:root{color-scheme:light;--bg:#f6f5ef;--surface:#fffefa;--surface-2:#eeeee6;--ink:#183034;--muted:#667579;--line:#dfe2d9;--accent:#205760;--accent-hover:#123f47;--gold:#b88b57;--hero:#e4e9de;--shadow:0 20px 60px rgba(30,62,58,.07);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans CJK SC","Microsoft YaHei",sans-serif;font-synthesis:none}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#10191b;--surface:#182426;--surface-2:#1d2c2d;--ink:#e8ede5;--muted:#a8b5b0;--line:#314144;--accent:#a9d3cb;--accent-hover:#c5e2dc;--gold:#d9aa72;--hero:#203438;--shadow:0 20px 60px rgba(0,0,0,.18)}}
:root[data-theme=dark]{color-scheme:dark;--bg:#10191b;--surface:#182426;--surface-2:#1d2c2d;--ink:#e8ede5;--muted:#a8b5b0;--line:#314144;--accent:#a9d3cb;--accent-hover:#c5e2dc;--gold:#d9aa72;--hero:#203438;--shadow:0 20px 60px rgba(0,0,0,.18)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65}button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}svg{flex:none}::selection{background:#c2d8d0;color:#17353a}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;top:-50px;left:16px;background:var(--ink);color:var(--bg);padding:8px 14px;z-index:10}.skip-link:focus{top:12px}.site-shell{max-width:1440px;margin:auto;padding:0 clamp(20px,5vw,80px)}.site-header{height:90px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:40px}.brand{display:inline-flex;align-items:center;gap:11px;font-size:21px;font-weight:750;letter-spacing:-.055em;white-space:nowrap}.brand-mark{height:34px;width:34px;display:grid;place-items:center;border-radius:9px;background:var(--ink);color:var(--bg);font-size:23px;letter-spacing:-.09em;line-height:1}.brand-mark span,.footer-brand span{color:var(--gold)}.site-nav{display:flex;gap:36px;margin:auto;font-size:14px;font-weight:600;color:var(--muted)}.site-nav a{padding:8px 0;position:relative}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--ink)}.site-nav a[aria-current=page]:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--gold)}.header-actions{display:flex;gap:7px}.icon-button{border:1px solid var(--line);background:transparent;color:var(--ink);height:38px;width:38px;border-radius:50%;display:grid;place-items:center}.icon-button:hover{background:var(--surface-2)}.theme-icon-moon{display:none}.menu-toggle{display:none}:root[data-theme=dark] .theme-toggle>svg,:root:not([data-theme=light]) .theme-toggle>svg{display:none}:root[data-theme=dark] .theme-icon-moon{display:block}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-icon-moon{display:block}}:root[data-theme=light] .theme-toggle>svg{display:block}:root[data-theme=light] .theme-icon-moon{display:none}
.hero{min-height:590px;display:grid;grid-template-columns:1.08fr .92fr;overflow:hidden;background:var(--hero);border-radius:0 0 22px 22px;position:relative}.hero-copy{padding:clamp(55px,7vw,100px) 20px 35px clamp(32px,6vw,90px);position:relative;z-index:1;display:flex;flex-direction:column}.eyebrow,.overline{font-size:11px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--accent)}.eyebrow{display:flex;align-items:center;gap:10px}.eyebrow-line{width:23px;height:1px;background:var(--accent)}.hero h1{font-size:clamp(38px,4.3vw,68px);letter-spacing:-.07em;line-height:1.18;margin:34px 0 24px;font-weight:740}.hero h1 em{font-style:normal;color:var(--accent)}.hero-copy>p{max-width:540px;color:var(--muted);font-size:16px;line-height:1.9;margin:0}.hero-actions{display:flex;align-items:center;gap:28px;margin-top:35px}.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;border:0;border-radius:8px;padding:12px 21px;font-size:13px;font-weight:750;transition:background .2s,transform .2s}.button:hover{transform:translateY(-2px)}.button-primary{background:#183e44;color:#fff}.button-primary:hover{background:#295d64}.button-text{padding-left:0;color:var(--ink)}.button-soft{background:var(--surface-2);color:var(--ink)}.button-plain{background:transparent;color:var(--muted)}.hero-foot{display:flex;gap:25px;margin-top:auto;padding-top:50px;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.08em}.hero-art{position:relative;min-height:540px;background:radial-gradient(circle at 50% 50%,rgba(236,238,217,.9),transparent 55%)}.art-orbit{position:absolute;border:1px solid rgba(60,104,96,.19);border-radius:50%;width:560px;height:560px;top:40px;left:4%}.art-orbit-two{width:370px;height:370px;top:134px;left:19%}.art-page{position:absolute;width:250px;height:340px;border-radius:8px;box-shadow:20px 30px 65px rgba(35,64,53,.16)}.art-page-back{background:#bbccbe;transform:rotate(13deg);left:35%;top:143px;padding:35px}.art-page-back span{display:block;height:2px;background:#769788;margin:25px 0}.art-page-front{background:#f9f9ef;transform:rotate(-9deg);left:24%;top:125px;padding:32px;color:#183e44;display:flex;flex-direction:column}.art-page-kicker{font-size:9px;letter-spacing:.2em;font-weight:800}.art-page-front strong{font-size:28px;line-height:1.45;letter-spacing:-.06em;margin-top:63px}.art-page-front i{height:30px;width:30px;background:#c99b65;border-radius:50%;margin-top:22px}.art-page-lines{height:36px;border-top:1px solid #c9d1c3;border-bottom:1px solid #c9d1c3;margin-top:auto}.art-stamp{position:absolute;right:14%;bottom:95px;transform:rotate(9deg);font-size:10px;letter-spacing:.18em;font-weight:800;color:#4d726d}
.section{padding:90px 0 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:26px}.section-heading h2{font-size:clamp(26px,2.6vw,36px);letter-spacing:-.06em;line-height:1.25;margin:13px 0 8px}.section-heading p{color:var(--muted);margin:0;font-size:14px}.text-link{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-size:13px;font-weight:750;white-space:nowrap}.text-link:hover{gap:15px}.featured-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:18px}.article-card{background:var(--surface);border:1px solid var(--line);border-radius:13px;padding:27px;min-height:260px;display:flex;flex-direction:column;transition:transform .2s,border-color .2s,box-shadow .2s}.article-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow)}.article-card--featured{background:#17464d;border-color:#17464d;color:#fff}.card-top{display:flex;justify-content:space-between;align-items:center}.category-label{font-size:10px;font-weight:850;letter-spacing:.1em;color:var(--accent);text-transform:uppercase}.article-card--featured .category-label{color:#b7d8c9}.card-arrow{display:flex;color:var(--gold)}.article-card h3{font-size:21px;letter-spacing:-.05em;line-height:1.35;margin:30px 0 12px}.article-card--featured h3{font-size:28px}.article-card p{font-size:13px;color:var(--muted);margin:0 0 32px;line-height:1.75}.article-card--featured p{color:#c6d8d5}.article-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;margin-top:auto}.article-card--featured .article-meta{color:#acc9c3}.category-section{padding-top:96px}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category-card{border-top:1px solid var(--line);padding:22px 20px 25px 0;display:flex;flex-direction:column;gap:20px;min-height:160px}.category-card:hover{color:var(--accent)}.category-card .category-index{font-size:11px;color:var(--gold);font-weight:750}.category-card strong{font-size:22px;letter-spacing:-.04em}.category-card>span:last-child{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding-bottom:115px}.recent-list>a{display:flex;align-items:center;justify-content:space-between;padding:20px 0;border-bottom:1px solid var(--line);gap:15px}.recent-list>a:hover{color:var(--accent)}.recent-list small{display:block;color:var(--muted);font-size:11px;margin-bottom:4px}.recent-list strong{font-size:16px;letter-spacing:-.02em}.tool-list{display:grid;gap:12px}.tool-card{display:flex;align-items:center;gap:17px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:21px;transition:border-color .2s,transform .2s}.tool-card:hover{border-color:var(--accent);transform:translateY(-2px)}.tool-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:11px;background:var(--surface-2);color:var(--accent)}.tool-card strong,.tool-card small{display:block}.tool-card strong{font-size:14px}.tool-card small{font-size:12px;color:var(--muted);margin-top:3px}.tool-card .card-arrow{margin-left:auto}.privacy-note{display:flex;gap:9px;align-items:center;font-size:11px;color:var(--muted);margin:17px 0 0}
.site-footer{border-top:1px solid var(--line);padding:52px 0 25px;display:grid;grid-template-columns:1fr 1fr;gap:30px}.footer-brand{font-size:25px;font-weight:800;letter-spacing:-.06em}.site-footer p{color:var(--muted);font-size:12px}.footer-links{display:flex;gap:28px;align-items:start;justify-content:end;font-size:12px;color:var(--muted)}.footer-links a:hover{color:var(--ink)}.footer-bottom{grid-column:1/-1;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:11px}
.page-intro{padding:80px 0 56px;max-width:850px}.page-intro h1,.tool-page h1{font-size:clamp(38px,5vw,64px);line-height:1.2;letter-spacing:-.07em;margin:20px 0}.title-dot{color:var(--gold)}.page-intro p,.tool-page>p{font-size:16px;color:var(--muted);margin:0;line-height:1.9}.archive-controls{display:flex;flex-direction:column;gap:26px;border-top:1px solid var(--line);padding-top:30px}.search-field{width:min(100%,550px);display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);padding:0 17px;border-radius:9px;color:var(--muted)}.search-field:focus-within{border-color:var(--accent)}.search-field input{background:none;border:0;outline:none;color:var(--ink);height:48px;width:100%;font-size:14px}.filter-group{display:flex;gap:10px;flex-wrap:wrap}.filter{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:40px;padding:9px 16px;font-size:12px;font-weight:700}.filter span{opacity:.7;margin-left:5px}.filter:hover,.filter.active{background:var(--ink);color:var(--bg);border-color:var(--ink)}.results-count{color:var(--muted);font-size:12px;margin:32px 0 15px}.archive-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:110px}.search-item[hidden]{display:none}.archive-grid .article-card{height:100%}.empty-state{padding:50px;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-bottom:100px}.breadcrumb{display:flex;gap:11px;align-items:center;color:var(--muted);font-size:11px;padding-top:35px}.breadcrumb a:hover{color:var(--accent)}.article-layout{padding-top:56px}.article-header{max-width:820px;margin:0 auto 70px;text-align:center}.article-header h1{font-size:clamp(36px,5vw,60px);letter-spacing:-.07em;line-height:1.2;margin:21px 0}.article-header>p{font-size:17px;color:var(--muted);line-height:1.8}.article-header .article-meta{justify-content:center;margin-top:25px}.article-body-layout{display:grid;grid-template-columns:minmax(0,760px) 220px;gap:80px;justify-content:center;align-items:start}.prose{font-size:15px;line-height:2;color:var(--ink);padding-bottom:55px;min-width:0}.prose h2,.prose h3{line-height:1.45;letter-spacing:-.045em;scroll-margin-top:35px}.prose h2{font-size:28px;margin:50px 0 18px;padding-top:10px;border-top:1px solid var(--line)}.prose h3{font-size:20px;margin:35px 0 15px}.heading-anchor{font-size:.65em;opacity:0;margin-left:10px;color:var(--gold)}.prose h2:hover .heading-anchor,.prose h3:hover .heading-anchor{opacity:1}.prose p,.prose ul,.prose ol{margin:0 0 22px}.prose li{margin:7px 0;padding-left:4px}.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.prose blockquote{border-left:3px solid var(--gold);padding:4px 0 4px 22px;margin:28px 0;color:var(--muted);font-size:16px}.prose blockquote p{margin:0}.prose :not(pre)>code,.tool-hint code{background:var(--surface-2);padding:2px 5px;border-radius:4px;font-size:.85em}.prose pre{overflow:auto;margin:0;font-size:13px;line-height:1.7}.code-block{position:relative;background:#17272b;color:#e1ece5;border-radius:11px;padding:38px 20px 20px;margin:26px 0;overflow:auto}.code-lang{position:absolute;top:12px;right:17px;font-size:10px;color:#a9c6bf;text-transform:uppercase;letter-spacing:.1em}.hljs-keyword,.hljs-selector-tag,.hljs-literal{color:#b7d4fa}.hljs-string,.hljs-attr{color:#e7c88e}.hljs-number,.hljs-built_in{color:#deaaac}.hljs-comment{color:#8ea8a6;font-style:italic}.hljs-title,.hljs-function{color:#a9d9c2}.toc{position:sticky;top:35px;border-left:1px solid var(--line);padding-left:20px;display:flex;flex-direction:column;gap:12px;font-size:12px}.toc>span{font-weight:800;margin-bottom:7px}.toc a{color:var(--muted)}.toc a:hover{color:var(--accent)}.toc-depth-3{padding-left:12px}.related-section{padding:50px 0 110px;border-top:1px solid var(--line)}.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.tools-index{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding:0 0 130px}.tools-index .tool-card{padding:35px;min-height:150px}.tools-index .tool-icon{width:60px;height:60px}.tool-page{max-width:900px;margin:auto;padding:65px 0 120px}.tool-panel{margin-top:42px;background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:30px;box-shadow:var(--shadow)}.tool-panel>label,.color-fields label{display:block;font-size:12px;font-weight:800;margin:0 0 10px}.tool-panel textarea,.color-fields input{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;outline:none}.tool-panel textarea:focus,.color-fields input:focus{border-color:var(--accent)}.tool-panel textarea{min-height:180px;resize:vertical;padding:16px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.7}.tool-panel #json-output{min-height:230px}.tool-actions{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}.tool-status{font-size:12px;color:var(--muted);margin:10px 0 24px;min-height:20px}.tool-status[data-state=success]{color:#2c846a}.tool-status[data-state=error]{color:#ba5a46}.color-fields{display:grid;grid-template-columns:1fr 1fr;gap:20px}.color-fields input{display:block;padding:12px 14px;margin-top:8px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.color-preview{height:250px;border-radius:10px;background:var(--preview-color);color:#fff;display:flex;flex-direction:column;justify-content:space-between;padding:25px;margin:26px 0 0}.color-preview span{font-size:12px}.color-preview strong{font-size:30px;letter-spacing:-.04em}.tool-hint{color:var(--muted);font-size:12px}.about-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:10%;padding:15px 0 130px}.about-quote{background:var(--hero);border-radius:14px;padding:45px;font-size:clamp(24px,2.8vw,35px);font-weight:650;line-height:1.6;letter-spacing:-.05em;align-self:start}.about-quote span{display:block;font-size:10px;letter-spacing:.18em;color:var(--accent);margin-top:55px}.about-copy{font-size:15px;line-height:2;color:var(--muted)}.about-copy h2{color:var(--ink);font-size:23px;letter-spacing:-.04em;margin:0 0 16px}.about-copy h2:not(:first-child){margin-top:38px}.about-copy p{margin:0 0 20px}.about-copy li{margin:9px 0}.about-copy .button{margin-top:15px}.not-found{text-align:center;padding:130px 0 160px}.not-found>strong{display:block;font-size:clamp(100px,16vw,180px);line-height:1.1;letter-spacing:-.1em}.not-found>strong span{color:var(--gold)}.not-found h1{font-size:27px;letter-spacing:-.04em}.not-found p{color:var(--muted);margin-bottom:30px}
@media(max-width:1050px){.hero{grid-template-columns:1fr .7fr}.hero-art{transform:scale(.8);transform-origin:center}.featured-grid{grid-template-columns:repeat(2,1fr)}.featured-grid .article-card:first-child{grid-column:1/-1}.archive-grid{grid-template-columns:repeat(2,1fr)}.article-body-layout{grid-template-columns:minmax(0,750px)}.toc{display:none}.two-columns{gap:35px}}
.prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:26px 0;font-size:13px;line-height:1.65}.prose th,.prose td{border-bottom:1px solid var(--line);padding:11px 13px;text-align:left;min-width:110px}.prose th{background:var(--surface-2);font-weight:800}.prose tr:nth-child(even) td{background:var(--surface)}
@media(max-width:720px){.site-shell{padding:0 20px}.site-header{height:70px;gap:15px}.site-nav{display:none;position:absolute;z-index:5;top:69px;left:20px;right:20px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px;box-shadow:var(--shadow);flex-direction:column;gap:9px}.site-nav.open{display:flex}.menu-toggle{display:grid}.header-actions{margin-left:auto}.hero{grid-template-columns:1fr;border-radius:0 0 15px 15px}.hero-copy{padding:55px 28px 30px}.hero h1{font-size:clamp(36px,9vw,52px)}.hero-copy>p{font-size:14px}.hero-foot{gap:10px;flex-wrap:wrap}.hero-art{height:310px;min-height:310px;transform:none;overflow:hidden}.art-orbit{width:440px;height:440px;top:-40px;left:calc(50% - 220px)}.art-orbit-two{width:280px;height:280px;top:43px;left:calc(50% - 140px)}.art-page{transform:scale(.7) rotate(-9deg);transform-origin:top left;top:35px;left:calc(50% - 90px)}.art-page-back{transform:scale(.7) rotate(12deg);left:calc(50% - 50px);top:50px}.art-stamp{right:5%;bottom:35px}.section{padding-top:70px}.section-heading{align-items:start;flex-direction:column}.featured-grid,.category-grid,.two-columns,.archive-grid,.tools-index,.related-grid,.about-layout{grid-template-columns:1fr}.featured-grid .article-card:first-child{grid-column:auto}.article-card{min-height:220px}.category-card{min-height:125px}.two-columns{gap:65px;padding-bottom:90px}.site-footer{grid-template-columns:1fr}.footer-links{justify-content:start;flex-wrap:wrap}.page-intro{padding:60px 0 40px}.article-header{margin-bottom:50px}.article-layout{padding-top:40px}.article-header h1{font-size:37px}.prose{font-size:14px}.prose h2{font-size:24px}.related-section{padding-bottom:80px}.tools-index{padding-bottom:90px}.tool-page{padding-top:50px;padding-bottom:90px}.tool-panel{padding:20px}.color-fields{grid-template-columns:1fr}.about-layout{gap:35px;padding-bottom:90px}.about-quote{padding:30px}.not-found{padding:100px 0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
@media(prefers-color-scheme:light){:root:not([data-theme]) .theme-toggle>svg{display:block}}
@media(max-width:720px){.hero-actions{flex-wrap:wrap;gap:12px}.hero-actions .button{flex:none;white-space:nowrap}.hero-actions .button-text{padding-right:0}}