:root{
  --bg:#F5F8F9; --surface:#FFFFFF; --ink:#2E3235; --muted:#5E6B72; --line:#D5DFE4;
  --head:#333333; --halo:#B9C9D2;
  --joy:#FFE070; --sad:#B5E7EE; --mad:#8E3B91; --puzzled:#7F9BA6;
  --joy-ink:#5A4700; --sad-ink:#155660; --mad-ink:#FFFFFF; --puzzled-ink:#FFFFFF;
  --link:#7A2F7D;
  --display:"Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --body:"Source Serif 4", Georgia, "Times New Roman", serif;
  color-scheme: light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#1E2224; --surface:#272C2F; --ink:#E8EDEF; --muted:#A7B4BA; --line:#3A4246;
    --head:#E8EDEF; --halo:#55646C; --link:#E3A9E6;
    --mad:#B565B8; --puzzled:#8FA9B3; --puzzled-ink:#1E2224;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#1E2224; --surface:#272C2F; --ink:#E8EDEF; --muted:#A7B4BA; --line:#3A4246;
  --head:#E8EDEF; --halo:#55646C; --link:#E3A9E6;
  --mad:#B565B8; --puzzled:#8FA9B3; --puzzled-ink:#1E2224;
  color-scheme: dark;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 80px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1.125rem;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--link);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--mad);outline-offset:3px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 1.25rem}

/* Header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--bg);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:72px}
.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--ink)}
.brand-logo{width:52px;height:52px;background:#fff;border-radius:12px;flex:none}
.brand-name{font-family:var(--display);font-weight:800;font-size:1.3rem;letter-spacing:-.01em;line-height:1}
.brand-tag{display:block;font-family:var(--display);font-weight:500;font-size:.8rem;color:var(--muted);margin-top:.2rem;letter-spacing:0}
.nav{display:flex;gap:.25rem}
.nav a{font-family:var(--display);font-weight:500;font-size:1rem;color:var(--ink);text-decoration:none;padding:.5rem .8rem;border-radius:999px}
.nav a:hover,.nav a[aria-current="page"]{background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}
.menu-btn{display:none;font:inherit;font-family:var(--display);font-weight:500;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:.5rem 1rem;cursor:pointer}
@media (max-width:720px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;background:var(--bg);border-bottom:1px solid var(--line);padding:.5rem 1.25rem 1rem}
  .nav.open{display:flex}
  .nav a{padding:.75rem .5rem;border-radius:8px}
  .brand-tag{display:none}
}

/* Hero */
.hero{padding:4rem 0 3rem}
.hero h1{font-family:var(--display);font-weight:800;font-size:clamp(2.4rem,7vw,4.6rem);line-height:1.02;letter-spacing:-.025em;margin:0 0 1.25rem;max-width:14ch}
.hero p{max-width:38rem;font-size:1.2rem;color:var(--muted);margin:0}
.feelings{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:2rem}

/* Category chips (the memorable thing: each one borrows a puzzle piece from the logo) */
.chip{font-family:var(--display);font-weight:700;font-size:.95rem;border:0;cursor:pointer;padding:.55rem 1.05rem .55rem .9rem;color:var(--ink);background:var(--surface);box-shadow:inset 0 0 0 1px var(--line);border-radius:18px 22px 16px 24px / 20px 16px 24px 18px;display:inline-flex;align-items:center;gap:.5rem;transition:transform .15s}
.chip .dot{width:.85rem;height:.85rem;border-radius:50% 45% 55% 50%;flex:none}
.chip[aria-pressed="true"]{box-shadow:none;transform:rotate(-1.5deg)}
.chip[data-cat="all"][aria-pressed="true"]{background:var(--head);color:var(--bg)}
.chip[data-cat="exam"][aria-pressed="true"]{background:var(--joy);color:var(--joy-ink)}
.chip[data-cat="field"][aria-pressed="true"]{background:var(--sad);color:var(--sad-ink)}
.chip[data-cat="hard"][aria-pressed="true"]{background:var(--mad);color:var(--mad-ink)}
.chip[data-cat="questions"][aria-pressed="true"]{background:var(--puzzled);color:var(--puzzled-ink)}
.dot.exam{background:var(--joy)} .dot.field{background:var(--sad)} .dot.hard{background:var(--mad)} .dot.questions{background:var(--puzzled)} .dot.all{background:var(--head)}
@media (prefers-reduced-motion:reduce){.chip{transition:none}.chip[aria-pressed="true"]{transform:none}}

/* Layout */
.main-grid{max-width:44rem;padding-bottom:4rem}
@media (max-width:880px){.main-grid{grid-template-columns:1fr;gap:2.5rem}}

/* Posts */
.posts{list-style:none;margin:0;padding:0}
.post{padding:1.75rem 0;border-top:1px solid var(--line)}
.post:first-child{border-top:0;padding-top:0}
.post-meta{font-family:var(--display);font-size:.9rem;color:var(--muted);display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin-bottom:.4rem}
.post h2{font-family:var(--display);font-weight:700;font-size:1.15rem;line-height:1.15;letter-spacing:-.015em;margin:0 0 .5rem}
.post h2 a{color:var(--ink);text-decoration:none}
.post h2 a:hover{text-decoration:underline;text-decoration-thickness:2px}
.post p{margin:0 0 .6rem;color:var(--muted);max-width:40rem}
.read{font-family:var(--display);font-weight:500}
.empty{color:var(--muted);padding:2rem 0}

/* Sidebar */
.side h3{font-family:var(--display);font-weight:700;font-size:clamp(1.4rem,3.4vw,1.8rem);line-height:1.15;letter-spacing:-.015em;margin:0 0 .75rem}
.side section{margin-bottom:2.5rem}
.side p{font-size:1rem;margin:0 0 .75rem}
.path{list-style:none;margin:0;padding:0;position:relative}
.path li{position:relative;padding:0 0 1.1rem 2rem;font-size:1rem}
.path li::before{content:"";position:absolute;left:.3rem;top:.4rem;width:.9rem;height:.9rem;border-radius:50%;border:2px solid var(--halo);background:var(--bg)}
.path li.done::before{background:var(--mad);border-color:var(--mad)}
.path li.now::before{background:var(--joy);border-color:var(--joy)}
.path li:not(:last-child)::after{content:"";position:absolute;left:.72rem;top:1.4rem;bottom:.1rem;width:2px;background:var(--halo)}
.path strong{font-family:var(--display);font-weight:700;display:block;line-height:1.3}
.path span{color:var(--muted);font-size:.92rem}
.meter{height:10px;border-radius:999px;background:var(--line);overflow:hidden;margin:.4rem 0 .2rem}
.meter i{display:block;height:100%;background:var(--mad);border-radius:999px}
.side .small{font-size:.9rem;color:var(--muted)}
.btn{display:inline-block;font-family:var(--display);font-weight:700;font-size:1rem;text-decoration:none;color:var(--bg);background:var(--head);padding:.7rem 1.2rem;border-radius:999px}
.btn:hover{opacity:.9}

/* Article view */
.article{max-width:40rem;margin:0 auto;padding:3rem 0 4rem}
.back{font-family:var(--display);font-weight:500;display:inline-block;margin-bottom:2rem}
.article h1{font-family:var(--display);font-weight:800;font-size:clamp(2rem,6vw,3.2rem);line-height:1.06;letter-spacing:-.02em;margin:.5rem 0 1.5rem}
.article p{margin:0 0 1.25rem}
.article h2{font-family:var(--display);font-weight:700;font-size:1.4rem;margin:2.25rem 0 .75rem}
.article blockquote{margin:1.75rem 0;padding:1rem 1.25rem;border-left:5px solid var(--sad);background:var(--surface);font-style:italic}
.article ul{padding-left:1.25rem;margin:0 0 1.25rem}
.article li{margin-bottom:.4rem}
.note{font-size:.95rem;color:var(--muted);border-top:1px solid var(--line);padding-top:1.25rem;margin-top:2.5rem}

/* About */
.about{max-width:40rem;padding:3rem 0 4rem}
.about h1{font-family:var(--display);font-weight:800;font-size:clamp(2rem,6vw,3.2rem);line-height:1.06;letter-spacing:-.02em;margin:0 0 1.5rem}
.about p{margin:0 0 1.25rem}
.about blockquote{margin:1.75rem 0;padding:1rem 1.25rem;border-left:5px solid var(--sad);background:var(--surface);font-style:italic}
.contact-form{display:flex;flex-direction:column;gap:.35rem;max-width:32rem;margin:0 0 1.5rem}
.contact-form label{font-family:var(--display);font-weight:700;font-size:1rem;margin-top:.75rem}
.contact-form input,.contact-form textarea{font:inherit;font-size:1rem;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:.75rem .9rem;width:100%}
.contact-form textarea{resize:vertical;min-height:8rem}
.contact-form input:focus,.contact-form textarea:focus{outline:3px solid var(--mad);outline-offset:1px;border-color:transparent}
.contact-form .btn{border:0;cursor:pointer;align-self:flex-start;margin-top:1.25rem}

footer{border-top:1px solid var(--line);padding:2rem 0;font-family:var(--display);font-size:.9rem;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}
/* Home */
.home-hero{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:3rem;align-items:center;padding:4rem 0 3.5rem}
.home-hero h1{font-family:var(--display);font-weight:800;font-size:clamp(2.4rem,7vw,4.4rem);line-height:1.02;letter-spacing:-.025em;margin:0 0 1.25rem;max-width:14ch}
.home-hero p{max-width:36rem;font-size:1.2rem;color:var(--muted);margin:0}
.home-logo{display:block;width:240px;height:240px;background:#fff;border-radius:28px;transform:rotate(2deg)}
.cta{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
@media (max-width:720px){
  .home-hero{grid-template-columns:1fr;gap:2rem;padding:2.5rem 0 2.5rem}
  .home-logo{display:block;width:160px;height:160px;border-radius:20px;order:-1}
}
.home-block{padding:2.5rem 0;border-top:1px solid var(--line)}
.block-title{font-family:var(--display);font-weight:700;font-size:clamp(1.4rem,3.4vw,1.8rem);letter-spacing:-.015em;margin:0 0 1.25rem}
.latest-card{display:block;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:1.5rem;max-width:44rem}
.latest-card:hover{border-color:var(--halo)}
.latest-card h3{font-family:var(--display);font-weight:700;font-size:clamp(1.3rem,3vw,1.6rem);line-height:1.15;margin:0 0 .5rem}
.latest-card p{color:var(--muted);margin:0 0 .75rem}
.latest-card .read{color:var(--link);text-decoration:underline;text-underline-offset:.18em}
.topics{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.topic{display:flex;flex-direction:column;gap:.35rem;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);padding:1.25rem;border-radius:18px 22px 16px 24px / 20px 16px 24px 18px}
.topic:hover{border-color:var(--halo)}
.topic .dot{width:1.1rem;height:1.1rem;margin-bottom:.35rem}
.topic strong{font-family:var(--display);font-weight:700;font-size:1.15rem}
.topic span:last-child{color:var(--muted);font-size:1rem;line-height:1.5}
.home-quote{padding-bottom:4rem}
.home-quote blockquote{font-family:var(--display);font-weight:500;font-size:clamp(1.3rem,3.4vw,1.9rem);line-height:1.3;letter-spacing:-.01em;margin:0 0 1rem;max-width:36ch;padding-left:1.25rem;border-left:5px solid var(--joy)}
.home-quote p{margin:0;padding-left:1.5rem;color:var(--muted)}
.hero-blog{padding:3rem 0 2.5rem}
.hero-blog h1{font-size:clamp(2rem,6vw,3.2rem)}

[hidden]{display:none!important}