/* Inherit the current Reset editorial system; no homepage re-positioning. */
@font-face{font-family:"Reset Sans";font-style:normal;font-weight:400;font-display:swap;src:url("NotoSansSC-400.ttf") format("truetype")}
@font-face{font-family:"Reset Sans";font-style:normal;font-weight:600;font-display:swap;src:url("NotoSansSC-600.ttf") format("truetype")}
@font-face{font-family:"Reset Sans";font-style:normal;font-weight:700;font-display:swap;src:url("NotoSansSC-700.ttf") format("truetype")}
@font-face{font-family:"Full Sans";font-style:normal;font-weight:400 700;font-display:swap;src:url("full-sans.woff2") format("woff2")}
:root{--xq-paper:#fdf5e4;--xq-surface:#fdf8ef;--xq-ink:#171714;--xq-muted:#6e6962;--xq-orange:#fd8605;--xq-deep:#9a4e00;--xq-line:#d5cfc6;--xq-font:"Reset Sans","Full Sans","PingFang SC","Microsoft YaHei",sans-serif;--xq-radius:6px;--xq-content:1000px;--xq-focus:3px solid var(--xq-ink);--font-interface:var(--xq-font);--font-reading:var(--xq-font);--text-primary:var(--xq-ink);--text-muted:var(--xq-muted);--surface-default:var(--xq-paper);--surface-subtle:var(--xq-surface);--border-default:var(--xq-line);--action-text:var(--xq-deep);--focus-ring:var(--xq-ink);--brand-cream-field:#ffebc8;--border:1px solid var(--xq-line);color:var(--xq-ink);background:var(--xq-paper);font-family:var(--xq-font);scrollbar-color:var(--xq-muted) var(--xq-paper);caret-color:var(--xq-deep)}
body{background:var(--xq-paper);color:var(--xq-ink);font-family:var(--xq-font);-webkit-font-smoothing:antialiased}*{box-sizing:border-box}::selection{background:#ffd494;color:var(--xq-ink)}html{scroll-padding-top:24px}a{text-underline-offset:4px}a:hover{color:var(--xq-deep)}button,input{font:inherit}button{cursor:pointer}[hidden]{display:none!important}:focus-visible{outline:var(--xq-focus);outline-offset:4px}.xq-shell,.library-home .shell,.original-page .shell{width:min(var(--xq-content),calc(100% - 48px));margin-inline:auto}.xq-header{padding:25px 0 0;border-bottom:1px solid var(--xq-ink)}.xq-brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px}.xq-brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;min-width:0;color:var(--xq-ink)}.xq-brand img{display:block;width:34px;height:34px;border:1px solid var(--xq-ink);border-radius:50%;object-fit:contain;background:var(--xq-surface)}.xq-brand span{font-size:24px;line-height:1.3;font-weight:700;letter-spacing:0}.xq-utilities{display:flex;align-items:center;gap:22px;flex-shrink:0;font-size:13px}.xq-utilities a{text-decoration:none;min-height:44px;display:flex;align-items:center;gap:5px}.xq-utilities button{padding:8px 12px;min-height:38px;border:1px solid var(--xq-line);border-radius:4px;background:transparent;color:var(--xq-ink);font-size:13px}.xq-utilities button:hover{border-color:var(--xq-ink);background:var(--xq-surface)}.xq-nav{display:flex;gap:32px;padding-top:12px}.xq-nav a{display:flex;align-items:center;min-height:45px;border-bottom:3px solid transparent;text-decoration:none;font-size:14px;color:var(--xq-muted);margin-bottom:-1px}.xq-nav a:hover,.xq-nav a[aria-current]{color:var(--xq-ink)}.xq-nav a[aria-current]{border-bottom-color:var(--xq-orange);font-weight:700}.xq-footer{display:flex;justify-content:space-between;gap:16px;padding:22px 0 32px;border-top:1px solid var(--xq-line);font-size:12px;color:var(--xq-muted)}.xq-footer a{color:var(--xq-ink)}
/* Tutorial: keep actual screenshots and steps, remove floating-card styling. */
.xq-guide{--bg:var(--xq-paper);--card:var(--xq-surface);--ink:var(--xq-ink);--muted:var(--xq-muted);--line:var(--xq-line);--brand:var(--xq-orange);--brand2:#e57800;--warn:#fff3c8;--warn-border:#d8c288;--shadow:none;line-height:1.8}.xq-guide-layout{display:grid;grid-template-columns:minmax(0,736px) 208px;gap:56px;align-items:start}.xq-guide .wrap{width:100%;padding:0 0 36px;min-width:0}.xq-guide .hero{padding:38px 0 32px;text-align:left;border-bottom:1px solid var(--xq-line)}.xq-guide .hero .badge{display:none}.xq-guide .hero h1{font-family:var(--xq-font);font-size:42px;line-height:1.25;letter-spacing:0;margin:0 0 16px;font-weight:700;text-wrap:balance}.xq-guide .hero p{font-size:15px;line-height:1.85;max-width:48em}.xq-guide .actions{justify-content:flex-start;margin-top:22px;gap:12px}.xq-guide .btn{border-radius:4px;background:transparent;font-size:14px;font-weight:600;min-height:44px;padding:9px 17px;line-height:1.5;border:1px solid var(--xq-ink);box-shadow:none;color:var(--xq-ink)}.xq-guide .btn.primary{background:var(--xq-orange);border-color:var(--xq-orange);color:var(--xq-ink)}.xq-guide .btn:hover{background:#ffebc8}.xq-guide .btn.primary:hover{background:#ed7c00}.xq-guide .card{padding:28px 0;margin:0;border:0;border-bottom:1px solid var(--xq-line);border-radius:0;box-shadow:none;background:transparent}.xq-guide .card h2{font-size:24px;line-height:1.5;font-weight:700;margin:0 0 20px}.xq-guide .card h3{font-size:19px;font-weight:700;line-height:1.6}.xq-guide .note,.xq-guide .phone-tip{background:var(--xq-surface);border:1px solid var(--xq-line);border-radius:4px;padding:17px 20px;color:var(--xq-ink);font-size:15px;font-weight:400}.xq-guide .note strong,.xq-guide .phone-tip strong{color:var(--xq-deep)}.xq-guide .step{padding-left:48px;margin-top:32px}.xq-guide .step:before{background:var(--xq-orange);color:var(--xq-ink);border-radius:4px;width:30px;height:30px;line-height:1}.xq-guide .step h3{padding-top:0;margin-top:0}.xq-guide .step p{font-size:16px}.xq-guide .shot,.xq-guide video{border:1px solid var(--xq-line);border-radius:4px;max-width:100%}.xq-guide .caption{font-size:12px!important}.xq-guide .tips{gap:0}.xq-guide .tip{padding:15px 0;border:0;border-bottom:1px solid var(--xq-line);background:transparent;border-radius:0;font-size:15px}.xq-guide .tip:last-child{border-bottom:0}.xq-guide .related-links{gap:12px}.xq-guide .related-links a{border-radius:4px;background:var(--xq-surface);border:1px solid var(--xq-line);color:var(--xq-ink);font-size:14px;font-weight:600}.xq-guide .related-links a:hover{border-color:var(--xq-ink)}.xq-guide .footer{font-size:12px;color:var(--xq-muted);text-align:left;margin-top:24px}.xq-guide-aside{position:sticky;top:24px;padding-top:42px;font-size:13px}.xq-guide-aside h2{font-size:13px;color:var(--xq-muted);font-weight:400;margin:0 0 12px}.xq-guide-aside a{display:block;min-height:40px;padding:8px 0;text-decoration:none;color:var(--xq-ink);line-height:1.8}.xq-guide-family{margin-top:24px;padding-top:20px;border-top:1px solid var(--xq-line)}.xq-guide-family a[aria-current]{color:var(--xq-deep);font-weight:700}.xq-guide .ad-bar{position:static!important;inset:auto!important;transform:none!important;width:100%!important;height:auto!important;display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px;margin:28px 0 0;z-index:auto}.xq-guide .ad-slot{position:static!important;inset:auto!important;height:auto!important;width:auto;min-height:76px;padding:12px 0;background:transparent;border:0;border-bottom:1px solid var(--xq-line);border-radius:0;box-shadow:none;text-decoration:none;gap:10px;transform:none}.xq-guide .ad-avatar,.xq-guide .ad-reset-avatar{width:30px;height:30px;box-shadow:none}.xq-guide .ad-title{font-size:13px;color:var(--xq-ink)}.xq-guide .ad-description{font-size:11px;color:var(--xq-muted)}.xq-guide .ad-plus{width:30px;height:30px;font-size:22px;border-radius:4px;background:var(--xq-orange);color:var(--xq-ink)}.xq-guide .ad-dialog{border-radius:6px;background:var(--xq-surface);border:1px solid var(--xq-ink)}
/* Library index: intact title/search/topics; same editorial rhythm as Reset. */
.library-home{--control-radius:4px;--sidebar-width:184px}.library-home .library-intro{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;padding:38px 0 36px}.library-home .library-intro h1{font-size:40px;font-weight:700;line-height:1.35;max-width:850px;letter-spacing:0;text-wrap:balance}.library-home .library-intro p{font-family:var(--xq-font);font-size:15px;color:var(--xq-muted);margin-top:14px;line-height:1.8}.library-home .library-search{max-width:100%;width:100%}.library-home .search-field{border:1px solid var(--xq-ink);border-radius:4px;background:var(--xq-surface);min-height:52px;padding-inline:16px}.library-home .search-field input{font-size:15px}.library-home .library-layout{gap:48px}.library-home .library-sidebar{top:24px}.library-home .topic-navigation{gap:4px}.library-home .topic-navigation a{font-size:14px;border-radius:4px;padding:10px 12px;min-height:44px}.library-home .topic-navigation a[aria-current="true"]{background:#ffebc8;color:var(--xq-ink);font-weight:700}.library-home .topic-navigation a[aria-current="true"]:before{background:var(--xq-orange)}.library-home .results-heading{border-bottom:1px solid var(--xq-ink);padding-bottom:16px}.library-home .results-heading h2{font-size:24px;font-weight:700}.library-home .results-heading p{font-size:12px}.library-home .chapter{padding-top:22px}.library-home .chapter h3{font-size:14px;font-weight:700}.library-home .chapter-intro p{font-size:11px}.library-home .article-row a{min-height:62px;font-size:17px;line-height:1.8;padding:16px 0;font-weight:400}.library-home .article-row a>span:first-child{font-family:var(--xq-font)}.library-home .article-row a:hover>span:first-child{color:var(--xq-deep)}.library-home .site-footer{display:none}
/* Readers: only typography/surfaces, never touch article markup or chart data. */
.original-page .reading-layout{grid-template-columns:184px minmax(0,1fr);gap:48px;padding-top:32px}.original-page .reading-main{min-width:0}.original-page .original-prose{font-family:var(--xq-font);font-size:17px;line-height:1.95}.original-page .original-prose>h1{font-size:34px;line-height:1.5;font-weight:700;margin-bottom:26px;letter-spacing:0}.original-page .original-prose h2{font-size:25px;font-weight:700}.original-page .original-prose h3{font-size:21px;font-weight:600}.original-page .original-prose strong{font-weight:600}.original-page .original-prose figure{margin:26px 0}.original-page .original-prose>h1,.original-page .original-prose h2,.original-page .original-prose h3{font-family:var(--xq-font)}.original-page .reading-sidebar{font-family:var(--xq-font);font-size:13px;top:24px}.original-page .reading-sidebar a{font-size:13px}.original-page .article-topic{font-size:13px}.original-page .quiet-button{border-radius:4px;background:var(--xq-surface)}.original-page .article-ad-rail{display:none!important}.original-page .site-footer{display:none}
.xq-follow-dialog{width:440px;max-width:calc(100% - 32px);max-height:calc(100dvh - 32px);padding:30px 24px 20px;border:1px solid var(--xq-ink);border-radius:6px;background:var(--xq-surface);color:var(--xq-ink);text-align:center;font-family:var(--xq-font);box-shadow:0 18px 48px #17171433}.xq-follow-dialog::backdrop{background:#17171466}.xq-follow-dialog h2{font-family:var(--xq-font);font-size:25px;font-weight:700;margin:10px 0 6px}.xq-follow-dialog p{font-size:13px;color:var(--xq-muted);margin:8px 0;line-height:1.8}.xq-follow-dialog>img{width:220px;height:220px;max-width:100%;object-fit:contain;display:block;margin:16px auto}.xq-close{position:absolute;right:6px;top:6px;width:40px;height:40px;border:0;background:transparent;color:var(--xq-ink);font-size:25px}.xq-dialog-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:18px;font-size:13px}.xq-dialog-actions button,.xq-dialog-actions a{min-height:44px;border:1px solid var(--xq-ink);border-radius:4px;padding:10px 12px;background:transparent;color:var(--xq-ink);text-decoration:none}.xq-dialog-actions button{background:var(--xq-orange);border-color:var(--xq-orange)}.xq-follow-dialog .xq-copy-status{min-height:24px;color:var(--xq-deep)}.xq-subscribe-note{padding-top:12px;border-top:1px solid var(--xq-line)}
@media(max-width:1000px){.xq-guide-layout{grid-template-columns:minmax(0,1fr) 180px;gap:32px}.xq-guide .hero h1{font-size:36px}.original-page .reading-layout{display:block}.original-page .reading-sidebar{padding-bottom:20px;border-bottom:1px solid var(--xq-line);margin-bottom:28px}.original-page .reading-navigation-body{max-height:400px;overflow:auto}.original-page .original-prose{max-width:760px;margin-inline:auto}}
@media(max-width:760px){.xq-shell,.library-home .shell,.original-page .shell{width:calc(100% - 36px)}.xq-header{padding-top:18px}.xq-brand span{font-size:21px}.xq-utilities{gap:14px}.xq-nav{gap:27px;padding-top:10px}.xq-guide-layout{display:block}.xq-guide-aside{position:static;padding:0 0 28px}.xq-guide-aside>nav{display:none}.xq-guide-family{margin:0;padding-top:20px;display:flex;flex-wrap:wrap;gap:3px 20px}.xq-guide-family h2{width:100%;margin-bottom:2px}.xq-guide-family a{font-size:12px}.xq-guide .hero{padding:28px 0}.xq-guide .hero h1{font-size:34px}.xq-guide .wrap{padding-bottom:24px}.library-home .library-intro{padding:28px 0;gap:20px}.library-home .library-intro h1{font-size:32px;max-width:600px}.library-home .library-intro p{font-size:14px}.library-home .library-layout{grid-template-columns:minmax(0,1fr);gap:26px}.library-home .library-sidebar{position:static}.library-home .topic-navigation{display:flex;flex-wrap:wrap;gap:4px 6px}.library-home .topic-navigation a{padding:8px 11px;gap:10px;font-size:13px;min-height:44px;flex-shrink:0}.library-home .topic-navigation a[aria-current="true"]:before{display:none}.library-home .topic-count{font-size:10px}.library-home .library-sidebar h2{margin-bottom:8px}.library-home .results-heading h2{font-size:22px}.library-home .article-row a{font-size:16px}.original-page .reading-layout{padding-top:20px}.original-page .original-prose>h1{font-size:30px}.original-page .original-prose{font-size:16px;line-height:1.95}.original-page .original-prose h2{font-size:24px}.original-page .original-prose h3{font-size:20px}.xq-footer{font-size:11px;flex-wrap:wrap;gap:12px;padding-bottom:24px}}
@media(max-width:480px){.xq-brand-row{gap:10px;flex-wrap:wrap}.xq-brand{gap:9px}.xq-brand img{width:30px;height:30px}.xq-brand span{font-size:20px}.xq-utilities{margin-left:auto;gap:12px;font-size:12px}.xq-utilities button{padding:5px 8px;font-size:12px;min-height:36px}.xq-external{display:none}.xq-nav{justify-content:space-between;gap:12px;padding-top:8px}.xq-nav a{font-size:13px;min-height:44px}.xq-guide .hero h1{font-size:32px;line-height:1.4}.xq-guide .hero p{font-size:14px}.xq-guide .actions{gap:10px}.xq-guide .btn{width:auto;flex:0 1 auto;font-size:13px;padding:10px 12px}.xq-guide .card{padding:24px 0}.xq-guide .card h2{font-size:22px;margin-bottom:16px}.xq-guide .note,.xq-guide .phone-tip{padding:14px;font-size:14px}.xq-guide .step{padding-left:0;margin-top:26px}.xq-guide .step:before{position:static;display:inline-grid;width:28px;height:28px;margin-bottom:10px;font-size:14px}.xq-guide .step h3{font-size:18px}.xq-guide .step p{font-size:15px}.xq-guide .tip{font-size:14px}.xq-guide .related-links{grid-template-columns:1fr}.xq-guide .ad-bar{grid-template-columns:1fr!important}.xq-guide .ad-slot{min-height:64px}.library-home .library-intro h1{font-size:29px;line-height:1.5;text-wrap:initial}.library-home .library-intro p{font-size:13px}.library-home .search-field input{font-size:13px}.library-home .search-field{padding-inline:12px;gap:10px}.library-home .topic-navigation{gap:4px}.library-home .topic-navigation a{padding:7px 9px;font-size:12px;gap:8px}.library-home .article-row a{font-size:16px;gap:16px}.original-page .original-prose>h1{font-size:28px}.xq-follow-dialog{padding:28px 18px 18px}.xq-follow-dialog h2{font-size:22px}.xq-follow-dialog>img{width:190px;height:190px}}
@media print{.xq-header,.xq-footer,.xq-guide-aside,.xq-follow-dialog{display:none!important}body{background:white!important}.xq-guide-layout{display:block}.original-page .reading-layout{display:block}.xq-guide .ad-bar{display:none!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* V21 readability: retain paper/ink; deepen secondary copy and meaningful outlines. */
.reading-home,.inner-page{
 --xq-muted:#514b42;--text-muted:#514b42;--muted:#514b42;
 --xq-line:#b9ad98;--border-default:#b9ad98;--border:1px solid #b9ad98;
 --xq-control-line:#8b8070;--xq-table-line:#8d806d;
}
.reading-home .xq-utilities button,.inner-page .xq-utilities button{border-color:var(--xq-control-line)}
.reading-home .xq-footer,.inner-page .xq-footer{color:var(--xq-muted)}
.inner-page .reading-sidebar a,.inner-page .article-topic a{color:#454037}
.inner-page .reading-sidebar a:hover,.inner-page .article-topic a:hover{color:var(--xq-deep)}
.inner-page .reading-sidebar summary{color:var(--xq-ink)}
.inner-page .quiet-button{color:var(--xq-ink);border-color:var(--xq-control-line)}

/* V22: use one broad-coverage Source Han Sans face, not Reset's 153-glyph subset.
   Variable font axis is 400..700; body 450 adds modest stroke weight without synthetic bold. */
.reading-home,.inner-page{--xq-font:"Full Sans","PingFang SC","Microsoft YaHei",sans-serif;font-family:var(--xq-font)}
.inner-article .original-prose{font-weight:450}
.inner-article .original-prose :is(p,li,td){font-weight:450}
.inner-article .original-prose :is(strong,b){font-weight:600}
.inner-article .original-prose .wz-eyebrow{font-weight:500}
.reading-home .reading-entry{font-weight:450}