/* One width, type voice and header and footer for every public page. The home, guide and API stylesheets name their colours differently, so these fall back in order. */
:root{
  --frame:1920px;--pad:clamp(20px,3.4vw,64px);--hdr:64px;--line:#E4E4E8;--line2:#D4D4DA;
  --serif:"Instrument Serif","Iowan Old Style",Georgia,"Songti SC","Noto Serif CJK SC","Source Han Serif SC","Microsoft YaHei",serif;
  --sc-bg:var(--bg,#fff);--sc-ink2:var(--ink2,var(--muted,#5e5e66));--sc-soft:var(--soft,#f3f3f5);
  --sc-mark:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 15 8'%3E%3Ccircle cx='4' cy='4' r='3' fill='none' stroke='%23000' stroke-width='1.6'/%3E%3Cpath d='M7.4 4h7' stroke='%23000' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--line2:#3A3A40}}
:root[data-theme="dark"]{--line2:#3A3A40}

/* Small uppercase label, marked with the logo's ring and tail. */
.eyebrow,.sp-label,.h3-news-head h2,.om-stats dt{display:flex;align-items:center;gap:8px;margin:0;font:500 11.5px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--sc-ink2)}
.eyebrow::before,.sp-label::before,.h3-news-head h2::before,.om-stats dt::before{content:"";flex:none;width:15px;height:8px;background:currentColor;opacity:.6;-webkit-mask:var(--sc-mark) center/contain no-repeat;mask:var(--sc-mark) center/contain no-repeat}
.eyebrow{margin-bottom:16px}

.sc-nav{display:flex;align-items:center;gap:0}
.sc-nav > a,.sc-dd > summary{font-size:13.5px;font-weight:500;line-height:1.3;padding:8px 10px;border-radius:6px;color:var(--ink);text-decoration:none;white-space:nowrap;cursor:pointer}
.sc-nav > a:hover,.sc-dd > summary:hover,.sc-dd[open] > summary{background:none;color:var(--sc-ink2)}
.sc-dd{position:relative}
.sc-dd > summary{display:flex;align-items:center;gap:5px;list-style:none}
.sc-dd > summary::-webkit-details-marker{display:none}
.sc-dd > summary::after{content:"";width:5px;height:5px;margin-top:-3px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
.sc-dd-menu{position:absolute;top:calc(100% + 8px);left:0;z-index:40;display:grid;min-width:210px;padding:6px;background:var(--sc-bg);border:1px solid var(--line);border-radius:8px;box-shadow:0 18px 44px -18px rgba(13,13,15,.28)}
.sc-nav .sc-dd-menu a{display:block;padding:9px 12px;border-radius:4px;font-size:14px;font-weight:500;line-height:1.3;color:var(--ink);text-decoration:none;white-space:nowrap}
.sc-nav .sc-dd-menu a:hover{background:var(--sc-soft)}

.hdr,.sc-header{background:var(--sc-bg);border-bottom:1px solid var(--line);box-shadow:none}
.sc-header{position:sticky;top:0;z-index:30}
.hdr .hdr-in,.sc-header-in{display:flex;align-items:center;gap:6px;max-width:var(--frame);height:var(--hdr);margin:0 auto;padding:0 var(--pad)}
.hdr .brand,.sc-header .brand{margin-right:18px;font-size:19px;font-weight:600;letter-spacing:-.03em}
.hdr .brand svg,.sc-header .brand svg{width:20px;height:20px}
.sc-sp{flex:1}
.sc-lang{font-size:13.5px;font-weight:500;color:var(--sc-ink2);text-decoration:none;padding:8px 10px;white-space:nowrap}
.sc-lang:hover{color:var(--ink)}
.sc-pill{display:inline-flex;align-items:center;height:34px;padding:0 10px;border-radius:6px;font-size:13.5px;font-weight:500;text-decoration:none;white-space:nowrap;color:var(--sc-ink2)}
.sc-pill:hover{color:var(--ink)}
.sc-pill.sc-dark,.sc-pill.sc-dark:hover,.hdr-in .pill.dark{height:34px;padding:0 14px;border-radius:6px;background:var(--ink);color:var(--sc-bg);font-size:13.5px}
.hdr-in .pill.soft{height:34px;padding:0 10px;border-radius:6px;background:none;color:var(--sc-ink2);font-size:13.5px}
.hdr-in .pill.soft:hover{background:none;color:var(--ink)}
.sc-burger{display:none;position:relative}
.sc-burger > summary{display:grid;place-items:center;width:38px;height:38px;border-radius:6px;color:var(--ink);list-style:none;cursor:pointer}
.sc-burger > summary::-webkit-details-marker{display:none}
.sc-burger > summary:hover,.sc-burger[open] > summary{background:var(--sc-soft)}
.sc-burger svg{width:20px;height:20px}
.sc-burger-panel{position:absolute;top:calc(100% + 10px);right:0;z-index:40;display:grid;width:min(280px,calc(100vw - 32px));max-height:calc(100vh - 92px);overflow:auto;padding:6px;background:var(--sc-bg);border:1px solid var(--line);border-radius:8px;box-shadow:0 18px 44px -18px rgba(13,13,15,.28)}
.sc-burger-panel a{padding:10px 12px;border-radius:4px;font-size:15px;font-weight:500;line-height:1.3;color:var(--ink);text-decoration:none}
.sc-burger-panel a:hover{background:var(--sc-soft)}
@media(max-width:1099px){
  .sc-header .sc-nav,.sc-header .sc-login,.hdr .top-nav.sc-nav,.hdr .sc-login{display:none}
  .sc-burger{display:block}
}
@media(max-width:420px){.sc-header .sc-dark{display:none}}
@media(max-width:560px){.hdr-in:has(.sc-burger) > .pill{display:none}}
/* The homepage keeps its full-screen mobile menu, so its bar hides at the homepage breakpoint. */
@media(max-width:1099px){.hdr .nav.sc-nav{display:none}}

.sc-foot{margin-top:0;border-top:1px solid var(--line);background:var(--sc-bg);font-size:13.5px}
.sc-foot.foot{padding:0;max-width:none}
.sc-foot-in{max-width:var(--frame);margin:0 auto;padding:56px var(--pad) 32px}
.sc-fmain{display:grid;grid-template-columns:minmax(220px,1fr) minmax(0,2.1fr);gap:40px clamp(40px,6vw,88px)}
.sc-fbrand{min-width:0}
.sc-fbrand .brand{display:inline-flex;align-items:center;gap:8px;margin:0;font-size:19px;font-weight:600;letter-spacing:-.03em;color:var(--ink);text-decoration:none}
.sc-fbrand .brand svg{width:20px;height:20px}
.sc-fbrand p{margin:14px 0 0;max-width:30ch;font-size:14.5px;line-height:1.55;color:var(--sc-ink2)}
.sc-fbrand .sc-fsince{margin-top:22px;font-size:13px}
.sc-fsocial{display:flex;gap:14px;margin-top:12px}
.sc-fsocial a{display:grid;place-items:center;width:22px;height:22px;color:var(--sc-ink2)}
.sc-fsocial a:hover{color:var(--ink)}
.sc-fsocial svg{width:20px;height:20px}
.sc-fbrand .sc-fmail{display:inline-block;margin-top:16px;font-size:14px;color:var(--sc-ink2);text-decoration:none;overflow-wrap:anywhere}
.sc-fbrand .sc-fmail:hover{color:var(--ink)}
.sc-fcols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.sc-fcol{display:flex;flex-direction:column;gap:34px;min-width:0}
.sc-fgroup{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.sc-fgroup p{margin:0 0 6px;font-size:12.5px;font-weight:500;letter-spacing:.04em;color:var(--sc-ink2)}
.sc-fgroup a{font-size:14px;line-height:1.4;color:var(--ink);text-decoration:none}
.sc-fgroup a:hover{color:var(--sc-ink2)}
.sc-fbot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;margin-top:44px;padding-top:20px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.5;color:var(--sc-ink2)}
.sc-fbot p{flex:1 1 320px;max-width:64ch;margin:0}
.sc-fbot .sc-lang{padding:0}
@media(max-width:860px){.sc-fmain{grid-template-columns:minmax(0,1fr)}}
@media(max-width:680px){
  .sc-foot-in{padding-block:44px 28px}
  .sc-fcols{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 20px}
}

.sp-next{margin:56px calc(var(--pad) * -1) -72px;padding:48px var(--pad);border-top:1px solid var(--line);background:var(--sc-soft)}
.sp-next h2{margin:0 0 8px}
.sp-next p{margin:0;color:var(--sc-ink2)}
.sp-next .actions{margin-top:20px}