/* Shared styles for the writing pages (blog index + posts). The home and extension pages keep their
   own inline CSS; this file mirrors their tokens and components (dark hero band, cards, footer) so
   every page feels like one site. */
:root{
  --accent:#4457d6; --accent2:#7b5cff;
  --dark:#0d0e13; --white:#fff; --alt:#f7f7f8; --line:#ececef;
  --ink:#15171d; --muted:#5c616b; --muted2:#8a8f98;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --display:"Space Grotesk",var(--sans);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --grad:linear-gradient(140deg,var(--accent),var(--accent2));
  --shadow:0 1px 3px rgba(0,0,0,.03);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--white);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
a{color:inherit;text-decoration:none;}
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.02em;margin:0;}
p{margin:0;}
svg{display:block;}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px;}
.eyebrow{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);}
.mark{border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(68,87,214,.35), inset 0 0 0 1px rgba(255,255,255,.12);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font-family:var(--sans);font-size:15px;font-weight:600;border-radius:12px;padding:13px 22px;white-space:nowrap;transition:transform .12s ease, box-shadow .12s ease, background .12s ease;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 26px rgba(68,87,214,.42);}
.btn-primary:hover{box-shadow:0 10px 32px rgba(68,87,214,.55);}
.btn-light{background:#fff;color:var(--ink);box-shadow:0 2px 10px rgba(0,0,0,.14);}
.btn-light:hover{background:#f4f5f7;}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--alt);}

/* ---------------- NAV + HERO BAND (same as the home page) ---------------- */
nav{position:absolute;top:0;left:0;right:0;z-index:20;}
nav .wrap{display:flex;align-items:center;gap:20px;padding-top:22px;padding-bottom:22px;}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:600;font-size:19px;color:#fff;letter-spacing:-.01em;}
.brand .mark{width:34px;height:34px;}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:30px;}
.nav-links a{color:rgba(255,255,255,.72);font-size:14.5px;transition:color .12s ease;white-space:nowrap;}
.nav-links a:hover,.nav-links a.cur{color:#fff;}
.nav-links a.lang-switch{font-family:var(--mono);font-size:12px;letter-spacing:.08em;border:1px solid rgba(255,255,255,.22);border-radius:7px;padding:4px 8px;}
.nav-signin{color:#fff;font-size:14.5px;font-weight:600;padding:10px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.28);transition:background .12s ease,border-color .12s ease;white-space:nowrap;}
.nav-signin:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);}
.nav-links + .nav-signin{margin-left:30px;}
.nav-cta{margin-left:8px;font-size:14.5px;padding:10px 16px;border-radius:11px;}

.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:52px 52px;mask-image:radial-gradient(90% 70% at 50% 0%,#000,transparent 75%);-webkit-mask-image:radial-gradient(90% 70% at 50% 0%,#000,transparent 75%);pointer-events:none;}
.hero::after{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:1100px;height:680px;background:radial-gradient(closest-side,rgba(96,86,235,.42),transparent 68%);filter:blur(20px);pointer-events:none;}
.hero > .wrap{position:relative;z-index:1;padding-top:140px;padding-bottom:72px;max-width:860px;}
.hero .eyebrow{color:#a9b3ff;}
.hero h1{font-size:clamp(34px,4.8vw,54px);line-height:1.06;letter-spacing:-.03em;margin:16px 0 0;}
.hero .lede{color:#b9bed0;font-size:clamp(16px,1.7vw,19px);line-height:1.6;margin:18px 0 0;max-width:40em;}
.hero .meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.55);margin-top:26px;}
.hero .meta .jp{width:26px;height:26px;border-radius:50%;background:var(--grad);display:inline-flex;align-items:center;justify-content:center;font:600 11px var(--display);color:#fff;}
.hero .meta .n{color:#fff;font-family:var(--sans);font-weight:600;font-size:13.5px;}

/* ---------------- ARTICLE ---------------- */
.article{max-width:720px;margin:0 auto;padding:56px 24px 40px;font-size:17px;line-height:1.68;}
.article a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(68,87,214,.35);text-underline-offset:2px;}
.article a:hover{text-decoration-color:var(--accent);}
.article h2{font-size:27px;margin:44px 0 12px;}
.article h3{font-size:20px;margin:30px 0 8px;}
.article p{margin:0 0 17px;}
.article ul,.article ol{margin:0 0 18px;padding-left:24px;}
.article li{margin:6px 0;}
.article blockquote{margin:24px 0;padding:16px 22px;border-left:3px solid var(--accent);background:var(--alt);border-radius:0 12px 12px 0;color:var(--ink);}
.article blockquote p{margin:0;}
.article code{font-family:var(--mono);font-size:.9em;background:var(--alt);padding:1px 6px;border-radius:5px;}
.article pre{background:var(--dark);color:#e9eaf0;padding:16px 18px;border-radius:12px;overflow-x:auto;font:13.5px/1.55 var(--mono);margin:0 0 18px;}
.article pre code{background:none;padding:0;color:inherit;font-size:inherit;}
.article hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;display:block;overflow-x:auto;}
.article th,.article td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top;}
.article th{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted2);}
.article img{max-width:100%;border-radius:12px;border:1px solid var(--line);}
.author{display:flex;gap:14px;align-items:center;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);}
.author .jp{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font:600 14px var(--display);flex:0 0 auto;}
.author .n{font-weight:600;}
.author .r{font-family:var(--mono);font-size:12px;color:var(--muted2);}
.author .r a{color:var(--muted);text-decoration:none;}

/* Call to action inside a post: a card, like the home page cards */
.article .cta{margin:44px 0 0;padding:26px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow);}
.article .cta .glyph{width:40px;height:40px;border-radius:11px;background:rgba(31,138,76,.11);color:#1f8a4c;display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;}
.article .cta h3{margin:0 0 6px;font-size:20px;}
.article .cta p{margin:0 0 18px;color:var(--muted);font-size:15px;}
.article .cta .row{display:flex;gap:10px;flex-wrap:wrap;}

/* ---------------- INDEX: post cards ---------------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:56px 0 24px;}
.post{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow);transition:box-shadow .12s ease,transform .12s ease;}
.post:hover{box-shadow:0 10px 30px rgba(0,0,0,.07);transform:translateY(-2px);}
.post .top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px;}
.post .eyebrow{font-size:11.5px;letter-spacing:.1em;}
.post .lang{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted2);border:1px solid var(--line);border-radius:999px;padding:3px 8px;}
.post h2{font-size:20px;line-height:1.28;letter-spacing:-.01em;}
.post p{color:var(--muted);font-size:14.5px;line-height:1.58;margin-top:10px;flex:1;}
.post .meta{font-family:var(--mono);font-size:12px;color:var(--muted2);margin-top:18px;display:flex;justify-content:space-between;gap:10px;}
.post .meta .read{color:var(--accent);font-family:var(--sans);font-weight:600;font-size:13.5px;white-space:nowrap;}

/* Closing band on the index (same as the home page's final section) */
.final{text-align:center;padding:72px 0 104px;}
.final .mark{width:56px;height:56px;margin:0 auto 26px;}
.final h2{font-size:clamp(30px,4.4vw,46px);line-height:1.08;}
.final p{color:var(--muted);font-size:17px;margin:18px auto 30px;max-width:44ch;}
.final .actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}

/* ---------------- RELEASE NOTES (/release-notes) ---------------- */
.rn{max-width:860px;margin:0 auto;padding:40px 24px 8px;}
.rn-day{display:grid;grid-template-columns:168px 1fr;gap:32px;padding:30px 0;border-top:1px solid var(--line);}
.rn-day:first-child{border-top:0;}
.rn-date{position:sticky;top:24px;align-self:start;font-family:var(--mono);font-size:12.5px;font-weight:500;letter-spacing:.03em;color:var(--muted);padding-top:3px;}
.rn-date a:hover{color:var(--accent);}
.rn-note + .rn-note{margin-top:26px;}
.rn-kind{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:3px 9px;}
.rn-new{background:rgba(68,87,214,.1);color:#3546c4;}
.rn-improved{background:rgba(123,92,255,.11);color:#5a3fd6;}
.rn-changed{background:var(--alt);color:var(--muted);box-shadow:inset 0 0 0 1px var(--line);}
.rn-fixed{background:rgba(31,138,76,.1);color:#1a7742;}
.rn-note h3{font-size:19px;line-height:1.3;letter-spacing:-.01em;margin:10px 0 6px;}
.rn-note p{color:var(--muted);font-size:15.5px;line-height:1.62;}
.rn-note p + p{margin-top:8px;}
.rn-note a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(68,87,214,.35);text-underline-offset:2px;}
.rn-note a:hover{text-decoration-color:var(--accent);}

/* ---------------- FOOTER (same as the home page) ---------------- */
footer{border-top:1px solid var(--line);}
footer .wrap{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:30px;padding-bottom:30px;color:var(--muted2);font-size:13.5px;}
footer .brand{color:var(--ink);font-size:16px;}
footer .brand .mark{width:28px;height:28px;border-radius:9px;}
footer .sep{color:var(--line);}
footer .right{margin-left:auto;}

/* ---------------- Responsive ---------------- */
@media (max-width:920px){
  .nav-links{gap:18px;}
  .posts{grid-template-columns:1fr 1fr;}
  .hero > .wrap{padding-top:124px;}
}
@media (max-width:680px){
  .nav-links{display:none;}
  .nav-signin,.nav-links + .nav-signin{margin-left:auto;}
  .nav-cta{margin-left:0;padding:11px 16px;font-size:14px;}
  .posts{grid-template-columns:1fr;padding-top:40px;}
  .article{padding:40px 20px 32px;font-size:16.5px;}
  .rn{padding:24px 20px 0;}
  .rn-day{grid-template-columns:1fr;gap:12px;padding:24px 0;}
  .rn-date{position:static;padding-top:0;}
  .final{padding:56px 0 80px;}
  footer .right{margin-left:0;width:100%;}
}
@media (max-width:640px){
  .wrap{padding-left:20px;padding-right:20px;}
  .hero > .wrap{padding-top:112px;padding-bottom:56px;}
  .hero h1{font-size:31px;}
  .final h2{font-size:30px;}
}
@media (max-width:480px){
  .brand .word{display:none;}
  .nav-cta{padding:10px 12px;font-size:13.5px;}
  .nav-signin{padding:9px 11px;font-size:13.5px;}
}