@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@400;500;600;700&display=swap');
:root{--ink:#142937;--muted:#657783;--teal:#104e5c;--line:#dce5e9;--mist:#f4f8f9;--serif:'Noto Serif SC',serif;--sans:'Noto Sans SC',sans}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:var(--sans);background:#fff;line-height:1.7}a{color:inherit;text-decoration:none}a:hover{color:var(--teal)}button,input{font:inherit}button{cursor:pointer}.wrap{width:min(1220px,calc(100% - 88px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:8px;background:#fff;z-index:99;padding:8px}.header{height:80px;background:rgba(255,255,255,.98);border-bottom:1px solid #e7edef}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;flex-direction:column;line-height:1.4;white-space:nowrap}.brand strong{font:700 24px var(--serif);letter-spacing:.05em}.brand span{font-size:11px;color:#82929a}.nav{display:flex;align-items:center;gap:32px;font-size:14px;font-weight:500}.nav a[aria-current=page]{color:var(--teal);font-weight:700}.nav .company{color:#84949a;border-left:1px solid var(--line);padding-left:22px}.menu-button{display:none;background:transparent;border:0;font-size:26px}.hero{min-height:470px;display:flex;align-items:center;position:relative;overflow:hidden;background:#edf4f6 url('/assets/hero-road.png') center 52%/cover no-repeat}.hero:before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(251,253,253,.98),rgba(251,253,253,.92) 26%,rgba(251,253,253,.35) 57%,rgba(251,253,253,.02) 100%)}.hero-content{position:relative;padding:45px 0}.eyebrow{font-size:12px;font-weight:700;color:#59818a;letter-spacing:.15em;text-transform:uppercase}.hero h1{font:700 clamp(38px,4vw,58px)/1.3 var(--serif);letter-spacing:.045em;margin:19px 0 16px}.hero-content>p:not(.eyebrow){font-size:17px;color:#526570;line-height:1.9;margin-bottom:30px}.button{display:inline-flex;align-items:center;gap:20px;background:var(--teal);color:#fff;padding:13px 25px;border-radius:3px;font-size:14px;font-weight:600}.button:hover{background:#0a3843;color:#fff}.hero-side{position:absolute;right:9%;top:18%;color:#315260;font:500 18px/1.9 var(--serif);letter-spacing:.2em;transform:rotate(-10deg)}.home-sections{padding-bottom:58px}.home-sections>section{padding-top:58px}.section-heading{display:flex;align-items:center;gap:26px;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:25px}.section-heading h2{font:700 27px var(--serif);margin:0;white-space:nowrap}.section-heading a{font-size:13px;color:var(--teal);margin-left:auto;white-space:nowrap}.latest-grid{display:grid;grid-template-columns:1.7fr .8fr;gap:55px}.article-card{border-bottom:1px solid var(--line);padding:5px 0 25px;margin-bottom:24px}.article-card:last-child{border-bottom:none}.article-date{color:#8a9aa3;font-size:12px}.article-card h3{font:600 21px/1.55 var(--serif);margin:8px 0}.article-card p,.file-card p{color:var(--muted);font-size:14px;margin:0 0 12px}.text-link{color:var(--teal);font-size:13px;font-weight:600}.quote{min-height:360px;background:linear-gradient(150deg,#f5fafb,#e8f1f4);padding:45px 34px;position:relative;overflow:hidden}.quote:after{content:'';position:absolute;width:400px;height:150px;bottom:-95px;right:-70px;border-radius:50%;border:30px solid #dcebf0;opacity:.5;transform:rotate(-20deg)}.quote span{font-size:11px;letter-spacing:.3em;color:#7899a3}.quote h3{font:600 25px/1.55 var(--serif);margin:30px 0 24px}.quote i{display:block;width:40px;border-top:2px solid var(--teal);margin-bottom:20px}.quote p{font-size:14px;color:var(--muted);margin-bottom:28px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.file-card{display:flex;gap:18px;border:1px solid var(--line);padding:26px;min-height:192px}.file-card .file-icon{width:40px;height:40px;display:grid;place-items:center;flex:none;background:#eef5f7;color:var(--teal);font-size:21px}.file-card h3{font:600 18px var(--serif);margin:4px 0 8px}.empty{width:100%;min-height:190px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:#f8fafb;border:1px solid #e9eff1;padding:26px}.empty-mark{color:#8cb2ba;font-size:24px}.empty h3{font:600 20px var(--serif);margin:8px 0}.empty p{margin:0;color:var(--muted);font-size:14px}.page-head{padding-top:68px;padding-bottom:30px;border-bottom:1px solid var(--line)}.page-head h1{font:700 clamp(34px,3.2vw,49px) var(--serif);margin:8px 0}.page-head>p:last-child{color:var(--muted);margin:0}.listing{padding-top:34px;padding-bottom:90px;max-width:940px}.listing.cards{max-width:1220px;display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.listing>.article-card{padding:18px 0 25px}.search{margin-bottom:25px}.search label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}.search div{display:flex;gap:8px}.search input{width:min(450px,100%);padding:11px 14px;border:1px solid var(--line);outline-color:var(--teal)}.search button{border:0;padding:0 20px;background:var(--teal);color:#fff}.article-detail{padding-top:50px;padding-bottom:90px}.back{font-size:13px;color:var(--muted)}.article-detail>header{max-width:900px;margin:42px 0 52px}.article-detail h1,.file-detail h1{font:700 clamp(32px,3vw,46px)/1.4 var(--serif);margin:12px 0}.lead{font-size:17px;color:#60737d}.reading{display:grid;grid-template-columns:minmax(0,800px) 220px;gap:85px}.prose{font-size:16px;line-height:1.95;min-width:0}.prose h2,.prose h3,.prose h4{font-family:var(--serif);line-height:1.5;scroll-margin-top:20px}.prose h2{font-size:27px;margin-top:2em}.prose h3{font-size:21px;margin-top:1.7em}.prose p{margin:1.2em 0}.prose a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}.prose img,.prose video{max-width:100%;height:auto}.prose pre{overflow:auto;background:#112b36;color:#eaf4f5;border-radius:5px;padding:20px;font-size:13px;line-height:1.7}.prose code:not(pre code){background:#edf3f5;padding:2px 5px;border-radius:3px}.prose table{display:block;overflow-x:auto;border-collapse:collapse;white-space:nowrap}.prose th,.prose td{border:1px solid var(--line);padding:8px 12px}.prose blockquote{border-left:3px solid #6e9da7;padding-left:18px;color:var(--muted);margin-left:0}.toc{position:sticky;top:30px;height:fit-content;border-left:1px solid var(--line);padding-left:22px;font-size:13px}.toc strong{display:block;margin-bottom:10px}.toc a{display:block;color:var(--muted);padding:5px 0}.toc a:hover{color:var(--teal)}.article-end{border-top:1px solid var(--line);padding-top:24px;margin-top:48px;display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.article-end a{color:var(--teal)}.category-grid{padding:42px 0 90px;display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.category-grid section{padding:32px;border:1px solid var(--line)}.category-grid h2{font:600 22px var(--serif);margin:7px 0}.category-grid p:not(.eyebrow){color:var(--muted);font-size:14px}.about-copy{padding-top:40px;padding-bottom:100px;max-width:760px;font-size:17px;color:#51656f}.about-copy a{color:var(--teal);text-decoration:underline}.file-detail{padding-top:50px;padding-bottom:120px}.file-detail>.eyebrow{margin-top:55px}.file-detail dl{max-width:760px;margin:40px 0}.file-detail dl div{display:grid;grid-template-columns:130px 1fr;border-top:1px solid var(--line);padding:13px 0;gap:20px}.file-detail dl div:last-child{border-bottom:1px solid var(--line)}.file-detail dt{color:var(--muted)}.file-detail dd{margin:0;overflow-wrap:anywhere}.hash{font-family:monospace;font-size:13px}.footer{background:#f5f8f9;border-top:1px solid var(--line);padding:45px 0}.footer-inner{display:grid;grid-template-columns:1fr auto;gap:28px}.footer strong{font:700 22px var(--serif)}.footer p,.footer small{color:#7f909a;font-size:12px}.footer-inner>div:nth-child(2){display:flex;gap:25px;font-size:13px}.footer small{grid-column:1/-1}
.card-grid>.empty{grid-column:1/-1}
@media(max-width:900px){.wrap{width:min(100% - 40px,740px)}.header{height:70px}.nav{gap:16px;font-size:12px}.nav .company{display:none}.brand strong{font-size:20px}.hero-side{display:none}.latest-grid{grid-template-columns:1fr;gap:20px}.quote{min-height:260px}.card-grid{grid-template-columns:1fr 1fr}.reading{grid-template-columns:1fr}.toc{display:none}}
@media(max-width:640px){.wrap{width:calc(100% - 34px)}.brand span{font-size:10px}.menu-button{display:block}.nav{display:none;position:absolute;top:70px;left:0;right:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 28px #102e3b17;padding:12px 17px;flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{padding:12px 5px;border-bottom:1px solid #edf1f2;font-size:15px}.nav .company{display:block;border:0;padding:12px 5px}.hero{min-height:480px;align-items:flex-start;background-position:56% center}.hero:before{background:linear-gradient(180deg,rgba(251,253,253,.99),rgba(251,253,253,.91) 43%,rgba(251,253,253,.18))}.hero-content{padding-top:63px}.hero h1{font-size:39px}.hero-content>p:not(.eyebrow){font-size:15px}.desktop{display:none}.home-sections>section{padding-top:42px}.section-heading{gap:10px}.section-heading h2{font-size:23px}.section-heading a{font-size:12px}.article-card h3{font-size:19px}.card-grid,.listing.cards,.category-grid{grid-template-columns:1fr}.quote{padding:28px}.page-head{padding-top:43px}.article-detail>header{margin:35px 0}.prose{font-size:15px}.file-detail dl div{grid-template-columns:1fr;gap:3px}.footer-inner{grid-template-columns:1fr}.footer-inner>div:nth-child(2){flex-wrap:wrap;gap:12px 24px}.footer small{grid-column:auto}}

/* Site theme controls and night palette. */
:root{color-scheme:light}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.theme-label{font-size:12px;color:var(--muted)}
#theme-switcher{appearance:none;min-width:70px;padding:7px 22px 7px 10px;border:1px solid var(--line);border-radius:3px;background:var(--surface,#fff) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%23657783' stroke-width='1.5' d='m1 1 5 5 5-5'/%3E%3C/svg%3E") right 7px center/12px 8px no-repeat;color:var(--ink);font-size:12px;line-height:1.5}
#theme-switcher:focus-visible,.menu-button:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
:root[data-theme="dark"]{color-scheme:dark;--ink:#e8f0f2;--muted:#a8bac3;--teal:#8ccfd5;--line:#314650;--mist:#1a2c35;--surface:#182a33}
[data-theme="dark"] body{background:#101c24}
[data-theme="dark"] .skip:focus{background:#182a33}
[data-theme="dark"] .header{background:#14242c;border-color:var(--line)}
[data-theme="dark"] .brand span,[data-theme="dark"] .nav .company,[data-theme="dark"] .footer p,[data-theme="dark"] .footer small{color:#a0b4bc}
[data-theme="dark"] .hero{background-color:#182e39}
[data-theme="dark"] .hero:before{background:linear-gradient(90deg,rgba(16,28,36,.97),rgba(16,28,36,.9) 29%,rgba(16,28,36,.53) 62%,rgba(16,28,36,.27))}
[data-theme="dark"] .eyebrow,[data-theme="dark"] .article-date,[data-theme="dark"] .quote span{color:#a0c6cb}
[data-theme="dark"] .hero-content>p:not(.eyebrow),[data-theme="dark"] .lead,[data-theme="dark"] .about-copy{color:#c1d0d6}
[data-theme="dark"] .button,[data-theme="dark"] .search button{background:#286b79;color:#fff}
[data-theme="dark"] .button:hover,[data-theme="dark"] .search button:hover{background:#348294;color:#fff}
[data-theme="dark"] .quote{background:linear-gradient(150deg,#1b323c,#213b46)}
[data-theme="dark"] .quote:after{border-color:#365866;opacity:.45}
[data-theme="dark"] .file-card .file-icon{background:#25424d}
[data-theme="dark"] .empty{background:#192b34;border-color:var(--line)}
[data-theme="dark"] .empty-mark{color:#8ccfd5}
[data-theme="dark"] .search input{background:#172a33;color:var(--ink)}
[data-theme="dark"] .search input::placeholder{color:#9bafb8}
[data-theme="dark"] .prose code:not(pre code){background:#263a44;color:#e6f1f3}
[data-theme="dark"] .prose pre{background:#0c171d;color:#eaf4f5}
[data-theme="dark"] .footer{background:#14242c}
[data-theme="dark"] .nav a{border-color:var(--line)}
@media(max-width:900px){.menu-button{display:block;color:var(--ink)}.nav{display:none;position:absolute;top:70px;left:0;right:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 28px #102e3b17;padding:12px 20px;flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{padding:12px 5px;border-bottom:1px solid var(--line);font-size:15px}.nav .company{display:block;border:0;padding:12px 5px}[data-theme="dark"] .nav{background:#172a33;box-shadow:0 14px 28px #03090dcc}}
@media(max-width:640px){.header-actions{gap:7px}.theme-label{display:none}.menu-button{color:var(--ink)}[data-theme="dark"] .nav{background:#172a33;box-shadow:0 14px 28px #03090dcc}[data-theme="dark"] .hero:before{background:linear-gradient(180deg,rgba(16,28,36,.97),rgba(16,28,36,.91) 43%,rgba(16,28,36,.42))}}