/* jerryyeh.com 样式：来自定稿的 Demo v5.2（operations/blog/demo/blog-demo-v5.html），配色 B。改版面先改 Demo 给 JY 看。 */
:root{--page:#fff;--panel:#f5f1e8;--blob:#ffd45c;--cta:#2f5bff;--ctaInk:#fff;--squig:#2f5bff;--acc:#2f5bff;--soft1:#fff3c9;--soft2:#e6ecff;--soft3:#e3f3e9;
  --ink:#17181c;--ink2:#3a3d45;--mut:#70737c;--line:#e8e3d8;--hl:#ffe27a;
  --serif:"Fraunces","Noto Serif SC","Songti SC","STSong",serif;--sans:"Inter",-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html,body{overflow-x:hidden}body{margin:0;background:var(--page);color:var(--ink);font:17px/1.75 var(--sans)}a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.panel{background:var(--panel);border-radius:44px;max-width:1240px;margin:16px auto 0;padding:26px 48px 0;position:relative}
header.site{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.logo{position:relative;font:800 34px/1 var(--serif);text-decoration:none;letter-spacing:-.01em;padding:4px 6px 10px}.logo svg{position:absolute;left:-6px;right:-10px;bottom:-4px;width:calc(100% + 16px);height:26px}
nav.main{display:flex;gap:22px;align-items:center;font-size:17px;flex-wrap:wrap}nav.main a{text-decoration:none;font-weight:500}nav.main a:hover{text-decoration:underline;text-underline-offset:5px}
nav.main .pill,.pill{background:var(--cta);color:var(--ctaInk);padding:12px 24px;border-radius:99px;font-weight:600;text-decoration:none;border:0;font:600 16px var(--sans);cursor:pointer;display:inline-block}.pill:hover{filter:brightness(1.05);text-decoration:none}
nav.main .vid{display:none}body.vids nav.main .vid{display:inline}
.lang{display:inline-flex;background:#fff;border-radius:99px;padding:3px;gap:2px}.lang button{border:0;background:none;font:600 13px var(--sans);padding:5px 11px;border-radius:99px;cursor:pointer;color:var(--mut)}.lang button.on{background:var(--ink);color:#fff}
.hero{display:grid;grid-template-columns:440px minmax(0,1fr);gap:40px;align-items:center;padding:34px 0 150px}
.portrait{position:relative;width:420px;height:440px;margin:0 auto}
.portrait .blob{position:absolute;left:40px;bottom:10px;width:350px;height:350px;border-radius:50%;background:var(--blob)}
.portrait .blob::after{content:"";position:absolute;right:-26px;top:96px;width:0;height:0;border-left:58px solid var(--blob);border-top:30px solid transparent;border-bottom:30px solid transparent;transform:rotate(-24deg)}
.portrait .cut{position:absolute;left:55px;bottom:10px;width:320px;height:410px;border-radius:0 0 175px 175px;overflow:hidden;display:flex;align-items:flex-end;justify-content:center}
.portrait .cut img{width:132%;max-width:none;display:block;flex:none}
.portrait .cut .ph{margin:auto;color:var(--mut);font-size:14px;text-align:center}
.portrait svg.orbit{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hello{font:800 clamp(44px,5.6vw,84px)/1.08 var(--serif);letter-spacing:-.02em;margin:0 0 26px}
.hello .wave{display:inline-block;margin-left:.15em;font-size:.8em}.hello .u{position:relative;display:inline-block;white-space:nowrap}.hello .u svg{position:absolute;left:-2%;bottom:-.24em;width:104%;height:.32em}
.lead{font-size:clamp(20px,2.3vw,29px);line-height:1.45;color:var(--ink);margin:0 0 22px;letter-spacing:-.01em}.lead b{font-family:var(--serif);font-weight:800;text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}
.likes{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:0 0 16px;font-size:15px}.likes span{background:#fff;border-radius:99px;padding:4px 12px}.likes .lk{background:none;padding:0 4px 0 0;color:var(--mut);font-size:14px}
.plats{display:flex;gap:8px;flex-wrap:wrap}.plat{display:inline-flex;align-items:center;gap:7px;background:#fff;border-radius:99px;padding:6px 13px;font-size:13px;text-decoration:none}.plat i{width:9px;height:9px;border-radius:50%;display:inline-block}.plat small{color:var(--mut);font-size:11px}
.bigcard{position:relative;z-index:2;width:min(1140px,calc(100% - 64px));margin:-110px auto 0;background:#fff;border-radius:36px;box-shadow:0 30px 60px -40px #0004;padding:44px 52px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center}
.bigcard .badge{display:inline-flex;align-items:center;gap:12px;font:800 clamp(30px,3.4vw,46px)/1.1 var(--serif);letter-spacing:-.01em}.bigcard .badge i{width:58px;height:58px;border-radius:16px;background:var(--ink);display:grid;place-items:center;flex:none}.bigcard .badge i::after{content:"";width:22px;height:22px;border-radius:50%;background:var(--blob)}
.bigcard p{font-size:21px;line-height:1.5;margin:18px 0 22px;color:var(--ink2)}.bigcard .sm{font-size:14px;color:var(--mut);margin-top:12px}
.arrow{position:absolute;right:70px;top:-150px;width:110px;height:190px;pointer-events:none}
.mock{background:var(--panel);border-radius:22px;padding:16px;display:flex;flex-direction:column;gap:10px}.mock .row{background:#fff;border-radius:14px;padding:12px 14px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:10px;align-items:center;font-size:14px}.mock .row b{display:block}.mock .row small{color:var(--mut)}.mock .dot{width:12px;height:12px;border-radius:50%}.mock .go{font-size:12px;font-weight:700;background:var(--soft1);padding:3px 10px;border-radius:99px;white-space:nowrap}.mock .cap{font-size:12px;color:var(--mut);text-align:right}
.sec{padding:76px 0 0}.st{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:24px;flex-wrap:wrap}.st h2{font:800 clamp(30px,3.4vw,44px)/1.15 var(--serif);margin:0;letter-spacing:-.01em}.st small{color:var(--mut);font-size:16px}.st a{color:var(--acc);font-weight:700;text-decoration:none}
.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:99px;background:var(--soft2);font-weight:600}.tag.g{background:var(--panel);color:var(--mut)}.tag.n{background:var(--soft1)}
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.pil{border-radius:30px;padding:28px;display:flex;flex-direction:column;gap:10px}.pil:nth-child(1){background:var(--soft1)}.pil:nth-child(2){background:var(--soft2)}.pil:nth-child(3){background:var(--soft3)}
.pil .num{font:800 46px/1 var(--serif);opacity:.9}.pil .en{font-size:13px;color:var(--mut);font-weight:600}.pil h3{margin:0;font:800 27px/1.2 var(--serif)}.pil p{margin:0;color:var(--ink2);font-size:16px}.pil ul{list-style:none;padding:0;margin:8px 0 0}.pil li{padding:10px 0;border-top:1px solid #0000001a;font-size:15px;line-height:1.5}.pil li a{text-decoration:none;font-weight:600}.pil li a:hover{text-decoration:underline}
.pil .cnt{margin-top:auto;align-self:flex-start;background:#fff;border:0;border-radius:99px;padding:8px 16px;font:700 14px var(--sans);cursor:pointer}
.probs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.prob{border:2px solid var(--line);border-radius:24px;padding:20px;background:#fff;cursor:pointer;text-align:left;font:inherit;color:inherit;display:flex;gap:14px;align-items:flex-start;transition:transform .15s}.prob:hover,.prob.on{border-color:var(--ink);transform:translateY(-2px)}
.prob .ic{width:48px;height:48px;border-radius:50%;background:var(--panel);display:grid;place-items:center;font-size:22px;flex:none}.prob b{display:block;font-size:17px;line-height:1.4}.prob small{display:block;color:var(--mut);font-size:14px;margin-top:4px}.prob .n{display:block;font-size:13px;font-weight:700;color:var(--acc);margin-top:6px}
.probOut{margin-top:16px;border-radius:24px;padding:20px 24px;background:var(--panel);display:none}.probOut.on{display:block}.probOut ul{list-style:none;padding:0;margin:8px 0 0}.probOut li{padding:12px 0;border-top:1px solid var(--line)}.probOut a{text-decoration:none;font:700 18px/1.45 var(--serif)}.probOut .tl{display:block;font:400 14px var(--sans);color:var(--mut);margin-top:3px}
.feat{background:var(--panel);border-radius:32px;padding:38px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px}.feat .k{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--mut)}.feat h3{font:800 clamp(26px,2.8vw,36px)/1.25 var(--serif);margin:14px 0 0;letter-spacing:-.01em}.feat h3 a{text-decoration:none}
.feat .tld{background:#fff;border-radius:20px;padding:18px 20px;font-size:18px;font-weight:600;line-height:1.55}.feat .tld small{display:block;font-size:12px;color:var(--acc);font-weight:700;margin-bottom:4px}.feat p{color:var(--ink2);margin:16px 0 20px;font-size:16px}
.alist{list-style:none;padding:0;margin:26px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}.alist li{padding:22px 0;border-bottom:1px solid var(--line)}.alist .m{font-size:13px;color:var(--mut);display:flex;gap:10px;align-items:center;flex-wrap:wrap}.alist h3{font:700 21px/1.4 var(--serif);margin:8px 0}.alist h3 a{text-decoration:none}.alist h3 a:hover{text-decoration:underline;text-decoration-color:var(--squig);text-decoration-thickness:3px;text-underline-offset:5px}
.alist .tl{margin:0;color:var(--ink2);font-size:15px}.alist .tl::before{content:"一句话：";color:var(--acc);font-weight:700}html[lang=en] .alist .tl::before{content:"Short answer: "}
.notes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.note{background:var(--panel);border-radius:22px;padding:18px;display:flex;flex-direction:column;gap:8px}.note .tag{align-self:flex-start;background:#fff}.note p{margin:0;font-size:15px;color:var(--ink2)}.note small{color:var(--mut);font-size:12px;margin-top:auto}
.vidsec{display:none}body.vids .vidsec{display:block}.vgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.thumb{position:relative;aspect-ratio:16/9;width:100%;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,#1d2330,#3a4766);color:#fff;display:flex;align-items:flex-end;padding:14px}.thumb::after{content:"▶";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;border-radius:50%;background:var(--blob);color:#111;display:grid;place-items:center;font-size:16px}.thumb .tt{font:800 17px/1.3 var(--serif);max-width:85%}.thumb .pf{position:absolute;left:10px;top:10px;font-size:10px;font-weight:700;padding:1px 7px;border-radius:5px;background:#ff0033;color:#fff}
.vcard{text-decoration:none;display:flex;flex-direction:column;gap:8px}.vcard h3{font:700 17px/1.45 var(--serif);margin:0}.vcard .m{font-size:12px;color:var(--mut)}
.tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tl3{border-radius:26px;padding:24px;background:var(--panel);text-decoration:none;display:flex;flex-direction:column;gap:8px}.tl3 b{font:800 21px/1.3 var(--serif)}.tl3 p{margin:0;font-size:15px;color:var(--ink2)}.tl3 .tag{align-self:flex-start;background:#fff}
.about{display:grid;grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:center}
.stage{position:relative;margin:0;width:300px;justify-self:center}.stage::before{content:"";position:absolute;inset:18px -18px -18px 18px;border-radius:30px;background:var(--blob);transform:rotate(3deg)}.stage img{position:relative;width:100%;display:block;border-radius:30px}.stage figcaption{position:absolute;left:14px;bottom:14px;background:#fff;font-size:13px;font-weight:600;padding:3px 12px;border-radius:99px}
.about h2{font:800 clamp(30px,3.4vw,44px)/1.15 var(--serif);margin:0 0 14px}.about p{margin:0 0 16px;color:var(--ink2);font-size:18px}
.news{position:relative;background:var(--panel);border-radius:40px;padding:52px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px;align-items:center;margin-top:80px}.news h2{margin:0 0 10px;font:800 clamp(28px,3.2vw,42px)/1.2 var(--serif)}.news p{margin:0;color:var(--ink2);font-size:17px}
.news form{display:flex;gap:10px;background:#fff;border-radius:99px;padding:6px}.news input{flex:1;min-width:0;padding:10px 16px;border:0;border-radius:99px;font:inherit;outline:none;background:transparent}
.news .qr{font-size:13px;color:var(--mut);margin-top:10px}
.btn{border:0;border-radius:99px;padding:11px 20px;background:var(--ink);color:#fff;font:600 15px var(--sans);cursor:pointer;text-decoration:none;display:inline-block}
footer.site{padding:40px 0 50px;color:var(--mut);font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
#artView{display:none}.art{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:44px;padding:30px 0 60px;align-items:start}
.crumb{font-size:14px;color:var(--mut);margin-bottom:12px}.crumb a{text-decoration:none;color:var(--acc);font-weight:600}.art h1{font:800 clamp(30px,4vw,48px)/1.2 var(--serif);margin:0 0 14px;letter-spacing:-.01em}
.urlchip{display:inline-block;font:500 12px ui-monospace,monospace;background:var(--panel);border-radius:8px;padding:2px 9px;color:var(--ink2);margin:0 0 10px}.alsoin{font-size:14px;margin:0 0 18px}.alsoin a{color:var(--acc);font-weight:700;text-decoration:none}
.byline{display:flex;gap:12px;align-items:center;font-size:14px;color:var(--mut);margin-bottom:22px}.byline b{color:var(--ink)}
.ava{border-radius:50%;background:var(--panel);display:grid;place-items:center;color:var(--mut);font-weight:700;flex:none;text-align:center;line-height:1.3;width:42px;height:42px;font-size:10px;overflow:hidden}.ava.hasphoto{background:var(--blob)}.ava img{width:100%;height:100%;object-fit:cover;display:block}
.tldr{background:var(--soft1);border-radius:22px;padding:18px 22px;margin:0 0 22px}.tldr b{display:block;font-size:12px;color:var(--acc);margin-bottom:4px}.tldr p{margin:0;font-size:19px;font-weight:600;line-height:1.55}
.facts{width:100%;border-collapse:separate;border-spacing:0;margin:0 0 24px;font-size:15px;table-layout:fixed;border:1px solid var(--line);border-radius:16px;overflow:hidden}.facts th,.facts td{border-bottom:1px solid var(--line);padding:10px 14px;text-align:left;overflow-wrap:anywhere}.facts tr:last-child th,.facts tr:last-child td{border-bottom:0}.facts th{background:var(--panel);width:32%}
.avid{display:none;border-radius:20px;overflow:hidden;margin:0 0 24px}body.vids .avid.has{display:block}.avid .vh{font:600 13px var(--sans);padding:8px 14px;background:var(--panel)}.avid .thumb{border-radius:0}
.body h2{font:800 26px/1.3 var(--serif);margin:32px 0 10px}.body p{margin:0 0 16px;font-size:18px}.ph{color:var(--mut);background:var(--panel);border-radius:14px;padding:12px 16px;font-size:14px}
.faq h2{font:800 26px/1.3 var(--serif)}.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{font-weight:700;cursor:pointer}
.authorbox{display:flex;gap:16px;background:var(--panel);border-radius:24px;padding:20px;margin-top:30px}.authorbox .ava{width:72px;height:72px}.authorbox p{margin:4px 0 10px;color:var(--ink2);font-size:15px}
.toc{position:sticky;top:60px;background:var(--panel);border-radius:22px;padding:18px;font-size:14px}.toc a{display:block;text-decoration:none;color:var(--ink2);padding:4px 0}.toc .cta{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
@media (max-width:980px){.hero{grid-template-columns:1fr;gap:6px;padding-bottom:130px}.portrait{width:320px;height:330px}.portrait .blob{left:30px;width:260px;height:260px}.portrait .blob::after{right:-20px;top:70px;border-left-width:44px;border-top-width:22px;border-bottom-width:22px}.portrait .cut{left:40px;width:240px;height:310px;border-radius:0 0 130px 130px}
  .hello,.lead{text-align:center}.plats,.likes{justify-content:center}.bigcard{grid-template-columns:1fr;padding:32px}.arrow{display:none}
  .pillars,.probs,.tools,.vgrid,.notes{grid-template-columns:repeat(2,minmax(0,1fr))}.feat,.alist,.art,.news,.about{grid-template-columns:1fr}.toc{position:static}.stage{width:240px}}
@media (max-width:640px){.panel{border-radius:28px;margin:10px 10px 0;padding:18px 18px 0}.logo{font-size:26px}nav.main{gap:12px;font-size:15px}nav.main a:not(.pill){display:none}nav.main .pill{padding:9px 16px;font-size:14px}
  .portrait{width:260px;height:270px}.portrait .blob{left:25px;bottom:6px;width:210px;height:210px}.portrait .blob::after{display:none}.portrait .cut{left:30px;bottom:6px;width:200px;height:262px;border-radius:0 0 105px 105px}.portrait svg.orbit{display:none}
  .hero{padding:10px 0 110px}.hello{margin-bottom:16px;font-size:38px}.bigcard{width:calc(100% - 20px);margin-top:-90px;padding:24px 20px;border-radius:26px}.bigcard p{font-size:18px}
  .wrap{padding:0 16px}.pillars,.probs,.tools,.vgrid,.notes{grid-template-columns:1fr}.toc{display:none}.feat{padding:24px;border-radius:24px}.news{padding:28px 22px;border-radius:28px}.news form{flex-direction:column;border-radius:20px}.sec{padding-top:56px}.pil{border-radius:24px;padding:22px}.mock .cap{text-align:left}}
/* —— 正式站补充（Demo 里没有的） —— */
.draftbar{position:sticky;top:0;z-index:60;background:#ff6b5a;color:#fff;text-align:center;font:600 13px var(--sans);padding:6px 12px}
.lang a{font:600 13px var(--sans);padding:5px 11px;border-radius:99px;color:var(--mut);text-decoration:none}.lang a.on{background:var(--ink);color:#fff}
a.tag{text-decoration:none;color:inherit}.plat[aria-disabled]{cursor:default}
.body ul,.body ol{padding-left:1.4em;margin:0 0 16px;font-size:18px}.body li{margin:4px 0}.body blockquote{margin:0 0 16px;padding:12px 18px;background:var(--panel);border-radius:16px;color:var(--ink2)}.body blockquote p{margin:0}
.body code{font-size:.9em;background:var(--panel);padding:1px 6px;border-radius:6px}.body pre{background:#17181c;color:#f5f1e8;padding:16px;border-radius:16px;overflow:auto;font-size:14px}.body pre code{background:none;padding:0}
.body img{max-width:100%;border-radius:16px}.body table{width:100%;border-collapse:collapse;margin:0 0 16px;font-size:15px;display:block;overflow-x:auto}.body th,.body td{border:1px solid var(--line);padding:8px 10px;text-align:left}.body th{background:var(--panel)}
.body a{color:var(--acc)}.faq details p{color:var(--ink2);margin:8px 0 0}