/* Dars + — a quiet study journal. Shared by every page, without web fonts. */
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body{font:16px/1.8 'Segoe UI',Arial,sans-serif}
header,main,footer{max-width:1220px;padding-inline:36px}
header{min-height:100px;gap:24px;border-bottom:1px solid var(--ink)}
header nav{gap:18px;font-size:14px}
header nav a{font-weight:500;border-bottom:2px solid transparent}
header nav a:hover,header nav a[aria-current]{border-color:var(--amber);color:var(--ink)}
header>a:last-child:not(.brand){border:0;border-inline-start:1px solid var(--line);border-radius:0;background:transparent;padding:4px 0;padding-inline-start:18px}
.brand{gap:4px}.brand-name{font:700 38px/1 Georgia,'Times New Roman',serif;letter-spacing:-2px;color:var(--ink)}
.brand-plus{display:inline;width:auto;height:auto;border:0;border-radius:0;background:none;color:var(--amber);box-shadow:none;transform:none;font:400 36px/1 Georgia,serif;align-self:flex-start}
.brand:hover .brand-plus{transform:none;box-shadow:none}
h1,h2,h3{font-family:Georgia,'Times New Roman',serif;font-weight:500;color:var(--ink)}
h1{font-size:clamp(38px,4.8vw,64px);letter-spacing:-1.7px;line-height:1.12}
h2{font-size:31px;letter-spacing:-.5px}h3{font-size:23px}
.eyebrow{color:var(--amber);font-size:11px;letter-spacing:1.8px;font-weight:700}
.hero{padding:64px 0;gap:72px;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}
.hero p{max-width:570px}.hero .panel{transform:none;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--amber);padding:32px;box-shadow:none}
.hero .panel h2{font-size:27px}.hero .large{font:500 46px/1.5 Georgia,serif;color:var(--forest);border-block:1px solid var(--line);padding-block:12px;margin-block:20px}
button,.button{border-radius:3px;font-size:14px;padding:11px 19px;font-weight:600;transition:background .15s}
.secondary{background:transparent;border-color:var(--line)}.secondary:hover{background:var(--sage)}
.panel,.card,.lesson-content,.blog-prose{box-shadow:none;border-radius:3px}
.card{background:transparent;border:0;border-top:1px solid var(--ink);padding:24px 0;border-radius:0;transition:border-color .15s}
.card:hover,.lesson-card:hover{transform:none;border-color:var(--amber)}.card h3{font-size:25px}
.num{color:var(--amber);font-family:Georgia,serif;font-size:17px}
.tag{border:0;border-radius:0;background:var(--sage);color:var(--forest);padding:4px 9px;font-size:11px;letter-spacing:.3px}
.note{background:transparent;border-inline-start:2px solid var(--amber);border-radius:0;padding:8px 18px;color:var(--muted)}
[dir=rtl] .note{border-radius:0}
input,select{border-color:#999c9f;border-radius:3px}details,.result{border-radius:3px}
.subject-row{border-color:var(--line)}
.library-hero,.blog-hero{background:none;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:30px 0 42px;margin:20px 0 32px;display:block}
.library-hero h1,.blog-hero h1{max-width:900px}.blog-stamp{display:none}
.lesson-grid{gap:24px}.lesson-card{background:transparent;border:0;border-top:1px solid var(--ink);padding:26px 0;border-radius:0}
.lesson-card h2{font-size:28px}.lesson-card small{font-size:12px}
.filters{background:transparent;padding:24px 0;border:0;border-bottom:1px solid var(--line)}
.filter,.chapter-nav a,.blog-categories a{border-radius:3px}
.learning-goals,.worked-example{background:var(--sage)}.study-note{background:var(--amber-soft);border-color:var(--line)}
.lesson-content .panel,.exercise,.quiz-option{border-radius:3px}.exercise{background:var(--paper)}
.formula{background:var(--sage);border-color:var(--amber);border-radius:0}
.quiz-feedback{border-color:var(--forest)}.quiz-feedback.wrong{border-color:var(--amber)}
.blog-grid{gap:30px}.blog-card{background:transparent;border:0;border-top:1px solid var(--ink);padding:24px 0;border-radius:0}.blog-card h2{font-size:29px}
.blog-toc{background:transparent;border:0;border-inline-start:1px solid var(--line);border-radius:0}
.blog-practice{background:var(--sage)}.home-blog ul{list-style:none;padding:0}.home-blog li{padding:14px 0;border-bottom:1px solid var(--line);margin:0}.home-blog li a{text-decoration:none;font:23px/1.5 Georgia,serif}
.home-blog .button{margin-top:24px}.home-lessons,.home-blog{padding-top:38px}
footer{display:flex;justify-content:space-between;gap:30px;margin-top:70px;padding-block:32px;border-color:var(--ink);font-size:13px}footer p{margin:8px 0;max-width:520px}footer nav{font-size:13px;align-items:start;gap:18px}.footer-brand{font:700 25px Georgia,serif;color:var(--ink);text-decoration:none}
[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] h3{font-family:Tahoma,Arial,sans-serif;letter-spacing:0;line-height:1.55;font-weight:600}
[dir=rtl] h1{font-size:clamp(32px,4.3vw,54px)}[dir=rtl] .eyebrow{letter-spacing:0}[dir=rtl] .home-blog li a{font-family:Tahoma,Arial,sans-serif;font-size:20px}
@media(max-width:1100px){header{gap:16px}header nav{order:3;flex-basis:100%;gap:10px 22px}header>a:last-child:not(.brand){margin-inline-start:auto}.hero{gap:36px}}
@media(max-width:650px){header,main,footer{padding-inline:22px}header{display:flex;padding-block:20px;gap:18px}header nav{gap:4px 18px;font-size:13px}header nav a{padding-block:4px}.brand-name{font-size:34px}.brand-plus{font-size:31px}.hero{grid-template-columns:1fr;padding:36px 0;gap:28px}.hero .panel{padding:24px}.hero h1{font-size:44px}.library-hero,.blog-hero{padding:20px 0 28px}.library-hero h1{font-size:38px}.lesson-content{padding:20px}.lesson-card{padding:22px 0}.blog-card{padding:22px 0}footer{flex-direction:column;gap:14px;margin-top:42px}.blog-prose{padding:20px}.lesson-content h2{font-size:25px}}
@media print{body{color:#000;background:#fff}header,footer{display:none}.hero{display:block}.hero .panel,.lesson-content,.blog-prose{border:0}.panel{background:#fff}input{color:#000;border:0;border-bottom:1px solid #777}.actions{display:none}}
@media(max-width:650px){header nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px 10px}header nav a{width:fit-content}}
/* Readable publisher information and useful guidance beside the tools. */
.info-page{max-width:900px}.info-page section{margin-block:40px}.info-intro{font-size:20px;color:var(--muted)}
.tool-guide{border-top:1px solid var(--line);padding-top:28px;max-width:820px}.tool-guide section{margin-block:28px}
footer>nav{max-width:520px;justify-content:flex-end;gap:8px 20px}footer>div{min-width:0}footer a{overflow-wrap:anywhere}
@media(max-width:650px){footer>nav{justify-content:flex-start}.info-intro{font-size:18px}}
.entry-overview{border-top:1px solid var(--line);padding-top:24px;margin-top:36px}.entry-overview>div+div{border-top:1px solid var(--line);margin-top:32px;padding-top:16px}.entry-overview h2{font-size:27px}