@charset "UTF-8";
/* Responsive visual system: clear typography and deliberate reading rhythm. */
:root {
  --canvas:#10131b;
  --canvas-raised:#171c25;
  --surface:#1d2430;
  --surface-soft:#242c38;
  --surface-hover:#2b3542;
  --line:rgba(227,236,243,.13);
  --line-heavy:rgba(227,236,243,.25);
  --text:#f1f4f2;
  --text-body:#ccd3d8;
  --text-muted:#9ca8b2;
  --accent:#b9ed67;
  --accent-dark:#17230e;
  --accent-secondary:#82c6bf;
  --warm:#f2d8a9;
  --radius-xl:36px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow:0 30px 80px rgba(0,0,0,.22);
  --width:1200px;
  --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --transition:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--canvas);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
body::before{content:"";position:absolute;top:0;left:0;right:0;height:670px;background:radial-gradient(ellipse at 72% 16%,rgba(92,123,91,.10),transparent 50%);pointer-events:none;z-index:-1}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
a,button,input,summary{transition:color var(--transition),background-color var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
button,input{font:inherit}
button{cursor:pointer}
img,svg,video{max-width:100%;height:auto}
p{margin:0 0 1.25em}
h1,h2,h3,h4{margin:0;line-height:1.22;letter-spacing:-.035em;font-weight:740}
h1{font-size:clamp(2.5rem,5.1vw,5.8rem)}
h2{font-size:clamp(1.9rem,3.5vw,3.5rem)}
h3{font-size:clamp(1.17rem,1.6vw,1.5rem)}
ul,ol{padding-left:1.3rem}
::selection{color:var(--accent-dark);background:var(--accent)}
.shell{width:min(calc(100% - 88px),var(--width));margin-inline:auto}
.skip-link{position:absolute;top:-70px;left:20px;z-index:100;padding:12px 20px;background:var(--accent);color:var(--accent-dark)}
.skip-link:focus{top:12px}
.kicker,.eyebrow{font-size:.73rem;letter-spacing:.21em;text-transform:uppercase;font-weight:760;color:var(--accent)}
.kicker{display:block;margin-bottom:20px}
.site-header{position:relative;z-index:20;border-bottom:1px solid var(--line);background:rgba(16,19,27,.92)}
.header-inner{min-height:94px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.wordmark{display:inline-flex;align-items:center;gap:13px;flex-shrink:0;color:var(--text)}
.wordmark:hover{color:var(--text)}
.wordmark-sign{width:48px;height:48px;border:2px solid var(--accent);border-radius:14px;display:grid;place-items:center;font-size:1.55rem;font-weight:900;color:var(--accent);letter-spacing:-.12em;padding-right:4px;transform:rotate(-7deg)}
.wordmark-text{display:flex;flex-direction:column;line-height:1.18;font-size:1.2rem;font-weight:760;letter-spacing:.04em}
.wordmark-text small{margin-top:7px;color:var(--text-muted);font-size:.6rem;font-weight:650;letter-spacing:.18em}
.main-nav{display:flex;align-items:center;gap:clamp(15px,3vw,42px)}
.main-nav a{display:block;font-size:.9rem;font-weight:620;color:var(--text-body);padding:11px 0;white-space:nowrap}
.main-nav a:hover,.main-nav a:focus-visible{color:var(--accent)}
.menu-toggle{display:none;width:46px;height:46px;border:1px solid var(--line-heavy);border-radius:12px;background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px}
.hero{display:grid;grid-template-columns:1.07fr .93fr;align-items:center;gap:clamp(40px,6vw,100px);min-height:670px;padding-top:92px;padding-bottom:110px}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:flex;align-items:center;gap:13px;margin-bottom:28px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px rgba(185,237,103,.10)}
.hero h1{font-size:clamp(3.35rem,6vw,6.7rem);letter-spacing:-.075em;line-height:1.12;white-space:nowrap}
.hero-strong{color:var(--accent);font-style:italic}
.hero-lead{font-size:1.11rem;line-height:2;color:var(--text-body);max-width:570px;margin:34px 0}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:15px;margin-top:40px}
.button{min-height:52px;display:inline-flex;align-items:center;justify-content:center;gap:18px;padding:12px 24px;border-radius:100px;font-weight:750;font-size:.88rem;line-height:1.4;border:1px solid transparent}
.button-primary{background:var(--accent);color:var(--accent-dark)}
.button-primary:hover{background:#cffa83;color:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 25px rgba(185,237,103,.16)}
.button-quiet{background:rgba(255,255,255,.045);border-color:var(--line-heavy);color:var(--text)}
.button-quiet:hover{border-color:var(--accent);background:rgba(185,237,103,.05)}
.hero-footnote{margin-top:55px;color:var(--text-muted);font-size:.77rem;letter-spacing:.13em}
.hero-visual{height:440px;position:relative;display:flex;align-items:center;justify-content:center;isolation:isolate}
.visual-halo{position:absolute;z-index:-2;inset:4% 5%;border-radius:50%;background:radial-gradient(circle,rgba(169,227,119,.22) 0,rgba(108,158,156,.10) 28%,transparent 66%);filter:blur(26px)}
.visual-frame{width:min(100%,460px);aspect-ratio:1/.92;border:1px solid rgba(235,247,229,.24);border-radius:34px;position:relative;overflow:hidden;background:linear-gradient(140deg,rgba(61,82,83,.43),rgba(31,42,49,.48) 52%,rgba(18,24,30,.96));box-shadow:var(--shadow);transform:rotate(5deg)}
.visual-frame::before{content:"";position:absolute;inset:23px;border:1px solid rgba(236,250,225,.12);border-radius:24px}
.visual-frame::after{content:"";position:absolute;width:200%;height:2px;left:-50%;top:48%;background:linear-gradient(90deg,transparent,rgba(185,237,103,.24),transparent);transform:rotate(-29deg)}
.visual-top,.visual-bottom{position:absolute;left:48px;right:48px;display:flex;align-items:center;justify-content:space-between;gap:10px;color:#aec5bb;font-size:.64rem;letter-spacing:.17em;font-weight:780}
.visual-top{top:48px}
.visual-top i{display:block;width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 15px rgba(185,237,103,.65)}
.visual-bottom{bottom:46px}
.visual-orbit{width:54%;aspect-ratio:1;border:1px solid rgba(185,237,103,.46);border-radius:50%;position:absolute;top:22%;left:23%;display:grid;place-items:center;box-shadow:inset 0 0 70px rgba(182,234,114,.08),0 0 42px rgba(182,234,114,.08)}
.visual-orbit::before,.visual-orbit::after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(182,234,114,.2)}
.visual-orbit::before{inset:-18px}
.visual-orbit::after{inset:20px}
.visual-play{display:grid;place-items:center;width:80px;height:80px;border-radius:50%;color:var(--accent-dark);background:var(--accent);font-size:2rem;padding-left:7px;box-shadow:0 0 35px rgba(185,237,103,.25)}
.visual-bars{position:absolute;left:48px;bottom:81px;display:flex;gap:7px;height:28px;align-items:flex-end}
.visual-bars i{display:block;background:var(--accent-secondary);width:4px;border-radius:4px;opacity:.8}
.visual-bars i:nth-child(5n+1){height:28%}.visual-bars i:nth-child(5n+2){height:85%}.visual-bars i:nth-child(5n+3){height:55%}.visual-bars i:nth-child(5n+4){height:100%}.visual-bars i:nth-child(5n){height:43%}
.floating-tag{position:absolute;padding:11px 19px;background:#e3f8b6;border-radius:9px;color:#1e3021;z-index:3;font-size:.75rem;font-weight:900;letter-spacing:.12em;box-shadow:0 14px 35px rgba(0,0,0,.27)}
.floating-tag b{color:#569255;margin-left:9px}
.tag-a{top:55px;right:-14px;transform:rotate(9deg)}
.tag-b{bottom:41px;left:-35px;background:#b6e0d7;transform:rotate(-7deg)}
.lead-strip{padding-block:48px 60px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 2.15fr;gap:50px}
.side-label{font-size:.71rem;letter-spacing:.2em;color:var(--text-muted);font-weight:750;padding-top:12px}
.lead-strip h2{max-width:790px;font-size:clamp(1.85rem,3.2vw,3.2rem)}
.lead-strip p{max-width:720px;color:var(--text-muted);margin:20px 0 0;font-size:1.03rem}
.featured-section{padding-top:90px;padding-bottom:120px}
.section-top{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:42px}
.section-top h2{font-size:clamp(2rem,3.5vw,3.75rem)}
.section-link{font-size:.88rem;font-weight:750;border-bottom:1px solid var(--line-heavy);padding-bottom:8px;white-space:nowrap}
.section-link span{margin-left:12px;color:var(--accent)}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.topic-card{padding:34px 34px 30px;min-height:284px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(150deg,rgba(255,255,255,.045),rgba(255,255,255,.012));display:flex;flex-direction:column;align-items:flex-start;position:relative;overflow:hidden}
.topic-card::before{content:"";position:absolute;right:0;top:0;width:94px;height:94px;background:radial-gradient(circle at 100% 0%,rgba(185,237,103,.12),transparent 70%);pointer-events:none}
.topic-card:hover{border-color:rgba(185,237,103,.37);transform:translateY(-4px);background:linear-gradient(150deg,rgba(185,237,103,.07),rgba(255,255,255,.014))}
.topic-card__meta{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;font-size:.75rem;font-weight:760;letter-spacing:.1em;color:var(--accent);margin-bottom:24px}
.topic-card__index{color:var(--text-muted);font-variant-numeric:tabular-nums}
.topic-card h3{font-size:clamp(1.25rem,2vw,1.85rem);line-height:1.4;max-width:93%;margin-bottom:15px}
.topic-card h3 a:hover{color:var(--accent)}
.topic-card p{color:var(--text-muted);font-size:.94rem;line-height:1.8;margin:0 0 26px}
.text-link{margin-top:auto;font-size:.82rem;font-weight:780;color:var(--accent)}
.text-link span{margin-left:6px}
.wide-band{background:#c9e49f;color:#1b2920;padding:100px 0}
.wide-band-inner{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:start}
.wide-band .kicker{color:#4a6950}
.wide-band h2{font-size:clamp(2.3rem,4vw,4.7rem);line-height:1.2;letter-spacing:-.06em}
.wide-band h2 em{font-style:normal;color:#527557}
.band-columns{display:grid;gap:0}
.band-columns article{padding:22px 0 24px;border-bottom:1px solid rgba(27,41,32,.20);display:grid;grid-template-columns:45px 1fr;column-gap:18px;align-items:start}
.band-columns article:first-child{padding-top:0}
.band-columns article>span{font-size:.78rem;font-weight:790;color:#55715b;padding-top:5px}
.band-columns h3{font-size:1.35rem;grid-column:2}
.band-columns p{grid-column:2;margin:10px 0;color:#425747;font-size:.9rem;line-height:1.9}
.band-columns a{grid-column:2;display:inline-block;font-size:.82rem;font-weight:750;text-decoration:underline;text-underline-offset:5px}
.band-columns a:hover{color:#608844}
.editorial{display:grid;grid-template-columns:1fr .83fr;gap:9%;align-items:center;padding-block:150px}
.editorial h2{max-width:630px;margin:0 0 26px;line-height:1.2}
.editorial-text>p{font-size:1.05rem;color:var(--text-body);max-width:590px;line-height:2.05}
.editorial-links{margin-top:35px;border-top:1px solid var(--line)}
.editorial-links a{padding:20px 3px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:24px;font-size:.95rem;font-weight:650}
.editorial-links a span{color:var(--accent)}
.editorial-art{min-height:400px;aspect-ratio:1;display:grid;place-items:center;position:relative;border-radius:50%;background:radial-gradient(circle,rgba(174,219,162,.12),rgba(100,166,168,.06) 34%,transparent 64%);overflow:hidden}
.art-ring{position:absolute;border:1px solid rgba(185,237,103,.30);border-radius:50%;aspect-ratio:1}
.ring-1{width:77%;transform:rotate(25deg) scaleX(.54)}
.ring-2{width:77%;transform:rotate(-30deg) scaleX(.54)}
.ring-3{width:72%;transform:rotate(87deg) scaleX(.84)}
.art-core{width:190px;height:190px;border-radius:50%;background:var(--accent);display:grid;place-items:center;color:#172814;font-size:1.65rem;line-height:1.2;text-align:center;font-weight:900;letter-spacing:-.04em;box-shadow:0 0 80px rgba(185,237,103,.1)}
.bottom-teaser{padding:80px 0 105px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:30px}
.bottom-teaser h2{font-size:clamp(1.9rem,3.1vw,3.2rem)}
.site-footer{border-top:1px solid var(--line);background:#0c1016}
.footer-grid{padding:70px 0 60px;display:grid;grid-template-columns:1fr 1fr;gap:70px}
.footer-brand{font-size:1.55rem;font-weight:780;letter-spacing:-.02em}
.footer-grid p{max-width:390px;color:var(--text-muted);margin-top:18px;font-size:.9rem;line-height:1.9}
.footer-grid nav{display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:17px 40px;justify-self:end;width:min(100%,340px)}
.footer-grid nav a{font-weight:650;color:var(--text-body);font-size:.88rem}
.footer-grid nav a:hover{color:var(--accent)}
.footer-bottom{padding:23px 0 34px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:15px;color:var(--text-muted);font-size:.78rem}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:38px 0 55px;color:var(--text-muted);font-size:.81rem}
.crumbs a{color:var(--text-body)}
.crumbs a:hover{color:var(--accent)}
.page-intro{padding-bottom:65px;max-width:930px}
.page-intro h1{font-size:clamp(2.65rem,5.2vw,5.2rem);line-height:1.24;max-width:900px;letter-spacing:-.055em}
.page-intro p{color:var(--text-body);font-size:1.1rem;line-height:2;max-width:770px;margin:28px 0 0}
.listing-layout{padding-bottom:125px}
.filter-shell{display:flex;align-items:center;flex-wrap:wrap;gap:15px 25px;background:var(--canvas-raised);padding:22px 26px;border:1px solid var(--line);border-radius:var(--radius-md);margin:10px 0 80px}
.filter-shell label{font-weight:720;font-size:.86rem}
.filter-shell input{flex:1 1 280px;min-width:0;max-width:620px;border:1px solid var(--line-heavy);padding:12px 17px;border-radius:8px;background:var(--canvas);color:var(--text);outline:none}
.filter-shell input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(185,237,103,.12)}
.filter-shell input::placeholder{color:var(--text-muted)}
#filter-count{font-size:.76rem;color:var(--text-muted);margin-left:auto}
.topic-group{display:grid;grid-template-columns:.37fr 1fr;gap:70px;margin-top:90px;scroll-margin-top:100px}
.group-intro{position:sticky;top:44px;align-self:start}
.group-intro h2{font-size:clamp(1.7rem,2.5vw,2.5rem);letter-spacing:-.045em}
.group-intro p{color:var(--text-muted);font-size:.92rem;line-height:1.9;margin-top:20px}
.topic-list{border-top:1px solid var(--line-heavy)}
.index-row{border-bottom:1px solid var(--line);padding:28px 0;display:flex;align-items:center;justify-content:space-between;gap:30px}
.index-row>div>span{color:var(--accent);font-size:.72rem;font-weight:760;letter-spacing:.10em}
.index-row h3{margin:10px 0;font-size:1.24rem;line-height:1.5}
.index-row p{margin:0;color:var(--text-muted);font-size:.88rem;line-height:1.8}
.index-arrow{display:grid;place-items:center;width:42px;height:42px;min-width:42px;border:1px solid var(--line-heavy);border-radius:50%;font-size:1.25rem}
.index-arrow:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-dark);transform:rotate(45deg)}
.empty-results{margin:30px 0;padding:24px;border:1px dashed var(--line-heavy);border-radius:var(--radius-md);color:var(--text-muted)}
.article-shell{padding-bottom:100px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:clamp(45px,6vw,100px);align-items:start}
.article-head{border-bottom:1px solid var(--line-heavy);padding-bottom:48px;margin-bottom:55px}
.article-head h1{font-size:clamp(2.3rem,4.5vw,4.65rem);line-height:1.25;letter-spacing:-.05em}
.article-head>p{font-size:1.15rem;line-height:2;color:var(--text-body);margin:26px 0 25px}
.article-meta{display:flex;gap:17px 26px;flex-wrap:wrap;color:var(--text-muted);font-size:.78rem;letter-spacing:.04em}
.article-meta span+span::before{content:"/";margin-right:26px;color:var(--accent)}
.article-prose section{padding:12px 0 45px;margin-bottom:35px;border-bottom:1px solid var(--line);scroll-margin-top:25px}
.article-prose .section-number{font-size:.8rem;letter-spacing:.12em;font-weight:800;color:var(--accent);margin-bottom:15px}
.article-prose h2{font-size:clamp(1.55rem,2.25vw,2.3rem);line-height:1.35;margin-bottom:23px}
.article-prose p{font-size:1.025rem;line-height:2.2;color:var(--text-body);letter-spacing:.012em;margin:0}
.closing-note{margin-top:55px;padding:32px 40px;border-left:3px solid var(--accent);background:var(--canvas-raised);border-radius:0 var(--radius-md) var(--radius-md) 0}
.closing-note h2{font-size:1.25rem;margin-bottom:15px}
.closing-note p{color:var(--text-body);line-height:2.05;margin:0}
.article-side{position:sticky;top:38px}
.toc{padding:26px 27px 24px;background:var(--canvas-raised);border:1px solid var(--line);border-radius:var(--radius-md)}
.toc-heading{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;font-weight:790;padding-bottom:19px;border-bottom:1px solid var(--line)}
.toc-heading span{color:var(--accent);font-size:1.1rem}
.toc ol{padding-left:20px;margin:23px 0 0;display:grid;gap:16px}
.toc li{font-size:.86rem;color:var(--text-muted);line-height:1.75;padding-left:3px}
.toc li::marker{color:var(--accent-secondary)}
.toc li a:hover{color:var(--accent)}
.side-callout{padding:27px;margin-top:18px;border-radius:var(--radius-md);background:#c9e49f;color:#233628}
.side-callout>span{font-size:.68rem;letter-spacing:.16em;font-weight:850;color:#536d4b}
.side-callout h2{font-size:1.37rem;line-height:1.37;margin:17px 0}
.side-callout p{font-size:.84rem;line-height:1.87;color:#435b45;margin:0 0 25px}
.side-callout a{font-size:.82rem;font-weight:850;border-bottom:1px solid #59765b;padding-bottom:6px}
.review-list{margin-top:60px;padding:42px 45px;background:linear-gradient(125deg,#202b2a,#1a252d);border:1px solid var(--line-heavy);border-radius:var(--radius-lg)}
.review-list h2{font-size:1.9rem;margin-bottom:12px}
.review-list>p{color:var(--text-muted);font-size:.9rem}
.review-list ul{margin:28px 0 0;padding:0;list-style:none;display:grid;gap:15px}
.review-list li{padding:0 0 0 27px;position:relative;color:var(--text-body);font-size:.94rem;line-height:1.8}
.review-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--accent);font-weight:900}
.article-back{margin-top:48px}
.article-back a{font-size:.88rem;font-weight:750;border-bottom:1px solid var(--line-heavy);padding-bottom:8px}
.related{margin-top:140px;padding-top:64px;border-top:1px solid var(--line)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}
.related .topic-card{padding:26px;min-height:282px}
.related .topic-card h3{font-size:1.2rem}
.guide-page{padding-bottom:130px}
.guide-page .page-intro{max-width:990px;padding-bottom:100px}
.guide-timeline{border-top:1px solid var(--line)}
.guide-timeline>section{display:grid;grid-template-columns:240px minmax(0,1fr);gap:70px;padding:55px 0 75px;border-bottom:1px solid var(--line)}
.guide-step{font-size:4.2rem;line-height:1;font-weight:800;letter-spacing:-.09em;color:var(--accent)}
.guide-step span{display:block;font-size:.81rem;color:var(--text-muted);font-weight:690;letter-spacing:.14em;margin-top:23px}
.guide-timeline h2{font-size:clamp(1.6rem,3.1vw,2.85rem);margin-bottom:28px}
.guide-timeline p{font-size:1.01rem;line-height:2.1;color:var(--text-body);max-width:780px;margin-bottom:22px}
.guide-timeline section a{display:inline-block;color:var(--accent);font-weight:770;font-size:.89rem;margin-top:7px}
.guide-tail{display:grid;grid-template-columns:1fr 1fr;gap:55px;margin-top:105px}
.guide-tail h2{font-size:2.5rem}
.guide-tail-links{display:grid;align-self:end}
.guide-tail-links a{display:flex;justify-content:space-between;padding:15px 0;border-bottom:1px solid var(--line);font-weight:660}
.faq-page{padding-bottom:140px}
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:70px;align-items:start}
.faq-list{border-top:1px solid var(--line-heavy)}
.faq-list details{border-bottom:1px solid var(--line);padding:0}
.faq-list summary{list-style:none;cursor:pointer;padding:28px 10px 28px 0;display:flex;align-items:center;gap:22px;font-size:1.12rem;font-weight:720;line-height:1.5}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary>span{color:var(--accent);font-size:.75rem;font-weight:800;letter-spacing:.09em}
.faq-list summary>b{margin-left:auto;font-size:1.5rem;font-weight:400;color:var(--accent);transition:transform var(--transition)}
.faq-list details[open] summary>b{transform:rotate(45deg)}
.faq-list details p{padding:0 55px 35px 50px;line-height:2.1;color:var(--text-body);font-size:.98rem}
.faq-aside{padding:29px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--canvas-raised)}
.faq-aside h2{font-size:1.32rem;margin-bottom:16px}
.faq-aside p{font-size:.87rem;color:var(--text-muted);line-height:1.9;margin-bottom:25px}
.faq-aside a{display:block;border-top:1px solid var(--line);font-size:.85rem;font-weight:700;padding:16px 0}
.about-page{padding-bottom:150px}
.about-body{display:grid;grid-template-columns:1fr 1fr;gap:8%;padding-top:22px}
.about-body h1{font-size:clamp(2.6rem,4.9vw,5rem);line-height:1.23}
.about-content{padding-top:14px}
.about-content>p:first-child{font-size:1.2rem;color:var(--text);line-height:2.05;margin-bottom:65px}
.about-content h2{font-size:1.5rem;margin:43px 0 15px}
.about-content p{font-size:1rem;line-height:2.2;color:var(--text-body)}
.about-content .button{margin-top:25px}
.notfound{min-height:60vh;padding:80px 0 160px}
.notfound h1{font-size:clamp(2.8rem,5.4vw,5rem);max-width:800px}
.notfound p{font-size:1.09rem;color:var(--text-muted);margin:25px 0 40px}
[hidden]{display:none!important}
/* Interactive and keyboard affordances */
@media (hover:hover){.index-row:hover .index-arrow{color:var(--accent);border-color:var(--accent)}.guide-tail-links a:hover{padding-left:7px}.editorial-links a:hover{padding-left:8px}.toc a:hover{text-decoration:underline;text-underline-offset:4px}}
/* Larger desktop reading widths and graceful space distribution */
@media (min-width:1400px){.hero{min-height:750px}.hero-visual{height:490px}.visual-frame{width:480px}.featured-section{padding-top:115px}.article-layout{grid-template-columns:minmax(0,775px) 280px;justify-content:space-between}.article-main{max-width:775px}.hero-lead{max-width:595px}}
@media (max-width:1190px){.shell{width:min(calc(100% - 64px),var(--width))}.hero{gap:28px;min-height:620px}.hero h1{font-size:clamp(3rem,6vw,5.3rem)}.hero-visual{height:390px}.tag-b{left:-5px}.tag-a{right:-5px}.visual-top,.visual-bottom{left:40px;right:40px}.topic-group{gap:42px}.article-layout{grid-template-columns:minmax(0,1fr) 250px;gap:42px}.wide-band-inner{gap:44px}.related .topic-card{padding:22px}.related .topic-card h3{font-size:1.08rem}}
@media (max-width:980px){.hero{grid-template-columns:1fr;min-height:0;padding-top:82px;padding-bottom:110px;gap:12px}.hero h1{font-size:clamp(3.3rem,7.8vw,6.1rem)}.hero-lead{max-width:710px}.hero-visual{width:min(100%,580px);justify-self:center;height:450px;margin-top:28px}.tag-a{right:4px}.lead-strip{grid-template-columns:1fr 3fr}.wide-band-inner{grid-template-columns:1fr;gap:60px}.band-columns{grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.band-columns article{display:block;border-top:1px solid rgba(27,41,32,.20);padding-top:20px}.band-columns article h3{margin-top:12px}.band-columns article p{min-height:116px}.editorial{gap:5%;padding-block:105px}.editorial-art{min-height:320px}.art-core{width:135px;height:135px;font-size:1.28rem}.article-layout{grid-template-columns:minmax(0,1fr)}.article-side{position:static;grid-row:1}.toc{padding:22px}.toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 30px}.side-callout{display:none}.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related-grid .topic-card:nth-child(3){grid-column:1/-1;min-height:160px}.faq-layout{gap:30px;grid-template-columns:minmax(0,1fr) 240px}.guide-timeline>section{grid-template-columns:160px 1fr;gap:40px}}
@media (max-width:760px){.shell{width:min(calc(100% - 40px),var(--width))}.header-inner{min-height:77px}.wordmark-sign{width:42px;height:42px;font-size:1.4rem}.wordmark-text{font-size:1.06rem}.menu-toggle{display:flex}.main-nav{display:none;position:absolute;left:20px;right:20px;top:calc(100% + 8px);padding:15px 22px 20px;border-radius:16px;background:#25303a;border:1px solid var(--line-heavy);box-shadow:0 20px 60px rgba(0,0,0,.42);flex-direction:column;align-items:stretch;gap:0}.main-nav.is-open{display:flex}.main-nav a{padding:14px 6px;border-bottom:1px solid var(--line);font-size:1rem}.main-nav a:last-child{border-bottom:none}.menu-toggle[aria-expanded="true"]{border-color:var(--accent)}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-7px) rotate(-45deg)}.hero{padding-top:67px;padding-bottom:90px}.hero h1{font-size:clamp(2.95rem,9vw,5rem)}.hero-lead{margin-top:24px;font-size:1rem}.hero-actions{margin-top:27px}.hero-footnote{margin-top:33px}.hero-visual{height:400px}.visual-frame{width:min(90%,440px)}.lead-strip{grid-template-columns:1fr;gap:18px;padding:35px 0}.lead-strip h2{font-size:2rem}.featured-section{padding-top:65px;padding-bottom:85px}.section-top{align-items:start}.feature-grid{gap:12px}.topic-card{padding:26px;min-height:285px}.topic-card h3{font-size:1.27rem}.wide-band{padding:70px 0}.band-columns{grid-template-columns:1fr;gap:0}.band-columns article{display:grid;grid-template-columns:40px 1fr;min-height:0;padding:23px 0}.band-columns article p{min-height:0}.editorial{grid-template-columns:1fr;padding-block:90px;gap:40px}.editorial-art{min-height:340px;max-width:440px;width:100%;justify-self:center}.bottom-teaser{padding:65px 0 80px}.footer-grid{gap:50px;padding-block:55px}.topic-group{grid-template-columns:1fr;gap:24px;margin-top:75px}.group-intro{position:static}.group-intro p{margin:12px 0 0}.page-intro{padding-bottom:48px}.page-intro h1{font-size:clamp(2.35rem,8vw,4rem)}.filter-shell{margin-bottom:60px}.index-row{padding:22px 0}.article-head{margin-bottom:36px;padding-bottom:34px}.article-prose section{margin-bottom:22px;padding-bottom:35px}.article-prose p{line-height:2}.article-shell{padding-bottom:75px}.review-list{padding:28px}.guide-timeline>section{grid-template-columns:105px 1fr;gap:20px;padding:36px 0 49px}.guide-step{font-size:3.1rem}.guide-page .page-intro{padding-bottom:57px}.guide-tail{grid-template-columns:1fr;gap:22px;margin-top:65px}.faq-layout{grid-template-columns:1fr}.faq-aside{margin-top:20px}.about-body{grid-template-columns:1fr;gap:36px}.about-content>p:first-child{margin-bottom:35px}}
@media (max-width:520px){.shell{width:min(calc(100% - 34px),var(--width))}.hero{padding-top:45px;padding-bottom:60px}.hero h1{white-space:normal;font-size:clamp(2.6rem,10.9vw,3.7rem);line-height:1.16}.hero-lead{font-size:.94rem;line-height:1.9}.hero-actions{align-items:stretch}.hero-actions .button{width:100%;justify-content:space-between;padding-inline:20px}.hero-visual{height:305px;margin-top:13px}.visual-frame{width:85%;border-radius:20px}.visual-frame::before{inset:13px;border-radius:13px}.visual-top,.visual-bottom{left:26px;right:26px;font-size:.43rem}.visual-top{top:26px}.visual-bottom{bottom:24px}.visual-bars{left:26px;bottom:48px;height:17px;gap:5px}.visual-bars i{width:3px}.visual-play{width:52px;height:52px;font-size:1.45rem}.floating-tag{font-size:.57rem;padding:8px 11px}.tag-a{right:-2px;top:29px}.tag-b{bottom:26px;left:0}.side-label{font-size:.66rem}.lead-strip h2{font-size:1.74rem}.lead-strip p{font-size:.92rem}.section-top{flex-direction:column;gap:14px;margin-bottom:26px}.section-top h2{font-size:2rem}.feature-grid{grid-template-columns:1fr}.topic-card{min-height:238px}.topic-card h3{font-size:1.32rem}.topic-card p{margin-bottom:21px}.wide-band h2{font-size:2.35rem}.band-columns article h3{font-size:1.2rem}.editorial h2{font-size:2rem}.editorial-text>p{font-size:.96rem}.editorial-art{min-height:290px}.art-core{width:119px;height:119px;font-size:1.1rem}.bottom-teaser{flex-direction:column;align-items:start}.bottom-teaser .button{width:100%}.footer-grid{grid-template-columns:1fr;gap:20px}.footer-grid nav{justify-self:start;margin-top:10px}.footer-bottom{font-size:.71rem}.crumbs{margin:25px 0 40px}.page-intro h1{font-size:2.4rem}.page-intro p{font-size:.95rem;line-height:1.95}.filter-shell{padding:20px 18px}.filter-shell input{flex-basis:100%}.topic-group{margin-top:65px}.index-row h3{font-size:1.09rem}.index-row p{font-size:.8rem}.index-arrow{width:35px;height:35px;min-width:35px}.article-head h1{font-size:2.15rem}.article-head>p{font-size:.98rem}.article-meta{gap:8px 16px}.article-meta span+span::before{margin-right:15px}.toc ol{grid-template-columns:1fr}.article-prose h2{font-size:1.55rem}.article-prose p{font-size:.95rem}.closing-note{padding:25px}.review-list{padding:24px}.review-list h2{font-size:1.5rem}.related{margin-top:85px}.related-grid{grid-template-columns:1fr}.related-grid .topic-card:nth-child(3){grid-column:auto}.guide-timeline>section{grid-template-columns:1fr;gap:22px}.guide-step{display:flex;align-items:center;gap:17px;font-size:2.5rem}.guide-step span{display:inline-block;margin:0;font-size:.72rem}.guide-timeline h2{font-size:1.65rem}.guide-timeline p{font-size:.94rem}.guide-tail h2{font-size:1.87rem}.faq-list summary{font-size:.97rem;gap:13px}.faq-list details p{padding:0 10px 23px 31px;font-size:.91rem}.about-body h1{font-size:2.65rem}.notfound{padding:70px 0 130px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
@media print{ :root{--canvas:#fff;--text:#111;--text-body:#242424;--text-muted:#444;--line:#ddd;--accent:#376b25}.site-header,.site-footer,.article-side,.review-list,.hero-visual,.button,.menu-toggle,.filter-shell,.related,.editorial-art,.hero-actions{display:none!important}body{background:#fff;color:#111;font-size:11pt}.shell{width:100%;max-width:none}.article-layout,.hero,.topic-group,.guide-timeline>section{display:block}.article-prose section{break-inside:avoid}.article-prose p{line-height:1.65;color:#222}.article-head h1{font-size:24pt}.article-prose h2{font-size:16pt}.article-head,.article-prose section{padding-bottom:14pt;margin-bottom:14pt}.page-intro{padding-bottom:25pt}a{text-decoration:underline}}