@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@500;700;800&family=Noto+Sans+JP:wght@400;600;700;900&display=swap');
:root{--accent:#6f9f82;--pale:#eef6f0;--ink:#24332c;--muted:#6d7872;--line:#dfe6e2}*{box-sizing:border-box}body{margin:0;background:#f8f9f7;color:var(--ink);font-family:'DM Sans','Noto Sans JP',sans-serif}.materials-head{position:sticky;top:0;z-index:20;background:#ffffffed;backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:15px max(18px,calc((100% - 1180px)/2));display:flex;align-items:center;gap:20px}.materials-brand{text-decoration:none;font-size:22px;font-weight:900}.materials-brand em{font-style:normal;color:var(--accent)}.materials-head nav{margin-left:auto;display:flex;gap:8px}.materials-head nav a{text-decoration:none;padding:9px 11px;border-radius:10px;font-size:11px;font-weight:800}.materials-head nav a:hover{background:var(--pale)}.materials-hero{padding:75px max(18px,calc((100% - 1180px)/2)) 48px;background:linear-gradient(130deg,var(--pale),#fff)}.materials-hero small{color:var(--accent);font-weight:900;letter-spacing:.16em}.materials-hero h1{font-size:clamp(40px,7vw,75px);letter-spacing:-.065em;margin:13px 0}.materials-hero p{color:var(--muted);line-height:1.9}.materials-search{display:flex;max-width:760px;margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:6px;box-shadow:0 15px 40px #263d3212}.materials-search input{flex:1;border:0;outline:0;padding:14px;font:15px inherit}.materials-search button{border:0;background:var(--accent);color:#fff;border-radius:12px;padding:0 20px;font-weight:800}.materials-layout{max-width:1180px;margin:0 auto;padding:38px 18px 100px;display:grid;grid-template-columns:240px 1fr;gap:34px}.materials-side{position:sticky;top:85px;align-self:start}.materials-side h2{font-size:13px}.materials-courses,.materials-cats{display:flex;flex-direction:column;gap:5px}.materials-side button{border:0;text-align:left;background:transparent;border-radius:10px;padding:9px 11px;color:#66716b;font:700 11px inherit;cursor:pointer}.materials-side button.active,.materials-side button:hover{background:var(--pale);color:var(--ink)}.materials-side button span{float:right;color:#9aa49f}.materials-main-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}.materials-main-head h2{margin:0;font-size:27px}.materials-main-head p{margin:0;color:var(--muted);font-size:11px}.materials-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.material-card{border:1px solid var(--line);background:#fff;border-radius:17px;padding:20px;text-align:left;cursor:pointer;transition:.15s}.material-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 12px 30px #263d3212}.material-card small{color:var(--accent);font-weight:800}.material-card h3{margin:7px 0;font-size:17px}.material-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.materials-more{display:block;margin:24px auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:13px 30px;font-weight:800;cursor:pointer}.material-modal{position:fixed;inset:0;z-index:100;background:#17251f70;backdrop-filter:blur(5px);display:none;place-items:center;padding:18px}.material-modal.open{display:grid}.material-dialog{width:min(720px,100%);max-height:88vh;overflow:auto;background:#fff;border-radius:24px;padding:30px;position:relative}.material-close{position:absolute;right:18px;top:18px;border:0;border-radius:50%;width:38px;height:38px;font-size:21px}.material-dialog small{color:var(--accent);font-weight:900}.material-dialog h2{font-size:30px;margin:10px 45px 20px 0}.material-block{background:#f7f9f7;border-radius:15px;padding:17px;margin-top:12px}.material-block b{display:block;font-size:11px;color:var(--accent);margin-bottom:7px}.material-block p{margin:0;line-height:1.8;font-size:13px;white-space:pre-wrap}.material-options{margin:0;padding-left:22px;line-height:1.9;font-size:12px}.materials-empty{text-align:center;padding:70px 20px;color:var(--muted)}
@media(max-width:760px){.materials-head{flex-wrap:wrap}.materials-head nav{width:100%;margin-left:0;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.materials-head nav::-webkit-scrollbar{display:none}.materials-head nav a{display:block!important;flex:0 0 auto;white-space:nowrap}.materials-layout{grid-template-columns:1fr}.materials-side{position:static}.materials-courses,.materials-cats{flex-direction:row;overflow:auto}.materials-side button{flex:none;background:#fff;border:1px solid var(--line)}.materials-grid{grid-template-columns:1fr}.material-dialog{padding:25px 20px}}
.materials-brand{color:var(--ink)}.materials-brand .brand-q{color:#ff6825}.materials-brand em{color:var(--ink);font-size:.72em;margin-left:.18em;letter-spacing:.02em}