@charset "UTF-8";
:root{--ink:#173e2d;--forest:#245d40;--muted:#667467;--paper:#fbfcf5;--line:#e0e7d7;--lime:#deefb9;--soft:#f0f5e7;--sun:#f7e8a8;--radius:22px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.7}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid #b8cc73;outline-offset:4px}button{cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.3}h1{letter-spacing:-.04em}h2{font-size:30px;letter-spacing:-.025em}h3{font-size:19px}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}.muted{color:var(--muted)}.skip{position:fixed;top:-80px;left:20px;background:white;padding:12px;z-index:99}.skip:focus{top:12px}.topbar{border-bottom:1px solid var(--line);background:#fffef9}.header{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:90px}.brand{display:flex;gap:12px;align-items:center;flex-shrink:0}.brand-symbol{width:44px;height:44px}.brand strong{display:block;font-size:21px;letter-spacing:.02em}.brand small{font-size:11px;letter-spacing:.12em;color:var(--muted)}.nav{display:flex;align-items:center;gap:27px;font-size:14px}.nav a:hover{color:#62833c}.nav .official{border:1px solid var(--line);padding:8px 15px;border-radius:100px}.mobile-toggle{display:none;border:1px solid var(--line);background:transparent;border-radius:9px;padding:7px 12px}.eyebrow{text-transform:uppercase;font-size:11px;letter-spacing:.2em;font-weight:650;color:#61764d}.hero{padding:62px 0 30px;background:radial-gradient(ellipse at 80% 25%,#eaf4c8,transparent 65%),var(--paper);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.12fr 1fr;align-items:center;gap:60px}.hero h1{font-size:clamp(40px,4.2vw,60px);margin:18px 0 22px;line-height:1.2}.hero h1 em{font-style:normal;color:#5f852c}.hero-description{font-size:16px;line-height:1.9;color:var(--muted);max-width:560px}.hero .badge{display:inline-flex;align-items:center;gap:8px;border:1px solid #d7e3c7;padding:5px 12px;border-radius:100px;font-size:12px;background:#ffffff80}.badge-dot{width:6px;height:6px;border-radius:50%;background:#628139}.search{display:flex;gap:8px;padding:7px;border:1px solid #c7d5b5;background:#fff;border-radius:16px;box-shadow:0 6px 22px #244c2c07}.search label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.search input{flex:1;min-width:0;border:0;background:transparent;padding:10px 13px;outline-offset:0;color:var(--ink)}.search button{border:0;background:var(--forest);color:#fff;border-radius:11px;padding:10px 22px;font-weight:600}.quick-search{display:flex;flex-wrap:wrap;gap:8px 15px;margin:12px 0 0;font-size:12px;color:var(--muted)}.quick-search a{text-decoration:underline;text-decoration-color:#bdcbaa;text-underline-offset:4px}.mascot-scene{position:relative;min-height:370px;display:flex;align-items:center;justify-content:center;gap:13px;padding-top:10px}.mascot-scene:before{content:"";position:absolute;width:340px;height:340px;background:#e0efbb;border-radius:50%;z-index:0}.mascot{position:relative;z-index:1;width:48%;margin:0}.mascot:first-child{transform:rotate(-5deg) translateY(14px)}.mascot:nth-child(2){transform:rotate(5deg) translateY(-9px)}.mascot img{width:100%;aspect-ratio:1;object-fit:cover;border:7px solid #fffef6;border-radius:42% 42% 24% 24%;box-shadow:0 10px 20px #37571c10}.mascot figcaption{width:max-content;background:#fffef8;margin:-6px auto 0;position:relative;padding:2px 21px 4px;border-radius:0 0 14px 14px;font-size:13px;font-weight:650}.scene-flower{position:absolute;color:#fff8dc;font-size:72px;right:-12px;bottom:19px;transform:rotate(17deg);z-index:2;text-shadow:0 2px #d7e1b8}.scene-note{position:absolute;top:-7px;right:10px;font-size:12px;color:#657c43;transform:rotate(6deg)}.hero-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:45px;padding:22px 0 4px;border-top:1px solid #dbe5cd}.hero-bottom>p{margin:0;color:var(--muted);font-size:12px}.stats{display:flex;gap:32px}.stat strong{font-size:25px;line-height:1.2;display:block}.stat span{font-size:11px;color:var(--muted)}.section{padding:54px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:26px}.section-heading h2{margin:7px 0}.section-heading p{margin:0;font-size:14px;color:var(--muted)}.text-link{font-size:14px;color:var(--forest);white-space:nowrap}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 26px}.filter-chip{padding:7px 17px;background:transparent;border:1px solid var(--line);border-radius:100px;color:var(--muted);font-size:13px}.filter-chip[aria-pressed=true]{background:var(--forest);border-color:var(--forest);color:white}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.category-card{border:1px solid var(--line);border-radius:var(--radius);padding:25px;background:#fffefa;transition:border-color .2s,transform .2s;min-width:0}.category-card:hover{border-color:#9db27e;transform:translateY(-3px)}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.category-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:14px;background:#edf3dc;color:#516e32}.category-icon svg{width:25px;height:25px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.category-card:nth-child(3n+2) .category-icon{background:#f8efd4;color:#896b30}.category-card:nth-child(3n) .category-icon{background:#eef0e8;color:#587060}.card-count{font-size:11px;color:var(--muted)}.category-card h3{margin:0 0 4px}.en{font-size:11px;color:#7c8878;letter-spacing:.025em;line-height:1.4}.preview-links{display:flex;flex-wrap:wrap;gap:5px 13px;padding-top:18px;margin-top:18px;border-top:1px solid #edf0e6;font-size:12px;color:var(--muted)}.preview-links a:hover,.preview-links a:focus{text-decoration:underline;color:var(--forest)}.arrow{font-size:18px;font-weight:400;float:right}.card-label-link{display:block}.trust-strip{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;background:#eef3e4;border:1px solid #e1e8d3;border-radius:24px;padding:30px 36px;margin-bottom:50px}.trust-strip h3{margin:6px 0 10px}.trust-strip p{margin:0;font-size:13px;color:var(--muted)}.source-marks{display:flex;gap:22px;font-weight:700;letter-spacing:.05em;flex-wrap:wrap;color:#6f7b5e}.footer{background:#173e2d;color:#ebf3df;padding:40px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:35px;padding-bottom:28px}.footer strong{font-size:19px}.footer p{margin:10px 0 0;font-size:13px;color:#b9cbb5}.footer-links{display:flex;gap:25px;font-size:13px}.footer-bottom{padding-top:20px;border-top:1px solid #ffffff20;font-size:11px;color:#b8c8b0;display:flex;justify-content:space-between;gap:20px}.breadcrumb{font-size:12px;color:var(--muted);display:flex;align-items:center;flex-wrap:wrap;gap:6px;padding:26px 0 24px}.breadcrumb a:hover{text-decoration:underline}.breadcrumb .sep{color:#a1ac98}.subhero{padding:6px 0 26px}.subhero h1{font-size:40px;margin:10px 0}.subhero .lead{color:var(--muted);max-width:750px;font-size:14px}.submeta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:12px;color:var(--muted)}.status-tag{background:#edf2e4;border:1px solid var(--line);padding:3px 10px;border-radius:100px;color:#5e733f}.content-layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:36px;align-items:start;margin:10px auto 60px}.sidebar{position:sticky;top:22px;max-height:calc(100vh - 44px);overflow:auto;padding-right:12px;font-size:13px}.sidebar-label{font-size:11px;letter-spacing:.1em;color:#8a957e;margin:14px 0 8px}.sidebar a{display:block;padding:8px 12px;border-radius:9px;color:var(--muted)}.sidebar a:hover{background:#edf2e3}.sidebar a[aria-current]{background:#e6efda;font-weight:650;color:var(--forest)}.sub-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.sub-card{padding:20px;border:1px solid var(--line);border-radius:16px;background:#fffefa;display:block;min-width:0}.sub-card:hover{border-color:#a9bb90;background:#f7faee}.sub-card strong{display:block;font-size:16px;margin-bottom:6px;overflow-wrap:anywhere}.sub-card .submeta{margin-top:12px;font-size:11px}.content-title{font-size:21px;margin:0 0 20px}.section-small{padding:30px 0 0}.empty-state{padding:34px;border:1px dashed #bdcbae;border-radius:20px;background:#f5f8ed;display:flex;gap:24px;align-items:center;margin:10px 0 28px}.empty-state img{width:90px;height:90px;border-radius:50%;flex-shrink:0}.empty-state h2{font-size:22px;margin:0 0 9px}.empty-state p{font-size:13px;color:var(--muted);margin:0}.outline{border:1px solid var(--line);border-radius:16px;background:#fffefa;padding:12px 20px}.tree-level{list-style:none;margin:0;padding:0 0 0 20px;border-left:1px solid #e2e8d8}.tree-level:first-child{border:0;padding:0}.tree-level li{margin:5px 0}.tree-level summary{cursor:pointer;padding:8px 0;font-size:14px}.tree-level summary a{margin-left:4px}.tree-level a:hover{color:#608533;text-decoration:underline}.tree-leaf{display:flex;gap:8px;align-items:baseline;font-size:13px;padding:7px 0 7px 18px}.tree-leaf:before{content:"·";color:#9eae8a}.tree-count{font-size:11px;color:#8b957f;margin-left:8px;white-space:nowrap}.directory-actions{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}.outline-button{background:#fff;border:1px solid var(--line);border-radius:9px;padding:7px 13px;color:var(--forest);font-size:12px}.source-links{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:22px;margin-top:28px}.source-links ul{padding-left:18px}.source-links a{text-decoration:underline;text-underline-offset:3px}.source-links li{margin:8px 0}.reading-note{font-size:12px;color:var(--muted);margin-top:20px}.reference-list{display:grid;gap:14px;margin:24px 0 50px}.reference-card{border:1px solid var(--line);border-radius:16px;background:#fffefa;padding:24px}.reference-card h2{font-size:18px;margin:4px 0 9px}.reference-card p{font-size:13px;color:var(--muted);margin:0}.reference-card a{overflow-wrap:anywhere}.reference-card .org{font-size:11px;color:#688145}.coverage-table{width:100%;border-collapse:collapse;background:#fffefa;font-size:13px}.coverage-table th,.coverage-table td{text-align:left;padding:13px;border-bottom:1px solid var(--line)}.coverage-table th{background:#eef4e3}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:14px;margin:20px 0 35px}.search-page{max-width:900px}.search-tools{display:flex;gap:15px;align-items:center;justify-content:space-between;margin:26px 0 20px}.search-tools select{max-width:55%;border:1px solid var(--line);padding:8px;border-radius:9px;background:white;color:var(--ink)}.result{display:block;background:#fffefa;border:1px solid var(--line);border-radius:16px;padding:21px;margin:12px 0}.result:hover{border-color:#9bb77a}.result strong{font-size:18px}.result-path{font-size:11px;color:var(--muted);margin:8px 0 0}.result small{display:block;color:#7a8870;font-size:12px}.search-message{padding:28px;border:1px dashed var(--line);border-radius:16px;color:var(--muted)}.pagination{display:flex;align-items:center;justify-content:center;gap:15px;margin:25px 0 50px}.pagination button{background:white;border:1px solid var(--line);border-radius:9px;padding:7px 15px;color:var(--forest)}.pagination button:disabled{opacity:.4;cursor:default}.intro-panel{padding:25px 30px;border:1px solid var(--line);border-radius:20px;background:#f1f6e7;margin:18px 0 26px}.intro-panel p{margin:8px 0;font-size:14px;color:var(--muted)}[hidden]{display:none!important}mark{background:#e8efb6;color:inherit;padding:0 2px;border-radius:3px}.mini-search{max-width:620px;margin-bottom:28px}.parent-link{display:inline-block;font-size:13px;color:var(--forest);margin-top:12px}.root-summary{font-size:13px;color:var(--muted)}
@media(min-width:1450px){.hero{padding-top:75px}.hero-grid{gap:100px}}
@media(max-width:1050px){.nav{gap:16px}.nav a:nth-child(3),.nav a:nth-child(4){display:none}.hero-grid{gap:25px}.hero h1{font-size:44px}.mascot-scene{min-height:310px}.mascot-scene:before{width:260px;height:260px}.stats{gap:22px}.trust-strip{grid-template-columns:1fr;gap:25px}.content-layout{grid-template-columns:195px minmax(0,1fr);gap:22px}.category-card{padding:20px}.brand strong{font-size:18px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.header{min-height:76px;flex-wrap:wrap;gap:0}.brand-symbol{width:36px;height:36px}.brand strong{font-size:17px}.brand small{font-size:9px}.mobile-toggle{display:block}.nav{display:none;width:100%;padding:10px 0 18px;flex-wrap:wrap;gap:18px;font-size:13px}.nav.is-open{display:flex}.nav a:nth-child(3),.nav a:nth-child(4){display:block}.hero{padding-top:32px}.hero-grid{grid-template-columns:1fr;gap:12px}.hero h1{font-size:40px}.hero-description{font-size:14px}.mascot-scene{min-height:295px;max-width:380px;margin:15px auto 0;gap:10px}.mascot-scene:before{width:260px;height:260px}.mascot{width:46%}.scene-note{top:0}.scene-flower{font-size:50px;right:3px;bottom:15px}.hero-bottom{margin-top:15px;display:block;padding-top:22px}.stats{justify-content:space-between;gap:10px}.stat strong{font-size:24px}.hero-bottom>p{margin-top:20px;font-size:11px}.section{padding:36px 0}.section-heading{align-items:start;gap:12px}.section-heading h2{font-size:25px}.section-heading p{font-size:12px}.section-heading .text-link{font-size:12px;margin-top:33px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.category-card{padding:17px;border-radius:16px}.category-card h3{font-size:16px}.card-top{margin-bottom:17px}.category-icon{width:35px;height:35px;border-radius:11px}.category-icon svg{width:22px;height:22px}.card-count{font-size:10px}.preview-links{font-size:11px;gap:4px 10px;margin-top:15px;padding-top:15px}.en{font-size:10px}.arrow{font-size:15px}.filter-row{gap:7px}.filter-chip{padding:5px 12px;font-size:12px}.trust-strip{padding:24px;gap:20px;margin-bottom:35px}.source-marks{font-size:14px;gap:20px}.footer-top{display:block}.footer-links{margin-top:25px;flex-wrap:wrap;gap:16px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}.subhero h1{font-size:31px;overflow-wrap:anywhere}.content-layout{grid-template-columns:1fr;margin-bottom:40px}.sidebar{position:static;max-height:none;display:none}.sub-grid{gap:10px}.sub-card{padding:16px}.sub-card strong{font-size:15px}.empty-state{padding:23px;gap:16px}.empty-state img{width:65px;height:65px}.empty-state h2{font-size:19px}.tree-level{padding-left:13px}.outline{padding:8px 14px}.tree-level summary{font-size:13px}.tree-leaf{font-size:12px}.breadcrumb{font-size:11px;padding:20px 0}.reference-card{padding:20px}.intro-panel{padding:20px}.search button{padding:9px 16px}.search input{padding:10px 8px}.search-tools{font-size:12px}.search-tools select{font-size:12px}.hero .badge{font-size:11px}.reading-note{font-size:11px}}
@media(max-width:370px){.category-grid,.sub-grid{grid-template-columns:1fr}.brand strong{font-size:15px}.brand-symbol{width:30px}.brand{gap:8px}.mobile-toggle{padding:5px 8px}.hero h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* Knowledge articles */
.article-wrap{max-width:1000px}.knowledge-article{max-width:800px;margin:0 auto 80px}.article-header{padding:25px 0}.article-header h1{font-size:clamp(28px,4vw,42px);line-height:1.35;margin:22px 0}.article-summary{font-size:19px;line-height:1.9;color:#425c4b}.article-meta{font-size:13px;color:#657568}.article-keypoints{padding:26px 30px;background:#edf3df;border-radius:22px}.article-keypoints h2{font-size:20px;margin-top:0}.knowledge-article li{line-height:1.95;margin:8px 0}.article-scope{font-size:14px;border-top:1px solid #d3dfc5;padding-top:15px;color:#52654f}.article-toc{margin:26px 0;padding:24px 30px;border:1px solid #dce5d5;border-radius:20px}.article-toc ol{columns:2;column-gap:30px;padding-left:22px}.article-toc li{break-inside:avoid;font-size:15px}.article-section{scroll-margin-top:100px;padding-top:26px}.article-section h2{font-size:25px;line-height:1.5;margin-bottom:18px}.article-section h3{font-size:19px;margin-top:24px}.article-section p,.article-section li{font-size:17px;line-height:2;text-align:left}.article-section p{margin:15px 0}.article-citations{display:inline-flex;gap:7px;font-size:13px}.article-citations a{color:#386d41;text-decoration:underline}.article-sources{margin-top:36px;border-top:1px solid #dce5d5}.article-sources li{padding:14px 0;overflow-wrap:anywhere;scroll-margin-top:100px}.article-sources li>a{font-size:15px;text-decoration:underline}.article-sources li p{font-size:14px;line-height:1.7;margin:6px 0}.article-sources small{color:#657568}.article-related{padding:24px;background:#f0f4e9;border-radius:20px;margin-top:24px}.article-related h2{font-size:20px}.article-related a{display:inline-block;margin:6px 20px 6px 0;text-decoration:underline}.article-list{margin:18px 0 40px}.article-list .result{display:block;margin-bottom:12px}.article-list .result strong{line-height:1.6}.article-list small{display:block;margin-top:10px;color:#647b69}.knowledge-article a:hover{color:#28713c}.knowledge-article a:focus-visible{outline:3px solid #c6d866;outline-offset:4px}@media(max-width:600px){.article-toc ol{columns:1}.article-keypoints,.article-toc{padding:20px}.article-section p,.article-section li{font-size:16px}.article-header{padding-top:12px}.article-summary{font-size:17px}.article-section h2{font-size:22px}}