:root{
  --ink:#1D2433;--muted:#5B6474;--paper:#F8FAFC;--white:#FFFFFF;--grid:#E6EAF1;--rule:#DCE1EA;
  --pen:#4B2FB8;--pen-dk:#34208A;--hi-y:#FDE047;--hi-p:#F9A8D4;--hi-m:#86EFAC;--hi-b:#93C5FD;--hi-o:#FDBA74;--hi-v:#C4B5FD;
  --red:#C2283B;
  --head:"Sora",system-ui,sans-serif;--text:"Atkinson Hyperlegible",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);font:400 18px/1.7 var(--text);
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px}
img,svg{max-width:100%;height:auto}
a{color:var(--pen);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{color:var(--pen-dk);background:linear-gradient(transparent 60%,var(--hi-y) 60%)}
:focus-visible{outline:3px solid var(--pen);outline-offset:2px}
.sp-skip{position:absolute;left:-999px;background:var(--hi-y);padding:8px 12px;z-index:20}
.sp-skip:focus{left:8px;top:8px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

.sp-notice{margin:0;padding:8px 20px;background:var(--hi-y);color:var(--ink);font-size:14.5px;text-align:center;line-height:1.45}
.sp-head{background:var(--white);border-bottom:2px solid var(--ink);position:sticky;top:0;z-index:10}
.sp-head-in{max-width:1200px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:20px}
.sp-brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font:700 19px/1.1 var(--head);margin-right:auto}
.sp-brand:hover{background:none;color:var(--ink)}
.sp-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:2px}
.sp-nav a{display:block;padding:6px 10px;border-radius:8px;color:var(--ink);text-decoration:none;font:600 15px var(--head)}
.sp-nav a:hover{background:var(--hi-v)}
.sp-nav a[aria-current]{background:var(--ink);color:#fff}
.sp-menu-btn{display:none;background:var(--pen);color:#fff;border:0;border-radius:10px;font:600 15px var(--head);padding:8px 14px;cursor:pointer}

/* hero: a week planner */
.sp-hero{max-width:1200px;margin:0 auto;padding:42px 20px 28px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:36px;align-items:center}
.sp-hero h1{font:800 clamp(34px,4.8vw,58px)/1.05 var(--head);margin:0 0 16px;letter-spacing:-.02em}
.sp-hero p{font-size:19.5px;color:var(--muted);margin:0;max-width:30em}
.sp-week{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;background:var(--white);border:2px solid var(--ink);border-radius:18px;padding:12px;box-shadow:8px 8px 0 var(--ink)}
.sp-slot{display:flex;flex-direction:column;gap:2px;min-height:118px;padding:12px 14px;border-radius:12px;text-decoration:none;color:var(--ink);border:1.5px solid rgba(29,36,51,.15);transition:transform .15s}
.sp-slot:hover{transform:translateY(-2px);background-image:none;color:var(--ink)}
.sp-slot small{font:600 12.5px var(--head);opacity:.75}
.sp-slot b{font:700 18px/1.2 var(--head)}
.sp-slot span{font-size:14.5px;line-height:1.35;opacity:.85}
.sp-c1{background:#FEF9C3}.sp-c2{background:#FCE7F3}.sp-c3{background:#DCFCE7}.sp-c4{background:#DBEAFE}.sp-c5{background:#FFEDD5}.sp-c6{background:#EDE9FE}
@media (prefers-reduced-motion:reduce){.sp-slot{transition:none}}

/* page head */
.sp-inner .sp-pagehead{max-width:1200px;margin:0 auto;padding:28px 20px 6px}
.sp-pagehead h1{font:800 clamp(28px,4vw,46px)/1.1 var(--head);margin:8px 0 0;letter-spacing:-.02em;max-width:21em}
.sp-crumbs{font-size:15px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px}
.sp-crumbs a{color:var(--muted)}

/* body as a notebook sheet */
.sp-body{max-width:1200px;margin:0 auto;padding:12px 20px 70px}
.sp-wrap{display:grid;grid-template-columns:minmax(0,790px) 290px;column-gap:40px;align-items:start}
.sp-wrap>.sp-sheet{grid-column:1;grid-row:1;min-width:0}
.sp-sheet{min-width:0;max-width:100%}
.sp-body section>h2{max-width:100%}
.sp-wrap>.sp-toc{grid-column:2;grid-row:1;position:sticky;top:84px}
.sp-sheet{background:var(--white);border:2px solid var(--ink);border-radius:18px;padding:34px clamp(18px,4vw,48px) 30px}
.sp-plain{display:block;max-width:820px}
.sp-lead p:first-child{font-size:20.5px;line-height:1.55}
.sp-body h2{font:700 27px/1.25 var(--head);margin:46px 0 12px;letter-spacing:-.01em;display:inline;background:linear-gradient(transparent 62%,var(--hi-y) 62%);box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:0 4px}
.sp-body section>h2{display:inline-block;margin-top:44px}
.sp-body h3{font:700 19.5px/1.3 var(--head);margin:26px 0 6px}
.sp-body section{scroll-margin-top:84px}
.sp-body li{margin:4px 0}

.sp-toc{background:var(--white);border:2px solid var(--ink);border-radius:16px;padding:16px 18px;font-size:15.5px}
.sp-toc p{margin:0 0 6px;font:700 16px var(--head)}
.sp-toc ul{list-style:none;margin:0;padding:0}
.sp-toc a{display:block;padding:5px 0 5px 22px;color:var(--ink);text-decoration:none;line-height:1.35;position:relative}
.sp-toc a::before{content:"";position:absolute;left:0;top:10px;width:12px;height:12px;border:2px solid var(--ink);border-radius:3px}
.sp-toc a:hover,.sp-toc a.is-on{background:none;color:var(--pen)}
.sp-toc a.is-on::before{background:var(--hi-m)}

.sp-quick{margin:24px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.sp-quick div{padding:12px 16px;border-radius:12px;border:1.5px solid rgba(29,36,51,.18)}
.sp-quick div:nth-child(6n+1){background:#FEF9C3}.sp-quick div:nth-child(6n+2){background:#DBEAFE}.sp-quick div:nth-child(6n+3){background:#DCFCE7}
.sp-quick div:nth-child(6n+4){background:#FCE7F3}.sp-quick div:nth-child(6n+5){background:#FFEDD5}.sp-quick div:nth-child(6n+6){background:#EDE9FE}
.sp-quick dt{font-size:14px;color:var(--muted)}
.sp-quick dd{margin:2px 0 0;font:700 17px/1.3 var(--head)}

.sp-note,.sp-tip,.sp-warn{border-radius:12px;padding:14px 18px;margin:20px 0;border:2px solid var(--ink)}
.sp-note{background:#EDE9FE}
.sp-tip{background:#DCFCE7}
.sp-warn{background:#FEE2E2;border-color:var(--red)}
.sp-note p,.sp-tip p,.sp-warn p{margin:0}
.sp-steps ol{counter-reset:s;list-style:none;padding:0}
.sp-steps li{counter-increment:s;position:relative;padding:2px 0 2px 46px;margin:12px 0}
.sp-steps li::before{content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;border:2px solid var(--ink);background:var(--hi-y);font:700 15px/28px var(--head);text-align:center}

.sp-tablewrap{overflow-x:auto;margin:14px 0 26px;border:2px solid var(--ink);border-radius:12px;background:var(--white)}
.sp-body table{border-collapse:collapse;width:100%;font-size:16px}
.sp-body th{text-align:left;padding:10px 14px;background:var(--ink);color:#fff;font:600 15px var(--head);white-space:nowrap}
.sp-body td{padding:9px 14px;border-top:1px solid var(--rule);vertical-align:top}
.sp-body tbody tr:nth-child(even) td{background:#F8FAFC}

.sp-faq details{border-bottom:1.5px dashed var(--rule)}
.sp-faq summary{cursor:pointer;font-weight:700;padding:13px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}
.sp-faq summary::-webkit-details-marker{display:none}
.sp-faq summary::after{content:"";flex:none;width:16px;height:16px;border:2px solid var(--ink);border-radius:4px;margin-top:5px}
.sp-faq details[open] summary::after{background:var(--hi-m)}
.sp-faq p{margin:0 0 14px;color:var(--muted)}

.sp-related ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.sp-related a{display:block;padding:12px 16px;border:2px solid var(--ink);border-radius:12px;text-decoration:none;color:var(--ink);font:600 16px/1.3 var(--head);height:100%;background:var(--white)}
.sp-related a:hover{background:var(--hi-v)}
.sp-guides ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.sp-guides a{display:block;height:100%;padding:14px 16px;border:1.5px solid rgba(29,36,51,.2);border-radius:12px;text-decoration:none;color:var(--ink);background:var(--white)}
.sp-guides a:hover{border-color:var(--ink);background:#FEF9C3}
.sp-guides strong{display:block;font:700 17px/1.25 var(--head);margin-bottom:4px}
.sp-guides span{font-size:15px;color:var(--muted);line-height:1.45}
.sp-sources{font-size:14.5px;color:var(--muted)}
.sp-sources a{color:var(--muted);word-break:break-word}
.sp-updated{font-size:14px;color:var(--muted);margin-top:30px}

/* tools */
.sp-tool{margin:8px 0 30px;background:var(--white);border:2px solid var(--ink);border-radius:18px;box-shadow:6px 6px 0 var(--ink);overflow:hidden}
.sp-tool-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;padding:14px 18px;background:#EDE9FE;border-bottom:2px solid var(--ink)}
.sp-tool-head b{font:700 18px var(--head)}
.sp-tool-body{padding:16px 18px}
.sp-tool label{font-weight:700;font-size:15px}
.sp-tool input,.sp-tool select{font:400 17px var(--text);padding:8px 10px;border:1.5px solid #B8C0CC;border-radius:8px;background:#fff;color:var(--ink);width:100%}
.sp-rows{display:grid;gap:8px;margin:8px 0}
.sp-row{display:grid;grid-template-columns:1.6fr .8fr 1fr auto;gap:8px;align-items:end}
.sp-row label{display:grid;gap:3px;font-size:13.5px}
.sp-tool button{font:600 15px var(--head);padding:8px 14px;border-radius:10px;border:2px solid var(--ink);background:var(--white);color:var(--ink);cursor:pointer}
.sp-tool button:hover{background:var(--hi-y)}
.sp-tool .sp-primary{background:var(--pen);color:#fff;border-color:var(--pen)}
.sp-tool .sp-primary:hover{background:var(--pen-dk)}
.sp-x{padding:8px 11px!important}
.sp-out{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin-top:14px}
.sp-out div{padding:12px 14px;border-radius:12px;background:#FEF9C3;border:1.5px solid rgba(29,36,51,.2)}
.sp-out div:nth-child(2){background:#DCFCE7}.sp-out div:nth-child(3){background:#DBEAFE}
.sp-out span{display:block;font-size:13.5px;color:var(--muted)}
.sp-out strong{font:800 28px/1.1 var(--head)}
.sp-msg{font-size:14px;color:var(--muted);margin:10px 0 0}
.sp-grid2{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.sp-grid2 label{display:grid;gap:4px}
.sp-tabs{display:flex;gap:6px}
.sp-tabs button[aria-selected="true"]{background:var(--ink);color:#fff}

/* blog */
.sp-bloglist,.sp-single{max-width:1200px;margin:0 auto}
.sp-posts{list-style:none;margin:0;padding:10px 20px;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.sp-post{background:var(--white);border:2px solid var(--ink);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.sp-post img{aspect-ratio:16/9;object-fit:cover;width:100%}
.sp-post>div{padding:14px 18px}
.sp-post h2{font:700 18px/1.3 var(--head);margin:0 0 4px;background:none;display:block;padding:0}
.sp-post h2 a{color:var(--ink);text-decoration:none}
.sp-post-date{font-size:13.5px;color:var(--muted);margin:0}
.sp-pager{padding:20px 20px 60px;display:flex;flex-wrap:wrap;gap:6px}
.sp-pager .page-numbers{padding:6px 12px;border:2px solid var(--ink);border-radius:8px;text-decoration:none;background:#fff}
.sp-pager .current{background:var(--ink);color:#fff}
.sp-postbody{max-width:820px;background:var(--white);border:2px solid var(--ink);border-radius:18px;padding:28px clamp(18px,4vw,46px)}
.sp-more{max-width:820px;padding:0 20px 60px}

.sp-foot{background:var(--ink);color:#C9D0DC;font-size:15.5px}
.sp-foot-in{max-width:1200px;margin:0 auto;padding:44px 20px 20px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
.sp-foot-brand{display:flex;gap:14px;align-items:flex-start}
.sp-foot-brand strong{font:700 18px var(--head);color:#fff}
.sp-foot h2{font:700 15px var(--head);color:var(--hi-y);margin:0 0 8px}
.sp-foot ul{list-style:none;margin:0;padding:0}
.sp-foot a{color:#EEF1F6;text-decoration:none;line-height:1.95}
.sp-foot a:hover{color:var(--hi-y);background:none}
.sp-copy{max-width:1200px;margin:0 auto;padding:14px 20px 26px;font-size:13.5px;border-top:1px solid #343C4E}

@media (max-width:1000px){
  .sp-hero{grid-template-columns:1fr}
  .sp-wrap{display:flex;flex-direction:column}
  .sp-wrap>.sp-toc{order:-1;position:static;margin:0 0 18px}
}
@media (max-width:860px){
  .sp-menu-btn{display:block}
  .sp-head-in{flex-wrap:wrap;gap:10px}
  .sp-nav{display:none;width:100%}
  .sp-nav.is-open{display:block}
  .sp-nav ul{flex-direction:column}
  .sp-foot-in{grid-template-columns:1fr}
}
@media (max-width:600px){
  body{font-size:17px}
  .sp-head-in,.sp-hero,.sp-body,.sp-inner .sp-pagehead{padding-left:16px;padding-right:16px}
  .sp-brand{font-size:16px}
  .sp-brand img{width:32px;height:32px}
  .sp-notice{font-size:13px;padding:7px 14px}
  .sp-week{grid-template-columns:1fr 1fr;box-shadow:5px 5px 0 var(--ink)}
  .sp-slot{min-height:104px}
  .sp-sheet{border-radius:14px;padding:24px 16px}
  .sp-row{grid-template-columns:1fr 1fr}
  .sp-grid2{grid-template-columns:1fr}
  .sp-body h2{font-size:22px}
}