/* YIBUE */
@font-face{font-family:"Figtree";font-style:normal;font-weight:400 800;font-display:swap;src:url(/assets/fonts/figtree-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Syncopate";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/syncopate-700-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
:root{
  --paper:#FFFFFF;--warm:#F6F5F2;--warm2:#F0EEE8;--ink:#1C1D21;--ink2:#55575E;--ink3:#8E9097;--rule:#E7E4DD;
  --gold:#B4955A;--gold2:#D8C08E;--gold3:#F4ECDC;--card1:#17181C;--card2:#2B2C32;
  --warnbg:#FBF1E4;--warnline:#C98A2E;--stopbg:#FBE9E7;--stopline:#B4483B;--okbg:#EEF4EF;--okline:#4E7A5B;
  --cjk:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --wide:"Syncopate","Figtree",var(--cjk);
  --body:"Figtree",var(--cjk);
  --r:16px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.78 var(--body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.yb-wrap{max-width:1220px;margin:0 auto;padding:0 36px}
.yb-skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:9}
.yb-skip:focus{left:12px}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* masthead */
.yb-top{display:flex;align-items:center;gap:30px;height:84px}
.yb-mark{display:flex;align-items:center;gap:12px;font:700 17px/1 var(--wide);letter-spacing:.32em;white-space:nowrap}
.yb-mark i{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--gold2),var(--gold));flex:none}
.yb-nav{display:flex;gap:28px;margin-left:auto;font-size:15px;font-weight:500;color:var(--ink2)}
.yb-nav a{position:relative;padding:6px 0;white-space:nowrap}
.yb-nav a:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--gold);transform:scaleX(0);transition:transform .25s}
.yb-nav a:hover,.yb-nav a[aria-current]{color:var(--ink)}
.yb-nav a:hover:after,.yb-nav a[aria-current]:after{transform:scaleX(1)}
.yb-find{display:flex;align-items:center;gap:9px;border:1px solid var(--rule);border-radius:999px;padding:0 6px 0 16px;min-width:210px;height:42px;background:#fff}
.yb-find svg{flex:none;color:var(--ink3)}
.yb-find input{border:0;outline:0;background:transparent;font:14px var(--body);color:var(--ink);width:100%;min-width:0}
.yb-find input::placeholder{color:var(--ink3)}
.yb-hair{height:1px;background:linear-gradient(90deg,transparent,var(--rule) 12%,var(--rule) 88%,transparent)}

/* shared bits */
.yb-eye{display:flex;align-items:center;gap:14px;font:700 11px/1 var(--wide);letter-spacing:.3em;color:var(--gold);text-transform:uppercase}
.yb-eye:before{content:"";width:36px;height:1px;background:var(--gold);flex:none}
.yb-eye span{font:600 13px/1.3 var(--body);letter-spacing:.04em;color:var(--ink3);text-transform:none}
.yb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border:0;border-radius:999px;padding:0 26px;background:var(--ink);color:#fff;font:700 15px/1 var(--body);cursor:pointer;box-shadow:0 10px 24px -14px rgba(23,24,28,.8)}
.yb-btn:hover{background:#000}
.yb-btn.is-done{background:#2F5A3E}
.yb-kicker{font:700 10.5px/1 var(--wide);letter-spacing:.28em;color:var(--gold);text-transform:uppercase}

/* home hero */
.yb-hero{display:grid;grid-template-columns:1.05fr .95fr;grid-template-rows:auto 1fr;grid-template-areas:"intro card" "more card";column-gap:72px;padding:60px 0 56px;align-items:start}
.yb-hero-intro{grid-area:intro}.yb-hero-more{grid-area:more}.yb-hero-card{grid-area:card}
.yb-hero h1{font-size:50px;line-height:1.16;font-weight:800;letter-spacing:-.01em;margin:22px 0 22px}
.yb-hero h1 em{font-style:normal;background:linear-gradient(180deg,transparent 64%,var(--gold3) 64%)}
.yb-lead{font-size:17.5px;color:var(--ink2);margin:0 0 30px;max-width:31em}
.yb-facts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);margin:0 0 28px;padding:0;list-style:none}
.yb-facts li{padding:18px 18px 16px 0}
.yb-facts li+li{padding-left:20px;border-left:1px solid var(--rule)}
.yb-facts b{display:block;font:800 30px/1 var(--body);letter-spacing:-.02em}
.yb-facts b small{font-size:15px;font-weight:700;color:var(--gold);margin-left:3px}
.yb-facts span{display:block;font-size:13.5px;line-height:1.5;color:var(--ink2);margin-top:8px}
.yb-facts a{border-bottom:1px solid var(--gold2)}
.yb-read{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;padding:18px 22px;border-radius:var(--r);background:var(--warm);transition:background .25s}
.yb-read:hover{background:var(--warm2)}
.yb-read .yb-kicker{display:block;margin-bottom:9px}
.yb-read b{display:block;font-size:17px;line-height:1.45}
.yb-read i{display:block;font-style:normal;font-size:13px;color:var(--ink3);margin-top:4px}
.yb-read svg{width:44px;height:44px;flex:none}
.yb-region{margin:18px 0 0;font-size:14px;color:var(--ink2)}
.yb-region a{color:var(--ink);border-bottom:1px solid var(--gold)}

/* black card */
.yb-stage{position:relative;padding:26px 0 0}
.yb-stage:before{content:"";position:absolute;right:-10px;top:-30px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(216,192,142,.35),rgba(216,192,142,0) 68%);z-index:0;pointer-events:none}
.yb-bcard{position:relative;z-index:1;aspect-ratio:1.586;border-radius:24px;padding:28px 30px;color:#EDE6D6;display:flex;flex-direction:column;transform:rotate(-3deg);
  background:linear-gradient(115deg,rgba(255,255,255,.07) 0 28%,rgba(255,255,255,0) 28% 100%),linear-gradient(135deg,var(--card2),var(--card1) 62%);
  box-shadow:0 30px 60px -24px rgba(23,24,28,.55),inset 0 1px 0 rgba(255,255,255,.08)}
.yb-bcard .r1{display:flex;justify-content:space-between;align-items:center;font:700 11px/1 var(--wide);letter-spacing:.3em;color:#BDB4A0}
.yb-chip{width:48px;height:36px;border-radius:7px;background:linear-gradient(135deg,#E9D7A8,#B4955A 55%,#8C7140);position:relative;margin-top:30px}
.yb-chip:before,.yb-chip:after{content:"";position:absolute;left:8px;right:8px;height:1px;background:rgba(60,45,20,.45)}
.yb-chip:before{top:12px}.yb-chip:after{bottom:12px}
.yb-bcard .lab{margin-top:auto;font:600 12px/1 var(--body);letter-spacing:.12em;color:#A9A193}
.yb-code{font:700 40px/1.1 var(--wide);letter-spacing:.14em;margin-top:10px;background:linear-gradient(180deg,#F8EED6,#C9AA6C);-webkit-background-clip:text;background-clip:text;color:transparent;word-break:break-all}
.yb-bcard .r3{display:flex;justify-content:space-between;align-items:flex-end;margin-top:16px;font:700 10px/1 var(--wide);letter-spacing:.26em;color:#8F897C}
.yb-act{position:relative;z-index:1;margin-top:34px;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}
.yb-gain{margin:0;font-size:15px;font-weight:700;line-height:1.5}
.yb-gain small{display:block;font-weight:500;font-size:13px;color:var(--ink3);line-height:1.55;margin-top:4px}

/* home sections */
.yb-band{background:var(--warm);padding:56px 0 64px}
.yb-sec-h{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin:0 0 26px}
.yb-sec-h h2{font:800 26px/1.25 var(--body);margin:0}
.yb-sec-h p{margin:6px 0 0;color:var(--ink2)}
.yb-sec-h a{font-size:14px;font-weight:600;border-bottom:1px solid var(--gold);white-space:nowrap}
.yb-route{columns:2;column-gap:56px;margin:0;padding:0;list-style:none}
.yb-route>li{break-inside:avoid;border-top:1px solid var(--rule);padding:18px 0 14px}
.yb-route .st{display:flex;align-items:baseline;gap:14px;margin-bottom:8px}
.yb-route .st b{font:700 13px/1 var(--wide);letter-spacing:.2em;color:var(--gold)}
.yb-route .st strong{font-size:17px}
.yb-route .st span{font-size:13px;color:var(--ink3)}
.yb-route ul{margin:0;padding:0 0 0 46px;list-style:none}
.yb-route ul a{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:15px;color:var(--ink2);transition:color .2s}
.yb-route ul a:hover{color:var(--ink)}
.yb-route ul a svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--ink3);transition:transform .2s}
.yb-route ul a:hover svg{transform:translateX(3px);color:var(--gold)}
.yb-split{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;padding:60px 0 70px}
.yb-tools{display:grid;gap:14px}
.yb-tool-link{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;padding:20px 22px;border-radius:var(--r);background:var(--card1);color:#EDE6D6}
.yb-tool-link:hover{background:#000}
.yb-tool-link .ic{width:46px;height:46px;border-radius:12px;border:1px solid #3A3B42;display:grid;place-items:center;color:var(--gold2)}
.yb-tool-link b{display:block;font-size:16px;color:#fff}
.yb-tool-link i{display:block;font-style:normal;font-size:13px;color:#A9A193}
.yb-chips{display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none}
.yb-chips a,.yb-chips span{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;border-radius:999px;border:1px solid var(--rule);font-size:14px;background:#fff}
.yb-chips a:hover{border-color:var(--gold)}
.yb-chips small{color:var(--ink3);font-size:12px}
.yb-recent{margin:0;padding:0;list-style:none}
.yb-recent li{border-top:1px solid var(--rule)}
.yb-recent a{display:grid;grid-template-columns:1fr auto;gap:16px;padding:14px 0;font-size:15px}
.yb-recent time{font-size:13px;color:var(--ink3);white-space:nowrap}

/* breadcrumbs + article head */
.yb-crumbs{display:flex;flex-wrap:wrap;gap:8px;padding:22px 0 0;margin:0;list-style:none;font-size:13px;color:var(--ink3)}
.yb-crumbs li+li:before{content:"/";margin-right:8px;color:var(--rule)}
.yb-crumbs a:hover{color:var(--ink)}
.yb-ahead{padding:34px 0 30px;max-width:860px}
.yb-ahead h1{font-size:40px;line-height:1.24;font-weight:800;letter-spacing:-.005em;margin:18px 0 14px}
.yb-dek{font-size:17.5px;line-height:1.7;color:var(--ink2);margin:0 0 18px}
.yb-by{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--ink3)}
.yb-by b{color:var(--ink);font-weight:600}
.yb-by a{border-bottom:1px solid var(--rule)}
.yb-risk{margin:0 0 6px;padding:12px 16px;border-radius:12px;background:var(--warnbg);border-left:3px solid var(--warnline);font-size:14px;color:var(--ink2)}
.yb-headrow{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;align-items:center}
.yb-headrow.has-cover{grid-template-columns:minmax(0,1fr) 400px}
.yb-headrow .yb-ahead{max-width:none}
.yb-cover{margin:0 0 34px}
.yb-headrow .yb-cover{margin:34px 0 30px}
.yb-cover img{display:block;width:100%;border-radius:20px;background:var(--warm);box-shadow:0 24px 50px -30px rgba(23,24,28,.45)}
.yb-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:0 0 6px;align-items:start}
.yb-pair .yb-shot{margin-bottom:20px}
.yb-cover figcaption{font-size:13px;color:var(--ink3);margin-top:10px}

/* article body grid */
.yb-body{display:grid;grid-template-columns:230px minmax(0,1fr);gap:64px;align-items:start;padding-bottom:40px}
.yb-toc{position:sticky;top:24px;font-size:14px}
.yb-toc .yb-kicker{display:block;margin-bottom:14px}
.yb-toc ul{margin:0;padding:0;list-style:none;border-left:1px solid var(--rule)}
.yb-toc li a{display:block;padding:6px 0 6px 16px;margin-left:-1px;border-left:1px solid transparent;color:var(--ink3);line-height:1.45}
.yb-toc li a:hover{color:var(--ink);border-left-color:var(--gold)}
.yb-toc details summary{display:none}
.yb-toc details:not([open]) summary{display:block;cursor:pointer;font-weight:700;font-size:14px;padding:4px 0}
.yb-prose{max-width:720px;font-size:16.5px;line-height:1.85}
.yb-prose>*:first-child{margin-top:0}
.yb-prose h2{font-size:26px;line-height:1.35;font-weight:800;margin:52px 0 16px;scroll-margin-top:20px}
.yb-prose h3{font-size:19px;line-height:1.45;font-weight:700;margin:34px 0 10px}
.yb-prose p{margin:0 0 18px}
.yb-prose ul,.yb-prose ol{margin:0 0 20px;padding-left:1.4em}
.yb-prose li{margin:6px 0}
.yb-prose li::marker{color:var(--gold)}
.yb-prose a{color:var(--ink);border-bottom:1px solid var(--gold2);transition:border-color .2s}
.yb-prose a:hover{border-bottom-color:var(--ink)}
.yb-prose strong{font-weight:700}
.yb-prose .kp{background:linear-gradient(180deg,transparent 60%,var(--gold3) 60%)}
.yb-prose hr{border:0;height:1px;background:var(--rule);margin:40px 0}
.yb-prose blockquote{margin:0 0 20px;padding:2px 0 2px 18px;border-left:3px solid var(--rule);color:var(--ink2)}
.yb-prose code{font-family:inherit;background:var(--warm);border-radius:6px;padding:1px 6px;font-size:.94em;overflow-wrap:anywhere;word-break:break-all}
.yb-prose ol.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 24px}
.yb-prose ol.steps>li{counter-increment:s;position:relative;padding:0 0 18px 54px;margin:0}
.yb-prose ol.steps>li:before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:2px;font:700 12px/1 var(--wide);letter-spacing:.14em;color:var(--gold);width:40px;height:28px;display:grid;place-items:center;border:1px solid var(--gold2);border-radius:999px}
.yb-prose ol.steps>li:after{content:"";position:absolute;left:20px;top:36px;bottom:4px;width:1px;background:var(--rule)}
.yb-prose ol.steps>li:last-child:after{display:none}
.yb-table{overflow-x:auto;margin:0 0 24px;border:1px solid var(--rule);border-radius:14px}
.yb-table table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.6}
.yb-table th{background:var(--warm);text-align:left;font-weight:700;padding:11px 14px;border-bottom:1px solid var(--rule);white-space:nowrap}
.yb-table td{padding:11px 14px;border-top:1px solid var(--rule);vertical-align:top;min-width:5.5em}
.yb-table tr:first-child td{border-top:0}

/* blocks */
.yb-note{margin:0 0 22px;padding:16px 18px 2px;border-radius:14px;background:var(--warm);border-left:3px solid var(--gold)}
.yb-note.warn{background:var(--warnbg);border-left-color:var(--warnline)}
.yb-note.stop{background:var(--stopbg);border-left-color:var(--stopline)}
.yb-note.ok{background:var(--okbg);border-left-color:var(--okline)}
.yb-note>b{display:block;margin-bottom:6px;font-size:15px}
.yb-note p{margin:0 0 14px;font-size:15.5px}
.yb-basis{margin:0 0 24px;padding:14px 18px;border-left:2px solid var(--gold);background:linear-gradient(90deg,var(--gold3),rgba(244,236,220,0));font-size:14.5px;line-height:1.7;color:var(--ink2)}
.yb-basis p{margin:0 0 8px}.yb-basis p:last-child{margin:0}
.yb-basis b{color:var(--ink)}
.yb-basis a{border-bottom:1px solid var(--gold2)}
.yb-prose .yb-basis-line{margin:0 0 26px;font-size:14px;line-height:1.75;color:var(--ink3)}
.yb-basis-line .lab{display:inline-block;margin-right:10px;padding:0 8px;border:1px solid var(--rule);border-radius:999px;font-size:12px;font-weight:700;line-height:20px;color:var(--ink2);letter-spacing:.06em;vertical-align:1px}
.yb-basis-line a{color:var(--ink2);border-bottom:1px solid var(--rule)}
.yb-state{margin:0 0 26px;border:1px solid var(--rule);border-radius:16px;overflow:hidden}
.yb-state>header{display:flex;align-items:center;gap:12px;padding:12px 18px;background:var(--warm);border-bottom:1px solid var(--rule)}
.yb-state>header small{font:700 10px/1 var(--wide);letter-spacing:.26em;color:var(--gold)}
.yb-state>header b{font-size:15.5px}
.yb-state>div{padding:16px 18px 2px}
.yb-state>div p{margin:0 0 14px}
.yb-shot{margin:0 0 26px}
.yb-shot .frame{display:block;margin:0 auto;max-width:100%;border-radius:18px;border:1px solid var(--rule);background:var(--warm);padding:10px}
.yb-shot.phone .frame{max-width:340px;border-radius:30px;border:8px solid var(--ink);padding:0;background:#fff;overflow:hidden}
.yb-shot img{display:block;width:100%;border-radius:10px}
.yb-shot.phone img{border-radius:0}
.yb-shot figcaption{text-align:center;font-size:13px;color:var(--ink3);margin-top:10px}
.yb-fig{margin:0 0 26px}
.yb-fig img{display:block;width:100%;border-radius:16px;border:1px solid var(--rule)}
.yb-fig figcaption{font-size:13px;color:var(--ink3);margin-top:8px}

/* code card */
.yb-cc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center;margin:8px 0 30px;padding:24px;border-radius:22px;background:var(--warm)}
.yb-cc .yb-bcard{transform:none;padding:20px 22px;border-radius:18px}
.yb-cc .yb-code{font-size:28px}
.yb-cc .yb-chip{margin-top:16px;width:40px;height:30px}
.yb-cc .side p{margin:0 0 12px;font-size:15px}
.yb-cc .acts{display:flex;flex-wrap:wrap;gap:10px;margin:2px 0 4px}
.yb-cc .yb-go{background:linear-gradient(135deg,var(--gold2),var(--gold));color:var(--ink);text-decoration:none;box-shadow:0 12px 26px -14px rgba(120,92,40,.9)}
.yb-cc .yb-go:hover{background:linear-gradient(135deg,var(--gold3),var(--gold2))}
.yb-cc .yb-btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.yb-cc .yb-btn.ghost:hover{background:var(--ink);color:#fff}
.yb-cc .yb-btn.ghost.is-done{background:#2F5A3E;color:#fff;box-shadow:none}
.yb-cc .fine{font-size:12.5px;color:var(--ink3);margin:10px 0 0}

/* FAQ */
.yb-faq{margin:46px 0 10px;border-top:1px solid var(--rule)}
.yb-faq h2{margin-top:30px}
.yb-faq details{border-bottom:1px solid var(--rule);padding:4px 0}
.yb-faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:14px 0;font-weight:700;font-size:16.5px}
.yb-faq summary::-webkit-details-marker{display:none}
.yb-faq summary:after{content:"+";font-weight:400;color:var(--gold);font-size:22px;line-height:1}
.yb-faq details[open] summary:after{content:"–"}
.yb-faq details p{margin:0 0 16px;color:var(--ink2)}

/* after article */
.yb-after{border-top:1px solid var(--rule);margin-top:40px;padding-top:30px;display:grid;gap:30px}
.yb-tagline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px}
.yb-tagline .yb-kicker{margin-right:6px}
.yb-tagline a,.yb-tagline span.t{padding:6px 13px;border-radius:999px;border:1px solid var(--rule);background:#fff}
.yb-tagline a:hover{border-color:var(--gold)}
.yb-tagline span.t{color:var(--ink3)}
.yb-author{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;padding:20px 22px;border-radius:var(--r);background:var(--warm);font-size:14.5px;color:var(--ink2)}
.yb-author .av{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--card2),var(--card1));display:grid;place-items:center;font:700 15px/1 var(--body);color:var(--gold2)}
.yb-author b{color:var(--ink);font-size:15.5px}
.yb-author p{margin:4px 0 0}
.yb-author a{border-bottom:1px solid var(--gold2)}
.yb-next{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.yb-next a{display:block;padding:18px 20px;border:1px solid var(--rule);border-radius:var(--r);transition:border-color .2s}
.yb-next a:hover{border-color:var(--gold)}
.yb-next small{display:block;font:700 10px/1 var(--wide);letter-spacing:.26em;color:var(--gold);margin-bottom:8px}
.yb-next b{font-size:15.5px;line-height:1.45}
.yb-next a.nx{text-align:right}
.yb-stuck{padding:20px 22px;border-radius:var(--r);border:1px dashed var(--gold2);font-size:14.5px;color:var(--ink2)}
.yb-stuck b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}
.yb-stuck a{font-weight:700;color:var(--ink);border-bottom:1px solid var(--gold)}

/* lists */
.yb-lhead{padding:40px 0 30px;max-width:820px}
.yb-lhead h1{font-size:40px;line-height:1.22;font-weight:800;margin:16px 0 14px}
.yb-lhead .intro{font-size:16.5px;color:var(--ink2)}
.yb-lhead .intro p{margin:0 0 12px}
.yb-group{margin:0 0 40px}
.yb-group h2{display:flex;align-items:baseline;gap:14px;font-size:20px;margin:0 0 6px;padding-top:18px;border-top:1px solid var(--ink)}
.yb-group h2 b{font:700 12px/1 var(--wide);letter-spacing:.2em;color:var(--gold)}
.yb-group>p{margin:0 0 10px;color:var(--ink3);font-size:14px}
.yb-items{margin:0;padding:0;list-style:none}
.yb-items li{border-bottom:1px solid var(--rule)}
.yb-items a{display:grid;grid-template-columns:1fr auto;gap:20px;padding:16px 0;align-items:baseline}
.yb-items a:has(.th){grid-template-columns:132px minmax(0,1fr) auto;align-items:center}
.yb-items .th{display:block;width:132px;height:auto;aspect-ratio:1200/630;object-fit:cover;border-radius:10px;background:var(--warm);box-shadow:0 8px 18px -14px rgba(23,24,28,.6)}
.yb-stuckidx{margin:0;padding:0;list-style:none;border-top:1px solid var(--rule)}
.yb-stuckidx a{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) 18px;gap:18px;align-items:center;padding:14px 0;border-bottom:1px solid var(--rule)}
.yb-stuckidx .see{font-size:15px;font-weight:600;color:var(--ink)}
.yb-stuckidx .see:before{content:"「";color:var(--gold)}.yb-stuckidx .see:after{content:"」";color:var(--gold)}
.yb-stuckidx .go{font-size:13.5px;color:var(--ink2)}
.yb-stuckidx svg{width:16px;height:16px;color:var(--ink3);transition:transform .2s}
.yb-stuckidx a:hover svg{transform:translateX(3px);color:var(--gold)}
.yb-hero-card .yb-read{margin-top:28px}
.yb-peek{display:none}
.yb-items a b{display:block;font-size:17px;line-height:1.45}
.yb-items a i{display:block;font-style:normal;font-size:14px;color:var(--ink3);margin-top:4px}
.yb-items time{font-size:13px;color:var(--ink3);white-space:nowrap}
.yb-items a:hover b{text-decoration:underline;text-decoration-color:var(--gold2);text-underline-offset:4px}
.yb-count{font-size:13px;color:var(--ink3)}
.yb-pager{display:flex;justify-content:space-between;gap:16px;margin:10px 0 50px;font-weight:600}
.yb-pager a{border-bottom:1px solid var(--gold)}

/* tools */
.yb-toolbox{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:24px;margin:0 0 36px}
.yb-panel{padding:24px;border-radius:20px;border:1px solid var(--rule);background:#fff}
.yb-panel h2{font-size:18px;margin:0 0 14px}
.yb-q{margin:0 0 18px;border:0;padding:0}
.yb-q legend{font-weight:700;font-size:15px;margin-bottom:10px;padding:0}
.yb-opts{display:grid;gap:8px}
.yb-opts label{display:flex;gap:10px;align-items:flex-start;padding:11px 14px;border:1px solid var(--rule);border-radius:12px;cursor:pointer;font-size:15px;line-height:1.5;min-height:44px}
.yb-opts label:hover{border-color:var(--gold2)}
.yb-opts input{margin-top:5px;accent-color:var(--ink)}
.yb-opts label:has(input:checked){border-color:var(--ink);background:var(--warm)}
.yb-field{display:grid;gap:6px;margin:0 0 14px;font-size:14.5px;font-weight:600}
.yb-field input,.yb-field select{font:15px var(--body);padding:11px 12px;border:1px solid var(--rule);border-radius:12px;background:#fff;color:var(--ink);min-height:44px}
.yb-out{padding:24px;border-radius:20px;background:linear-gradient(135deg,var(--card2),var(--card1) 70%);color:#EDE6D6;min-height:220px}
.yb-out .yb-kicker{color:var(--gold2)}
.yb-out h3{font-size:24px;line-height:1.3;color:#fff;margin:12px 0 10px}
.yb-out .big{font:800 30px/1.2 var(--body);color:#F8EED6;margin:6px 0}
.yb-out p,.yb-out li{font-size:14.5px;color:#CFC8B8}
.yb-out ul{padding-left:1.2em;margin:8px 0 12px}
.yb-out a{color:#F8EED6;border-bottom:1px solid var(--gold)}
.yb-guide{margin:0 0 30px;border:1px solid var(--rule);border-radius:16px;padding:6px 20px}
.yb-guide summary{cursor:pointer;font-weight:700;padding:12px 0}
.yb-hint{margin:-6px 0 14px;font-size:13.5px;color:var(--ink3)}
.yb-when{display:grid;gap:10px}
.yb-when .row{display:grid;gap:10px;padding:12px 14px;border:1px solid var(--rule);border-radius:12px}
.yb-when .row:has(input:checked){border-color:var(--ink);background:var(--warm)}
.yb-when .ck{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.5;cursor:pointer}
.yb-when .ck input{margin-top:5px;accent-color:var(--ink)}
.yb-when input[type=datetime-local]{font:15px var(--body);padding:9px 10px;border:1px solid var(--rule);border-radius:10px;min-height:44px;width:100%;background:#fff;color:var(--ink)}
.yb-when input:disabled{opacity:.4}
.yb-out .sub{margin:0 0 8px}
.yb-out .yb-checks{list-style:none;padding:0;margin:14px 0}
.yb-checks li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:start;padding:10px 0;border-top:1px solid #34353C}
.yb-checks li:first-child{border-top:0}
.yb-checks .st{font-size:12px;font-weight:700;line-height:22px;padding:0 9px;border-radius:999px;white-space:nowrap}
.yb-checks .st.ok{background:rgba(216,192,142,.16);color:var(--gold2)}
.yb-checks .st.no{background:#5B302B;color:#F5D6CF}
.yb-checks .st.do{background:#303137;color:#CFC8B8}

/* plain + search + 404 */
.yb-plain{max-width:760px;padding:10px 0 60px}
.yb-plain h2{font-size:22px;margin:38px 0 12px}
.yb-sbox{display:flex;gap:10px;margin:0 0 20px}
.yb-sbox input{flex:1;font:16px var(--body);padding:13px 16px;border:1px solid var(--rule);border-radius:14px;min-height:48px}
.yb-hits{margin:0;padding:0;list-style:none}
.yb-hits li{border-bottom:1px solid var(--rule);padding:14px 0}
.yb-hits a b{font-size:16.5px}
.yb-hits p{margin:4px 0 0;font-size:14px;color:var(--ink3)}
.yb-miss{padding:18px 20px;border-radius:14px;background:var(--warm);color:var(--ink2)}

/* footer */
.yb-foot{background:var(--card1);color:#B9B3A6;margin-top:30px;padding:56px 0 40px;font-size:14px}
.yb-foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.yb-foot .yb-mark{color:#EDE6D6}
.yb-foot p{margin:14px 0 0;line-height:1.75}
.yb-foot h3{font:700 10.5px/1 var(--wide);letter-spacing:.28em;color:var(--gold2);margin:4px 0 14px}
.yb-foot ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.yb-foot a:hover{color:#fff}
.yb-foot .legal{margin-top:40px;padding-top:22px;border-top:1px solid #2E2F35;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#8F897C}

@media (max-width:1100px){
  .yb-hero{grid-template-columns:1fr;grid-template-rows:none;grid-template-areas:"intro" "card" "more";row-gap:30px}
  .yb-route{columns:1}
  .yb-split{grid-template-columns:1fr;gap:40px}
  .yb-body{grid-template-columns:minmax(0,1fr);gap:0}
  .yb-headrow.has-cover{grid-template-columns:minmax(0,1fr);gap:0}
  .yb-headrow .yb-cover{margin:0 0 30px}
  .yb-toc{position:static;margin:0 0 30px;border:1px solid var(--rule);border-radius:14px;padding:4px 16px}
  .yb-toc.is-empty{display:none}
  .yb-toc details:not([open]) summary{font-size:15px;padding:12px 0}
  .yb-toc details summary{display:block;cursor:pointer;padding:12px 0;font-weight:700;font-size:15px}
  .yb-toc .yb-kicker{display:none}
  .yb-toc ul{border-left:0;padding-bottom:10px}
  .yb-toc li a{padding-left:0}
  .yb-toolbox{grid-template-columns:minmax(0,1fr)}
  .yb-peek{display:block;position:fixed;left:16px;right:16px;bottom:16px;z-index:20;min-height:48px;border:0;border-radius:999px;background:var(--card1);color:#F8EED6;font:600 14px/1.4 var(--body);padding:12px 20px;text-align:left;box-shadow:0 14px 30px -12px rgba(0,0,0,.65);cursor:pointer}
  .yb-peek[hidden]{display:none}
  .yb-foot .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .yb-wrap{padding:0 16px}
  .yb-top{height:auto;flex-wrap:wrap;gap:10px 16px;padding:16px 0 12px}
  .yb-mark{font-size:14px}
  .yb-nav{order:3;width:100%;margin:0;overflow-x:auto;white-space:nowrap;gap:16px;font-size:14px;scrollbar-width:none}
  .yb-nav a{padding:12px 0}
  .yb-foot ul{gap:0}.yb-foot li a{display:inline-block;padding:12px 0}
  .yb-when .ck{min-height:44px;align-items:center}.yb-when .ck input{margin-top:0}
  .yb-find{min-width:0;flex:1;max-width:220px;margin-left:auto;height:40px}
  .yb-eye{font-size:10px;letter-spacing:.24em;gap:10px}.yb-eye:before{width:20px}.yb-eye span{display:none}
  .yb-hero{padding:22px 0 36px;row-gap:18px}
  .yb-hero h1{font-size:28px;margin:14px 0 0}
  .yb-lead{font-size:15.5px;margin-bottom:22px}
  .yb-stage{padding:6px 0 0}.yb-stage:before{width:240px;height:240px}
  .yb-bcard{transform:none;padding:18px 20px;border-radius:18px}
  .yb-chip{margin-top:12px;width:40px;height:30px}
  .yb-code{font-size:27px}
  .yb-act{margin-top:16px;grid-template-columns:1fr;gap:12px}.yb-act .yb-btn{width:100%}
  .yb-facts b{font-size:22px}.yb-facts span{font-size:13px}.yb-facts li{padding:14px 10px 12px 0}.yb-facts li+li{padding-left:10px}
  .yb-band{padding:40px 0 46px}
  .yb-sec-h{flex-direction:column;align-items:flex-start;gap:8px}.yb-sec-h h2{font-size:22px}
  .yb-route ul{padding-left:0}
  .yb-ahead{padding:20px 0 22px}.yb-ahead h1{font-size:27px}.yb-dek{font-size:15.5px}
  .yb-prose{font-size:16px}.yb-prose h2{font-size:22px;margin-top:42px}
  .yb-cc{grid-template-columns:1fr;padding:16px}.yb-cc .acts .yb-btn{width:100%}.yb-cc .side{order:-1;display:flex;flex-direction:column}.yb-cc .side>p:first-child{order:1;margin:12px 0 0}.yb-cc .side .fine{order:2}
  .yb-headrow .yb-cover{display:none}
  .yb-pair{grid-template-columns:1fr}
  .yb-next{grid-template-columns:1fr}.yb-next a.nx{text-align:left}
  .yb-lhead h1{font-size:28px}
  .yb-items a{grid-template-columns:1fr}
  .yb-items a:has(.th){grid-template-columns:88px minmax(0,1fr)}.yb-items a:has(.th) time{display:none}.yb-items .th{width:88px;border-radius:8px}
  .yb-stuckidx a{grid-template-columns:minmax(0,1fr) 16px;gap:4px 12px}.yb-stuckidx .see{grid-column:1}.yb-stuckidx .go{grid-column:1}.yb-stuckidx svg{grid-column:2;grid-row:1 / span 2}
  .yb-hero-card .yb-read{margin-top:18px}
  .yb-foot .cols{grid-template-columns:1fr}
}