:root{
 --forest:#294B3A;--forest-deep:#1D3529;--moss:#71836A;--mist:#E6ECE3;
 --wood:#76543B;--wood-deep:#443329;--gold:#C59A3D;--pale-gold:#F3E8C8;
 --canvas:#F7F5EE;--white:#FFFFFF;--ink:#26342B;--body:#343A33;
 --muted:#62685F;--line:#D9D8CC;--content:1220px;--reading:760px;--radius:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--canvas);color:var(--body);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.82}
img{display:block;max-width:100%;width:auto;height:auto;object-fit:contain}
a{color:var(--forest);text-decoration-thickness:1px;text-underline-offset:4px;overflow-wrap:anywhere}
a:hover{color:var(--wood)}
button{font:inherit}
p,h1,h2,h3,li,small,strong,span{overflow-wrap:anywhere}
h1,h2,h3{color:var(--ink);line-height:1.3;margin-top:0}
h1{font-size:clamp(30px,3.2vw,44px);letter-spacing:-.035em}
h2{font-size:clamp(22px,2.2vw,28px);letter-spacing:-.02em}
h3{font-size:19px}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--content);margin-inline:auto;padding-inline:30px;min-width:0}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:var(--white);padding:10px 14px;border:2px solid var(--gold);border-radius:6px}
.skip-link:focus{top:12px}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:relative;z-index:10}
.header-top{min-height:76px;display:flex;align-items:center;gap:26px}
.brand-area{display:flex;align-items:center;gap:13px;min-width:0;flex:0 0 auto}
.brand-mark{display:inline-flex;align-items:center;max-width:180px}
.brand-mark img{max-height:36px;max-width:180px;width:auto;height:auto}
.brand-wordmark,.footer-wordmark{font-weight:800;letter-spacing:.04em;text-decoration:none;color:var(--forest);font-size:23px;white-space:nowrap}
.brand-wordmark span{color:var(--gold)}
.brand-tagline{font-size:12px;color:var(--muted);line-height:1.4;max-width:125px}
.core-nav{display:flex;align-items:center;justify-content:center;gap:clamp(10px,1.5vw,22px);flex:1;min-width:0}
.core-nav a,.route-link{font-size:14px;font-weight:650;text-decoration:none;padding:10px 2px;border-bottom:2px solid transparent}
.core-nav a[aria-current=page],.route-link[aria-current=page]{color:var(--forest-deep);border-color:var(--gold)}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.route-link{white-space:nowrap}
.menu-toggle{min-height:44px;display:inline-flex;align-items:center;gap:9px;padding:8px 13px;border:1px solid var(--forest);border-radius:7px;background:var(--forest);color:var(--white);font-weight:650;cursor:pointer}
.menu-toggle:hover{background:var(--forest-deep)}
.menu-symbol{font-size:19px;line-height:1}
.topic-panel{padding-top:20px;padding-bottom:26px;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:20px}
.topic-panel[hidden]{display:none}
.topic-group{min-width:0}
.topic-group h2{font-size:17px;margin:0 0 4px;color:var(--forest)}
.topic-group>p{font-size:12px;color:var(--muted);margin:0 0 10px}
.topic-group ul{list-style:none;margin:0;padding:0}
.topic-group li+li{margin-top:5px}
.topic-group li a{display:block;padding:7px 8px;border-radius:6px;text-decoration:none;min-width:0}
.topic-group li a:hover,.topic-group li a[aria-current=page]{background:var(--mist)}
.topic-group li a span{display:block;font-size:14px;font-weight:650;color:var(--ink)}
.topic-group li a small{display:block;font-size:12px;color:var(--muted);line-height:1.5}
.topic-group li a[aria-current=page] span{color:var(--forest);text-decoration:underline;text-underline-offset:3px}
.page-container{padding-top:24px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs [aria-current=page]{color:var(--forest);font-weight:650}
.page-heading{max-width:900px;padding-bottom:18px}
.page-heading h1{margin-bottom:12px}
.page-lead{font-size:17px;line-height:1.85;color:#4D554C;max-width:850px;margin-bottom:0}
.section-index{display:flex;gap:18px;align-items:flex-start;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:13px 0;margin:8px 0 36px}
.index-label{font-size:12px;color:var(--muted);font-weight:700;flex:0 0 auto;padding-top:3px}
.section-index ol{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;padding:0;margin:0}
.section-index a{font-size:13px;text-decoration:none;color:var(--forest)}
.article-container{max-width:var(--reading);padding-bottom:10px}
.article-section{padding:26px 0 30px;border-bottom:1px solid var(--line);scroll-margin-top:20px}
.article-section:first-child{padding-top:8px}
.section-heading{display:flex;align-items:flex-start;gap:13px;margin-bottom:14px}
.section-heading h2{margin:0}
.section-number{font-size:12px;font-weight:800;color:var(--wood);background:var(--pale-gold);border-radius:5px;padding:3px 7px;line-height:1.6;flex:0 0 auto}
.article-section p{font-size:16px;line-height:1.9;margin:0 0 13px}
.detail-list{margin:10px 0 0;padding-left:22px}
.detail-list li{padding:3px 0 3px 4px}
.article-image{max-width:440px;margin:0 auto 28px;padding:12px}
.media-figure{width:min(100%,440px);max-width:100%;min-width:0;margin:0;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
.media-figure img{width:auto;height:auto;max-width:100%;max-height:380px;margin-inline:auto;object-fit:contain}
.related-reading{display:grid;grid-template-columns:minmax(190px,.7fr) minmax(0,1.7fr);gap:30px;padding-top:38px;padding-bottom:58px}
.related-reading h2{font-size:22px;margin:0}
.related-reading ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.related-reading li{padding:13px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.55);min-width:0}
.related-reading li a{font-weight:700;text-decoration:none;display:block;margin-bottom:5px}
.related-reading li span{display:block;font-size:12px;color:var(--muted);line-height:1.55}
.site-footer{background:var(--forest-deep);color:#F7F5EE;padding:42px 0 24px}
.footer-top{display:grid;grid-template-columns:minmax(180px,.7fr) minmax(0,2.3fr);gap:38px}
.footer-wordmark{color:var(--white);font-size:25px}
.footer-brand p{color:#DCE4D9;font-size:14px;max-width:230px;margin:12px 0}
.footer-brand>a:last-child{color:#F3E8C8;font-size:13px}
.footer-index{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.footer-index section{min-width:0}
.footer-index h2{font-size:15px;color:#F3E8C8;margin:0 0 12px}
.footer-index ul{list-style:none;margin:0;padding:0}
.footer-index li{margin:5px 0}
.footer-index a,.footer-bottom a{color:#F7F5EE;font-size:12px;text-decoration:none}
.footer-index a[aria-current=page]{text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:32px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;align-items:flex-start}
.footer-bottom p{font-size:12px;color:#DCE4D9;margin:0}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:10px 18px}
.mobile-quick-nav{display:none}

/* Homepage: seven distinct editorial modules. */
.home-container{padding-top:30px;padding-bottom:72px}
.home-hero{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:42px;align-items:center;padding:26px 0 58px}
.home-hero.no-media{grid-template-columns:minmax(0,1fr)}
.hero-copy{min-width:0}
.hero-copy h1{font-size:clamp(34px,3.4vw,46px);margin:0 0 10px}
.hero-claim{font-size:clamp(21px,2.1vw,28px);font-weight:700;color:var(--forest);line-height:1.45;margin-bottom:14px}
.hero-intro{max-width:620px;color:#4D554C;font-size:17px}
.hero-media{min-width:0;display:flex;justify-content:center}
.hero-figure{width:min(100%,500px);max-height:330px}
.hero-figure img{max-height:310px}
.hero-links{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:24px}
.text-link{font-weight:700;text-decoration:none;display:inline-flex;gap:9px;align-items:center;border-bottom:1px solid var(--gold);padding:5px 0}
.primary-link{background:var(--forest);color:var(--white);padding:10px 15px;border:1px solid var(--forest);border-radius:7px}
.primary-link:hover{color:var(--white);background:var(--forest-deep)}
.secondary-link{margin-left:16px}
.module-heading{max-width:720px;margin-bottom:22px}
.module-heading h2{margin:0 0 8px}
.module-heading p:last-child{color:var(--muted);margin-bottom:0}
.observation-index{padding:36px 0 56px;border-top:1px solid var(--line)}
.observation-rail{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.observation-rail a{padding:17px 14px;text-decoration:none;min-width:0}
.observation-rail a+a{border-left:1px solid var(--line)}
.observation-rail span{display:block;font-weight:750;font-size:18px;color:var(--forest);margin-bottom:4px}
.observation-rail small{display:block;color:var(--muted);font-size:13px;line-height:1.55}
.feature-split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:42px;align-items:center;padding:45px 0 58px;border-bottom:1px solid var(--line)}
.feature-split.no-media{grid-template-columns:minmax(0,1fr)}
.feature-media,.feature-copy{min-width:0}
.feature-copy h2{margin-bottom:18px}
.annotation-list{list-style:none;margin:0 0 18px;padding:0}
.annotation-list li{display:grid;grid-template-columns:100px minmax(0,1fr);gap:14px;padding:12px 0;border-bottom:1px solid var(--line)}
.annotation-list strong{color:var(--wood);font-size:14px}
.annotation-list span{font-size:14px}
.sound-band{background:var(--mist);border-radius:12px;padding:30px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:28px;align-items:center;margin:58px 0}
.sound-band.no-media{grid-template-columns:minmax(0,1fr)}
.sound-copy h2{margin-bottom:10px}
.sound-copy>p:not(.eyebrow){max-width:650px}
.sound-points{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.sound-points span{font-size:13px;color:var(--forest);border:1px solid #B9C7B4;border-radius:20px;padding:5px 11px}
.sound-media,.story-media,.workbench-media,.trust-media{min-width:0;display:flex;justify-content:center}
.story-feature{padding:16px 0 58px;border-bottom:1px solid var(--line)}
.story-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:38px;align-items:center}
.story-layout.no-media{grid-template-columns:minmax(0,1fr)}
.story-axis{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.story-axis li{border-top:2px solid var(--gold);padding-top:12px;min-width:0}
.story-axis li>span{display:block;color:var(--wood);font-size:12px;font-weight:800;margin-bottom:7px}
.story-axis strong,.story-axis small{display:block}
.story-axis strong{font-size:16px;color:var(--forest)}
.story-axis small{font-size:12px;color:var(--muted);line-height:1.55;margin-top:5px}
.inline-links{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:22px}
.inline-links a{font-weight:650;text-decoration:none}
.workbench-feature{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:42px;align-items:center;padding:58px 0}
.workbench-feature.no-media{grid-template-columns:minmax(0,1fr)}
.workbench-copy h2{margin-bottom:10px}
.workbench-steps{padding-left:24px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px 24px;margin:18px 0}
.workbench-steps li{padding-left:3px}
.trust-feature{background:var(--white);border:1px solid var(--line);border-radius:12px}
.trust-heading{background:var(--forest-deep);color:var(--white);padding:24px 28px;border-radius:11px 11px 0 0}
.trust-heading .eyebrow{color:var(--pale-gold)}
.trust-heading h2{color:var(--white);margin-bottom:8px}
.trust-heading p:last-child{color:#E4E9E0;margin:0}
.trust-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:center;padding:24px}
.trust-layout.no-media{grid-template-columns:minmax(0,1fr)}
.trust-checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.trust-checks div{border-left:2px solid var(--gold);padding:5px 12px;min-width:0}
.trust-checks strong,.trust-checks span{display:block}
.trust-checks strong{color:var(--forest);margin-bottom:3px}
.trust-checks span{font-size:13px;color:var(--muted)}
.trust-links{display:flex;flex-wrap:wrap;gap:10px 22px;padding:0 24px 24px}
.trust-links a{font-size:14px;font-weight:700}
.home-closing{padding:58px 0 0;display:grid;grid-template-columns:1.1fr 1.5fr auto;gap:28px;align-items:center}
.home-closing h2{margin:0}
.home-closing>p{margin:0;color:var(--muted)}
.layout-archive .article-section{background:rgba(255,255,255,.55);border:1px solid var(--line);border-radius:9px;padding:22px;margin:0 0 16px}
.layout-workflow .article-section,.layout-timeline .article-section{border-left:3px solid var(--gold);padding-left:20px}
.layout-routes .article-section{background:var(--white);border:1px solid var(--line);border-radius:9px;padding:22px;margin-bottom:14px}
.layout-checklist .detail-list,.layout-evidence .detail-list{background:var(--mist);padding:13px 18px 13px 35px;border-radius:7px}
.layout-observation .article-section:nth-child(even){padding-left:20px;border-left:2px solid var(--moss)}
.layout-notebook .article-section:first-child{background:#F0EEE4;padding:24px;border-radius:9px}
.layout-safety .article-section{border-bottom:1px solid #C9D2C6}
.layout-principles .article-section{padding-top:30px;padding-bottom:32px}
.layout-comparison .article-section:nth-child(odd){background:rgba(243,232,200,.25);padding:20px;border-radius:8px}
.layout-policy .article-section{max-width:760px}
.faq-list{max-width:850px;padding-bottom:16px}
.faq-group{margin:0 0 30px;scroll-margin-top:20px}
.faq-group h2{font-size:22px;border-bottom:1px solid var(--line);padding-bottom:12px}
.faq-item{border-bottom:1px solid var(--line);padding:13px 0}
.faq-item summary{cursor:pointer;font-weight:700;color:var(--forest);padding:5px 28px 5px 0;position:relative;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";position:absolute;right:2px;top:3px;color:var(--wood);font-size:18px}
.faq-item[open] summary::after{content:"−"}
.faq-item p{margin:10px 0 3px;max-width:780px}
@media(max-width:1100px){
 .container{padding-inline:22px}
 .header-top{gap:15px}
 .brand-tagline{display:none}
 .core-nav{gap:12px}
 .core-nav a{font-size:13px}
 .topic-panel{grid-template-columns:repeat(3,minmax(0,1fr))}
 .footer-index{grid-template-columns:repeat(3,minmax(0,1fr))}
 .home-hero{gap:26px}
}
@media(max-width:820px){
 .header-top{min-height:68px;gap:12px}
 .core-nav{display:none}
 .brand-area{flex:1}
 .header-actions{gap:12px}
 .topic-panel{grid-template-columns:repeat(2,minmax(0,1fr));padding-top:16px}
 .footer-top{grid-template-columns:1fr;gap:28px}
 .footer-index{grid-template-columns:repeat(3,minmax(0,1fr))}
 .related-reading{grid-template-columns:1fr;gap:16px}
 .related-reading ul{grid-template-columns:repeat(3,minmax(0,1fr))}
 .home-hero,.feature-split,.sound-band,.story-layout,.workbench-feature,.trust-layout{grid-template-columns:minmax(0,1fr)}
 .hero-media{justify-content:flex-start}
 .hero-figure{width:min(100%,500px)}
 .story-axis{grid-template-columns:repeat(2,minmax(0,1fr))}
 .home-closing{grid-template-columns:1fr 1fr}
 .home-closing .text-link{grid-column:1/-1}
}
@media(max-width:600px){
 body{font-size:16px;padding-bottom:calc(60px + env(safe-area-inset-bottom))}
 .container{padding-inline:16px}
 .header-top{min-height:64px;padding-inline:16px}
 .brand-wordmark{font-size:21px}
 .brand-mark img{max-height:32px;max-width:150px}
 .header-actions{gap:9px}
 .route-link{font-size:13px;padding:8px 0}
 .menu-toggle{padding:7px 10px;min-height:44px;font-size:13px}
 .topic-panel{grid-template-columns:minmax(0,1fr);gap:13px;padding-top:14px;padding-bottom:18px}
 .topic-group{border-bottom:1px solid var(--line);padding-bottom:10px}
 .topic-group ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px}
 .topic-group li+li{margin-top:0}
 .page-container{padding-top:18px}
 .breadcrumbs{margin-bottom:18px;font-size:12px}
 .page-heading{padding-bottom:14px}
 .page-heading h1{font-size:29px}
 .page-lead{font-size:16px;line-height:1.82}
 .section-index{display:block;margin:7px 0 25px}
 .index-label{display:block;margin-bottom:8px}
 .section-index ol{gap:7px 14px}
 .section-index a{font-size:12px}
 .article-section{padding:22px 0 25px}
 .article-section p{font-size:16px;line-height:1.85}
 .section-heading{gap:10px}
 .section-heading h2{font-size:21px}
 .article-image{margin-bottom:20px}
 .media-figure{padding:10px}
 .media-figure img{max-height:300px}
 .related-reading{padding-top:28px;padding-bottom:38px}
 .related-reading ul{grid-template-columns:minmax(0,1fr)}
 .related-reading li{padding:12px}
 .footer-top{gap:24px}
 .footer-index{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 14px}
 .footer-bottom{display:block;margin-top:25px}
 .footer-bottom nav{margin-top:12px}
 .site-footer{padding-top:32px}
 .home-container{padding-top:16px;padding-bottom:38px}
 .home-hero{gap:20px;padding:12px 0 36px}
 .hero-copy h1{font-size:34px}
 .hero-claim{font-size:22px}
 .hero-intro{font-size:16px}
 .hero-figure img{max-height:230px}
 .hero-links{gap:10px 18px;margin-top:18px}
 .observation-index{padding:28px 0 36px}
 .observation-rail{grid-template-columns:repeat(2,minmax(0,1fr))}
 .observation-rail a{padding:13px 10px}
 .observation-rail a+a{border-left:0}
 .observation-rail a:nth-child(even){border-left:1px solid var(--line)}
 .observation-rail a:nth-child(n+3){border-top:1px solid var(--line)}
 .feature-split,.workbench-feature{padding:34px 0}
 .sound-band{padding:20px 16px;margin:34px 0}
 .story-feature{padding-bottom:35px}
 .story-axis{grid-template-columns:repeat(2,minmax(0,1fr))}
 .workbench-steps{grid-template-columns:minmax(0,1fr);gap:5px}
 .annotation-list li{grid-template-columns:80px minmax(0,1fr);gap:8px}
 .trust-heading{padding:20px 18px}
 .trust-layout{padding:18px;gap:16px}
 .trust-checks{grid-template-columns:minmax(0,1fr)}
 .trust-links{padding:0 18px 20px;gap:10px 16px}
 .home-closing{grid-template-columns:minmax(0,1fr);gap:13px;padding-top:35px}
 .home-closing .text-link{grid-column:auto}
 .mobile-quick-nav{position:fixed;z-index:20;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));height:calc(58px + env(safe-area-inset-bottom));padding:0 10px env(safe-area-inset-bottom);background:rgba(255,255,255,.98);border-top:1px solid var(--line)}
 .mobile-quick-nav a{display:flex;align-items:center;justify-content:center;min-height:44px;text-decoration:none;color:var(--muted);font-weight:700;font-size:14px}
 .mobile-quick-nav a[aria-current=page]{color:var(--forest);text-decoration:underline;text-decoration-color:var(--gold);text-underline-offset:5px}
}
@media(max-width:380px){
 .brand-wordmark{font-size:19px}
 .route-link{font-size:12px}
 .menu-toggle{font-size:12px;padding-inline:8px}
 .header-actions{gap:7px}
 .topic-group ul{grid-template-columns:minmax(0,1fr)}
 .story-axis{grid-template-columns:minmax(0,1fr)}
 .footer-index{grid-template-columns:minmax(0,1fr)}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

.task-index{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;padding-top:20px;padding-bottom:38px}
.task-index section{min-width:0;border-top:2px solid var(--gold);padding-top:10px}
.task-index h2{font-size:17px;color:var(--forest);margin:0 0 8px}
.task-index ul{list-style:none;padding:0;margin:0}
.task-index li{margin:5px 0}
.task-index a{font-size:13px;text-decoration:none}
@media(max-width:820px){.task-index{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.task-index{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 14px}}
@media(max-width:380px){.task-index{grid-template-columns:minmax(0,1fr)}}