@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');
:root{--ink:#17243c;--muted:#64728b;--blue:#315de8;--pale:#f4f7ff;--line:#e5eaf3;--white:#fff;--font:"DM Sans","Noto Sans SC",system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}.site-header{height:82px;border-bottom:1px solid #eff2f8;background:rgba(255,255,255,.92)}.header-inner,.brand,.header-inner nav,.footer-inner,.footer-bottom{display:flex;align-items:center}.header-inner{height:100%;justify-content:space-between}.brand{gap:11px;font-weight:700;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--blue);color:#fff;font:700 18px "DM Sans",sans-serif}.brand small{display:block;margin-top:-5px;color:#8490a4;font-size:10px;font-weight:500;letter-spacing:.05em}.header-inner nav{gap:34px;color:#50607a;font-size:14px}.header-inner nav a:hover,.text-link:hover{color:var(--blue)}.hero{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:36px;min-height:462px;padding-block:58px 48px}.eyebrow{color:var(--blue);font:500 11px "DM Mono",monospace;letter-spacing:.14em}.hero h1{margin:16px 0 17px;font-size:clamp(36px,5vw,56px);line-height:1.25;letter-spacing:-.055em}.hero h1 span{color:var(--blue)}.hero-copy>p{max-width:510px;margin:0 0 25px;color:var(--muted);font-size:16px}.button{display:inline-flex;align-items:center;gap:18px;padding:11px 17px;border-radius:7px;background:var(--blue);color:white;font-size:14px;font-weight:600;box-shadow:0 7px 18px #315de82a}.button:hover{background:#244bd1}.button span{font-size:18px}.hero-art{position:relative;display:grid;place-items:center;min-height:300px;overflow:hidden;border-radius:18px;background:linear-gradient(145deg,#f3f6ff,#eaf0ff 70%,#f8faff)}.hero-art:before,.hero-art:after{position:absolute;content:"";border:1px solid #d5e0ff;border-radius:50%}.hero-art:before{width:300px;height:300px}.hero-art:after{width:390px;height:390px}.code-card{z-index:1;width:min(310px,78%);padding:23px 26px;border:1px solid #e4eaf7;border-radius:12px;background:#fff;box-shadow:0 20px 55px #193b8b1c;font:13px/1.8 "DM Mono",monospace}.code-card p{margin:4px 0;color:#465675}.code-card p b{color:#7356cc;font-weight:500}.code-card em{color:#178b72;font-style:normal}.code-card .indent{padding-left:20px}.dots{display:flex;gap:5px;margin-bottom:18px}.dots i{width:7px;height:7px;border-radius:50%;background:#c8d4ed}.dots i:first-child{background:#ff9d93}.dots i:nth-child(2){background:#f3c868}.dots i:nth-child(3){background:#78d4b7}.art-caption{margin-top:17px;padding-top:12px;border-top:1px solid #edf0f7;color:#8390a5;font-family:var(--font);font-size:11px}.orbit{position:absolute;width:8px;height:8px;border-radius:50%;background:#7795ff}.orbit-a{top:57px;right:75px}.orbit-b{bottom:50px;left:67px;width:6px;height:6px;background:#75cfb6}.intro-strip{display:grid;grid-template-columns:repeat(3,1fr);padding:22px 0 26px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.intro-strip>div{display:flex;flex-direction:column;padding:0 28px;border-right:1px solid var(--line)}.intro-strip>div:first-child{padding-left:0}.intro-strip>div:last-child{border:0}.intro-strip b{font-size:14px}.intro-strip span{color:#8590a3;font-size:12px}.content-section{padding-block:77px 88px;scroll-margin-top:25px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:26px}.section-heading h2,.about-band h2{margin:5px 0 0;font-size:32px;letter-spacing:-.04em;line-height:1.35}.section-heading>p{margin:0;color:var(--muted);font-size:13px}.filter-row{display:flex;gap:8px;margin-bottom:20px}.filter{padding:7px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#68758b;font-size:12px;cursor:pointer}.filter:hover,.filter.active{border-color:#d9e2ff;background:#f1f4ff;color:var(--blue)}.filter span{margin-left:3px;color:#9aa5b8}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.article-card{display:flex;min-height:247px;flex-direction:column;padding:21px 21px 18px;border:1px solid var(--line);border-radius:10px;transition:.2s ease}.article-card:hover{transform:translateY(-3px);border-color:#cbd8ff;box-shadow:0 12px 28px #274d9410}.card-icon{display:grid;place-items:center;width:38px;height:38px;margin-bottom:13px;border-radius:10px;font:500 16px "DM Mono",monospace}.blue{background:#edf2ff;color:#4267de}.violet{background:#f2edff;color:#8058c7}.orange{background:#fff3e9;color:#dc8a4c}.green{background:#eaf8f2;color:#319875}.pink{background:#fff0f2;color:#d16c83}.cyan{background:#eaf8fb;color:#3298ae}.category{color:#8490a4;font-size:10px;letter-spacing:.04em}.article-card h3{margin:7px 0 7px;font-size:16px;line-height:1.55;letter-spacing:-.02em}.article-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.8}.read-link{display:flex;justify-content:space-between;margin-top:auto;padding-top:14px;color:#66748b;font-size:11px}.read-link b{color:var(--blue);font-size:15px}.about-band{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:60px;margin-bottom:82px;padding:38px 45px;border-radius:13px;background:var(--pale)}.about-band h2{margin-top:10px;font-size:27px}.about-band p{margin:0 0 13px;color:#697790;font-size:13px}.text-link{color:var(--blue);font-size:13px;font-weight:600}.text-link span{margin-left:7px}.site-footer{padding:28px 0 16px;border-top:1px solid var(--line);background:#fbfcff}.footer-inner{justify-content:space-between;min-height:48px}.footer-brand{font-size:14px}.footer-brand .brand-mark{width:31px;height:31px;border-radius:10px;font-size:14px}.footer-inner>p{margin:0;color:#8994a7;font-size:12px}.beian{color:#69768c;font-size:12px;text-decoration:underline;text-underline-offset:3px}.beian:hover{color:var(--blue)}.footer-bottom{justify-content:space-between;margin-top:17px;padding-top:11px;border-top:1px solid #edf0f6;color:#9aa4b4;font-size:10px}.footer-bottom a:hover{color:var(--blue)}
/* Article and utility pages */
.page-hero{padding:56px 0 34px}.breadcrumbs{color:#8c97a9;font-size:12px}.breadcrumbs a:hover{color:var(--blue)}.page-hero h1{max-width:800px;margin:17px 0 13px;font-size:clamp(31px,4vw,44px);line-height:1.35;letter-spacing:-.04em}.page-hero .lead{max-width:740px;margin:0;color:var(--muted);font-size:16px}.page-meta{display:flex;gap:13px;margin-top:17px;color:#8994a7;font-size:11px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) 235px;gap:56px;align-items:start;padding-bottom:78px}.article-body{font-size:15px;line-height:1.95;color:#40506a}.article-body h2{margin:34px 0 9px;color:var(--ink);font-size:23px;line-height:1.45;letter-spacing:-.025em}.article-body h3{margin:25px 0 7px;color:var(--ink);font-size:18px}.article-body p{margin:11px 0}.article-body ul,.article-body ol{padding-left:23px}.article-body li{padding:2px 0}.article-body code{padding:2px 5px;border-radius:4px;background:#f0f3f9;color:#3454a5;font: .9em "DM Mono",monospace}.article-body pre{overflow:auto;margin:15px 0;padding:16px 18px;border:1px solid #e8edf6;border-radius:8px;background:#f7f9fd;color:#30435e;font:12px/1.75 "DM Mono",monospace}.article-body pre code{padding:0;background:transparent;color:inherit}.article-body blockquote{margin:18px 0;padding:12px 17px;border-left:3px solid #7390f7;background:#f5f7ff;color:#63718b}.article-body a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.article-aside{position:sticky;top:25px;padding:19px;border:1px solid var(--line);border-radius:9px;background:#fbfcff}.article-aside b{display:block;margin-bottom:9px;font-size:12px}.article-aside a{display:block;padding:4px 0;color:#748198;font-size:11px}.article-aside a:hover{color:var(--blue)}.sources{margin-top:34px;padding-top:17px;border-top:1px solid var(--line);font-size:12px}.sources h2{margin:0 0 7px;font-size:16px}.sources ul{padding-left:18px}.sources li{margin:3px 0}.note-box{margin:18px 0;padding:14px 16px;border:1px solid #dce5ff;border-radius:8px;background:#f6f8ff;color:#596a87;font-size:13px}.about-page{max-width:760px;padding-bottom:85px}.about-page h2{margin-top:32px;font-size:22px}.about-page p,.about-page li{color:#52617b}.not-found{display:grid;min-height:calc(100vh - 220px);place-items:center;text-align:center}.not-found .number{color:#dce5ff;font:700 90px/1 "DM Sans",sans-serif}.not-found h1{margin:4px 0;font-size:30px}.not-found p{color:var(--muted)}.not-found .button{margin-top:12px}
@media(max-width:850px){.hero{min-height:0;grid-template-columns:1fr 0.9fr;gap:18px;padding-block:48px}.hero-art{min-height:270px}.article-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:minmax(0,1fr) 190px;gap:25px}.about-band{gap:30px;padding:32px}.article-card{min-height:235px}}
@media(max-width:600px){body{font-size:15px}.wrap{width:calc(100% - 36px)}.site-header{height:68px}.header-inner nav{gap:19px;font-size:12px}.brand{font-size:14px}.brand-mark{width:34px;height:34px}.hero{grid-template-columns:1fr;padding-block:39px 32px;gap:24px}.hero h1{font-size:39px}.hero-copy>p{font-size:14px}.hero-art{min-height:220px}.code-card{padding:17px 21px}.intro-strip{grid-template-columns:1fr;padding:7px 0}.intro-strip>div,.intro-strip>div:first-child{padding:11px 2px;border-right:0;border-bottom:1px solid var(--line)}.intro-strip>div:last-child{border:0}.intro-strip b{font-size:13px}.intro-strip span{font-size:11px}.content-section{padding-block:53px 58px}.section-heading{display:block}.section-heading h2{font-size:27px}.section-heading>p{margin-top:8px;font-size:12px}.filter-row{gap:6px;overflow:auto;padding-bottom:3px}.filter{flex:none;padding:6px 10px;font-size:11px}.article-grid{grid-template-columns:1fr;gap:10px}.article-card{min-height:0;padding:17px}.article-card h3{font-size:15px}.article-card p{font-size:12px}.card-icon{width:34px;height:34px;margin-bottom:8px}.read-link{padding-top:11px}.about-band{grid-template-columns:1fr;gap:13px;margin-bottom:54px;padding:24px}.about-band h2{font-size:24px}.about-band p{font-size:12px}.footer-inner{flex-wrap:wrap;gap:14px}.footer-inner>p{display:none}.beian{width:100%;padding:5px 0 7px;font-size:12px}.footer-bottom{margin-top:9px}.page-hero{padding:34px 0 22px}.page-hero h1{font-size:30px}.page-hero .lead{font-size:14px}.article-layout{display:block;padding-bottom:55px}.article-aside{position:static;margin:0 0 22px}.article-aside nav{display:flex;flex-wrap:wrap;gap:5px 14px}.article-aside b{width:100%}.article-body{font-size:14px}.article-body h2{margin-top:26px;font-size:21px}.article-body pre{font-size:11px}.about-page{padding-bottom:58px}.not-found .number{font-size:75px}}
.card-icon svg{display:block;width:18px;height:18px}