}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei","PingFang SC",sans-serif;line-height:1.7}img,svg{max-width:100%}a{color:inherit;text-decoration:none}button,select{font:inherit}button{cursor:pointer}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.topline{background:#0b1c2e;color:#bdcad5;font-size:11px;letter-spacing:.12em;padding:7px 0}.topline .wrap{display:flex;justify-content:space-between}.masthead{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;box-shadow:0 5px 18px #14283f08}.masthead .wrap{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}.logo-mark{display:grid;place-items:center;background:var(--navy);color:#fff;width:38px;height:38px;font-family:Georgia,serif;font-size:19px;font-weight:700;border-radius:2px}.logo-text{font-size:19px;font-weight:800;letter-spacing:-.06em;color:var(--navy);line-height:1.1}.logo-text small{display:block;letter-spacing:.13em;font-size:9px;font-weight:600;color:var(--green);margin-top:5px}.mainnav{display:flex;align-items:center;gap:23px;font-size:13px;font-weight:600}.mainnav a{white-space:nowrap;padding:24px 0;position:relative}.mainnav a:hover,.mainnav a[aria-current=page]{color:var(--green)}.mainnav a[aria-current=page]:after{content:"";height:2px;background:var(--green);position:absolute;bottom:16px;left:0;right:0}.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:2px;padding:7px 10px;color:var(--navy)}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.17em;text-transform:uppercase;color:var(--green)}.eyebrow.light{color:#8ed3c3}.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 50%,#ffffff07 50.2%,transparent 50.4%),radial-gradient(circle at 83% 35%,#28618c52,transparent 36%);pointer-events:none}.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:60px;padding:80px 0 76px;position:relative}.hero h1{font-size:clamp(36px,4vw,60px);line-height:1.2;letter-spacing:-.05em;margin:20px 0 25px;font-weight:700}.hero p{color:#bdcad6;max-width:590px;font-size:16px;line-height:1.95}.hero-actions{display:flex;gap:11px;margin-top:35px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 19px;border:1px solid var(--green);border-radius:2px;font-weight:700;font-size:13px;background:var(--green);color:#fff;min-height:44px;transition:.2s}.btn:hover{transform:translateY(-2px);background:#0e7a67}.btn.ghost{background:transparent;border-color:#7992a9;color:#fff}.btn.ghost:hover{background:#ffffff13}.btn.text{background:none;border:0;color:var(--blue);padding:0;min-height:0}.research-strip{background:#eaf0f4;border-bottom:1px solid #d8e2e8}.research-strip .wrap{display:flex;justify-content:space-between;gap:10px;overflow-x:auto}.research-strip a{font-size:12px;font-weight:700;padding:17px 8px;white-space:nowrap;color:#405669}.research-strip a:hover{color:var(--green)}section{padding:83px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section-head h2,.page-head h1{font-family:Georgia,"Noto Serif SC","Songti SC",serif;color:var(--navy);letter-spacing:-.035em;line-height:1.35}.section-head h2{font-size:clamp(27px,3vw,39px);margin:9px 0}.section-head p{max-width:610px;color:var(--muted);margin:0}.section-index{font:12px Georgia,serif;color:var(--green);border-bottom:1px solid var(--green);padding-bottom:5px;white-space:nowrap}.rule{height:1px;background:var(--line)}.muted-section{background:var(--paper)}.dark-section{background:var(--navy);color:#e8eff5}.dark-section h2{color:#fff}.dark-section .section-head p{color:#a9bdcc}.caption{color:var(--muted);font-size:12px}.meta{font-size:11px;letter-spacing:.08em;color:var(--muted);font-weight:700}.tag{display:inline-block;font-size:10px;letter-spacing:.1em;text-transform:uppercase;padding:5px 8px;background:#e8f2ef;color:#137a68;font-weight:800}.article-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;margin-top:15px}.article-link:hover{text-decoration:underline}.foot{background:#0d1d2d;color:#b6c4d0;padding:58px 0 25px}.foot .wrap{display:grid;grid-template-columns:1.5fr repeat(2,1fr);gap:45px}.foot h3{color:#fff;font-size:14px;margin:0 0 18px}.foot p,.foot a{font-size:12px}.foot a:hover{color:#fff}.foot-links{display:grid;gap:8px}.foot-bottom{border-top:1px solid #ffffff22;margin-top:46px;padding-top:20px;font-size:11px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.breadcrumb{font-size:12px;color:#7a8a98;padding:18px 0}.breadcrumb a:hover{color:var(--green)}.page-head{padding:65px 0 55px;border-bottom:1px solid var(--line);background:linear-gradient(120deg,#f3f7f9,#fff)}.page-head .wrap{display:grid;grid-template-columns:1fr 270px;gap:40px;align-items:end}.page-head h1{font-size:clamp(32px,3.8vw,50px);margin:16px 0}.page-head p{font-size:16px;color:#596d7e;max-width:750px}.page-code{font:700 80px Georgia,serif;color:#e2eaf0;text-align:right;line-height:1}.content-grid{display:grid;grid-template-columns:1.65fr .7fr;gap:60px}.aside-box{border-top:3px solid var(--green);background:var(--paper);padding:25px;align-self:start}.aside-box h3{margin:0 0 10px;color:var(--navy)}.aside-box a{display:block;border-bottom:1px solid var(--line);padding:10px 0;font-size:13px}.table-scroll{overflow-x:auto;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;background:#edf2f5;color:#314f68;font-size:11px;letter-spacing:.07em;white-space:nowrap}th,td{padding:15px 17px;border-bottom:1px solid var(--line);vertical-align:top}tr:last-child td{border-bottom:0}tbody tr:hover{background:#f9fbfc}.faq details{border-bottom:1px solid var(--line);padding:17px 0}.faq summary{font-weight:700;cursor:pointer;list-style:none;position:relative;padding-right:28px}.faq summary:after{content:'+';position:absolute;right:0;color:var(--green);font-size:20px;line-height:1}.faq details[open] summary:after{content:'−'}.faq p{color:var(--muted);margin-bottom:0}.article-row{display:grid;grid-template-columns:190px 1fr;gap:23px;padding:25px 0;border-bottom:1px solid var(--line)}.article-row img{width:100%;height:135px;object-fit:cover;background:#e7eef0}.article-row h3{font-family:Georgia,"Noto Serif SC",serif;font-size:21px;line-height:1.45;margin:7px 0;color:var(--navy)}.article-row p{font-size:13px;color:#637384;margin:0;line-height:1.8}.chip-group{display:flex;gap:7px;flex-wrap:wrap}.chip{border:1px solid #cad7df;background:#fff;color:#496477;border-radius:2px;padding:8px 13px;font-size:12px}.chip.active,.chip:hover{background:var(--navy);border-color:var(--navy);color:#fff}.sourcelist{padding-left:20px}.sourcelist a{color:var(--blue);word-break:break-all}.sourcelist li{margin:7px 0}.read-body{max-width:760px}.read-body h2{font:700 25px Georgia,"Noto Serif SC",serif;color:var(--navy);margin:43px 0 15px}.read-body p{font-size:16px;line-height:2.15;color:#354553}.read-hero{width:100%;max-height:320px;object-fit:cover;margin:16px 0 27px}.related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.related-list a{border:1px solid var(--line);padding:18px;font-weight:700;font-size:14px;color:var(--navy)}.related-list a:hover{border-color:var(--green)}.notice{background:#edf5f3;border-left:3px solid var(--green);padding:18px 21px;color:#305b56;font-size:13px}.small-note{font-size:12px;color:#748390}