:root{
  --bg:#f6f3ec;
  --ink:#1d1d1b;
  --muted:#68635a;
  --line:#d8d0c2;
  --card:#fffdfa;
  --accent:#e4572e;
  --accent-dark:#9f2f14;
  --blue:#2457a6;
  --green:#4f7b45;
  --shadow:0 12px 34px rgba(33,28,20,.09);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;line-height:1.5}
a{color:inherit;text-decoration:none}
.site-header{max-width:1220px;margin:0 auto;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-weight:850;letter-spacing:-.035em;font-size:1.18rem}.brand-mark{width:34px;height:34px;border:1.5px solid var(--ink);border-radius:10px;display:grid;place-items:center;background:var(--accent);color:#fff;font-family:Georgia,serif;font-style:italic;box-shadow:3px 3px 0 var(--ink)}
.top-nav{display:flex;gap:8px;align-items:center}.top-nav a{padding:10px 12px;border-radius:999px;color:var(--muted);font-weight:700;font-size:.92rem}.top-nav a:hover{background:#fff;color:var(--ink)}
main{max-width:1220px;margin:0 auto;padding:8px 28px 64px}.hero{min-height:510px;display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.72fr);gap:38px;align-items:center;padding:42px 0 54px}.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:.76rem;font-weight:850;color:var(--accent-dark);margin:0 0 14px}.hero h1{font-size:clamp(3.1rem,6.8vw,6.25rem);line-height:.94;letter-spacing:-.07em;margin:0 0 22px;max-width:760px}.lead{font-size:clamp(1.02rem,1.7vw,1.18rem);color:var(--muted);max-width:630px;margin:0 0 24px}.search-panel{background:var(--card);border:1.5px solid var(--ink);border-radius:18px;padding:6px;box-shadow:4px 4px 0 var(--ink);max-width:650px}.search-panel input{width:100%;border:0;background:transparent;font:inherit;font-size:1.02rem;padding:15px 16px;outline:none;color:var(--ink)}.quick-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}.quick-links a{border:1px solid var(--line);background:#fff9ef;padding:8px 12px;border-radius:999px;color:#4a453d;font-weight:700;font-size:.9rem}.quick-links a:hover{border-color:var(--ink);background:#fff}.hero-board{position:relative;min-height:390px;border:1.5px solid var(--ink);border-radius:28px;background:linear-gradient(135deg,#fffdfa,#eee6d8);box-shadow:7px 7px 0 var(--ink);overflow:hidden}.hero-board:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(29,29,27,.12) 1px, transparent 1px);background-size:24px 24px;opacity:.26}.paper{position:absolute;background:#fff;border:1.5px solid var(--ink);box-shadow:5px 5px 0 rgba(29,29,27,.16);border-radius:18px;padding:21px}.paper-main{left:36px;right:48px;top:46px;transform:rotate(-1.5deg)}.paper-row{display:flex;justify-content:space-between;border-bottom:1px dashed #beb4a2;padding:13px 0;font-size:1rem}.paper-row:last-child{border-bottom:0}.paper-row strong{font-size:1.3rem;letter-spacing:-.035em}.mini-card{position:absolute;border:1.5px solid var(--ink);background:#fff;border-radius:15px;box-shadow:4px 4px 0 rgba(29,29,27,.18);font-weight:850}.math-card{left:38px;bottom:62px;padding:17px 20px;color:var(--blue);font-size:1.16rem;transform:rotate(2deg)}.stat-card{right:36px;bottom:46px;width:136px;height:100px;padding:14px;display:flex;align-items:end;gap:8px}.stat-card span{display:block;flex:1;background:var(--green);border:2px solid var(--ink);border-bottom-width:4px;border-radius:8px 8px 4px 4px}.stat-card span:nth-child(1){height:35%}.stat-card span:nth-child(2){height:58%;background:var(--accent)}.stat-card span:nth-child(3){height:44%;background:var(--blue)}.stat-card span:nth-child(4){height:80%;background:var(--ink)}.dot{position:absolute;border-radius:50%;border:1.5px solid var(--ink)}.one{width:22px;height:22px;right:48px;top:38px;background:var(--accent)}.two{width:14px;height:14px;left:50px;top:244px;background:var(--green)}.three{width:16px;height:16px;right:190px;bottom:150px;background:var(--blue)}
.section{padding:46px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:20px}.section-head h2,.note-section h2{font-size:clamp(1.9rem,3.4vw,3.05rem);line-height:1;letter-spacing:-.055em;margin:0}.section-head p,.note-section p{color:var(--muted);margin:0;max-width:420px}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.tool-card{background:var(--card);border:1.5px solid var(--ink);border-radius:20px;padding:22px;min-height:210px;box-shadow:4px 4px 0 rgba(29,29,27,.12);transition:.18s ease}.tool-card:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}.tool-icon{width:44px;height:44px;border-radius:14px;border:1.5px solid var(--ink);display:grid;place-items:center;background:#f7d75c;font-weight:850;margin-bottom:18px;font-size:1.3rem;line-height:1}.tool-card:nth-child(2) .tool-icon{background:#b8d6ff}.tool-card:nth-child(3) .tool-icon{background:#b7d7aa}.tool-card:nth-child(4) .tool-icon{background:#ffb099}.tool-card h3{font-size:1.12rem;line-height:1.14;margin:0 0 10px}.tool-card p{margin:0;color:var(--muted);font-size:.92rem}.split-section{display:grid;grid-template-columns:315px 1fr;gap:48px;align-items:start}.sticky-head{display:block;position:sticky;top:20px}.sticky-head p{margin-top:14px}.category-list{border-top:1.5px solid var(--ink)}.category-row{display:grid;grid-template-columns:62px 178px 1fr;gap:18px;padding:22px 0;border-bottom:1.5px solid var(--ink);align-items:center}.category-row span{font-family:Georgia,serif;font-size:1.38rem;color:var(--accent-dark);font-style:italic}.category-row strong{font-size:1.24rem;letter-spacing:-.03em}.category-row em{font-style:normal;color:var(--muted)}.category-row:hover strong{text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:5px}.note-section{background:var(--ink);color:#fff;border-radius:28px;padding:36px;display:flex;justify-content:space-between;align-items:center;gap:28px;box-shadow:7px 7px 0 var(--accent)}.note-section p{color:#e7dfd0;margin-top:14px}.button{display:inline-flex;align-items:center;justify-content:center;border:2px solid #fff;border-radius:999px;color:#fff;padding:13px 18px;font-weight:900;white-space:nowrap}.button:hover{background:#fff;color:var(--ink)}.site-footer{max-width:1220px;margin:0 auto;padding:32px 28px 44px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:28px;color:var(--muted)}.site-footer strong{color:var(--ink);font-size:1.1rem}.site-footer p{margin:.25rem 0 0}.site-footer nav{display:flex;flex-wrap:wrap;gap:14px}.site-footer a{font-weight:700}.site-footer a:hover{color:var(--ink)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.page{max-width:780px;margin:0 auto;padding:60px 24px 100px}.page h1{font-size:clamp(2.6rem,7vw,5.5rem);line-height:.9;letter-spacing:-.075em;margin:0 0 24px}.page p{font-size:1.08rem;color:var(--muted)}
@media(max-width:900px){.site-header{align-items:flex-start}.top-nav{display:none}.hero{grid-template-columns:1fr;min-height:auto;padding-top:28px}.hero-board{min-height:360px}.tool-grid{grid-template-columns:repeat(2,1fr)}.split-section{grid-template-columns:1fr;gap:20px}.sticky-head{position:static}.category-row{grid-template-columns:52px 1fr}.category-row em{grid-column:2}.note-section{display:block}.note-section .button{margin-top:24px}}
@media(max-width:560px){.site-header{padding:18px 16px}.brand{font-size:1.08rem}main{padding:0 16px 44px}.hero h1{font-size:3.25rem;letter-spacing:-.06em}.hero-board{border-radius:22px;box-shadow:5px 5px 0 var(--ink)}.paper-main{left:22px;right:24px;top:36px}.math-card{left:22px;bottom:42px}.stat-card{right:22px;bottom:28px;width:124px;height:92px}.tool-grid{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:10px}.category-row{grid-template-columns:42px 1fr;padding:22px 0}.note-section{border-radius:24px;padding:30px}.site-footer{display:block;padding-inline:16px}.site-footer nav{margin-top:20px}}

/* v0.0.3 spacing polish */
:root{
  --border:2px solid var(--ink);
}
.site-header{padding-top:26px;padding-bottom:28px}
main{padding-top:12px}
.hero{min-height:560px;grid-template-columns:minmax(0,1.04fr) minmax(390px,.78fr);gap:64px;align-items:start;padding:60px 0 78px}
.hero-copy{padding-top:4px}
.hero h1{font-size:clamp(3.5rem,6.2vw,6.55rem);line-height:1.01;letter-spacing:-.065em;margin-bottom:24px;max-width:780px}
.lead{max-width:620px;margin-bottom:28px}
.search-panel{max-width:565px;border:var(--border);border-radius:18px;box-shadow:4px 4px 0 var(--ink);padding:7px}
.search-panel input{padding:17px 18px;font-size:1rem}
.quick-links{gap:10px;margin-top:20px}.quick-links a{font-size:.95rem;padding:9px 14px;border-color:#d3c9b8}
.hero-board{margin-top:44px;min-height:370px;border:var(--border);box-shadow:6px 6px 0 var(--ink)}
.paper{border:var(--border)}.paper-main{top:44px}.mini-card{border:var(--border)}.dot{border:var(--border)}
.section{padding:66px 0}.section-head{margin-bottom:28px}.section-head-stacked{display:block}.section-head-stacked p{margin-top:10px;max-width:460px}
.tool-grid{gap:22px}.tool-card{border:var(--border);padding:28px 24px 26px;min-height:220px;border-radius:20px;box-shadow:4px 4px 0 rgba(29,29,27,.16)}.tool-icon{margin-bottom:22px;border:var(--border)}.tool-card p{font-size:.96rem;line-height:1.55}.tool-card h3{margin-bottom:12px}
.split-section{grid-template-columns:360px 1fr;gap:58px;padding-top:64px;padding-bottom:68px}.sticky-head p{max-width:300px;line-height:1.6}.category-list{border-top:var(--border)}.category-row{grid-template-columns:64px 190px 1fr;padding:27px 0;border-bottom:var(--border)}.category-row em{line-height:1.55}.category-row strong{font-size:1.22rem}
.note-section{margin-top:6px;padding:42px 38px;border-radius:28px;box-shadow:7px 7px 0 var(--accent)}.note-section h2{font-size:clamp(1.8rem,3vw,2.55rem)}.note-section p{max-width:650px;line-height:1.58}.button{padding:15px 22px;font-size:1rem}
.site-footer{padding:52px 28px 70px;align-items:start}.footer-brand{min-width:230px}.footer-links{display:grid;grid-template-columns:repeat(4,minmax(110px,1fr));gap:34px;flex:1;max-width:680px}.footer-links div{display:grid;gap:8px}.site-footer .footer-links strong{font-size:.88rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink)}.footer-links a{font-weight:700;color:var(--muted)}.footer-links a:hover{color:var(--ink)}
@media(max-width:900px){.hero{gap:28px;padding-top:32px;align-items:center}.hero-board{margin-top:0}.split-section{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,minmax(120px,1fr));margin-top:28px;max-width:none}.site-footer{display:block}}
@media(max-width:560px){.hero h1{font-size:3.15rem;line-height:1.02}.hero{padding-bottom:52px}.search-panel{max-width:none}.quick-links a{font-size:.88rem}.section{padding:48px 0}.tool-card{min-height:auto}.category-row{grid-template-columns:46px 1fr;padding:24px 0}.category-row em{grid-column:2}.footer-links{grid-template-columns:1fr 1fr;gap:24px}.site-footer{padding-bottom:54px}}


/* v0.0.4 compact directory pass */
.site-header{padding-top:20px;padding-bottom:20px}
main{padding-top:0;padding-bottom:42px}
.hero{min-height:0;grid-template-columns:minmax(0,1.05fr) minmax(330px,.68fr);gap:54px;align-items:center;padding:34px 0 48px}
.hero-copy{padding-top:0}.eyebrow{margin-bottom:10px}.hero h1{font-size:clamp(3rem,5.25vw,5.45rem);line-height:.96;margin-bottom:18px;max-width:720px}.lead{margin-bottom:20px;max-width:610px}.search-panel{max-width:540px}.search-panel input{padding:14px 16px}.quick-links{margin-top:14px;gap:8px}.quick-links a{padding:7px 12px;font-size:.88rem}.hero-board{margin-top:0;min-height:300px;border-radius:24px;box-shadow:5px 5px 0 var(--ink)}.paper-main{left:30px;right:38px;top:34px;padding:17px}.paper-row{padding:9px 0}.paper-row strong{font-size:1.1rem}.math-card{left:30px;bottom:48px;padding:12px 15px;font-size:.98rem}.stat-card{right:30px;bottom:36px;width:116px;height:82px;padding:12px}.one{right:42px;top:32px}.two{left:40px;top:196px}.three{right:158px;bottom:124px}
.section{padding:38px 0}.section-head{margin-bottom:18px}.section-head h2,.note-section h2{font-size:clamp(1.75rem,2.8vw,2.65rem)}.section-head-stacked p{margin-top:6px}.tool-grid{gap:16px}.tool-card{padding:21px 20px;min-height:178px;box-shadow:3px 3px 0 rgba(29,29,27,.16)}.tool-icon{width:38px;height:38px;margin-bottom:16px;border-radius:12px;font-size:1.1rem}.tool-card h3{font-size:1.02rem;margin-bottom:8px}.tool-card p{font-size:.88rem;line-height:1.45}.split-section{grid-template-columns:330px 1fr;gap:46px;padding-top:42px;padding-bottom:42px}.sticky-head p{margin-top:10px;max-width:280px}.category-row{grid-template-columns:56px 170px 1fr;padding:18px 0}.category-row span{font-size:1.18rem}.category-row strong{font-size:1.1rem}.category-row em{font-size:.92rem;line-height:1.4}.compact-note{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:2px solid var(--ink);border-radius:22px;background:var(--card);padding:0;overflow:hidden;box-shadow:4px 4px 0 var(--accent);margin-top:18px}.compact-note div{padding:22px 24px;border-right:2px solid var(--ink)}.compact-note div:last-child{border-right:0}.compact-note strong{display:block;font-size:1.08rem;letter-spacing:-.03em;margin-bottom:5px}.compact-note span{display:block;color:var(--muted);font-size:.92rem;line-height:1.4}.site-footer{margin-top:20px;padding-top:34px;padding-bottom:48px}.footer-links{gap:26px}.footer-links div{gap:6px}.site-footer strong{font-size:1rem}.site-footer p,.footer-links a{font-size:.92rem}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding:28px 0 36px}.hero-board{min-height:310px;max-width:520px}.compact-note{grid-template-columns:1fr}.compact-note div{border-right:0;border-bottom:2px solid var(--ink)}.compact-note div:last-child{border-bottom:0}}
@media(max-width:560px){.hero h1{font-size:2.85rem}.hero{padding-bottom:32px}.section{padding:34px 0}.split-section{gap:18px}.category-row{padding:18px 0}.compact-note div{padding:19px 20px}.site-footer{margin-top:8px;padding-top:28px}}